Total marrow and lymphoid irradiation with helical tomotherapy: a practical implementation report
نویسندگان
چکیده
منابع مشابه
Virtual bolus for total body irradiation treated with helical tomotherapy
Intensity-modulated radiation therapy (IMRT) for total body irradiation (TBI) is practiced in several centers using the TomoTherapy System. In this context the planning target volume (PTV) is the entire body including the skin. A safety margin in the air surrounding the body should be added to take into account setup errors. But using inverse planning, over-fluence peak could be generated in th...
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BACKGROUND Patient-specific dose verification for treatment planning in helical tomotherapy is routinely performed using a homogeneous virtual water cylindrical phantom of 30 cm diameter and 18 cm length (Cheese phantom). Because of this small length, treatment with total marrow irradiation (TMI) requires multiple deliveries of the dose verification procedures to cover a wide range of the targe...
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BACKGROUND Beam-on time in Total Marrow Irradiation (TMI) delivery with helical tomotherapy is more than 30 minutes. The purpose of this study was to investigate extended time output variation in tomotherapy machine without dose servo system and its impact on the dosimetry of TMI planning. MATERIALS AND METHODS The calibration procedures with 1800 seconds delivery were conducted. The slab and...
متن کاملHelical Tomotherapy® is a Safe and Feasible Technique for Total Scalp Irradiation
Angiosarcoma of the scalp is a rare aggressive tumor that affects elderly patients. Chemoradiation is the treatment of choice for multicentric and extensive disease. The shape of the scalp represents a dosimetric challenge in terms of achieving a homogeneous concave dose distribution with coverage of the entire target volume and an acceptable organs-at-risk sparing. We report a case of an 81-ye...
متن کاملTotal Body Irradiation (TBI) using Helical Tomotherapy in children and young adults undergoing stem cell transplantation
BACKGROUND Establishing Total Body Irradiation (TBI) using Helical Tomotherapy (HT) to gain better control over dose distribution and homogeneity and to individually spare organs at risk. Because of their limited body length the technique seems especially eligible in juvenile patients. PATIENTS AND METHODS The cohort consisted of 10 patients, 6 female and 4 male, aged 4 - 22 y with acute lymp...
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ژورنال
عنوان ژورنال: Radiation Oncology Journal
سال: 2020
ISSN: 2234-1900,2234-3156
DOI: 10.3857/roj.2020.00528