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Sebastian Leschka
Kantonsspital St. Gallen
43Publications
19H-index
2,146Citations
Publications 43
Newest
#1Robert Roehle (Charité)H-Index: 5
#2Viktoria Wieske (Charité)H-Index: 1
Last.Marc Dewey (Charité)H-Index: 40
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The original version of this article, published on 19 March 2018, unfortunately contained a mistake. The following correction has therefore been made in the original: The names of the authors Philipp A. Kaufmann, Ronny Ralf Buechel and Bernhard A. Herzog were presented incorrectly.
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#1Michael Messerli (UZH: University of Zurich)H-Index: 7
#2Lukas Hechelhammer (HSG: University of St. Gallen)H-Index: 6
Last.Ralf W. Bauer (HSG: University of St. Gallen)H-Index: 22
view all 6 authors...
OBJECTIVES: To determine the value of ultra-low dose chest CT with tin filtration for ordinal coronary artery calcium (CAC) risk scoring. METHODS: 50 patients were prospectively included and underwent clinical standard dose chest CT (1.8±0.7mSv) and ultra-low dose CT (0.13±0.01mSv). Four radiologists estimated presence and extent of CAC. RESULTS: Weighted kappa values for CAC were 0.76-0.97 in standard dose and 0.75-0.95 in ultra-low dose CT (p<0.001). Good to excellent agreement was observed fo...
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Objective:To determine the value of ultralow-dose chest CT for estimating the calcified atherosclerotic burden of the thoracic aorta using tin-filter CT and compare its diagnostic accuracy with chest direct radiography. Methods::A total of 106 patients from a prospective, IRB-approved single-center study were included and underwent standard dose chest CT (1.7±0.7 mSv) by clinical indication followed by ultralow-dose CT with 100 kV and spectral shaping by a tin filter (0.13±0.01 mSv) to achieve c...
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#1Michael Messerli (UZH: University of Zurich)H-Index: 7
#2Céline Maywald (HSG: University of St. Gallen)
Last.Marc Schiesser (HSG: University of St. Gallen)H-Index: 22
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Background This study aims to determine the long-term prognostic value of coronary CT angiography (CCTA) prior to bariatric surgery in severely obese patients with a body mass index (BMI) ≥35 kg/m2.
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#1Michael Messerli (UZH: University of Zurich)H-Index: 7
#2Thomas Kluckert (HSG: University of St. Gallen)H-Index: 4
Last.Simon Wildermuth (HSG: University of St. Gallen)H-Index: 42
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Purpose To prospectively evaluate the accuracy of ultralow radiation dose CT of the chest with tin filtration at 100 kV for pulmonary nodule detection.
21 CitationsSource
#1Michael Messerli (UZH: University of Zurich)H-Index: 7
#2Thorsten Ottilinger (HSG: University of St. Gallen)H-Index: 1
Last.Ralf W. Bauer (HSG: University of St. Gallen)H-Index: 22
view all 7 authors...
Abstract Objectives To determine whether ultralow dose chest CT with tin filtration can be used for emphysema quantification and lung volumetry and to assess differences in emphysema measurements and lung volume between standard dose and ultralow dose CT scans using advanced modeled iterative reconstruction (ADMIRE). Methods 84 consecutive patients from a prospective, IRB-approved single-center study were included and underwent clinically indicated standard dose chest CT (1.7 ± 0.6 mSv) and addi...
7 CitationsSource
#1Fabian MorsbachH-Index: 14
#2Lotus DesbiollesH-Index: 41
Last.Hatem AlkadhiH-Index: 68
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ObjectivesThe aims of this study were to introduce the measure noise texture deviation as quantitative parameter for evaluating iterative reconstruction (IR)–specific artifacts in computed tomography (CT) images and to test whether IR-specific artifacts, quantified through this measure, are reduced
11 CitationsSource
#1Michael Messerli (HSG: University of St. Gallen)H-Index: 7
#2Fabian Rengier (University Hospital Heidelberg)H-Index: 15
Last.Claas Philip Nähle (HSG: University of St. Gallen)H-Index: 1
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Rationale and Objectives To evaluate the influence of advanced modeled iterative reconstruction (ADMIRE) on the coronary artery calcium (CAC) scores by computed tomography (CT). Materials and Methods Sixty patients underwent CAC imaging with dual-source 192-slice CT. Agatston, volume and mass score were calculated from filtered back projection (FBP) and iterative reconstructions with different levels of ADMIRE. Friedman test and Wilcoxon rank sum test were used for multiple comparisons of CAC va...
5 CitationsSource
#1Evelyn Dappa (UZH: University of Zurich)H-Index: 3
#2Kai Higashigaito (UZH: University of Zurich)H-Index: 7
Last.Hatem Alkadhi (UZH: University of Zurich)H-Index: 68
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Volume rendering (VR) represents today's standard three-dimensional (3-D) image post-processing technique, and often is used to visualize complex anatomical information. Recently, a novel 3-D technique for post-processing of computed tomography (CT) image data has been introduced, which is called cinematic rendering (CR). The objective of this review is to illustrate the image appearance and potential value of CR in comparison with conventional VR in a number of various applications and differen...
47 CitationsSource
#1Holger Joswig (HSG: University of St. Gallen)H-Index: 10
#2Lorenz Epprecht (HSG: University of St. Gallen)H-Index: 2
Last.Martin N. Stienen (HSG: University of St. Gallen)H-Index: 19
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Background A large number of reports have not been able to clarify the pathophysiology of Terson syndrome (TS) in aneurysmal subarachnoid hemorrhage (aSAH).
9 CitationsSource
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