Myocardial Infarction Without Coronary Artery Stenosis Illustrated by Tc-99m Pyrophosphate Scan, Cardiac Magnetic Resonance Imaging, and Myocardial Perfusion Scintigraphy

2009 ◽  
Vol 34 (10) ◽  
pp. 734-736
Author(s):  
Mei-Fang Cheng ◽  
Yen-Hung Lin ◽  
Wen-Yih I. Tseng ◽  
Yen-Wen Wu
Keyword(s):  
Magnetic Resonance Imaging ◽  
Myocardial Infarction ◽  
Cardiac Magnetic Resonance ◽  
Coronary Artery ◽  
Magnetic Resonance ◽  
Myocardial Perfusion ◽  
Myocardial Perfusion Scintigraphy ◽  
Coronary Artery Stenosis ◽  
Resonance Imaging ◽  
Perfusion Scintigraphy

Changes on myocardial perfusion scintigraphy and contrast-enhanced cardiac magnetic resonance imaging after definitive radiotherapy in patients with lung cancer

2021 ◽  
pp. 1-7
Author(s):  
A. Lideståhl ◽  
T. Larsson ◽  
L. Thorén ◽  
O. Brodin ◽  
P. A. Lind
Keyword(s):  
Magnetic Resonance Imaging ◽  
Lung Cancer ◽  
Cardiac Magnetic Resonance ◽  
Magnetic Resonance ◽  
Myocardial Perfusion Scintigraphy ◽  
Myocardial Damage ◽  
Resonance Imaging ◽  
Perfusion Scintigraphy ◽  
Functional Changes ◽  
Lge Cmr

Abstract Aim: To determine whether myocardial perfusion scintigraphy (MPS) changes in lung cancer patients treated with radiotherapy (RT) were detectable with late gadolinium enhancement cardiac magnetic resonance imaging (LGE CMR). Materials and methods: Twenty-one patients with lung cancer were evaluated pre-RT and at 2 and 6 months post-RT follow-up (FU) with MPS and LGE CMR. MPS changes in the left ventricle (LV) were analysed using the semi-quantitative summed rest score method (20 segments) and the Bull’s-eye-view technique. The LGE CMR studies were analysed for visual signs of myocardial damage (fibrosis), that is, focal LGE in the LV and cardiac function parameters. Results: MPS changes were detected in 7/20 patients at 2 months FU and in 8/13 patients at 6 months FU. Only one patient had a new irreversible defect judged to be caused by direct irradiation. MPS changes in two cases were deemed to be caused by attenuation. All new MPS defects were minor and no corresponding myocardial damage, or any functional changes, were evident on LGE CMR. Findings: The extent of MPS changes at 6 months FU appeared less prominent than in previous reports. No visual signs or functional changes corresponding to myocardial damage were detected on LGE CMR. A risk for false-positive MPS changes caused by attenuation is evident.

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