Ralf Bauer
Ralf Bauer, M.D.

Resident in training, head of CT research – Expert in pulmonary vascular/lung imaging, cardiovascular

Curriculum vitae

All posts of Ralf Bauer, M.D.

Dose and image quality at CT pulmonary angiography – comparison of first and second generation dual-energy CT and 64-slice CT

posted by Ralf Bauer, M.D. | Sep 8, 2011
Ralf Bauer, M.D.

To compare dose and image quality of 64-slice, first and second generation dual-energy CT (DECT) for CT pulmonary angiography (CTPA). Read more

Dual energy CT pulmonary blood volume assessment in acute pulmonary embolism – correlation with D-dimer level, right heart strain and clinical outcome

posted by Ralf Bauer, M.D. | Aug 4, 2011
Ralf Bauer, M.D.

To investigate the role of perfusion defect (PD) size on dual energy CT pulmonary blood volume assessment as predictor of right heart strain and patient outcome and its correlation with d-dimer levels in acute pulmonary embolism (PE). Read more

Lung perfusion analysis with dual energy CT in patients with suspected pulmonary embolism – Influence of window settings on the diagnosis of underlying pathologies of perfusion defects

posted by Ralf Bauer, M.D. | Jul 13, 2011
Ralf Bauer, M.D.

This study looks on lung perfusion analysis with dual energy CT (DECT) and investigates the influence of different window settings on the identification of the underlying pathologies for different patterns of perfusion defects (PD). Read more

3. Dual Energy CT Hands-on-Workshop, Frankfurt, Germany

posted by Ralf Bauer, M.D. | Jun 7, 2011

Sep 17, 2011; We will focus on Dual Energy applications that are internationally established in the clinical routine so far. The workshop is held in German language. Read more

Dual-energy CT for the assessment of chronic myocardial infarction in patients with chronic coronary artery disease: comparison with 3-T MRI

posted by Ralf Bauer, M.D. | Apr 18, 2011
Ralf Bauer, M.D.

The purpose of this article is to compare the performance of dual-energy CT with that of 3-T MRI with late enhancement for the detection of chronic myocardial infarction during first-pass coronary CT angiography (CTA). Read more

Computer-Based Automated Left Atrium Segmentation and Volumetry from ECG-Gated Coronary CTA Data: Comparison with Manual Slice Segmentation and Ultrasound Planimetric Methods

posted by Ralf Bauer, M.D. | Mar 28, 2011
Ralf Bauer, M.D.

The prototype software showed excellent agreement with manual slice segmentation with the least time consumption. Read more

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

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

Case: Diagnosis of ruptured cocaine capsules in the rectum of bodypacker

posted by Ralf Bauer, M.D. | Dec 30, 2010
Ralf Bauer, M.D.
  • Fig. 1 Cocaine capsules distributed throughout the whole gut.
  • Fig. 2 Virtual colonoscopy view.
  • Fig. 3 Virtual colonoscopy view.

With the use of DECT, the reliable diagnosis of ruptured cocaine capsule could be made and immediate medical help could be provided. Further, we are happy to be able to report as the first institute on the Dual Energy behavior of Columbian cocaine. Read more

Dual-energy CT for the assessment of chronic myocardial infarction in patients with chronic coronary artery disease: comparison with 3-T MRI

posted by Ralf Bauer, M.D. | Oct 12, 2010
Ralf Bauer, M.D.

The purpose of this article is to compare the performance of dual-energy CT with that of 3-T MRI with late enhancement for the detection of chronic myocardial infarction during first-pass CTA. Read more

2. Dual Energy CT Hands-on-Workshop, Frankfurt, Germany

posted by Ralf Bauer, M.D. | Sep 9, 2010

Nov 13, 2010; 08:30 to 16:00. We will focus on Dual Energy applications that are internationally established in the clinical routine so far. The workshop is held in German language. Read more

CT coronary angio

posted by Ralf Bauer, M.D. | Jul 6, 2010
Ralf Bauer, M.D.

The following question has been sent by Akhilesh Singh: CT coronary angio – what is the normal range of calcium score? Ralf Bauer,  MD, Clinic of the Goethe University, Frankfurt, Germany: Dear Mr. Singh, thank you for your question! But actually, it is not easy to answer. First, there is no real “normal” range. … Read more

Case: Adult CAD Rule out Flash

posted by Ralf Bauer, M.D. | Mar 19, 2010
Ralf Bauer, M.D.
  • Case: Adult CAD Rule out Flash
  • Case: Adult CAD Rule out Flash
  • Case: Adult CAD Rule out Flash
  • Case: Adult CAD Rule out Flash

Case history: 68 year old patient with atypical chest pain complaints and know year-long arterial hypertension. Ultrasound showed concentric LV hypertrophy and aortic valve stenosis grade 1. Rule out coronary artery disease. Resting heart rate was 50 bpm and no betablockers were injected. Read more

Recommended Reading about Dual Source CT and reducing radiation exposure

posted by Ralf Bauer, M.D. | Feb 3, 2010
Ralf Bauer, M.D.

The following question has been sent by Patrick, CT Tech: Our facilty is currently operating a siemens Definition Scanner. I was hoping you could recommend some reading material on Dual Source CT. Also some info on how to reduce radiation exposure. Ralf Bauer, MD, Clinic of the Goethe University, Frankfurt, Germany: Dear … Read more

Compound analysis of gallstones using dual energy computed Tomography – Results in a phantom model

posted by Ralf Bauer, M.D. | Nov 12, 2009
Ralf Bauer, M.D.

The potential of dual energy computed tomography (DECT) for the analysis of gallstone compounds was investigated. The main goal was to find parameters, that can reliably define high percentage (> 70 %) cholesterol stones without calcium components. Read more

Pulmonary embolism with Dual Energy LungPBV

posted by Ralf Bauer, M.D. | Mar 4, 2009
Ralf Bauer, M.D.

Tips and tricks As the FOV is limited to 26 cm due to the smaller detector of the B-system, it is very important to place the patient centrally in the scan field to cover as much lung parenchyma as possible. Use a lateral and … Read more


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