Cardiac Imaging: Page 80

High pitch equals low dose in coronary CT angiography

VIENNA - High-pitch dual-source CT exams can evaluate the coronary arteries using about a third of the dose of even prospectively triggered exams, according to a study presented in Thursday's cardiac sessions of the European Congress of Radiology.

March 3, 2010

CT blood-flow measurement gauges stenosis severity

64-detector-row CT has sufficient temporal resolution to measure blood flow through the heart, offering the promise of a new functional test based on CT alone, according to a proof-of-concept study by German researchers.

February 25, 2010

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Coronary CTA and MR MPI have complementary roles

Coronary CT angiography (CTA) and MR myocardial perfusion imaging (MPI) work best as a team for evaluating chest pain patients with suspected coronary artery disease, according to a new study published online in Radiology.

February 21, 2010

Study to compare 320-row CT perfusion against SPECT

Following up on the CORE 64 study that tested the value of coronary CT angiography vis-à-vis angiography, researchers have launched a new international trial to compare 320-detector-row CT perfusion to SPECT myocardial perfusion imaging for detecting early coronary artery disease.

February 9, 2010

CT better than MRI for ruling out coronary disease

By Reuters Health

NEW YORK (Reuters Health), Feb 2 - When a noninvasive test for ruling out coronary artery disease is appropriate, CT-based angiography is more sensitive and specific than MRI-based angiography, a new meta-analysis shows.

February 1, 2010

Medical images unlikely to change risky behavior, study shows

By Donna Domino

If you show an obese person a medical image of their plaque-clogged arteries, will it help motivate them to get more exercise? Not necessarily, although you might have better luck getting smokers to change their ways, according to a new review of literature from the Cochrane Collaboration.

January 24, 2010

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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

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

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DSCT edges out 64-slice CT in coronary artery imaging

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

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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

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

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