Cardiac Imaging

While cardiac ultrasound is the widely used imaging modality for heart assessments, computed tomography (CT), magnetic resonance imaging (MRI) and nuclear imaging are also used and are often complimentary, each offering specific details about the heart other modalities cannot. For this reason the clinical question being asked often determines the imaging test that will be used.

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St. Jude posts strong Q3

St. Jude Medical has reported increased sales and net earnings for the third quarter, which ended Oct. 2.

JACC: CT myocardial perfusion compares well with gold standard SPECT

A semi-quantitative assessment of the extent and severity of myocardial perfusion defects by CT was comparable to the gold standard automated assessment by SPECT myocardial perfusion imaging (MPI), according to a study in the October issue of Journal of the American College of Cardiology: Imaging.

AJR: Higher contrast CT lowers dose, maintains image quality

The use of high contrast enhancement may compensate for image degradation in CT scans with high noise indexes, allowing substantially lower radiation doses without compromising imaging quality, a study published in the October edition of the American Journal of Roentgenology found.

JACC: CAC + Framingham best determines heart disease risk

Coronary artery calcium (CAC) scoring together with the Framingham method is more accurate for determining individuals' risks for coronary heart disease (CHD) than Framingham scores alone, a study published Oct. 19 in the Journal of the American College of Cardiology (JACC) concluded.

JACC Editorial: CAC score under scrutiny

Recent studies demonstrate some effectiveness in assessing coronary artery calcification (CAC) to determine risk for coronary heart disease, but more studies are needed to evaluate the metric, an editorial comment published in the October edition of the Journal of the American College of Cardiology cautioned.

Lantheus launches MR angio agent in Canada

Diagnostic imaging company Lantheus Medical Imaging has launched its injectable MR angiography blood pool imaging agent, Ablavar, in Canada.

AIM, Blue Cross initiate evidence-based echo program

Radiology management company American Imaging Management (AIM), in partnership with Blue Cross and Blue Shield of Vermont, has launched an echocardiography management program, leveraging evidence-based medicine in order to reduce variability in how these services are used by physicians, according to AIM.

AJC: Low-dose CCTA is adequate, safe for obese patients

Researchers were able to dramatically lower the radiation dose of coronary CT angiography (CCTA) in an overweight and obese sample while preserving diagnostic accuracy, according to a study published Oct. 15 in the American Journal of Cardiology.

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Around the web

Cardiovascular Business
Global shortage of nuclear imaging isotopes may be over

The nuclear imaging isotope shortage of molybdenum-99 may be over now that the sidelined reactor is restarting. ASNC's president says PET and new SPECT technologies helped cardiac imaging labs better weather the storm.

Cardiovascular Business
‘A huge win’: CMS significantly increases Medicare payments for cardiac CT

CMS has more than doubled the CCTA payment rate from $175 to $357.13. The move, expected to have a significant impact on the utilization of cardiac CT, received immediate praise from imaging specialists.

Cardiovascular Business
FDA clears AI tool that flags signs of heart disease in chest CT scans

The newly cleared offering, AutoChamber, was designed with opportunistic screening in mind. It can evaluate many different kinds of CT images, including those originally gathered to screen patients for lung cancer. 

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