Journal of cardiovascular magnetic resonance : official journal of the Society for Cardiovascular Magnetic Resonance
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J Cardiovasc Magn Reson · Jan 2006
Detection of coronary stenoses with contrast enhanced, three-dimensional free breathing coronary MR angiography using the gadolinium-based intravascular contrast agent gadocoletic acid (B-22956).
To determine the diagnostic value of the intravascular contrast agent gadocoletic acid (B-22956) in three-dimensional, free breathing coronary magnetic resonance angiography (MRA) for stenosis detection in patients with suspected or known coronary artery disease. ⋯ The use of gadocoletic acid (B-22956) results in an improvement of MR angiographic parameters, asssessability of coronary segments and detection of coronary stenoses > or = 50%.
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J Cardiovasc Magn Reson · Jan 2006
Reproducibility of carotid atherosclerotic lesion type characterization using high resolution multicontrast weighted cardiovascular magnetic resonance.
Cardiovascular magnetic resonance (CMR) can characterize carotid atherosclerosis. The purpose of this study is to evaluate reader agreement of carotid atherosclerotic lesion types by CMR. ⋯ The difference between type I-II and III lesions lies in the definition of the vessel wall. The moderate inter-reader agreement suggests further efforts such as establishment of normal carotid artery wall thickness by a quantitative measure are needed for carotid atherosclerotic lesion characterization.
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J Cardiovasc Magn Reson · Jan 2006
Diagnosis of congenital obstructive aortic arch anomalies in Chinese children by contrast-enhanced magnetic resonance angiography.
The purpose of this study was to evaluate the accuracy of contrast-enhanced magnetic resonance angiography for the diagnosis of congenital obstructive aortic arch anomalies in children and compare it with transthoracic echocardiography and other MR imaging techniques (ECG gated T1-weighted spin-echo imaging and gradient-echo cine imaging). ⋯ Contrast-enhanced magnetic resonance angiography is a reliable, noninvasive imaging technique for the diagnosis of congenital obstructive aortic arch anomalies in children. Occasionally, even more information can be obtained from this technique than from conventional X-ray angiocardiography. Contrast-enhanced magnetic resonance angiography is superior to transthoracic echocardiography and other MR imaging techniques (ECG gated T1-weighted spin-echo imaging and gradient-echo cine imaging) for diagnosis of congenital obstructive aortic arch anomalies in children.
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J Cardiovasc Magn Reson · Jan 2005
Drug eluting coronary stent: in vitro evaluation of magnet resonance safety at 3 Tesla.
To evaluate MR safety at 3 Tesla for a drug eluting coronary stent. ⋯ The stent exhibited minor magnetic field interactions that will not cause migration. Heating was not substantial (+0.5 degrees C). Artifacts may create a problem if the area of interest is in the same area or close to the stent (e.g., for a T1-weighted, spin echo pulse sequence, within approximately 16 mm; for a gradient echo pulse sequence, within approximately 23 mm). Conclusion. The findings indicated that it would be safe for a patient with this cobalt alloy-based, drug-eluting coronary stent to undergo MRI at 3 Tesla or less. Importantly, because of the relative lack of magnetic field interactions, MRI may be performed immediately after implantation.
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This case report describes the diagnosis of Chagas myocarditis in a patient from Honduras who presented with syncope. The discussion summarizes the pathophysiology of cardiac Chagas disease. Acute, latent, and chronic Chagas myocarditis are described. The role of CMR in diagnosing Chagas myocarditis is discussed.