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Case: Familial Aortic Aneurysm

posted by Ronald Booij | Dec 27, 2011
Ronald Booij
  • case_protocol_Familial Aortic Aneurysm
  • Fig. 1 VRT of total aorta
  • Fig. 2 VRT of total aorta
  • Fig. 3 VRT of total aorta

CT examination in aorta totalis protocol. Dose was around 1.1mSv and also because of the high pitch mode, contrast media material was saved. Read more

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Case: Thorax of 7-year old with Flash

posted by Ronald Booij | Dec 12, 2011
Ronald Booij
  • case_protocol_Thorax-of-7-year-old-with-Flash
  • Fig. 1 VRT shows no motion and nice visualization of lung and vessels
  • Fig. 2 Fused MPR and VRT shows no motion and nice visualization of lung and vessels
  • Fig. 3 Fused MPR and VRT shows no motion and nice visualization of lung and vessels

A very challenging case, which can be made easy by using the flash technique. Read more

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Case: RIPIT to the Rescue – Fast CT Examination for Trauma Patients

posted by Savvas Nicolaou, M.D. | Oct 31, 2011
Savvas Nicolaou, M.D.
  • Table Case - RIPIT to the Rescue
  • 1, 2. Volume Rendered (VRT) view showing vascular status of this trauma patient.
  • 3, 4. Fast pitch of 1.8 allows long range scanning from head to pelvis. The sagittal view (Fig. 4) shows artifact free aortic angiogram.
  • 5. Subarachnoid hemorrhage delineated with a fused MPR (Multi Planar Reformation) and VRT visualization technique (arrow). <br>6. Coronal MPR of the brain (calculated out of the full body scan) shows the extension of the bleeding (arrow).

In the trauma setting, the “golden hour” is critical. The FLASH RIPIT scan can provide critical, life-saving information in a matter of seconds. Read more

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Dynamic, Quantitative Myocardial Stress CT Perfusion Imaging: Initial Clinical Experience

posted by U. Joseph Schoepf, M.D. | Jul 8, 2011
U. Joseph Schoepf, M.D.

CT may have potential for the integrative assessment of all aspects of coronary artery disease including coronary artery morphology, cardiac function, perfusion, and viability with a single modality. Read more

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Comparison of Statistical Iterative and Filtered Back Projection Image Reconstruction Techniques for the CT Assessment of Coronary Artery Stents

posted by U. Joseph Schoepf, M.D. | Jun 30, 2011
U. Joseph Schoepf, M.D.

Iterative image reconstruction techniques incrementally improve the assessment of coronary artery stents by reducing image noise and beam-hardening artifacts. Read more

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Accuracy and Precision of Dual-Energy CT for Measuring Iodine Concentration: Validation in Phantom Studies

posted by U. Joseph Schoepf, M.D. | Apr 11, 2011
U. Joseph Schoepf, M.D.

Based on quantification of iodine within tissues, DECT may be able to estimate blood volume as a surrogate of organ perfusion at contrast enhanced CT. Read more

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Case: Ruling out Coronary Artery disease with 0.69 mSv

posted by Ralf Bauer, M.D. | Mar 8, 2011
Ralf Bauer, M.D.
  • Fig 1: Volume Rendered display of the major coronary arteries underlined with MPR
  • Fig 2: Caudo-Cranial view of the distal part of the RCA and PDA.
  • Fig 3: Curved planar reformatted display of the RCA.
  • Fig 4: Curved planar reformatted display of the LAD.

Coronary CTA using 100 kV tube potential and the FLASH spiral acquisition mode allowed ruling out coronary artery disease in this normal-sized adult patient with a DLP of 49 in only 0.29 s scan time without the use of beta blockers. Read more

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High-Speed, Low Radiation-Dose CT Angiography of the Chest: Performance of an Individualized, Patient-Based Contrast Media Injection Algorithm

posted by U. Joseph Schoepf, M.D. | Feb 16, 2011
U. Joseph Schoepf, M.D.

At sub-second, low radiation dose CTA of the chest, use of individualized, patient-based contrast media delivery protocols results in reliable, diagnostic contrast enhancement of all target vessels. Read more

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Case: Dual Energy Coronary CTA for Evaluation of Chest Pain after RCA Revascularization

posted by Ralf Bauer, M.D. | Feb 2, 2011
Ralf Bauer, M.D.
  • Fig. 1 Prior to recanalization: Cardiac catheterization showed a prominent RV branch and in-stent occlusion of the mid and distal RCA.
  • Fig. 2 Curved multiplanar reformates showed in-stent thrombosis with occlusion beginning in the proximal RCA. In the RV branch, which was clearly visible on pre-interventional cath images, no contrast material filling could be delineated.
  • Fig. 3 Dual Energy iodine mapping showed a large area with decreased perfusion in the arterial phase in the inferoseptal wall extending from the base to the apex of the heart.
  • Fig. 4 Late enhancement was present in the inferoseptal wall corresponding to the perfusion defect in arterial phase.

In this case, Dual Energy coronary CTA was used to image a complication of interventional recanalization, i.e. acute in-stent thrombosis, while the initial clinical diagnosis of acute aortic dissection could reliably be ruled out. Read more

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Quantitative Analysis of Myocardial Iodine Concentration during Stress and Rest Based on Dual-Energy CT – Comparison with Cardiac Perfusion MRI

posted by U. Joseph Schoepf, M.D. | Jan 27, 2011
U. Joseph Schoepf, M.D.

Using iodine concentration as a quantitative surrogate for perfusion could enhance the potential role of DECT as a stand-alone modality for integrative imaging of ischemic heart disease. Read more

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