Improving delivery of segments with small MU in step-and-shoot IMRT

被引：11

作者：

Kuperman, VY ^{[1
]}

Lam, WC ^{[1
]}

机构：

[1] James A Haley Vet Hosp, Tampa, FL 33612 USA

来源：

MEDICAL PHYSICS | 2006年 / 33卷 / 04期

关键词：

radiotherapy; step-and-shoot IMRT; segments with small MU;

D O I：

10.1118/1.2174128

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：

The purpose of this study is to describe four new delivery schemes for intensity-modulated radiation therapy (IMRT). In the first two schemes the order in which segments are delivered is varied from fraction to fraction. The last two delivery schemes employ fixed order of segments. The obtained results indicate that the suggested approaches can significantly reduce the so-called "overshoot" and "undershoot" phenomena and the associated discrepancies between planned and delivered monitor units. (c) 2006 American Association of Physicists in Medicine.

引用

收藏

页码：1067 / 1073

页数：7

相关论文

共 9 条

[1]

BOYER A, 2003, AAPM SUMM SCH P, P285

[2] Improved delivery efficiency for step and shoot intensity modulated radiotherapy using a fast-tuning magnetron [J].

Budgell, GJ ;

Martens, C ;

Claus, F .

PHYSICS IN MEDICINE AND BIOLOGY, 2001, 46 (11) :N253-N261

[3] Comparison of beam characteristics in intensity modulated radiation therapy (IMRT) and those under normal treatment condition [J].

Cheng, CW ;

Das, IJ .

MEDICAL PHYSICS, 2002, 29 (02) :226-230

[4]

Ezzell G A, 2001, J Appl Clin Med Phys, V2, P138, DOI 10.1120/1.1386508

[5] Guidance document on delivery, treatment planning, and clinical implementation of IMRT: Report of the IMRT subcommittee of the AAPM radiation therapy committee [J].

Ezzell, GA ;

Galvin, JM ;

Low, D ;

Palta, JR ;

Rosen, I ;

Sharpe, MB ;

Xia, P ;

Xiao, Y ;

Xing, L ;

Yu, CX .

MEDICAL PHYSICS, 2003, 30 (08) :2089-2115

[6] Quality assurance of the dose delivered by small radiation segments [J].

Hansen, VN ;

Evans, PM ;

Budgell, GJ ;

Mott, JHL ;

Williams, PC ;

Brugmans, MJP ;

Wittkamper, FW ;

Mijnheer, BJ ;

Brown, K .

PHYSICS IN MEDICINE AND BIOLOGY, 1998, 43 (09) :2665-2675

[7] Characterization of a commercial multileaf collimator used for intensity modulated radiation therapy [J].

Low, DA ;

Sohn, JW ;

Klein, EE ;

Markman, J ;

Mutic, S ;

Dempsey, JF .

MEDICAL PHYSICS, 2001, 28 (05) :752-756

[8] Monitor unit settings for intensity modulated beams delivered using a step-and-shoot approach [J].

Sharpe, MB ;

Miller, BM ;

Yan, D ;

Wong, JW .

MEDICAL PHYSICS, 2000, 27 (12) :2719-2725

[9] Communication and sampling rate limitations in IMRT delivery with a dynamic multileaf collimator system [J].

Xia, P ;

Chuang, CF ;

Verhey, LJ .

MEDICAL PHYSICS, 2002, 29 (03) :412-423