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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

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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

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Case: Dual Energy Lung Perfusion CT in Children: Feasible, Useful and Officially Recognized with the Walter E. Berdon Award

posted by Hyun Woo Goo, M.D. | Nov 22, 2011
Hyun Woo Goo, M.D.
  • Table 1: Examination protocol
  • 1. 7-year-old child with familial dilated cardiomyopathy and right ventricular thrombi. 1. Axial DECT PBV image shows perfusion defect in the left dorsal lung. Small right pleural effusion is noted.
  • 2. Sagittal DECT PBV image also shows perfusion defect in the left dorsal lung. Large thrombi (arrows) are seen in the right ventricle. Pericardial effusion is noted.
  • 3. VRT view of pulmonary vessels shows no evidence of thromboembolism in the major pulmonary arteries but decreased visualization of small peripheral pulmonary arterial branches in both lower lung fields.

At Asan Medical Center, DECT is routinely performed in children who are suspected of having pulmonary thromboembolism. Read more

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Image Quality and Radiation Dose of Dual-Energy CT of the Head and Neck Compared with a Standard 120-kVp Acquisition

posted by Josef Matthias Kerl, M.D. | Nov 7, 2011
Josef Matthias Kerl, M.D.

The aim of this work was to compare image quality and radiation dose between a DE-derived WA image dataset and a standard SECT acquisition of the H&N. Read more

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Urinary calculi composed of uric acid, cystine, and mineral salts: differentiation with dual-energy CT at a radiation dose comparable to that of intravenous pyelography

posted by Martin Heuschmid, M.D. | Sep 16, 2011
Martin Heuschmid, M.D.

To retrospectively evaluate radiation dose, image quality, and the ability to differentiate urinary calculi of differing compositions by using low-dose dual-energy CT. Read more

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Coronary CTA: image quality, diagnostic accuracy, and potential for radiation dose reduction using a novel iterative image reconstruction technique-comparison with traditional filtered back projection

posted by U. Joseph Schoepf, M.D. | Sep 1, 2011
U. Joseph Schoepf, M.D.

To compare image noise, image quality and diagnostic accuracy of cCTA using a novel iterative reconstruction algorithm versus traditional filtered back projection. Read more

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Dual-energy CT: is there a penalty in image quality and radiation dose compared with single-energy CT?

posted by Martin Heuschmid, M.D. | Jul 29, 2011
Martin Heuschmid, M.D.

To assess dose and image quality of dual-energy (DE) mixed images in comparison to single-energy (SE) images. Read more

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