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Dual energy CTA of the supraaortic arteries: technical improvements with a novel dual source CT system

posted by Michael M. Lell, M.D. | Jan 30, 2012
Michael M. Lell, M.D.

We sought to describe the performance of DE-CTA of the supraaortic vessels with a novel dual source CT system with special emphasis on image quality and post-processing related artifacts. Read more

Case: Coronary and aortic CTA at a 7-week old boy: DLP5

posted by Ronald Booij | Jan 23, 2012
Ronald Booij
  • case_protocol_7wk-old-boy-coronary-aortic
  • Fig. 1 VRT of the VSD & Aortic arch
  • Fig. 2 VRT of the VSD & Aortic arch
  • Fig. 3 MIP reconstruction showing the presence of the coronaries

The scan was performed with bolustracking technique. The reason was that the i.v. cannula was placed on the forehead, allowing the use of a manual delay is not recommended. Read more

Radiation Dose and Vessel Attenuation at High-Speed CTA of the Torso: Intra-Individual and Inter-Individual Comparison with Conventional CTA

posted by U. Joseph Schoepf, M.D. | Jan 16, 2012
U. Joseph Schoepf, M.D.

High-speed CTA is a promising technique for significantly reducing CTA-related radiation dose in non-obese patients. Read more

Radiation exposure and image quality in staged low-dose protocols for coronary dual-source CT angiography: a randomized comparison

posted by Michael M. Lell, M.D. | Jan 3, 2012
Michael M. Lell, M.D.

To evaluate staged low-dose approaches for coronary CT angiography (CTA) in which a standard sequence was added if the low-dose sequence did not allow reliable rule-out of coronary stenosis. Read more

Coronary CTA with a consistent dose below 1 mSv using prospectively electrocardiogram-triggered high-pitch spiral acquisition

posted by Michael M. Lell, M.D. | Dec 20, 2011
Michael M. Lell, M.D.

We evaluated the feasibility and image quality of a new scan mode for coronary computed tomography angiography (CTA) with an effective dose of less than 1 mSv. Read more

Evaluation of coronary stents and stenoses at different heart rates with dual source spiral CT (DSCT)

posted by Michael M. Lell, M.D. | Nov 26, 2011
Michael M. Lell, M.D.

The utilization of dual source computed tomography (DSCT) might improve the visualization of the coronary arteries by imaging at a temporal resolution of 83 milliseconds, independent of heart rate. Read more

Effect of CT scan protocols on x-ray-induced DNA double-strand breaks in blood lymphocytes of patients undergoing coronary CTA

posted by Michael M. Lell, M.D. | Nov 18, 2011
Michael M. Lell, M.D.

To compare in vivo DNA lesions induced during helical and sequential coronary CTA and to evaluate the effect of CT parameters on double-strand break (DSB) levels. Read more