Optimum delineation of skin structure for dose calculation with the linear Boltzmann transport equation algorithm in radiotherapy treatment planning

被引：0

作者：

Hamada, Keisuke ^{[1
,2
]}

Fujibuchi, Toshioh ^{[3
]}

Arakawa, Hiroyuki ^{[3
]}

机构：

[1] Natl Hosp Org Kagoshima Med Ctr, Dept Radiol Technol, 8-1 Shiroyama Cho, Kagoshima 8920853, Japan

[2] Kyushu Univ, Grad Sch Med, Dept Hlth Sci, Fukuoka, Japan

[3] Kyushu Univ, Fac Med Sci, Dept Hlth Sci, Fukuoka, Japan

来源：

RADIOLOGICAL PHYSICS AND TECHNOLOGY | 2024年 / 17卷 / 04期

关键词：

Skin-surface dose; Skin-ring structure; Volumetric modulated arc therapy; Acuros XB; Head and neck; MODULATED RADIATION-THERAPY; FILM DOSIMETRY; HELICAL TOMOTHERAPY; RADIOCHROMIC FILM; NECK CANCERS; ARC THERAPY; HEAD; SURFACE; PRECISION; ACCURACY;

D O I：

10.1007/s12194-024-00840-8

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：

This study investigated the effectiveness of placing skin-ring structures to enhance the precision of skin dose calculations in patients who had undergone head and neck volumetric modulated arc therapy using the Acuros XB algorithm. The skin-ring structures in question were positioned 2 mm below the skin surface (skin A) and 1 mm above and below the skin surface (skin B) within the treatment-planning system. These structures were then tested on both acrylic cylindrical and anthropomorphic phantoms and compared with the Gafchromic EBT3 film (EBT3). The results revealed that the maximum dose differences between skins A and B for the cylindrical and anthropomorphic phantoms were approximately 12% and 2%, respectively. In patients 1 and 2, the dose differences between skins A and B were 9.2% and 8.2%, respectively. Ultimately, demonstrated that the skin-dose calculation accuracy of skin B was within 2% and did not impact the deep organs.

引用

页码：938 / 946

页数：9