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KMID : 0861420120160010062
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Korean Journal of Nuclear Medicine Technology
2012 Volume.16 No. 1 p.62 ~ p.69
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Usefulness of Posture Change to Prevent Overlapping of Heart and Other Organs in Myocardial Perfusion SPECT using 99mTc Labeled Compound
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Lee Dong-Hyuk
Oh Shin-Hyun
Chung Seok
Cho Seok-Won
Namkoong Hyuk
Kim Jae-Sam
Lee Chang-Ho
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Abstract
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Purpose: The present study has an objective of effectively separating and making observations on a portion of radiopharmaceutical excreted via digestive organ to remain in the organ and invade a heart shadow.
Materials and Methods: When heart shadow is blocked by the organ in tests during a resting phase and a loaded phase, additional images were obtained using immobilization device. The immobilization devices were used to tilt the upper body forward from supine position.
Results: In the reconstructed image for the separated case, as compared with the case where a part of organ is overlapped with heart, in terms of an overall mean value for each parameter, the end-diastolic volume increased by 2.75 mL, the end-systolic volume decreased by 3.16 mL, the left ventricle cardiac coefficient increased by 3.58%, and the area of defect region decreased by 3.58 and 3.92 cm for loading and resting phase, respectively.
Conclusions: In the present study with myocardial perfusion SPECT, overlapped areas of heart and other organs could be effectively separated and visualization by the use of an immobilization device.
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KEYWORD
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99mTc-labeled compound, Myocardial perfusion SPECT, Immobilization device
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