Cardiac Imaging: Page 80

Italian researchers cut gadolinium dose -- as well as NSF risk

By Wayne Forrest

A half dose of a commercially available MRI contrast agent works as well as a full dose in patients with acute myocardial infarction, according to Italian researchers. The findings show it's possible to achieve shorter imaging times while protecting renally impaired cardiac patients at risk for nephrogenic systemic fibrosis (NSF).

January 20, 2010

MRI used in heart valve operation

By AuntMinnieEurope.com staff writers

Surgeons at King's Health Partners Academic Health Sciences Center in London recently used MRI, rather than x-ray, to guide a procedure to widen a heart valve in a 6-year-old boy.

January 13, 2010

CTA motion model aims to improve cardiac function analysis

By Eric Barnes

Dutch researchers used an automated coronary artery motion model to analyze cardiac function from electrocardiogram-gated coronary CT angiography (CTA) data. The method promises to improve cardiac function analysis and reconstruction interval selection, and even provide new information on coronary artery motion at different heart rates.

January 10, 2010

DSCT edges out 64-slice CT in coronary artery imaging

By Eric Barnes

Coronary CT angiography performed on dual-source CT (DSCT) confers a slight advantage in image quality with slightly fewer nondiagnostic vessel segments compared to 64-detector-row CT. Calcification remains a challenge with both types of scanners, but it's slightly less problematic with dual-source systems, say researchers from the University of Rome.

January 7, 2010

Patients with peripheral arterial disease may need cardiac imaging

By Edward Susman

As many as one in five patients being treated for peripheral arterial disease have concurrent -- but silent -- asymptomatic coronary artery disease that's severe enough to require invasive procedures, according to a study presented at the RSNA meeting earlier this month.

December 29, 2009

MRI shows age- and gender-based differences in myocardial motion

By Eric Barnes

People who suspect that men's and women's hearts march to different drummers now have proof from cardiac MRI. Myocardial motion is strongly influenced by gender as well as age, according to researchers from Freiburg, Germany.

December 17, 2009

CT calcium detection helps rule out obstructive coronary disease

By Reuters Health

NEW YORK (Reuters Health), Dec 15 - Non-enhanced CT for calcium detection is a reliable way to exclude obstructive coronary artery disease in patients with chest pain, researchers report in the December issue of the American Journal of Cardiology.

December 14, 2009

Tissue Doppler ratio predicts cardiac events in hypertensive patients

By Reuters Health

NEW YORK (Reuters Health), Dec 10 - Estimates of left atrial filling pressure, drawn from Doppler studies of the left ventricle, can strongly predict a first cardiac event in hypertensive patients, according to a report in the November 26 European Heart Journal.

December 9, 2009

Echocardiography test beats SPECT for predicting problems after MI

By Reuters Health

NEW YORK (Reuters Health), Dec 7 - Myocardial contrast echocardiography is superior to nitrate-enhanced SPECT in predicting cardiac death and other cardiac events after acute myocardial infarction, say researchers from the U.K. in the November 1 American Journal of Cardiology.

December 6, 2009

Contrast dose halved in coronary CTA

By Eric Barnes

CHICAGO - Contrast doses for CT angiography (CTA) are too high, but they can be lowered substantially with the right equipment and careful attention to technique, according to researchers from Charité University Medical School in Berlin.

December 1, 2009

Trial can't prove PCI to be noninferior to CABG for diabetics with complex CAD

By Reuters Health

NEW YORK (Reuters Health), Dec 1 - A large study of revascularization strategies in diabetics with multivessel coronary artery disease, which set out to show that angioplasty is not inferior to bypass surgery for these patients, could not prove its hypothesis.

November 30, 2009

Coronary CTA edges CMR in a tight race

By Eric Barnes

CHICAGO - In a head-to-head comparison of two closely watched modalities, low-dose dual-source coronary CT angiography (CTA) outperformed cardiac MR (CMR) in sensitivity, specificity, and negative predictive value. But 1.5-tesla CMR countered with better specificity and positive predictive value.

November 30, 2009

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