Evaluation and validation of IBA I'MatriXX array for patient-specific quality assurance of tomotherapy®
| Autor: | T. Anil Kumar, G Deleep Kumar, B Nagarjuna Reddy, V C Sahithya, G Durga Prasad, N V N Madhusudhana Sresty, S Aparna, A. Krishnam Raju, Tasneem Rushdi, Yakub Mohmd, Harjot Kaur Bajwa |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
lcsh:Medical physics. Medical radiology. Nuclear medicine
medicine.medical_specialty Intensity-modulated radiation therapy Computer science medicine.medical_treatment lcsh:R895-920 Biophysics quality assurance Tomotherapy 030218 nuclear medicine & medical imaging 03 medical and health sciences 0302 clinical medicine Technical Note medicine Radiology Nuclear Medicine and imaging Medical physics business.industry 2d array Patient specific Modulation factor Distance to agreement Radiation therapy Gamma index 030220 oncology & carcinogenesis TomoTherapy® business Quality assurance |
| Zdroj: | Journal of Medical Physics, Vol 44, Iss 3, Pp 222-227 (2019) Journal of Medical Physics |
| ISSN: | 1998-3913 0971-6203 |
| Popis: | TomoTherapy® is a modern radiation treatment technique in which intensity-modulated radiation therapy (IMRT) is delivered in helical fashion. A two-dimensional (2D) array which has been existing for IMRT patient-specific quality assurance (PSQA) verifications for many years is I'MatriXX. Our objectives were to validate this I'MatriXX and to evaluate it for different patient sites and fractionation schedules of TomoTherapy treatment. Twenty-five plans were created with virtual target for different possible pitch values and field widths for validation. Gamma index criteria of 3%/2% dose differences and 3/2 mm distance to agreement were used. QA plans of 26 different treatment sites and different fractionation schedules were used. Results indicated that the matrix response is independent of field width, pitch, and modulation factor of TomoTherapy with 3%, 3 mm criteria. High passing rate ranging from 99.7% to 90.7% was observed for selected patient plans. We found that I'MatriXX 2D array can be utilized for easy and quick TomoTherapy PSQA. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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