Advanced Patient Setup and Delivery in Radiotherapy
Explore the detailed process of patient setup and treatment delivery in radiotherapy, covering instructions for radiation delivery, delivery workflow, patient setup parameters, and more. Understand how treatment planning systems generate plans and how treatment management systems instruct devices during the treatment process.
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Presentation Transcript
DICOM Second Generation Radiotherapy Supplement 160 Patient Setup and Delivery DICOM Working Group 07 Radiotherapy
Supplement 160 This Supplement deals with the instruction which RT Radiations are delivered and the definition of the patient setup for treatment delivery. 2
Delivery Workflow A Treatment Planning System (TPS) generates a "treatment plan" by creating one or more RT Radiation Sets, referencing one or more RT Radiations (see Supplement 175). These instances are sent to the Treatment Management System (TMS). The TMS instructs the treatment device to deliver all or a subset of these instances The instruction is realized using a UPS containing a RT Radiation Set Delivery Instruction as input information 3
Delivery Instruction The RT Radiation Set Delivery Instruction contains details about the current fraction number which RT Radiations are to be verified or delivered where to continue a delivery that was interrupted in a prior treatment session in which order the RT Radiations are delivered which RT Radiations are omitted during this session. 4
Patient Setup Before treatment, the patient has to be set up depending on the treatment location and the indication for treatment in order to guarantee safe and reproducible delivery results. The setup parameters are defined during the treatment planning process. Treatment therapists will utilize the patient setup parameters as an instruction for their setup procedure. 5
Patient Setup Parameters The RT Treatment Preparation IOD contains the following information: The orientation of the patient with respect to the treatment device and gravity The kind of setup device (e.g. treatment table or chair) The setup method (e.g. at isocenter or by a defined distance) The kind of shielding devices to be used The method how the patient is aligned (e.g. infrared markers or surface scanners) Whether certain procedures are to be considered during setup (e.g. patient is sedated or vital signs have to be monitored) 6
