Journal article
Dosimetric considerations of water-based bolus for irradiation of extremities
Medical dosimetry : official journal of the American Association of Medical Dosimetrists, Vol.23(4), pp.292-295
1998
DOI: 10.1016/S0958-3947(98)00033-8
PMID: 9863729
Abstract
The dosimetry of high-energy photon beams in the treatment of superficial lesions occurring in extremities was examined. Large parallel-opposed fields with different photon beam energies were used. The extremity was immersed in water contained in a commercially available plastic wastebasket. The water bolus serves to even out the surface irregularities of the extremities and to remove the skin sparing effect. A polystyrene block was placed at the floor of the wastebasket to ensure that the extremity was encompassed in the radiation fields. The photon beam energies considered were 4 MV, 6 MV, 10 MV, and 24 MV. The results show that the dose distributions are more homogeneous with higher photon beam energies. The isodose lines are more constricted at mid-plane for low energy photon beams. Higher energy photon beams, 10 MV and up would be preferable for the treatment of superficial lesions of the extremities immersed in water bolus contained in a typical wastebasket size.
Details
- Title: Subtitle
- Dosimetric considerations of water-based bolus for irradiation of extremities
- Creators
- Cheng B. Saw - University of Iowa Hospitals and ClinicsB-Chen WenK. Anderson - University of IowaE. Pennington - University of IowaDavid H. Hussey - University of Iowa Hospitals and Clinics
- Resource Type
- Journal article
- Publication Details
- Medical dosimetry : official journal of the American Association of Medical Dosimetrists, Vol.23(4), pp.292-295
- DOI
- 10.1016/S0958-3947(98)00033-8
- PMID
- 9863729
- ISSN
- 0958-3947
- eISSN
- 1873-4022
- Language
- English
- Date published
- 1998
- Academic Unit
- Radiation Oncology
- Record Identifier
- 9984544601802771
Metrics
6 Record Views