Daniel Stocker
University of Zurich
RadiologyMagnetic resonance imagingProstateStenosisMedicine
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Publications 12
#1Daniel StockerH-Index: 4
#2Anton S. BeckerH-Index: 11
Last. Caecilia S. ReinerH-Index: 19
view all 8 authors...
OBJECTIVES: To compare interreader agreement and diagnostic accuracy of LI-RADS v2018 categorization using quantitative versus qualitative MRI assessment of arterial phase hyperenhancement (APHE) and washout (WO) of focal liver lesions. METHODS: Sixty patients (19 female; mean age, 56 years) at risk for HCC with 71 liver lesions (28 HCCs, 43 benign) who underwent contrast-enhanced MRI were included in this retrospective study. Four blinded radiologists independently assigned a qualitative LI-RAD...
#1Erik W. Holy (UZH: University of Zurich)H-Index: 15
#2D L Nguyen-Kim (UZH: University of Zurich)
Last. F.C. Tanner (UZH: University of Zurich)H-Index: 3
view all 12 authors...
Abstract Purpose To compare the correlation of transition zone prostate-specific antigen density (TZPSAD) versus whole gland (WG) density (PSAD) with Gleason score Methods In this single-center, retrospective cohort study, men undergoing MRI of the prostate in 2015 and 2016 who had a transperineal template saturation biopsy within 6 months of MRI were included (n = 178; median age 64 y, interquartile range [IQR] 58-68 y; PSA 6.6 ng/ml, 4.6-9.7 ng/ml). The WG and TZ were segmented voxel-wise on T...
#1Matthias EberhardH-Index: 4
#2Daniel StockerH-Index: 4
Last. Stephan BaumuellerH-Index: 17
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Background: To reduce the radiation exposure from chest computed tomography (CT), ultralow-dose CT (ULDCT) protocols performed at sub-millisievert levels were previously tested for the evaluation of pulmonary nodules (PNs). The purpose of our study was to investigate the effect of ULDCT and iterative image reconstruction on volumetric measurements of solid PNs. Methods: CT datasets of an anthropomorphic chest phantom containing solid microspheres were obtained with a third-generation dual-source...
#1Matthias Eberhard (UZH: University of Zurich)H-Index: 4
#2Daniel Stocker (UZH: University of Zurich)H-Index: 4
Last. Felix C. Tanner (UZH: University of Zurich)H-Index: 41
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Abstract Background Epicardial adipose tissue (EAT) is involved in inflammation and associated with cardiovascular risk factors. It is not known whether EAT affects outcome of patients undergoing transcatheter aortic valve replacement (TAVR). Methods 503 consecutive patients undergoing TAVR at our institution between May 2008 and November 2015 were enrolled in a prospective registry. Multi-detector computed tomography (CT) was used for EAT quantification. Outcome was assessed by 1-, 2-, and 3-ye...
1 CitationsSource
#1Daniel Stocker (UZH: University of Zurich)H-Index: 4
#2Herman P. Marquez (Hospital Universitario de Canarias)H-Index: 1
Last. Moritz C. Wurnig (UZH: University of Zurich)H-Index: 16
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Abstract Purpose To find potentially diagnostic texture analysis (TA) features and to evaluate the diagnostic accuracy of two-dimensional (2D) magnetic resonance (MR) TA for differentiation between hepatocellular carcinoma (HCC) and benign hepatocellular tumors in the non-cirrhotic liver in an exploratory MR-study. Materials and methods 108 non-cirrhotic patients (62 female; 41.5 ± 18.3 years) undergoing preoperative contrast-enhanced MRI were retrospectively included in this multi-center-study....
2 CitationsSource
OBJECTIVE: This study aimed to evaluate the performance of an automated workflow of volumetric liver proton density fat fraction (PDFFvol) and R2* quantification with automated inline liver volume (LV) segmentation. METHODS: Dual-echo and multiecho Dixon magnetic resonance images were evaluated in 74 consecutive patients (group A, PDFF < 10%; B, PDFF ≥ 10%; C, R2* ≥ 100 s; D, post-hemihepatectomy). The values of PDFFvol and R2*vol measurements across the LV were generated on multiecho images in ...
#1Daniel StockerH-Index: 4
#2Tim FinkenstaedtH-Index: 5
Last. Caecilia S. ReinerH-Index: 19
view all 9 authors...
OBJECTIVES: The aim of this study was to evaluate the performance of an automated workflow for whole-body magnetic resonance imaging (WB-MRI), which reduces user interaction compared with the manual WB-MRI workflow. MATERIALS AND METHODS: This prospective study was approved by the local ethics committee. Twenty patients underwent WB-MRI for myopathy evaluation on a 3 T MRI scanner. Ten patients (7 women; age, 52 ± 13 years; body weight, 69.9 ± 13.3 kg; height, 173 ± 9.3 cm; body mass index, 23.2...
#1Sebastian Winklhofer (UZH: University of Zurich)H-Index: 13
#2Ricarda Hinzpeter (UZH: University of Zurich)H-Index: 5
Last. Hatem Alkadhi (UZH: University of Zurich)H-Index: 68
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Purpose To compare and to combine iterative metal artifact reduction (MAR) and virtual monoenergetic extrapolations (VMEs) from dual-energy computed tomography (DECT) for reducing metal artifacts from intracranial clips and coils.
4 CitationsSource
#1Daniel StockerH-Index: 4
#2Andrei ManoliuH-Index: 12
Last. Olivio F. DonatiH-Index: 21
view all 7 authors...
PurposeThe aim of this study was to compare qualitative and quantitative image quality and geometric distortion of 4 magnetic resonance diffusion-weighted imaging (DWI) sequences of the prostate using comparable imaging parameters and similar acquisition times.Methods and MaterialsAxial T2-weighted
10 CitationsSource