Cardiovascular Radiology: Page 85

IAEA study finds that interventional dose may be too high
By Brian Casey
Many patients at hospitals in developing countries may be getting too much radiation dose during interventional radiology and cardiology procedures, according to a study sponsored by the International Atomic Energy Agency (IAEA) and published in the August issue of the American Journal of Roentgenology.
August 4, 2009
Lower-kilovoltage coronary CTA maintains image quality
By Eric Barnes
In a study that included all but the heaviest cardiac imaging patients, European and Japanese researchers were able to cut radiation dose by 31% in coronary CT angiography (CTA) studies by reducing the kilovoltage from 120 kV to 100 kV, with no difference in image quality.
August 4, 2009
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Dual-source CTA turns in mixed results for coronary stenoses
By Wayne Forrest
Dual-source CT angiography (CTA) achieves a high negative predictive value in excluding coronary artery stenoses in patients with stable coronary artery disease, but the modality is "very limited" in its ability to predict the presence of ischemia, according to a study by German researchers.
July 29, 2009
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Coronary artery calcium independently predicts risk in CAD patients
By Reuters Health
NEW YORK (Reuters Health), Jul 29 - Coronary calcium scoring can be used to predict future severe cardiac events in patients with stable coronary artery disease (CAD), according to a new study in Radiology.
July 28, 2009
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Adding PET to 64-slice CT aids detection of heart disease
By Wayne Forrest
Adding functional data from PET to 64-slice coronary CT angiography can improve the latter's ability to detect coronary artery disease, overcoming the modality's historic weak point in specificity, according to U.K. researchers.
July 19, 2009
Prospectively gated coronary CTA nearly equals normal-dose scans
By Eric Barnes
Researchers in Italy report that low-dose prospectively gated coronary CT angiography (CTA) scans are nearly equivalent to retrospectively gated exams in diagnostic accuracy, while reducing radiation dose by up to 72%, according to an article published in the Journal of the American College of Cardiology.
July 16, 2009
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Nuclear myocardial perfusion imaging can reduce hospital costs for suspected MI
By Reuters Health
NEW YORK (Reuters Health), Jul 13 - For low-risk emergency department patients with suspected acute coronary syndrome, acute nuclear myocardial perfusion imaging (MPI) has the potential to safely reduce the number of hospital admissions and to lower overall costs, Swedish investigators report.
July 12, 2009
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High-pitch cardiothoracic CTA skips breath-holds and high doses
By Eric Barnes
A new way to use CT angiography (CTA) to scan fast-moving targets -- such as fidgety children and grown-ups with rapid heartbeats -- is becoming routine at a hospital in France.
July 6, 2009
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MRA recommended over CTA for following Kawasaki disease
By Wayne Forrest
Italian researchers recommend coronary MR angiography (MRA) as the modality of choice in the follow-up of patients with Kawasaki disease to reduce the potential cumulative effect of radiation exposure from repeat CT angiography (CTA) exams.
July 5, 2009
Images may look different on sitting gamma cameras
By AuntMinnieEurope.com staff writers
TORONTO - Cardiac images produced on gamma cameras in which patients are imaged in the sitting position may look different than those from standard supine-oriented gamma cameras, a phenomenon that clinicians should be aware of, according to a presentation at this week's SNM meeting.
June 16, 2009
Hybrid coronary CTA, SPECT offer less radiation, shorter scan time
By Wayne Forrest
TORONTO - Swiss researchers have developed a hybrid cardiac imaging method that combines coronary CT angiography (CTA) with SPECT myocardial perfusion imaging to predict relevant coronary lesions with considerably less radiation dose and scanning time.
June 14, 2009
MR stress alone sufficient for myocardial perfusion
By Eric Barnes
Use of an automated postprocessing tool eliminates the need for both a stress and rest exam in myocardial perfusion MRI, according to researchers from Germany. They found that quantitative assessment of stress MRI images alone delivers the same diagnostic performance as semiquantitative evaluation of both stress and rest perfusion exams.
June 11, 2009
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