A novel support system for patient immobilization and transportation for daily computed tomographic localization of target prior to radiation therapy
| Autor: | Yoshihiro Ogawa, Kazuya Sasaki, Toshie Fujishima, Nobutaka Kasamatsu, Kenji Nemoto, Tokihisa Kimura, Ken Takeda, Kazumasa Seiji, Hisanori Ariga, Shogo Yamada |
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| Rok vydání: | 2003 |
| Předmět: |
Male
Cancer Research Lung Neoplasms Movement medicine.medical_treatment Computed tomography Computed tomographic Immobilization medicine Humans Radiology Nuclear Medicine and imaging Tumor location Tumor motion Equipment and Supplies Hospital Aged Aged 80 and over Radiation medicine.diagnostic_test business.industry Equipment Design Middle Aged Radiography Radiation therapy Transportation of Patients Oncology Female Support system Lung tumor business Nuclear medicine Hospital Units |
| Zdroj: | International Journal of Radiation Oncology*Biology*Physics. 55:1102-1108 |
| ISSN: | 0360-3016 |
| DOI: | 10.1016/s0360-3016(02)04513-3 |
| Popis: | Purpose: To develop a method for quick and smooth transportation of patients from a computed tomography (CT) table to a linear accelerator (linac) table for confirming tumor center before radiation therapy. Methods and materials: We developed a system using a subtable for patient immobilization that is transported via a customized stretcher. The patient lies on the subtable and is immobilized by a vacuum cushion and thermoplastic body cast. The subtable stretcher is used to carry the subtable from the CT table to the linac table. During transportation, the subtable is kept flat and shock to the subtable is carefully avoided. Between August 2001 and September 2002, a total of 9 patients with solitary upper lung tumors (superior to carina) were treated using this system. Results: Intrafractional tumor motion along the x (left-right), y (anterior-posterior), and z axis (superior-inferior) ranged from −2 mm to 2 mm, −2 mm to 2 mm, and −5 mm to 3 mm, respectively. The standard deviation of intrafractional tumor motion along the x , y , and z axis ranged from 0.5 mm to 1.5 mm, 0 mm to 1.7 mm, and 0.6 mm to 3.5 mm, respectively. Interfractional setup errors along the x , y , and z axis ranged from −5 mm to 4 mm, −6 mm to 8 mm, and −6 mm to 6 mm, respectively, and we could reduce interfractional setup errors in the majority of treatment sessions. Conclusion: We developed a system that allows patients to be immobilized and transported to verify tumor location on a daily basis. This system is highly useful for reducing setup errors. |
| Databáze: | OpenAIRE |
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