The measurement of three dimensional dose distribution of a ruthenium-106 ophthalmological applicator using magnetic resonance imaging of BANG polymer gels

Author

Chan, Maria F. ; Fung, Albert YC ; Hu, Yu Chi ; Amols, Howard ; Zaider, Marco ; Abramson, David

Author_Institution

Dept. of Med. Phys., Memorial Sloan-Kettering Cancer Center, New York, NY, USA

Volume

4

fYear

2000

fDate

2000

Firstpage

2431

Abstract

The BANG (RIGS Research Inc., Guilford, CT) polymer gel has been used as a dosimeter to determine three-dimensional (3D) dose distribution of a Ruthenium-106 ophthalmological applicator. An eye phantom made of the BANG gel was irradiated by the Ru-106 source and was MR scanned after two weeks. The MR images were then converted to dose mapping through customized software. The results were comparable with those measured with radiographic films and diodes. It is concluded that the BANG gel dosimetry offers the potential for measuring the dose distribution of an ophthalmologic applicator, in three dimensions, with high spatial resolution and relatively good accuracy

Keywords

biomedical MRI; dosimetry; eye; gels; radiation therapy; radioactive sources; ruthenium; 2 w; ¹⁰⁶Ru ophthalmological applicator; BANG gel dosimetry; BANG polymer gels; Ru; diodes; dose distribution measurement; dose mapping; eye phantom; high spatial resolution; magnetic resonance imaging; radiographic films; relatively good accuracy; ruthenium-106 ophthalmological applicator; therapeutic nuclear medicine; Applicators; Calibration; Computed tomography; Dosimetry; Imaging phantoms; Magnetic resonance imaging; Malignant tumors; Manufacturing; Optical scattering; Polymer gels;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 2000. Proceedings of the 22nd Annual International Conference of the IEEE

Conference_Location

Chicago, IL

ISSN

1094-687X

Print_ISBN

0-7803-6465-1

Type

conf

DOI

10.1109/IEMBS.2000.901291

Filename

901291