Evaluation of a 3D-printed heterogeneous anthropomorphic head and neck phantom for patient-specific quality assurance in intensity-modulated radiation therapy

被引：0

作者：

Noriyuki Kadoya

Kota Abe

Hikaru Nemoto

Kiyokazu Sato

Yoshiro Ieko

Kengo Ito

Suguru Dobashi

Ken Takeda

Keiichi Jingu

机构：

[1] Tohoku University Graduate School of Medicine,Department of Radiation Oncology

[2] Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital,Department of Radiation Oncology

[3] Tohoku University Hospital,Department of Radiology

[4] Yamagata University Faculty of Medicine,Department of Radiation Oncology

[5] Tohoku University,Department of Radiological Technology, School of Health Sciences, Faculty of Medicine

来源：

Radiological Physics and Technology | 2019年 / 12卷

关键词：

Radiotherapy; Quality assurance; Phantom; Structured exercise; 3D printer; Head and neck ;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

We evaluated an anthropomorphic head and neck phantom with tissue heterogeneity, produced using a personal 3D printer, with quality assurance (QA), specific to patients undergoing intensity-modulated radiation therapy (IMRT). Using semi-automatic segmentation, 3D models of bone, soft tissue, and an air-filled cavity were created based on computed tomography (CT) images from patients with head and neck cancer treated with IMRT. For the 3D printer settings, polylactide was used for soft tissue with 100% infill. Bone was reproduced by pouring plaster into the cavity created by the 3D printer. The average CT values for soft tissue and bone were 13.0 ± 144.3 HU and 439.5 ± 137.0 HU, respectively, for the phantom and 12.1 ± 124.5 HU and 771.5 ± 405.3 HU, respectively, for the patient. The gamma passing rate (3%/3 mm) was 96.1% for a nine-field IMRT plan. Thus, this phantom may be used instead of a standard shape phantom for patient-specific QA in IMRT.

引用

页码：351 / 356

页数：5

共 59 条

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