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01-01-2017 | Original Article

Patient-related quality assurance with different combinations of treatment planning systems, techniques, and machines

A multi-institutional survey

Authors: M. Sc. Dipl.-Ing. (FH) Beatrice Steiniger, René Berger, Sabine Eilzer, Christine Kornhuber, Kathleen Lorenz, Torsten Peil, Carsten Reiffenstuhl, Johannes Schilz, Dirk Schröder, Michael Schwedas, Stephanie Pensold, Mathias Walke, Kirsten Weibert, Ulrich Wolf, Tilo Wiezorek

Published in: Strahlentherapie und Onkologie | Issue 1/2017

Abstract

Purpose

This project compares the different patient-related quality assurance systems for intensity-modulated radiation therapy (IMRT) and volumetric-modulated arc therapy (VMAT) techniques currently used in the central Germany area with an independent measuring system.

Materials and methods

The participating institutions generated 21 treatment plans with different combinations of treatment planning systems (TPS) and linear accelerators (LINAC) for the QUASIMODO (Quality ASsurance of Intensity MODulated radiation Oncology) patient model. The plans were exposed to the ArcCHECK measuring system (Sun Nuclear Corporation, Melbourne, FL, USA). The dose distributions were analyzed using the corresponding software and a point dose measured at the isocenter with an ionization chamber.

Results

According to the generally used criteria of a 10 % threshold, 3 % difference, and 3 mm distance, the majority of plans investigated showed a gamma index exceeding 95 %. Only one plan did not fulfill the criteria and three of the plans did not comply with the commonly accepted tolerance level of ±3 % in point dose measurement.

Conclusion

Using only one of the two examined methods for patient-related quality assurance is not sufficiently significant in all cases.

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Title: Patient-related quality assurance with different combinations of treatment planning systems, techniques, and machines
A multi-institutional survey
Authors: M. Sc. Dipl.-Ing. (FH) Beatrice Steiniger
René Berger
Sabine Eilzer
Christine Kornhuber
Kathleen Lorenz
Torsten Peil
Carsten Reiffenstuhl
Johannes Schilz
Dirk Schröder
Michael Schwedas
Stephanie Pensold
Mathias Walke
Kirsten Weibert
Ulrich Wolf
Tilo Wiezorek
Publication date: 01-01-2017
Publisher: Springer Berlin Heidelberg
Published in: Strahlentherapie und Onkologie / Issue 1/2017
Print ISSN: 0179-7158
Electronic ISSN: 1439-099X
DOI: https://doi.org/10.1007/s00066-016-1064-y

At a glance: The ONWARDS insulin icodec trials

Springer Medicine

Patient-related quality assurance with different combinations of treatment planning systems, techniques, and machines

A multi-institutional survey

Abstract

Purpose

Materials and methods

Results

Conclusion

At a glance: The ONWARDS insulin icodec trials

Springer Medicine

Abstract

Purpose

Materials and methods

Results

Conclusion

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