Image fusion of gated SPECT and CT angiography in coronary artery disease. Importance of anatomic-functional correlation

Revista Espa?ola de Medicina Nuclear (English Edition) Pub Date : 2010-01-01 DOI:10.1016/S1578-200X(10)70040-1

M. Nazarena Pizzi , S. Aguadé Bruix , H. Cuéllar Calabria , V. Aliaga , J. Candell Riera

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Abstract

A 77-year old patient was admitted for acute coronary syndrome without ST elevation. His risk was stratified using the myocardial perfusion gated SPECT, showing mild inferior ischemia. Thus, medical therapy was optimized and the patient was discharged. He continued with exertional dyspnea so a coronary CT angiography was performed. It revealed severe lesions in the proximal RCA. SPECT-CT fusion images correlated the myocardial perfusion defect with a posterior descending artery from the RCA, in a co-dominant coronary area. Subsequently, cardiac catheterism was indicated for his treatment.

The current use of image fusion studies is limited to patients in whom it is difficult to attribute a perfusion defect to a specific coronary artery. In our patient, the fusion images helped to distinguish between the RCA and the circumflex artery as the culprit artery of ischemia.

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门控SPECT与CT血管造影在冠状动脉疾病中的图像融合。解剖功能相关性的重要性

一例77岁患者因急性冠状动脉综合征入院，无ST段抬高。使用心肌灌注门控SPECT对其进行风险分层，显示轻度下位缺血。因此，优化药物治疗，患者出院。他继续出现劳累性呼吸困难，因此进行了冠状动脉CT血管造影。结果显示近端RCA有严重病变。SPECT-CT融合图像将心肌灌注缺损与来自RCA的后降支相关联，在冠状动脉共优势区。随后，他接受了心导管治疗。目前图像融合研究的使用仅限于难以将灌注缺陷归因于特定冠状动脉的患者。在我们的患者中，融合图像有助于区分RCA和作为缺血罪魁祸首的旋转动脉。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Revista Espa?ola de Medicina Nuclear (English Edition)

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