심근관류 SPECT 검사의 정확도 검증을 위한 새로운 심장․흉부 팬텀의 개발Development of a New Cardiac and Torso Phantom for Verifying the Accuracy of Myocardial Perfusion SPECT
- Other Titles
- Development of a New Cardiac and Torso Phantom for Verifying the Accuracy of Myocardial Perfusion SPECT
- Authors
- 야마모토 토모아키; 이기성; 타카야마 테루히코; 키타하라 타다시; 김정민
- Issue Date
- 2008
- Publisher
- 대한방사선과학회
- Keywords
- cardiac phantom; torso phantom; myocardium; SPECT; SPECT; 심근관류 핵의학검사; 심장팬텀
- Citation
- 방사선기술과학, v.31, no.4, pp.389 - 400
- Indexed
- KCI
OTHER
- Journal Title
- 방사선기술과학
- Volume
- 31
- Number
- 4
- Start Page
- 389
- End Page
- 400
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/124631
- ISSN
- 2288-3509
- Abstract
- Corrections of attenuation, scatter and resolution are important in order to improve the accuracy of single photon emission computed tomography (SPECT) image reconstruction. Especially, the heart movement by respiration and beating cause the errors in the corrections. Myocardial phantom is used to verify the correction methods, but there are many different parts in the current phantoms in actual human body. Therefore the results using a phantom are often considered apart from the clinical data. We developed a new phantom that implements the human body structure around the thorax more faithfully. The new phantom has the small mediastinum which can simulate the structure in which the lung adjoins anterior, lateral and apex of myocardium. The container was made of acrylic and water-equivalent material was used for mediastinum. In addition, solidified polyurethane foam in epoxy resin was used for lung. Five different sizes of myocardium were developed for the quantitative gated SPECT (QGS). The septa of all different cardiac phantoms were designed so that they can be located at the same position. The proposed phantom was attached with liver and gallbladder, the adjustment was respectively possible for the height of them. The volumes of five cardiac ventricles were 150.0, 137.3, 83.1, 42.7 and 38.6ml respectively. The SPECT were performed for the new phantom, and the differences between the images were examined after the correction methods were applied. The three-dimensional tomography of myocardium was well reconstructed, and the subjective evaluations were done to show the difference among the various corrections. We developed the new cardiac and torso phantom, and the difference of various corrections was shown on SPECT images and QGS results.
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Collections - Graduate School > Department of Bioengineering > 1. Journal Articles
- College of Health Sciences > School of Health and Environmental Science > 1. Journal Articles
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