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- Title
Construction of an anthropopathic abdominal phantom for accuracy validation of deformable image registration.
- Authors
Liao, Y. L.; Chen, H. B.; Zhou, L. H.; Zhen, X.
- Abstract
The purpose of this study is to design and fabricate an anthropopathic abdominal phantom for accuracy evaluation of deformable image registration (DIR) algorithms in adaptive radiation therapy. The constructed deformable organs, including the liver, kidney, spleen and stomach, are made of mixture of polyvinyl chloride (PVC) and softener dioctyl terephthalate, while the rigid structures, i.e. vertebrae, are made of white cement. Relation between the PVC-softener blending ratio and organ CT number is studied, and three-dimensional printing technic is employed to create highly anthropopathic organs in terms of organ shape and density. Detailed steps for phantom construction, landmark point placement and choice of phantom ingredients and construction recipe are introduced. Preliminary results of the mechanical properties of the fabricated organs are also presented. The experimental results indicate that the constructed phantom has satisfactory elastic characteristics and close CT number with corporal organs, and can potentially be applied to simulate real abdominal organ deformation in geometric accuracy validation of DIR algorithms.
- Subjects
IMAGE registration; COMPUTER algorithms; RADIOTHERAPY; POLYVINYL chloride; COMPUTED tomography; ALGORITHMS; ANTHROPOMETRY; BIOLOGICAL models; KIDNEYS; LIVER; PLASTICS; SPLEEN; STOMACH; ULTRASONIC imaging; THREE-dimensional printing
- Publication
Technology & Health Care, 2016, Vol 24, pS717
- ISSN
0928-7329
- Publication type
journal article
- DOI
10.3233/THC-161200