Cardiac CT & MRI Literature

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Improvement in wall motion in a 50% infarct after revascularization
This 46-years old man came with an acute LAD territory infarct involving the anterior wall and septum. Most of the infarct involved approx. 50-60% of the thickness of the myocardium (Figs. 1-3 - pre). A tight proximal LAD lesion was...

Magnetic Resonance Assessment of the Substrate for Inducible Ventricular Tachycardia in Nonischemic Cardiomyopathy -- Nazarian et al. 112 (18): 2821 -- Circulation
This article by Nazarian et al in this week's issue of Circulation shows that scar diagnosed on contrast-enhanced CMR is significantly predictive of inducible ventricular tachycardia, even after adjusting for LV ejection fraction. Scar involving 26-75% of the myocardium was...

Differentiating Acute Myocardial Infarction from Myocarditis: Diagnostic Value of Early- and Delayed-Perfusion Cardiac MR Imaging -- Laissy et al. 237 (1): 75 -- Radiology
This article describes the difference between the enhancement patterns in acute myocarditis and infarction. The differentiation is pretty straightforward. Infarcts show a defect on first-pass imaging, with a subendocardial-transmural enhancement corresponding to an infarct territory. Myocarditis shows no change on...

Double aortic arch and tracheal compression
This is an article by Chan MSM et al from Hong Kong, in this month's AJR, that shows how with a single dataset, we can get exquisite angiogram and tracheo-bronchial tree images of a double aortic arch patient. When the...

Limited diagnostic yield of non-invasive coronary angiography by 16-slice multi-detector spiral computed tomography in routine patients referred for evaluation of coronary artery disease -- Kaiser et al. 26 (19): 1987 -- European Heart Journal
This article from Switzerland is one of the first that shows poor results with 16-slice CT, in unselected patients.. The results shown in this article, in 149 consecutive patients, are really dismal with an overall sensitivity of picking up significant...

Dynamic Cine Imaging of the Mitral Valve with 16-MDCT: A Feasibility Study -- Alkadhi et al. 185 (3): 636 -- American Journal of Roentgenology
This is a nice proof-of-concept article on the use of CT in mitral valvular imaging. The techniques and anatomy have been well explained and it is obvious that with the newer 64-slice scanners, it will be much easier to perform...

Myocardial Infarct: Depiction with Contrast-enhanced MR Imaging--Comparison of Gadopentetate and Gadobenate -- Schlosser et al. 236 (3): 1041 -- Radiology
This is a very interesting article that compares Multihance and Magnevist and makes a case to not switch to Multihance due to the prolonged intracavitary blood-pool enhancement, which makes depiction of subendocardial infarcts difficult and prolongs examination times. Link: Myocardial...

Enhanced Coronary Calcification Determined by Electron Beam CT Is Strongly Related to Endothelial Dysfunction in Patients With Suspected Coronary Artery Disease -- Huang et al. 128 (2): 810 -- Chest
This article furthers the argument that high coronary artery calcium scores are associated not only with enhanced plaque burden, but also endothelial dysfunction Link: Enhanced Coronary Calcification Determined by Electron Beam CT Is Strongly Related to Endothelial Dysfunction in Patients...

Utility of Cardiac Magnetic Resonance Imaging in the Diagnosis of Hypertrophic Cardiomyopathy -- Rickers et al. 112 (6): 855 -- Circulation
This article in the current issue of Circulation again reiterates what is now a known fact. CMR is a superior tool to echocardiography as far as evaluation of HCM is concerned. This article does not assess the importance of delayed...

Coronary Artery Calcium Outperforms Carotid Artery Intima-Media Thickness as a Noninvasive Index of Prevalent Coronary Artery Stenosis -- Terry et al. 25 (8): 1723 -- Arteriosclerosis, Thrombosis, and Vascular Biology
Not that it says anything very new, but just one more article on the usefulness of calcium scoring in assessing the risk of coronary artery disease. Link: Coronary Artery Calcium Outperforms Carotid Artery Intima-Media Thickness as a Noninvasive Index of...

Plaque rupture
This article in Auntminnie.com shows how a group of doctors from Minnesota presented evidence of plaque rupture on MSCT, by looking for extravasation of contrast outside the lumen. This sign should be interesting to look at. Link: Multi-slice CT reveals...

Rapid and complete coronary arterial tree visualization with magnetic resonance imaging: feasibility and diagnostic performance -- Jahnke et al., 10.1093/eurheartj/ehi391 -- European Heart Journal
Snapping on the heels of cardiac CT, is whole heart MRI. There were at least 3 posters on this subject at this year's ECR and there seems to be renewed interest in this subject. It is likely that if the...

Anomalous Coronary Arteries in Adults: Depiction at Multi-Detector Row CT Angiography -- Datta et al. 235 (3): 812 -- Radiology
This article is a multi-centre article that describes coronary anomalies seen in 18 patients, using a 4 or 16-slice CT scanner. They have divided the anomalies into a) ectopic origin from a coronary sinus, b)absent coronary artery and c) ectopic...

A Pictorial Review of Coronary Artery Bypass Grafts at Multidetector Row CT -- Marano et al. 127 (4): 1371 -- Chest
This article by Marano et al is a pictorial essay describing the various types of grafts and their appearance on cardiac CT. Since the scanners used are 4-slice and 16-slice, the quality is not as good as those now seen...

NEJM -- Long-Term Outcomes of Coronary-Artery Bypass Grafting versus Stent Implantation
This article looks at patients from the New York registry and shows that in patients with two-vessel disease or more, CABG is better than PCI (stent implantation) as far as long-term, overall survival is concerned. The accompanying editorial helps explain...


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