CT angiography and stress tests can predict heart attacks

Posted on by Kurt Jensen

Invasive angiography unnecessary?

Noninvasive CT angiography and CT myocardial stress perfusion imaging can adequately predict heart attacks and major adverse cardiovascular events, according to a study published yesterday in Radiology—no invasive coronary angiography (ICA) required.

Invasive coronary angiography (ICA), along with stress tests and single photon emission tomography (SPECT) imaging, has long been the "gold standard" for making determinations of whether a lesion is hemodynamically significant and likely to result in major adverse cardiovascular events, reads a Radiological Society of North America press release.

But this "gold standard" has its drawbacks—in costs and risk.

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Broader CMR or SPECT imaging reduces unnecessary angiography

Posted on by Kurt Jensen

Results from the CE-MARC 2 trial, announced today at the European Society of Cardiology (ESC) Congress, suggest that unnecessary angiography could be significantly reduced by favoring noninvasive cardiovascular magnetic resonance (CMR) imaging or single photon emission computed tomography (SPECT) to initially investigate patients with suspected coronary artery disease (CAD).

These findings could have an "important impact on referral rates for invasive coronary angiography," says the ESC press release.

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A new cardiac imaging paradigm for acute chest pain?

Posted on by Kurt Jensen

In the "high-sensitivity cardiac troponin era," will the role of cardiac imaging in the ED change?

As high-sensitivity cardiac troponin (hs-cTn) assays become more and more common, cardiac imaging becomes less necessary for ruling out acute myocardial infarction (AMI) in ED patients with acute chest pain, but might be useful to prevent unnecessary or aggressive treatments write experts in July's volume of the American Heart Journal.

ACVP blog has covered the groundbreaking research on the high-sensitivity cardiac troponin tests since early last year, when we reported a new strategy that could rule out acute myocardial infarction within one hour, and rule it in with 75 percent accuracy. In June, two studies publishes in JAMA Cardiology lent further support to one-hour algorithms.

The speed and safe, accurate "rule out" of acute myocardial infarction through these cardiac biomarker tests "challenges [the] need" for noninvasive imaging prior to patient discharge when troponin values are normal, write the authors of the American Heart Journal article.

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New Cardiac Imaging Technique Produces Higher Quality Images in Less Time

Posted on by Kurt Jensen

CMR

An innovation in cardiac magnetic resonance (CMR) imaging eliminates the need to correct images for respiratory motion, producing higher quality, more accurate images without waiting for patients to breathe.

Preliminary research presented at EuroCMR 2016 by Professor Juerg Schwitter, director of the Cardiac MR Centre at the University Hospital Lausanne, Switzerland, demonstrated how using a modified ventilator and small volumes of air, called "percussions," eliminated the need for patients to breathe during CMR.

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