Class: RTP::Plan

Inherits:
Record show all
Includes:
Logging
Defined in:
lib/rtp-connect/plan.rb,
lib/rtp-connect/plan_to_dcm.rb

Overview

Note:

Relations:

  • Parent: nil

  • Children: Prescription, DoseTracking

The Plan class is the highest level Record in the RTPConnect records hierarchy, and the one the user will interact with to read, modify and write files.

Instance Attribute Summary collapse

Attributes inherited from Record

#crc, #keyword

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Logging

included, #logger

Methods inherited from Record

#encode, #get_parent, #load, #to_record, #values

Constructor Details

#initialize ⇒ Plan

Creates a new Plan.



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# File 'lib/rtp-connect/plan.rb', line 154

def initialize
  super('PLAN_DEF', 10, 28)
  @current_parent = self
  # Child records:

  @extended_plan = nil
  @prescriptions = Array.new
  @dose_trackings = Array.new
  # No parent (by definition) for the Plan record:

  @parent = nil
  @attributes = [
    # Required:

    :keyword,
    :patient_id,
    :patient_last_name,
    :patient_first_name,
    :patient_middle_initial,
    :plan_id,
    :plan_date,
    :plan_time,
    :course_id,
    # Optional:

    :diagnosis,
    :md_last_name,
    :md_first_name,
    :md_middle_initial,
    :md_approve_last_name,
    :md_approve_first_name,
    :md_approve_middle_initial,
    :phy_approve_last_name,
    :phy_approve_first_name,
    :phy_approve_middle_initial,
    :author_last_name,
    :author_first_name,
    :author_middle_initial,
    :rtp_mfg,
    :rtp_model,
    :rtp_version,
    :rtp_if_protocol,
    :rtp_if_version
  ]
end

Instance Attribute Details

#author_first_name ⇒ Object

Returns the value of attribute author_first_name.



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# File 'lib/rtp-connect/plan.rb', line 53

def author_first_name
  @author_first_name
end

#author_last_name ⇒ Object

Returns the value of attribute author_last_name.



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# File 'lib/rtp-connect/plan.rb', line 52

def author_last_name
  @author_last_name
end

#author_middle_initial ⇒ Object

Returns the value of attribute author_middle_initial.



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# File 'lib/rtp-connect/plan.rb', line 54

def author_middle_initial
  @author_middle_initial
end

#course_id ⇒ Object

Returns the value of attribute course_id.



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# File 'lib/rtp-connect/plan.rb', line 41

def course_id
  @course_id
end

#current_collimator ⇒ Object

Returns the value of attribute current_collimator.



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# File 'lib/rtp-connect/plan_to_dcm.rb', line 6

def current_collimator
  @current_collimator
end

#current_couch_angle ⇒ Object

Returns the value of attribute current_couch_angle.



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# File 'lib/rtp-connect/plan_to_dcm.rb', line 7

def current_couch_angle
  @current_couch_angle
end

#current_couch_lateral ⇒ Object

Returns the value of attribute current_couch_lateral.



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# File 'lib/rtp-connect/plan_to_dcm.rb', line 9

def current_couch_lateral
  @current_couch_lateral
end

#current_couch_longitudinal ⇒ Object

Returns the value of attribute current_couch_longitudinal.



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# File 'lib/rtp-connect/plan_to_dcm.rb', line 10

def current_couch_longitudinal
  @current_couch_longitudinal
end

#current_couch_pedestal ⇒ Object

Returns the value of attribute current_couch_pedestal.



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# File 'lib/rtp-connect/plan_to_dcm.rb', line 8

def current_couch_pedestal
  @current_couch_pedestal
end

#current_couch_vertical ⇒ Object

Returns the value of attribute current_couch_vertical.



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# File 'lib/rtp-connect/plan_to_dcm.rb', line 11

def current_couch_vertical
  @current_couch_vertical
end

#current_gantry ⇒ Object

Returns the value of attribute current_gantry.



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# File 'lib/rtp-connect/plan_to_dcm.rb', line 5

def current_gantry
  @current_gantry
end

#diagnosis ⇒ Object

Returns the value of attribute diagnosis.



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# File 'lib/rtp-connect/plan.rb', line 42

def diagnosis
  @diagnosis
end

#dose_trackings ⇒ Object (readonly)

An array of DoseTracking records (if any) that belongs to this Plan.



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# File 'lib/rtp-connect/plan.rb', line 33

def dose_trackings
  @dose_trackings
end

#md_approve_first_name ⇒ Object

Returns the value of attribute md_approve_first_name.



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# File 'lib/rtp-connect/plan.rb', line 47

def md_approve_first_name
  @md_approve_first_name
end

#md_approve_last_name ⇒ Object

Returns the value of attribute md_approve_last_name.



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# File 'lib/rtp-connect/plan.rb', line 46

def md_approve_last_name
  @md_approve_last_name
end

#md_approve_middle_initial ⇒ Object

Returns the value of attribute md_approve_middle_initial.



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# File 'lib/rtp-connect/plan.rb', line 48

def md_approve_middle_initial
  @md_approve_middle_initial
end

#md_first_name ⇒ Object

Returns the value of attribute md_first_name.



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# File 'lib/rtp-connect/plan.rb', line 44

def md_first_name
  @md_first_name
end

#md_last_name ⇒ Object

Returns the value of attribute md_last_name.



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# File 'lib/rtp-connect/plan.rb', line 43

def md_last_name
  @md_last_name
end

#md_middle_initial ⇒ Object

Returns the value of attribute md_middle_initial.



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# File 'lib/rtp-connect/plan.rb', line 45

def md_middle_initial
  @md_middle_initial
end

#parent ⇒ Object (readonly)

The Record which this instance belongs to (nil by definition).



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# File 'lib/rtp-connect/plan.rb', line 29

def parent
  @parent
end

#patient_first_name ⇒ Object

Returns the value of attribute patient_first_name.



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# File 'lib/rtp-connect/plan.rb', line 36

def patient_first_name
  @patient_first_name
end

#patient_id ⇒ Object

Returns the value of attribute patient_id.



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# File 'lib/rtp-connect/plan.rb', line 34

def patient_id
  @patient_id
end

#patient_last_name ⇒ Object

Returns the value of attribute patient_last_name.



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# File 'lib/rtp-connect/plan.rb', line 35

def patient_last_name
  @patient_last_name
end

#patient_middle_initial ⇒ Object

Returns the value of attribute patient_middle_initial.



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# File 'lib/rtp-connect/plan.rb', line 37

def patient_middle_initial
  @patient_middle_initial
end

#phy_approve_first_name ⇒ Object

Returns the value of attribute phy_approve_first_name.



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# File 'lib/rtp-connect/plan.rb', line 50

def phy_approve_first_name
  @phy_approve_first_name
end

#phy_approve_last_name ⇒ Object

Returns the value of attribute phy_approve_last_name.



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# File 'lib/rtp-connect/plan.rb', line 49

def phy_approve_last_name
  @phy_approve_last_name
end

#phy_approve_middle_initial ⇒ Object

Returns the value of attribute phy_approve_middle_initial.



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# File 'lib/rtp-connect/plan.rb', line 51

def phy_approve_middle_initial
  @phy_approve_middle_initial
end

#plan_date ⇒ Object

Returns the value of attribute plan_date.



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# File 'lib/rtp-connect/plan.rb', line 39

def plan_date
  @plan_date
end

#plan_id ⇒ Object

Returns the value of attribute plan_id.



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# File 'lib/rtp-connect/plan.rb', line 38

def plan_id
  @plan_id
end

#plan_time ⇒ Object

Returns the value of attribute plan_time.



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# File 'lib/rtp-connect/plan.rb', line 40

def plan_time
  @plan_time
end

#prescriptions ⇒ Object (readonly)

An array of Prescription records (if any) that belongs to this Plan.



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# File 'lib/rtp-connect/plan.rb', line 31

def prescriptions
  @prescriptions
end

#rtp_if_protocol ⇒ Object

Returns the value of attribute rtp_if_protocol.



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# File 'lib/rtp-connect/plan.rb', line 58

def rtp_if_protocol
  @rtp_if_protocol
end

#rtp_if_version ⇒ Object

Returns the value of attribute rtp_if_version.



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# File 'lib/rtp-connect/plan.rb', line 59

def rtp_if_version
  @rtp_if_version
end

#rtp_mfg ⇒ Object

Returns the value of attribute rtp_mfg.



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# File 'lib/rtp-connect/plan.rb', line 55

def rtp_mfg
  @rtp_mfg
end

#rtp_model ⇒ Object

Returns the value of attribute rtp_model.



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# File 'lib/rtp-connect/plan.rb', line 56

def rtp_model
  @rtp_model
end

#rtp_version ⇒ Object

Returns the value of attribute rtp_version.



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# File 'lib/rtp-connect/plan.rb', line 57

def rtp_version
  @rtp_version
end

Class Method Details

.load(string, options = {}) ⇒ Plan

Note:

This method does not perform crc verification on the given string. If such verification is desired, use methods ::parse or ::read instead.

Creates a new Plan by loading a plan definition string (i.e. a single line).

Parameters:

  • string (#to_s) —

    the plan definition record string line

  • options (Hash) (defaults to: {}) —

    the options to use for loading the plan definition string

Options Hash (options):

  • :repair (Boolean) —

    if true, a record containing invalid CSV will be attempted fixed and loaded

Returns:

  • (Plan) —

    the created Plan instance

Raises:

  • (ArgumentError) —

    if given a string containing an invalid number of elements



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# File 'lib/rtp-connect/plan.rb', line 71

def self.load(string, options={})
  rtp = self.new
  rtp.load(string, options)
end

.parse(string, options = {}) ⇒ Plan

Creates a Plan instance by parsing an RTPConnect string.

Parameters:

  • string (#to_s) —

    an RTPConnect ascii string (with single or multiple lines/records)

  • options (Hash) (defaults to: {}) —

    the options to use for parsing the RTP string

Options Hash (options):

  • :ignore_crc (Boolean) —

    if true, the RTP records will be successfully loaded even if their checksums are invalid

  • :repair (Boolean) —

    if true, any RTP records containing invalid CSV will be attempted fixed and loaded

  • :skip_unknown (Boolean) —

    if true, unknown records will be skipped, and record instances will be built from the remaining recognized string records

Returns:

  • (Plan) —

    the created Plan instance

Raises:

  • (ArgumentError) —

    if given an invalid string record



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# File 'lib/rtp-connect/plan.rb', line 86

def self.parse(string, options={})
  lines = string.to_s.split("\r\n")
  # Create the Plan object:

  line = lines.first
  RTP::verify(line, options)
  rtp = self.load(line, options)
  lines[1..-1].each do |line|
    # Validate, determine type, and process the line accordingly to

    # build the hierarchy of records:

    RTP::verify(line, options)
    values = line.values(options[:repair])
    keyword = values.first
    method = RTP::PARSE_METHOD[keyword]
    if method
      rtp.send(method, line)
    else
      if options[:skip_unknown]
        logger.warn("Skipped unknown record definition: #{keyword}")
      else
        raise ArgumentError, "Unknown keyword #{keyword} extracted from string."
      end
    end
  end
  return rtp
end

.read(file, options = {}) ⇒ Plan

Creates an Plan instance by reading and parsing an RTPConnect file.

Parameters:

  • file (String) —

    a string which specifies the path of the RTPConnect file to be loaded

  • options (Hash) (defaults to: {}) —

    the options to use for reading the RTP file

Options Hash (options):

  • :ignore_crc (Boolean) —

    if true, the RTP records will be successfully loaded even if their checksums are invalid

  • :repair (Boolean) —

    if true, any RTP records containing invalid CSV will be attempted fixed and loaded

  • :skip_unknown (Boolean) —

    if true, unknown records will be skipped, and record instances will be built from the remaining recognized string records

Returns:

  • (Plan) —

    the created Plan instance

Raises:

  • (ArgumentError) —

    if given an invalid file or the file given contains an invalid record



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# File 'lib/rtp-connect/plan.rb', line 122

def self.read(file, options={})
  raise ArgumentError, "Invalid argument 'file'. Expected String, got #{file.class}." unless file.is_a?(String)
  # Read the file content:

  str = nil
  unless File.exist?(file)
    logger.error("Invalid (non-existing) file: #{file}")
  else
    unless File.readable?(file)
      logger.error("File exists but I don't have permission to read it: #{file}")
    else
      if File.directory?(file)
        logger.error("Expected a file, got a directory: #{file}")
      else
        if File.size(file) < 10
          logger.error("This file is too small to contain valid RTP information: #{file}.")
        else
          str = File.open(file, 'rb:ISO8859-1') { |f| f.read }
        end
      end
    end
  end
  # Parse the file contents and create the RTP::Connect object:

  if str
    rtp = self.parse(str, options)
  else
    raise "An RTP::Plan object could not be created from the specified file. Check the log for more details."
  end
  return rtp
end

Instance Method Details

#==(other) ⇒ Boolean Also known as: eql?

Checks for equality.

Other and self are considered equivalent if they are of compatible types and their attributes are equivalent.

Parameters:

  • other —

    an object to be compared with self.

Returns:

  • (Boolean) —

    true if self and other are considered equivalent



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# File 'lib/rtp-connect/plan.rb', line 204

def ==(other)
  if other.respond_to?(:to_plan)
    other.send(:state) == state
  end
end

#add_dose_tracking(child) ⇒ Object

Adds a dose tracking record to this instance.

Parameters:

  • child (DoseTracking) —

    a DoseTracking instance which is to be associated with self



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# File 'lib/rtp-connect/plan.rb', line 216

def add_dose_tracking(child)
  @dose_trackings << child.to_dose_tracking
end

#add_extended_plan(child) ⇒ Object

Adds an extended plan record to this instance.

Parameters:

  • child (ExtendedPlan) —

    an ExtendedPlan instance which is to be associated with self



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# File 'lib/rtp-connect/plan.rb', line 224

def add_extended_plan(child)
  @extended_plan = child.to_extended_plan
end

#add_prescription(child) ⇒ Object

Adds a prescription site record to this instance.

Parameters:

  • child (Prescription) —

    a Prescription instance which is to be associated with self



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# File 'lib/rtp-connect/plan.rb', line 232

def add_prescription(child)
  @prescriptions << child.to_prescription
end

#children ⇒ Array<Prescription, DoseTracking>

Collects the child records of this instance in a properly sorted array.

Returns:



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# File 'lib/rtp-connect/plan.rb', line 240

def children
  return [@extended_plan, @prescriptions, @dose_trackings].flatten.compact
end

#hash ⇒ Fixnum

Note:

Two objects with the same attributes will have the same hash code.

Computes a hash code for this object.

Returns:

  • (Fixnum) —

    the object’s hash code



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# File 'lib/rtp-connect/plan.rb', line 250

def hash
  state.hash
end

#to_dcm(options = {}) ⇒ DICOM::DObject

Note:

Only photon plans have been tested. Electron beams beams may give an invalid DICOM file. Also note that, due to limitations in the RTP file format, some original values can not be recreated, like e.g. Study UID or Series UID.

Converts the Plan (and child) records to a DICOM::DObject of modality RTPLAN.

Parameters:

  • options (Hash) (defaults to: {}) —

    the options to use for creating the DICOM object

Options Hash (options):

  • :dose_ref (Boolean) —

    if set, Dose Reference & Referenced Dose Reference sequences will be included in the generated DICOM file

  • :manufacturer (String) —

    the value used for the manufacturer tag (0008,0070) in the beam sequence

  • :model (String) —

    the value used for the manufacturer’s model name tag (0008,1090) in the beam sequence

  • :scale (Symbol) —

    if set, relevant device parameters are converted from native readout format to IEC1217 (supported values are :elekta & :varian)

  • :serial_number (String) —

    the value used for the device serial number tag (0018,1000) in the beam sequence

Returns:

  • (DICOM::DObject) —

    the converted DICOM object



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# File 'lib/rtp-connect/plan_to_dcm.rb', line 28

def to_dcm(options={})
  #

  # FIXME: This method is rather big, with a few sections of somewhat similar, repeating code.

  # Refactoring and simplifying it at some stage might be a good idea.

  #

  require 'dicom'
  original_level = DICOM.logger.level
  DICOM.logger.level = Logger::FATAL
  p = @prescriptions.first
  # If no prescription is present, we are not going to be able to make a valid DICOM object:

  logger.error("No Prescription Record present. Unable to build a valid RTPLAN DICOM object.") unless p
  dcm = DICOM::DObject.new
  #

  # TOP LEVEL TAGS:

  #

  # Specific Character Set:

  DICOM::Element.new('0008,0005', 'ISO_IR 100', :parent => dcm)
  # Instance Creation Date

  DICOM::Element.new('0008,0012', Time.now.strftime("%Y%m%d"), :parent => dcm)
  # Instance Creation Time:

  DICOM::Element.new('0008,0013', Time.now.strftime("%H%M%S"), :parent => dcm)
  # SOP Class UID:

  DICOM::Element.new('0008,0016', '1.2.840.10008.5.1.4.1.1.481.5', :parent => dcm)
  # SOP Instance UID (if an original UID is not present, we make up a UID):

  begin
    sop_uid = p.fields.first.extended_field.original_plan_uid.empty? ? DICOM.generate_uid : p.fields.first.extended_field.original_plan_uid
  rescue
    sop_uid = DICOM.generate_uid
  end
  DICOM::Element.new('0008,0018', sop_uid, :parent => dcm)
  # Study Date

  DICOM::Element.new('0008,0020', Time.now.strftime("%Y%m%d"), :parent => dcm)
  # Study Time:

  DICOM::Element.new('0008,0030', Time.now.strftime("%H%M%S"), :parent => dcm)
  # Accession Number:

  DICOM::Element.new('0008,0050', '', :parent => dcm)
  # Modality:

  DICOM::Element.new('0008,0060', 'RTPLAN', :parent => dcm)
  # Manufacturer:

  DICOM::Element.new('0008,0070', 'rtp-connect', :parent => dcm)
  # Referring Physician's Name:

  DICOM::Element.new('0008,0090', "#{@md_last_name}^#{@md_first_name}^#{@md_middle_name}^^", :parent => dcm)
  # Operator's Name:

  DICOM::Element.new('0008,1070', "#{@author_last_name}^#{@author_first_name}^#{@author_middle_name}^^", :parent => dcm)
  # Patient's Name:

  DICOM::Element.new('0010,0010', "#{@patient_last_name}^#{@patient_first_name}^#{@patient_middle_name}^^", :parent => dcm)
  # Patient ID:

  DICOM::Element.new('0010,0020', @patient_id, :parent => dcm)
  # Patient's Birth Date:

  DICOM::Element.new('0010,0030', '', :parent => dcm)
  # Patient's Sex:

  DICOM::Element.new('0010,0040', '', :parent => dcm)
  # Manufacturer's Model Name:

  DICOM::Element.new('0008,1090', 'RTP-to-DICOM', :parent => dcm)
  # Software Version(s):

  DICOM::Element.new('0018,1020', "RubyRTP#{VERSION}", :parent => dcm)
  # Study Instance UID:

  DICOM::Element.new('0020,000D', DICOM.generate_uid, :parent => dcm)
  # Series Instance UID:

  DICOM::Element.new('0020,000E', DICOM.generate_uid, :parent => dcm)
  # Study ID:

  DICOM::Element.new('0020,0010', '1', :parent => dcm)
  # Series Number:

  DICOM::Element.new('0020,0011', '1', :parent => dcm)
  # Frame of Reference UID (if an original UID is not present, we make up a UID):

  begin
    for_uid = p.site_setup.frame_of_ref_uid.empty? ? DICOM.generate_uid : p.site_setup.frame_of_ref_uid
  rescue
    for_uid = DICOM.generate_uid
  end
  DICOM::Element.new('0020,0052', for_uid, :parent => dcm)
  # Position Reference Indicator:

  DICOM::Element.new('0020,1040', '', :parent => dcm)
  # RT Plan Label (max 16 characters):

  plan_label = p ? p.rx_site_name[0..15] : @course_id
  DICOM::Element.new('300A,0002', plan_label, :parent => dcm)
  # RT Plan Name:

  plan_name = p ? p.rx_site_name : @course_id
  DICOM::Element.new('300A,0003', plan_name, :parent => dcm)
  # RT Plan Description:

  plan_desc = p ? p.technique : @diagnosis
  DICOM::Element.new('300A,0004', plan_desc, :parent => dcm)
  # RT Plan Date:

  plan_date = @plan_date.empty? ? Time.now.strftime("%Y%m%d") : @plan_date
  DICOM::Element.new('300A,0006', plan_date, :parent => dcm)
  # RT Plan Time:

  plan_time = @plan_time.empty? ? Time.now.strftime("%H%M%S") : @plan_time
  DICOM::Element.new('300A,0007', plan_time, :parent => dcm)
  # Approval Status:

  DICOM::Element.new('300E,0002', 'UNAPPROVED', :parent => dcm)
  #

  # SEQUENCES:

  #

  # Tolerance Table Sequence:

  if p && p.fields.first && !p.fields.first.tolerance_table.empty?
    tt_seq = DICOM::Sequence.new('300A,0040', :parent => dcm)
    tt_item = DICOM::Item.new(:parent => tt_seq)
    # Tolerance Table Number:

    DICOM::Element.new('300A,0042', p.fields.first.tolerance_table, :parent => tt_item)
  end
  # Structure set information:

  if p && p.site_setup && !p.site_setup.structure_set_uid.empty?
    #

    # Referenced Structure Set Sequence:

    #

    ss_seq = DICOM::Sequence.new('300C,0060', :parent => dcm)
    ss_item = DICOM::Item.new(:parent => ss_seq)
    # Referenced SOP Class UID:

    DICOM::Element.new('0008,1150', '1.2.840.10008.5.1.4.1.1.481.3', :parent => ss_item)
    DICOM::Element.new('0008,1155', p.site_setup.structure_set_uid, :parent => ss_item)
    # RT Plan Geometry:

    DICOM::Element.new('300A,000C', 'PATIENT', :parent => dcm)
  else
    # RT Plan Geometry:

    DICOM::Element.new('300A,000C', 'TREATMENT_DEVICE', :parent => dcm)
  end
  #

  # Patient Setup Sequence:

  #

  ps_seq = DICOM::Sequence.new('300A,0180', :parent => dcm)
  ps_item = DICOM::Item.new(:parent => ps_seq)
  # Patient Position:

  begin
    pat_pos = p.site_setup.patient_orientation.empty? ? 'HFS' : p.site_setup.patient_orientation
  rescue
    pat_pos = 'HFS'
  end
  DICOM::Element.new('0018,5100', pat_pos, :parent => ps_item)
  # Patient Setup Number:

  DICOM::Element.new('300A,0182', '1', :parent => ps_item)
  # Setup Technique (assume Isocentric):

  DICOM::Element.new('300A,01B0', 'ISOCENTRIC', :parent => ps_item)
  #

  # Dose Reference Sequence:

  #

  create_dose_reference(dcm, plan_name) if options[:dose_ref]
  #

  # Fraction Group Sequence:

  #

  fg_seq = DICOM::Sequence.new('300A,0070', :parent => dcm)
  fg_item = DICOM::Item.new(:parent => fg_seq)
  # Fraction Group Number:

  DICOM::Element.new('300A,0071', '1', :parent => fg_item)
  # Number of Fractions Planned (try to derive from total dose/fraction dose, or use 1 as default):

  begin
    num_frac = p.dose_ttl.empty? || p.dose_tx.empty? ? '1' : (p.dose_ttl.to_i / p.dose_tx.to_f).round.to_s
  rescue
    num_frac = '0'
  end
  DICOM::Element.new('300A,0078', num_frac, :parent => fg_item)
  # Number of Brachy Application Setups:

  DICOM::Element.new('300A,00A0', '0', :parent => fg_item)
  # Referenced Beam Sequence (items created for each beam below):

  rb_seq = DICOM::Sequence.new('300C,0004', :parent => fg_item)
  #

  # Beam Sequence:

  #

  b_seq = DICOM::Sequence.new('300A,00B0', :parent => dcm)
  if p
    # If no fields are present, we are not going to be able to make a valid DICOM object:

    logger.error("No Field Record present. Unable to build a valid RTPLAN DICOM object.") unless p.fields.length > 0
    p.fields.each_with_index do |field, i|
      # Fields with modality 'Unspecified' (e.g. CT or 2dkV) must be skipped:

      unless field.modality == 'Unspecified'
        # If this is an electron beam, a warning should be printed, as these are less reliably converted:

        logger.warn("This is not a photon beam (#{field.modality}). Beware that DICOM conversion of Electron beams are experimental, and other modalities are unsupported.") if field.modality != 'Xrays'
        # Reset control point 'current value' attributes:

        reset_cp_current_attributes
        # Beam number and name:

        beam_number = field.extended_field ? field.extended_field.original_beam_number : (i + 1).to_s
        beam_name = field.extended_field ? field.extended_field.original_beam_name : field.field_name
        # Ref Beam Item:

        rb_item = DICOM::Item.new(:parent => rb_seq)
        # Beam Dose (convert from cGy to Gy):

        field_dose = field.field_dose.empty? ? '' : (field.field_dose.to_f * 0.01).round(4).to_s
        DICOM::Element.new('300A,0084', field_dose, :parent => rb_item)
        # Beam Meterset:

        DICOM::Element.new('300A,0086', field.field_monitor_units, :parent => rb_item)
        # Referenced Beam Number:

        DICOM::Element.new('300C,0006', beam_number, :parent => rb_item)
        # Beam Item:

        b_item = DICOM::Item.new(:parent => b_seq)
        # Optional method values:

        # Manufacturer:

        DICOM::Element.new('0008,0070', options[:manufacturer], :parent => b_item) if options[:manufacturer]
        # Manufacturer's Model Name:

        DICOM::Element.new('0008,1090', options[:model], :parent => b_item) if options[:model]
        # Device Serial Number:

        DICOM::Element.new('0018,1000', options[:serial_number], :parent => b_item) if options[:serial_number]
        # Treatment Machine Name (max 16 characters):

        DICOM::Element.new('300A,00B2', field.treatment_machine[0..15], :parent => b_item)
        # Primary Dosimeter Unit:

        DICOM::Element.new('300A,00B3', 'MU', :parent => b_item)
        # Source-Axis Distance (convert to mm):

        DICOM::Element.new('300A,00B4', "#{field.sad.to_f * 10}", :parent => b_item)
        # Beam Number:

        DICOM::Element.new('300A,00C0', beam_number, :parent => b_item)
        # Beam Name:

        DICOM::Element.new('300A,00C2', beam_name, :parent => b_item)
        # Beam Description:

        DICOM::Element.new('300A,00C3', field.field_note, :parent => b_item)
        # Beam Type:

        beam_type = case field.treatment_type
          when 'Static' then 'STATIC'
          when 'StepNShoot' then 'STATIC'
          when 'VMAT' then 'DYNAMIC'
          else logger.error("The beam type (treatment type) #{field.treatment_type} is not yet supported.")
        end
        DICOM::Element.new('300A,00C4', beam_type, :parent => b_item)
        # Radiation Type:

        rad_type = case field.modality
          when 'Elect' then 'ELECTRON'
          when 'Xrays' then 'PHOTON'
          else logger.error("The radiation type (modality) #{field.modality} is not yet supported.")
        end
        DICOM::Element.new('300A,00C6', rad_type, :parent => b_item)
        # Treatment Delivery Type:

        DICOM::Element.new('300A,00CE', 'TREATMENT', :parent => b_item)
        # Number of Wedges:

        DICOM::Element.new('300A,00D0', (field.wedge.empty? ? '0' : '1'), :parent => b_item)
        # Number of Compensators:

        DICOM::Element.new('300A,00E0', (field.compensator.empty? ? '0' : '1'), :parent => b_item)
        # Number of Boli:

        DICOM::Element.new('300A,00ED', (field.bolus.empty? ? '0' : '1'), :parent => b_item)
        # Number of Blocks:

        DICOM::Element.new('300A,00F0', (field.block.empty? ? '0' : '1'), :parent => b_item)
        # Final Cumulative Meterset Weight:

        DICOM::Element.new('300A,010E', 1, :parent => b_item)
        # Referenced Patient Setup Number:

        DICOM::Element.new('300C,006A', '1', :parent => b_item)
        #

        # Beam Limiting Device Sequence:

        #

        create_beam_limiting_devices(b_item, field)
        #

        # Block Sequence (if any):

        # FIXME: It seems that the Block Sequence (300A,00F4) may be

        # difficult (impossible?) to reconstruct based on the RTP file's

        # information, and thus it is skipped altogether.

        #

        #

        # Applicator Sequence (if any):

        #

        unless field.e_applicator.empty?
          app_seq = DICOM::Sequence.new('300A,0107', :parent => b_item)
          app_item = DICOM::Item.new(:parent => app_seq)
          # Applicator ID:

          DICOM::Element.new('300A,0108', field.e_field_def_aperture, :parent => app_item)
          # Applicator Type:

          DICOM::Element.new('300A,0109', "ELECTRON_#{field.e_applicator.upcase}", :parent => app_item)
          # Applicator Description:

          DICOM::Element.new('300A,010A', "Appl. #{field.e_field_def_aperture}", :parent => app_item)
        end
        #

        # Control Point Sequence:

        #

        # A field may have 0 (no MLC), 1 (conventional beam with MLC) or 2n (IMRT) control points.

        # The DICOM file shall always contain 2n control points (minimum 2).

        #

        cp_seq = DICOM::Sequence.new('300A,0111', :parent => b_item)
        if field.control_points.length < 2
          # When we have 0 or 1 control point, use settings from field, and insert MLC settings if present:

          # First CP:

          cp_item = DICOM::Item.new(:parent => cp_seq)
          # Control Point Index:

          DICOM::Element.new('300A,0112', "0", :parent => cp_item)
          # Nominal Beam Energy:

          DICOM::Element.new('300A,0114', "#{field.energy.to_f}", :parent => cp_item)
          # Dose Rate Set:

          DICOM::Element.new('300A,0115', field.doserate, :parent => cp_item)
          # Gantry Angle:

          DICOM::Element.new('300A,011E', field.gantry_angle, :parent => cp_item)
          # Gantry Rotation Direction:

          DICOM::Element.new('300A,011F', (field.arc_direction.empty? ? 'NONE' : field.arc_direction), :parent => cp_item)
          # Beam Limiting Device Angle:

          DICOM::Element.new('300A,0120', field.collimator_angle, :parent => cp_item)
          # Beam Limiting Device Rotation Direction:

          DICOM::Element.new('300A,0121', 'NONE', :parent => cp_item)
          # Patient Support Angle:

          DICOM::Element.new('300A,0122', field.couch_pedestal, :parent => cp_item)
          # Patient Support Rotation Direction:

          DICOM::Element.new('300A,0123', 'NONE', :parent => cp_item)
          # Table Top Eccentric Angle:

          DICOM::Element.new('300A,0125', field.couch_angle, :parent => cp_item)
          # Table Top Eccentric Rotation Direction:

          DICOM::Element.new('300A,0126', 'NONE', :parent => cp_item)
          # Table Top Vertical Position:

          couch_vert = field.couch_vertical.empty? ? '' : (field.couch_vertical.to_f * 10).to_s
          DICOM::Element.new('300A,0128', couch_vert, :parent => cp_item)
          # Table Top Longitudinal Position:

          couch_long = field.couch_longitudinal.empty? ? '' : (field.couch_longitudinal.to_f * 10).to_s
          DICOM::Element.new('300A,0129', couch_long, :parent => cp_item)
          # Table Top Lateral Position:

          couch_lat = field.couch_lateral.empty? ? '' : (field.couch_lateral.to_f * 10).to_s
          DICOM::Element.new('300A,012A', couch_lat, :parent => cp_item)
          # Isocenter Position (x\y\z):

          if p.site_setup
            DICOM::Element.new('300A,012C', "#{(p.site_setup.iso_pos_x.to_f * 10).round(2)}\\#{(p.site_setup.iso_pos_y.to_f * 10).round(2)}\\#{(p.site_setup.iso_pos_z.to_f * 10).round(2)}", :parent => cp_item)
          else
            logger.warn("No Site Setup record exists for this plan. Unable to provide an isosenter position.")
            DICOM::Element.new('300A,012C', '', :parent => cp_item)
          end
          # Source to Surface Distance:

          add_ssd(field.ssd, cp_item)
          # Cumulative Meterset Weight:

          DICOM::Element.new('300A,0134', '0', :parent => cp_item)
          # Beam Limiting Device Position Sequence:

          if field.control_points.length > 0
            create_beam_limiting_device_positions(cp_item, field.control_points.first, options)
          else
            create_beam_limiting_device_positions_from_field(cp_item, field, options)
          end
          # Referenced Dose Reference Sequence:

          create_referenced_dose_reference(cp_item) if options[:dose_ref]
          # Second CP:

          cp_item = DICOM::Item.new(:parent => cp_seq)
          # Control Point Index:

          DICOM::Element.new('300A,0112', "1", :parent => cp_item)
          # Cumulative Meterset Weight:

          DICOM::Element.new('300A,0134', '1', :parent => cp_item)
        else
          # When we have multiple (2 or more) control points, iterate each control point:

          field.control_points.each { |cp| create_control_point(cp, cp_seq, options) }
          # Make sure that hte cumulative meterset weight of the last control

          # point is '1' (exactly equal to final cumulative meterset weight):

          cp_seq.items.last['300A,0134'].value = '1'
        end
        # Number of Control Points:

        DICOM::Element.new('300A,0110', b_item['300A,0111'].items.length, :parent => b_item)
      end
    end
    # Number of Beams:

    DICOM::Element.new('300A,0080', fg_item['300C,0004'].items.length, :parent => fg_item)
  end
  # Restore the DICOM logger:

  DICOM.logger.level = original_level
  return dcm
end

#to_plan ⇒ Plan

Returns self.

Returns:



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# File 'lib/rtp-connect/plan.rb', line 258

def to_plan
  self
end

#to_rtp ⇒ Plan

Returns self.

Returns:



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# File 'lib/rtp-connect/plan.rb', line 266

def to_rtp
  self
end

#to_s ⇒ String Also known as: to_str

Encodes the Plan object + any hiearchy of child objects, to a properly formatted RTPConnect ascii string.

Returns:

  • (String) —

    an RTP string with a single or multiple lines/records



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# File 'lib/rtp-connect/plan.rb', line 275

def to_s
  str = encode #.force_encoding('utf-8')

  children.each do |child|
    str += child.to_s #.force_encoding('utf-8')

  end
  return str
end

#write(file) ⇒ Object

Writes the Plan object, along with its hiearchy of child objects, to a properly formatted RTPConnect ascii file.

Parameters:

  • file (String) —

    a path/file string



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# File 'lib/rtp-connect/plan.rb', line 290

def write(file)
  f = open_file(file)
  f.write(to_s)
  f.close
end