Experimental determination of the radial dose function of 90Sr/90Y IVBT sources

被引：12

作者：

Holmes, Shannon M. ^{[1
]}

DeWerd, Larry A. ^{[1
]}

Micka, John A. ^{[1
]}

机构：

[1] Univ Wisconsin, Dept Med Phys, Madison, WI 53706 USA

来源：

MEDICAL PHYSICS | 2006年 / 33卷 / 09期

关键词：

IVBT; radial dose function; Sr-90; Y-90;

D O I：

10.1118/1.2256068

中图分类号：

R8 [特种医学]; R445 [影像诊断学];

学科分类号：

1002 ; 100207 ; 1009 ;

摘要：

A series of measurements were undertaken using both high sensitivity radiochromic film and new lithium fluoride thermoluminescent dosimeters in a liquid water medium to define the radial dose function of Sr-90/Y-90 beta emitting intravascular brachytherapy sources more accurately. These measurements of a single 5 French source pellet served to verify current Monte Carlo transport models and extrapolation chamber measurements of the radial dose function, thus providing the recommended independent published measurements for g(r) of these sources. A slight deviation in the published radial dose function at depth leads the authors to recommend that treatment planning be performed using updated g(r) values from current Monte Carlo transport models verified by measurements such as those shown in this investigation. (c) 2006 American Association of Physicists in Medicine.

引用

页码：3225 / 3233

页数：9

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