Dose Optimization in Coronary CTA

Dose optimization in coronary CTA.

The annual number of computed tomography (CT) procedures in the U.S. has increased 20-fold (from 3 to 60 million) between 1985 and 2005 (1), and as a result, the average (i.e., per capita) annual background dose in the U.S. has nearly doubled from 3.0 to 5.6 mSv (2). This has precipitated increasing societal concern over the potential public health impact—an increased risk of cancer—associated ...

Coronary CTA: Pattern of Disease

Low kilovolt “prospective ECG-triggering” vs. “retrospective ECG-gating” coronary CTA: comparison of image quality and radiation dose

Background: To compare image quality and radiation doses of low kilovolt (kV) “prospective ECG-triggering” (PT) and standard “retrospective ECG-gating” (RG) coronary computed tomography (CT) angiography. Materials and Methods: A total of 101 consecutive patients (76 males, 25 females; mean age: 55.44 ± 8.28 years) with low-to-intermediate risk status for coronary artery disease and with a body ...

Technology, physiology streamline cardiac CTA contrast dose

In the first study, Dr. Alexander Lembcke and colleagues at Charitè Medical University in Berlin compared a lowand a standard-dose contrast protocol in 60 consecutive patients with body weights ranging from 60 to 80 kg. Thirty of them received a 35-mL dose of contrast injected at 7.5 mL/sec (group A), while the remainder got a 70-mL dose injected at 5 mL/sec (group B). All patients underwent au...

Technology, physiology streamline cardiac CTA contrast dose

In the first study, Dr. Alexander Lembcke and colleagues at Charitè Medical University in Berlin compared a lowand a standard-dose contrast protocol in 60 consecutive patients with body weights ranging from 60 to 80 kg. Thirty of them received a 35-mL dose of contrast injected at 7.5 mL/sec (group A), while the remainder got a 70-mL dose injected at 5 mL/sec (group B). All patients underwent au...