Journal article

Development of a physical geometric phantom for deformable image registration credentialing of radiotherapy centers for a clinical trial

Noriyuki Kadoya, Siwaporn Sakulsingharoj, Tomas Kron, Adam Yao, Nicholas Hardcastle, Alanah Bergman, Hiroyuki Okamoto, Nobutaka Mukumoto, Yujiro Nakajima, Keiichi Jingu, Mitsuhiro Nakamura

JOURNAL OF APPLIED CLINICAL MEDICAL PHYSICS | WILEY | Published : 2021

Abstract

PURPOSE: This study aimed to develop a physical geometric phantom for the deformable image registration (DIR) credentialing of radiotherapy centers for a clinical trial and tested the feasibility of the proposed phantom at multiple domestic and international institutions. METHODS AND MATERIALS: The phantom reproduced tumor shrinkage, rectum shape change, and body shrinkage using several physical phantoms with custom inserts. We tested the feasibility of the proposed phantom using 5 DIR patterns at 17 domestic and 2 international institutions (21 datasets). Eight institutions used the MIM software (MIM Software Inc, Cleveland, OH); seven used Velocity (Varian Medical Systems, Palo Alto, CA), ..

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