Nucl Med Mol Imaging.  2008 Feb;42(1):77-78.

Radius Intermedius Stenosis Induced Myocardial Perfusion Defect: Provened by the Fusion Images of Myocardial Perfusion SPECT and 64 Channel CTA

• Kong EJ
• Cho IH
• Chun KA
• Won KC
• Lee HW
• Park JS

Abstract

A 71-year-old woman was assigned to our department for Tc-99m myocardial perfusion SPECT(MPS) and coronary CT angiography. She admitted for substernal pain, via the ER, 2 days ago. The heart was scanned after intravenous injection of 925 MBq of (99m)Tc-sestamibi adenosine-induced stress SPECT using dual head gamma camera (Hawkeye, GE healthcare. USA). The MPS shows decreased tracer uptake in the apical & mid area of anterior & lateral wall and mid & basal inferior wall. Coronary CT angiograph was obtained using Discovery VCT (GE healthcare). 3D angiography portrayed significant stenosis of ramus intermedius(RI) and posterolateral branch of right coronary artery(PLB) with fibrocalcified plaque. Two images were fused using Cardiac IQ fusion softwear package (Advantage workstation 4.4, GE healthcare) The fusion images explain the perfusion defect of anterior, lateral and inferior wall is due to stenosis of the RI and PLB. And 3 days later, coronary angiography was done and revealed the marked stenosis of RI and PLB. Then balloon angioplasty and stent was instituted in RI. Cardiac SPECT/CT fusion imaging provides additional information about hemodynamic relevance and facilitates lesion interpretation by allowing exact allocation of perfusion defects to its subtending coronary artery.1,2)

Keyword

myocardium; perfusion; SPECT; CT; coronary angiography; fusion

MeSH Terms

Aged
Angiography
Angioplasty, Balloon
Constriction, Pathologic
Coronary Angiography
Delivery of Health Care
Female
Gamma Cameras
Head
Heart
Hemodynamics
Humans
Injections, Intravenous
Myocardium
Perfusion
Radius
Stents
Tomography, Emission-Computed, Single-Photon