Journal of Medical Physics
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Year : 2016  |  Volume : 41  |  Issue : 4  |  Page : 240-245

A method to obtain correct standard uptake values in Pinnacle treatment planning system for target volume delineation

Department of Medical Physics and Radiation Engineering, Canberra Hospital, Canberra, Australia

Correspondence Address:
Farshid Salehzahi
Department of Medical Physics and Radiation Engineering, Canberra Hospital, Canberra, ACT 2605
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0971-6203.195188

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Standardized uptake value (SUV) is an advanced tool for quantitative tumor identification and metabolic target volume delineation (TVD) in diagnostic and therapeutic settings. It is thus important to establish a quality assured process to maintain the traceability of data correctly by positron emission tomography (PET) systems. Patient administration of 18 fluoro-deoxy-glucose is increasingly delivered by automated infusion systems (AISs). Whenever AIS is used, its accuracy and traceability measurement need verification. In addition, it was observed that the unreproducible SUV displayed in PET and the treatment planning system (TPS) may cause grave concerns for radiation oncologists for TVD. This concern may complicate the correlation of TVD on PET and TPS and their clinical reporting. The SUV traceability was established from the PET system to AIS. Its accuracy was verified by cross-referencing to the reference dose calibrator traceable to a primary standard. The SUV values were converted in TPS using the in-house "clinical tool" to be identical as in PET, to allow radiation oncologists to use SUV confidently. The outcome of this study enables the clinical groups to rely on the correct SUV values displayed on the TPS and to improve the quality of care for patients in clinical procedures.

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