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Quantitative dual-energy CT for phantomless evaluation of cancellous bone mineral density of the vertebral pedicle: correlation with pedicle screw pull-out strength

posted by Julian L. Wichmann, M.D. | Mar 27, 2015
Julian L. Wichmann, M.D.

To evaluate quantitative DECT for phantomless analysis of cancellous BMD of vertebral pedicles and to assess the correlation with pedicle screw pull-out strength. Read more

Coronary CT angiography-derived fractional flow reserve correlated with invasive fractional flow reserve measurements – initial experience with a novel physician-driven algorithm

posted by U. Joseph Schoepf, M.D. | Mar 23, 2015
U. Joseph Schoepf, M.D.

The present study aimed to determine the feasibility of a novel fractional flow reserve (FFR) algorithm based on coronary CT angiography that permits point-of-care assessment, without data transfer to core laboratories, for the evaluation of potentially ischemia-causing stenoses. Read more

Correction of lumen contrast-enhancement influence on non-calcified coronary atherosclerotic plaque quantification on CT

posted by Rozemarijn Vliegenthart, M.D., PhD | Mar 19, 2015
Rozemarijn Vliegenthart, M.D., PhD

Lumen contrast-enhancement influences non-calcified atherosclerotic plaque Hounsfield-unit (HU) values in CT. This study aimed to construct and validate an algorithm to correct for this influence. Read more

Advanced modelled iterative reconstruction for abdominal CT: Qualitative and quantitative evaluation

posted by Hatem Alkadhi, M.D., M.P.H., E.B.C.R. | Mar 13, 2015
Hatem Alkadhi, M.D., M.P.H., E.B.C.R.

To determine qualitative and quantitative image-quality parameters in abdominal imaging using advanced modelled iterative reconstruction (ADMIRE) with third-generation dual-source 192 section CT. Read more

Artifacts in dual-energy CT gout protocol: a review of 50 suspected cases with an artifact identification guide

posted by Savvas Nicolaou, M.D. | Mar 10, 2015
Savvas Nicolaou, M.D.

The objective of our study was to discover the types and incidence of artifacts in dual-energy CT (DECT) using datasets of 50 consecutive patients who underwent a four-limb DECT protocol for the evaluation of suspected gout. Read more

Iterative image reconstruction techniques for CT coronary artery calcium quantification: comparison with traditional filtered back projection in vitro and in vivo

posted by Rozemarijn Vliegenthart, M.D., PhD | Mar 7, 2015
Rozemarijn Vliegenthart, M.D., PhD

To investigate in vitro and in vivo the use of image-based and raw data-based iterative reconstruction algorithms for quantification of coronary artery calcium by using the Agatston score and subsequent cardiac risk stratification. Read more

Case: Low dose cardiac scan with Definition Force

posted by U. Joseph Schoepf, M.D. | Mar 4, 2015
U. Joseph Schoepf, M.D.
  • Fig 1 Low dose cardiac scan with Definition Force
  • Fig 2 Low dose cardiac scan with Definition Force
  • Fig 3 Low dose cardiac scan with Definition Force
  • Fig 4 Low dose cardiac scan with Definition Force

We present the case of a patient examined with third-generation dual-source turbo flash coronary CT angiography with simultaneous application of multiple techniques to reduce radiation dose resulting in an effective dose of 0.37 mSv. Read more


Experts
Hatem Alkadhi, M.D., M.P.H., E.B.C.R.

Radiologist, Professor –
Expert in CT, radiation dose, perfusion, dual-energy, iterative reconstruction


Julian L. Wichmann, M.D.

Resident in Diagnostic Radiology –
Expert in Dual-Energy, Cardiovascular Imaging


Thomas Henzler, MD

Associate Professor, Attending, Section Chief Cardiothoracic Imaging, CT –
Expert in Cardiac CT, 4D Perfusion CT, Pediatric CT, Dual-Energy CT, CT Angiography


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