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  • Title: Clinical usefulness of combinatorial protocol with stress only myocardial perfusion SPECT, CTA and SPECT/CTA 3-dimensional fusion image.
    Author: Kong EJ, Cho IH, Chun KA.
    Journal: Ann Nucl Med; 2011 Jul; 25(6):387-95. PubMed ID: 21547475.
    Abstract:
    BACKGROUND: This study was designed to assess the value of a combinatorial protocol, namely, stress only myocardial perfusion SPECT (MPS), 64-slice coronary computed tomographic angiography (CTA), and SPECT/CTA 3-dimensional (3D) fusion imaging for the evaluation of coronary artery disease. METHODS: A total of 142 patients were retrospectively reviewed. All underwent stress only MPS and 64-slice CTA before invasive coronary angiography (ICA). The SPECT/CTA 3D fusion images were generated. We compared the results of the combinatorial protocol with ICA. RESULTS: Seventy nine (76.0%) subjects were found to have ≥50% stenoses, by ICA. The sensitivity of the combinatorial examination was 100% and its specificity 80.8%. Its positive and negative predictive values were 94.0 and 100%, respectively. The number of lesion for abnormal MPS with matching significant stenoses on CTA is 94 [43 in left anterior descending (LAD); 19 in left circumflex (LCX); 32 in right coronary artery (RCA)], the number of lesion for equivocal perfusion defect with matching stenoses on CTA is 24 (14 in LAD; 7 in LCX; 3 in RCA). The number of coronary arterial stenoses without MPS abnormality is 10, 4 stenoses were detected in left main lesion and the other stenoses were comparatively mild lesion in multi-vessel disease. CONCLUSION: Stress only MPS/CTA 3D fusion imaging could provide the potential for improved diagnostic accuracy and additional information of hemodynamically relevant coronary arterial stenoses.
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