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Bowel exposure in rectal cancer IMRT using prone, supine, or a belly board
- Source :
- Aarhus University, Radiotherapy and Oncology, 102(1), 22-29, Nijkamp, J, Doodeman, B, Marijnen, C, Vincent, A & van Vliet-Vroegindeweij, C 2012, ' Bowel exposure in rectal cancer IMRT using prone, supine, or a belly board ', Radiotherapy & Oncology, vol. 102, no. 1, pp. 22-29 .
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Abstract
- Purpose To investigate bowel exposure using prone, supine, or two different belly boards for rectal cancer intensity modulated RT plans using a full bladder protocol. Methods and materials For 11 volunteers four MR scans were acquired, on a flat table in prone, supine, and on two different belly boards (IT-V Medizintechnik GmbH® (BB1) and CIVCO® (BB2)), using a full bladder protocol. On each scan a 25 × 2 Gy IMRT plan was calculated. Results BB2 led to an average bowel area volume reduction of 20–30% at any dose level compared to prone. BB1 showed a smaller dose reduction effect, while no differences between prone and supine were found. Differences between BB2 and prone, supine or BB1 were significant up to a level of respectively, 45, 35, and 30 Gy. The reducing effect varied among individuals, except for the 50 Gy region, where no effect was found. An increase in bladder volume of 100 cc led to a significant bowel area V15 reduction of 16% independent of scan type. Conclusions In the low and intermediate dose region a belly board still attributes to a significant bowel dose reduction when using IMRT and a full bladder protocol. A larger bladder volume resulted in a significant decreased bowel area dose.
- Subjects :
- Male
medicine.medical_specialty
Supine position
Colorectal cancer
medicine.medical_treatment
Radiation Dosage
Patient Positioning
Radiation Protection
medicine
Prone Position
Supine Position
Volume reduction
Humans
Radiology, Nuclear Medicine and imaging
Belly board
Rectal cancer
IMRT
Radiometry
medicine.diagnostic_test
business.industry
Bowel exposure
Rectal Neoplasms
Magnetic resonance imaging
Radiotherapy Dosage
Hematology
medicine.disease
Magnetic Resonance Imaging
Radiation therapy
Intestines
Prone position
Oncology
Bladder volume
Female
Radiology
Radiotherapy, Intensity-Modulated
business
Subjects
Details
- Database :
- OpenAIRE
- Journal :
- Aarhus University, Radiotherapy and Oncology, 102(1), 22-29, Nijkamp, J, Doodeman, B, Marijnen, C, Vincent, A & van Vliet-Vroegindeweij, C 2012, ' Bowel exposure in rectal cancer IMRT using prone, supine, or a belly board ', Radiotherapy & Oncology, vol. 102, no. 1, pp. 22-29 .
- Accession number :
- edsair.doi.dedup.....1a35a73b2d65dbc963890f7db4e31459