Sebastian Leschka, M.D.

To differentiate proxy renal cystic lesions containing protein, blood, iodine contrast, or saline solutions using dual-energy CT (DECT) equipped with a new tin filter technology (TFT). Read more

To assess the effect of systolic data acquisition for ECG-triggered high-pitch CT on motion artefacts of coronary arteries in patients with high heart rates. Read more

To compare image quality and radiation dose of high-pitch CTA of the aortic valve-aortic root complex with and without prospective ECG-gating compared to a retrospectively ECG-gated standard-pitch acquisition. Read more

To evaluate the quality of stent lumen delineation using DSCT in the standard-pitch mode (SP) as compared to the high-pitch mode (HP) in a phantom study. Read more

Case history 81-year-old male presented for follow-up exam to indicate convalescence progress. 6 weeks before, he had been delivered for coiling and stent implantation due to ruptured aneurysm. He had complained about pain in the lower abdominal region. A day after the stent implantation a type II endoleakage had appeared. 4 … Read more

The objective was to prospectively investigate the diagnostic accuracy of high-pitch (HP) dual-source computed tomography coronary angiography (CTCA) compared with catheter coronary angiography (CCA) for the diagnosis of significant coronary stenoses. Read more

Please, click on the title to see the protocol. Read more

History A 55-year-old male patient (heart rate 75 bpm, body mass index 26.0 kg/sqm) suffered from progredient physical inefficiency and atypical chest pain since several months. Thoracic CT (non-ECG-gated) raised the suspicion of thrombosis of the innominate vein. There was also found a left mediastinal tubular contrast-enhanced structure which was suspected … Read more

History A 55-year-old male patient (heart rate 75 bpm, body mass index 26.0 kg/sqm) suffered from progredient physical inefficiency and atypical chest pain since several months. Thoracic CT (non-ECG-gated) raised the suspicion of thrombosis of the innominate vein. There was also found a left mediastinal tubular contrast-enhanced structure which was suspected … Read more

Abrar Hayat, Kuwait, has sent the following question: dose reduction in DSCT compared to 64-MDCT: Other venders claim that they have upgraded their 64-MDCT with new applications so that the dose is reduced by 50 % compared to their regular 64-MDCT! how does the DSCT compare to those? Am I going to … Read more

Objektive: To compare the image quality of mono- versus bisegment reconstruction algorithms for dual-source computed tomography coronary angiography (CTCA). Materials and methods: Eighty consecutive patients (27 women; average age, 60 +/- 12 years) were randomly assigned to 2 different CTCA scanning protocols: 40 patients (group A) underwent dual-source CTCA with a … Read more

The purpose of this study was to investigate the effect of low kilovoltage dual-source computed tomography coronary angiography (CTCA) on qualitative and quantitative image quality parameters and radiation dose. Dual-source CTCA with retrospective ECG gating was performed in 80 consecutive … Read more

Abstract To assess the prevalence and morphological characteristics of coronary artery ectasia (CAE) with CT coronary angiography (CTCA) in comparison to conventional catheterangiography (CCA), Dual-source CTCA examinations from 677 consecutive patients (223 women; median age 57 years) were retrospectively evaluated by two blinded observers for the presence of CAE defined as … Read more