Feasibility study of volumetric modulated arc therapy with Halcyon™ linac for total body irradiation
Open Access
- 14 December 2021
- journal article
- research article
- Published by Springer Science and Business Media LLC in Radiation Oncology
- Vol. 16 (1), 1-8
- https://doi.org/10.1186/s13014-021-01959-3
Abstract
The use of total body irradiation (TBI) with linac-based volumetric modulated arc therapy (VMAT) has been steadily increasing. Helical tomotherapy has been applied in TBI and total marrow irradiation to reduce the dose to critical organs, especially the lungs. However, the methodology of TBI with Halcyon™ linac remains unclear. This study aimed to evaluate whether VMAT with Halcyon™ linac can be clinically used for TBI. VMAT planning with Halcyon™ linac was conducted using a whole-body computed tomography data set. The planning target volume (PTV) included the body cropped 3 mm from the source. A dose of 12 Gy in six fractions was prescribed for 50% of the PTV. The organs at risk (OARs) included the lens, lungs, kidneys, and testes. The PTV D98%, D95%, D50%, and D2% were 8.9 (74.2%), 10.1 (84.2%), 12.6 (105%), and 14.2 Gy (118%), respectively. The homogeneity index was 0.42. For OARs, the Dmean of the lungs, kidneys, lens, and testes were 9.6, 8.5, 8.9, and 4.4 Gy, respectively. The V12Gy of the lungs and kidneys were 4.5% and 0%, respectively. The Dmax of the testes was 5.8 Gy. Contouring took 1–2 h. Dose calculation and optimization was performed for 3–4 h. Quality assurance (QA) took 2–3 h. The treatment duration was 23 min. A planning study of TBI with Halcyon™ to set up VMAT-TBI, dosimetric evaluation, and pretreatment QA, was established.Keywords
This publication has 40 references indexed in Scilit:
- Total Body Irradiation (TBI) using Helical Tomotherapy in children and young adults undergoing stem cell transplantationRadiation Oncology, 2013
- A simplified technique for delivering total body irradiation (TBI) with improved dose homogeneityMedical Physics, 2012
- Total Marrow Irradiation With RapidArc Volumetric Arc TherapyInternational Journal of Radiation Oncology*Biology*Physics, 2011
- Preclinical Assessment of Volumetric Modulated Arc Therapy for Total Marrow IrradiationInternational Journal of Radiation Oncology*Biology*Physics, 2011
- Total Body Irradiation (TBI) in Pediatric PatientsStrahlentherapie und Onkologie, 2010
- Long-Term Renal Toxicity in Children Following Fractionated Total-Body Irradiation (TBI) Before Allogeneic Stem Cell Transplantation (SCT)Strahlentherapie und Onkologie, 2009
- CT‐based analysis of dose homogeneity in total body irradiation using lateral beamJournal of Applied Clinical Medical Physics, 2004
- Marrow transplants from unrelated donors for patients with aplastic anemia: Minimum effective dose of total body irradiationTransplantation and Cellular Therapy, 2001
- Whole-body dose from tomotherapy deliveryInternational Journal of Radiation Oncology*Biology*Physics, 1998
- Can a total body irradiation technique be fast and reproducible?International Journal of Radiation Oncology*Biology*Physics, 1994