心筋ＳＰＥＣＴ画像におけるコリメータ開口補正の基礎的検討

DOI Web Site 被引用文献1件 参考文献24件
  • 坪井 孝達
    浜松赤十字病院医療技術部特殊放射線技術課
  • 布施 拓
    浜松赤十字病院医療技術部特殊放射線技術課

書誌事項

タイトル別名
  • Study of Collimator Broad Correction in Myocardial Perfusion Imaging
  • シンキン SPECT ガゾウ ニ オケル コリメータ カイコウ ホセイ ノ キソテキ ケントウ

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The purpose of this study was to evaluate the effect of myocardial perfusion imaging that is reconstructed using the ordered subsets-expectation maximization (OS-EM) method with collimator broad correction. Methods: A cardiac phantom and clinical data (with ten normal patients) were used. These projection data were reconstructed using OS-EM with collimator broad correction (OS-EM(+)), without collimator broad correction (OS-EM(-)), and with filtered back projection (FBP). We analyzed the reconstructed images using the following: FWHM of reoriented short-axis data, volume calculated using QGS software, and a polar map calculated using QPS software. Results and Conclusion: On the important point of spatial resolution, OS-EM(+) was excellent compared with FBP. However, a difference in % uptake was seen in one segment. Therefore, when a quantitative myocardial SPECT evaluation is done, the treatment of the numerical value needs to be noted.

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