Use of surface‐guided radiation therapy in combination with IGRT for setup and intrafraction motion monitoring during stereotactic body radiation therapy treatments of the lung and abdomen
| Autor: | Megan Bright, Ryan D. Foster, Myra Robinson, C.J. Hampton, John H. Heinzerling, Justin Ruiz, Benjamin J. Moeller, Roshan S. Prabhu, Stuart H. Burri |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Cone beam computed tomography
Remote patient monitoring Stereotactic body radiation therapy medicine.medical_treatment Movement Radiosurgery localization 030218 nuclear medicine & medical imaging 03 medical and health sciences 0302 clinical medicine Abdomen medicine Radiation Oncology Physics Humans Radiology Nuclear Medicine and imaging Instrumentation IGRT Lung Image-guided radiation therapy Radiation SBRT business.industry Radiotherapy Planning Computer-Assisted Surface Guided Radiation Therapy SGRT Cone-Beam Computed Tomography equipment and supplies Radiation therapy medicine.anatomical_structure 030220 oncology & carcinogenesis Intrafraction motion intrafraction motion business Nuclear medicine Radiotherapy Image-Guided |
| Zdroj: | Journal of Applied Clinical Medical Physics |
| ISSN: | 1526-9914 |
| Popis: | Background and purpose Multiple techniques can be used to assist with more accurate patient setup and monitoring during Stereotactic body radiation therapy (SBRT) treatment. This study analyzes the accuracy of 3D surface mapping with Surface‐guided radiation therapy (SGRT) in detecting interfraction setup error and intrafraction motion during SBRT treatments of the lung and abdomen. Materials and Methods Seventy‐one patients with 85 malignant thoracic or abdominal tumors treated with SBRT were analyzed. For initial patient setup, an alternating scheme of kV/kV imaging or SGRT was followed by cone beam computed tomography (CBCT) for more accurate tumor volumetric localization. The CBCT six degree shifts after initial setup with each method were recorded to assess interfraction setup error. Patients were then monitored continuously with SGRT during treatment. If an intrafractional shift in any direction >2 mm for longer than 2 sec was detected by SGRT, then CBCT was repeated and the recorded deltas were compared to those detected by SGRT. Results Interfractional shifts after SGRT setup and CBCT were small in all directions with mean values of |
| Databáze: | OpenAIRE |
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