Development of a deformable lung phantom for the evaluation of deformable registration

A deformable lung phantom was developed to simulate patient breathing motion and to evaluate a deformable image registration algorithm. The phantom consisted of an acryl cylinder filled with water and a latex balloon located in the inner space of the cylinder. A silicon membrane was attached to the...

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Bibliographic Details
Published in:Journal of applied clinical medical physics 2010-01, Vol.11 (1), p.281-286
Main Authors: Chang, Jina, Suh, Tae‐Suk, Lee, Dong‐Soo
Format: Article
Language:English
Subjects:
Accuracy
Acrylates - chemistry
Algorithms
Anthropomorphism
deformable lung phantom
deformable registration
Dosimetry
evaluation
Four-Dimensional Computed Tomography - instrumentation
Four-Dimensional Computed Tomography - methods
Humans
Latex - chemistry
Lung - diagnostic imaging
Lung - pathology
Lung Neoplasms - diagnostic imaging
Lung Neoplasms - pathology
Lung Neoplasms - radiotherapy
Medical imaging
Phantoms, Imaging
Radiation therapy
Radiographic Image Interpretation, Computer-Assisted - instrumentation
Radiographic Image Interpretation, Computer-Assisted - methods
Registration
Reproducibility of Results
Respiratory Mechanics
Sensitivity and Specificity
Silicon
Silicon - chemistry
Technical Notes
Water - chemistry
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Summary:A deformable lung phantom was developed to simulate patient breathing motion and to evaluate a deformable image registration algorithm. The phantom consisted of an acryl cylinder filled with water and a latex balloon located in the inner space of the cylinder. A silicon membrane was attached to the inferior end of the phantom. The silicon membrane was designed to simulate a real lung diaphragm and to reduce motor workload. This specific design was able to reduce the use of metal, which may prevent infrared sensing of the real position management (RPM) gating system for four‐dimensional (4D) CT image acquisition. Verification of intensity based three‐dimensional (3D) demons deformable registration was based on the peak exhale and peak inhale breathing phases. The registration differences ranged from 0.60 mm to 1.11 mm and accuracy was determined according to inner target deformation. The phantom was able to simulate features and deformation of a real human lung and has the potential for wide application for 4D radiation treatment planning. PACS number: 87.57.Gg
ISSN:1526-9914
1526-9914
DOI:10.1120/jacmp.v11i1.3081