Publications by authors named "Winkel D"

Article Synopsis
  • Pulmonary transit time (PTT) measures how long it takes blood to move from the right to the left ventricle and can indicate heart failure-related issues like diastolic dysfunction (DD) and mitral valve regurgitation (MVR).
  • In a study of 83 patients using stress perfusion cardiovascular magnetic resonance (CMR) scans, higher PTT and normalized PTT (nPTT) were linked to more severe cases of DD and MVR.
  • PTT values under 8 seconds can effectively rule out DD and MVR with a 70% probability, highlighting PTT as a useful and accessible measure for evaluating patients' heart conditions.
View Article and Find Full Text PDF

Purpose To determine whether the unsupervised domain adaptation (UDA) method with generated images improves the performance of a supervised learning (SL) model for prostate cancer (PCa) detection using multisite biparametric (bp) MRI datasets. Materials and Methods This retrospective study included data from 5150 patients (14 191 samples) collected across nine different imaging centers. A novel UDA method using a unified generative model was developed for PCa detection using multisite bpMRI datasets.

View Article and Find Full Text PDF

The ever-increasing and expanding globalisation of trade and transport underpins the escalating global problem of biological invasions. Developing biosecurity infrastructures is crucial to anticipate and prevent the transport and introduction of invasive alien species. Still, robust and defensible forecasts of potential invaders are rare, especially for species without known invasion history.

View Article and Find Full Text PDF

Current online adaptive radiotherapy (oART) workflows require dedicated equipment. Our aim was to develop and implement an oART workflow for a C-arm linac which can be performed using standard clinically available tools. A workflow was successfully developed and implemented.

View Article and Find Full Text PDF
Article Synopsis
  • This study compared the performance of a 0.55-T low-field MRI scanner and a 1.5-T high-field MRI scanner in assessing left ventricular (LV) and right ventricular (RV) volume and function in healthy volunteers and cardiac patients.
  • Data showed a very strong correlation (0.98) between measurements from the two scanners, with average deviations of only 1.6% and 1.1% for healthy volunteers and cardiac patients, respectively.
  • The results suggest that the 0.55-T scanner can provide similar quantitative cardiac metrics as the 1.5-T scanner, although it requires a longer acquisition time.
View Article and Find Full Text PDF

Transperineal fusion prostate biopsy has a considerable learning curve (LC). Robotic-assisted transperineal MRI/Ultrasound fusion-guided biopsy (RA-TP-FBx) may have an easier LC due to automatization. We aimed to assess the LC of RA-TP-FBx and analyze its most difficult steps.

View Article and Find Full Text PDF

Background: Seizure detection is challenging outside the clinical environment due to the lack of comfortable, reliable, and practical long-term neurophysiological monitoring devices. We developed a novel, discreet, unobstructive in-ear sensing system that enables long-term electroencephalography (EEG) recording. This is the first study we are aware of that systematically compares the seizure detection utility of in-ear EEG with that of simultaneously recorded intracranial EEG.

View Article and Find Full Text PDF

Objectives: The aortic root (AoR) rotation and its spatial morphology at the base of the heart were postulated but not described in every detail. AoR rotation modalities may play an important role in decision-making during AoR surgery and its outcome. The aim was to provide a detailed spatial anatomy of the AoR rotation and its relation to the vital surrounding structure.

View Article and Find Full Text PDF

The increasing use of transcatheter aortic valves in patients with aortic stenosis has led to a higher number of valve-in-valve procedures due to gradual valve degeneration. We present a case of a 72-year-old woman who received transcatheter aortic valve implantation (TAVI) using a Lotus valve due to severe aortic stenosis, which showed valve degeneration several years after the initial procedure. After heart-team discussion, TAVI-in-TAVI was planned using an Evolut pro+ valve, which allowed for full coverage of the Lotus valve and maintenance of coronary flow, resulting in a well-functioning valve with no regurgitation and normal performance.

View Article and Find Full Text PDF

Woodworthia is a diverse genus of diplodactylid geckos found in Aotearoa/ New Zealand, with 17 likely species. Despite this diversity, only two species have been formally described: Woodworthia maculata (Gray, 1845) and W. chrysosiretica (Robb, 1980).

View Article and Find Full Text PDF

Background: Diffuse parenchymal liver diseases are contributing substantially to global morbidity and represent major causes of deaths worldwide. The aim of our study is to assess whether established hepatic fat and iron quantitation and relaxometry-based quantification of hepatocyte-specific contrast material as surrogate for liver function estimation allows to evaluate liver fibrosis.

Methods: Retrospective consecutive study.

View Article and Find Full Text PDF

Background: Dizziness is a frequent presentation in patients presenting to emergency departments (EDs), often triggering extensive work-up, including neuroimaging. Therefore, gathering knowledge on final diagnoses and outcomes is important. We aimed to describe the incidence of dizziness as primary or secondary complaint, to list final diagnoses, and to determine the use and yield of neuroimaging and outcomes in these patients.

View Article and Find Full Text PDF

Aims: No data is available about the significance of cardiovascular magnetic resonance (CMR) derived vascular distensibility (VD) and vessel wall ratio (VWR) for risk stratification in patients with type 2 diabetes mellitus (T2DM). Therefore, this study aimed to investigate the effects of T2DM on VD and VWR using CMR in both central and peripheral territories.

Methods: Thirty-one T2DM-patients and nine controls underwent CMR.

View Article and Find Full Text PDF

Hypertensive heart disease (HHD) develops in response to the chronic exposure of the left ventricle and left atrium to elevated systemic blood pressure. Left ventricular structural changes include hypertrophy and interstitial fibrosis that in turn lead to functional changes including diastolic dysfunction and impaired left atrial and LV mechanical function. Ultimately, these changes can lead to heart failure with a preserved (HFpEF) or reduced (HFrEF) ejection fraction.

View Article and Find Full Text PDF

Objective: The impact of responsive neurostimulation (RNS) on neuropsychiatric and psychosocial outcomes has not been extensively evaluated outside of the original clinical trials and post-approval studies. The goal of this study was to ascertain the potential real-world effects of RNS on cognitive, psychiatric, and quality of life (QOL) outcomes in relation to seizure outcomes by examining 50 patients undergoing RNS implantation for drug-resistant epilepsy (DRE).

Methods: We performed a retrospective review of all patients treated at our institution with RNS for DRE with at least 12 months of follow-up.

View Article and Find Full Text PDF

Purpose: To assess whether high temporal/spatial resolution GRASP MRI acquired during routine clinical imaging can identify several degrees of renal function impairment referenced against renal dynamic scintigraphy.

Methods: This retrospective study consists of method development and method verification parts. During method development, patients subject to renal imaging using gadoterate meglumine and GRASP post-contrast MRI technique (TR/TE 3.

View Article and Find Full Text PDF

Aims: Pulmonary transit time (PTT) is the time blood takes to pass from the right ventricle to the left ventricle via pulmonary circulation. We aimed to quantify PTT in routine cardiovascular magnetic resonance imaging perfusion sequences. PTT may help in the diagnostic assessment and characterization of patients with unclear dyspnoea or heart failure (HF).

View Article and Find Full Text PDF

Background: Deep-learning-based computer-aided diagnosis (DL-CAD) systems using MRI for prostate cancer (PCa) detection have demonstrated good performance. Nevertheless, DL-CAD systems are vulnerable to high heterogeneities in DWI, which can interfere with DL-CAD assessments and impair performance. This study aims to compare PCa detection of DL-CAD between zoomed-field-of-view echo-planar DWI (z-DWI) and full-field-of-view DWI (f-DWI) and find the risk factors affecting DL-CAD diagnostic efficiency.

View Article and Find Full Text PDF

Objectives: To develop and test a Retina U-Net algorithm for the detection of primary lung tumors and associated metastases of all stages on FDG-PET/CT.

Methods: A data set consisting of 364 FDG-PET/CTs of patients with histologically confirmed lung cancer was used for algorithm development and internal testing. The data set comprised tumors of all stages.

View Article and Find Full Text PDF

Introduction: Robotic-assisted transperineal MRI-US-fusion guided biopsy of the prostate is a novel and highly accurate procedure. The aim of this study was to evaluate the MonaLisa prostate biopsy system in terms of safety, tolerability, and patient-related outcomes.

Methods: This prospective study included 228 patients, who had undergone Robotic-assisted transperineal MRI-US-fusion guided biopsy of the prostate at the University Hospital Basel between January 2020 and June 2022.

View Article and Find Full Text PDF

A rare case of a previously treated thoraco-abdominal aortic aneurysm eroding into the thoracic spine is described. Initially, several follow-up CT angiography scans showed an increasing aneurysm sack, but no endoleak could be depicted. Then, a new rapidly developing erosion into the thoracic spine was noted.

View Article and Find Full Text PDF

Objectives: The objectives of this study were to assess patient comfort when imaged on a newly introduced 0.55T low-field magnetic resonance (MR) scanner system with a wider bore opening compared to a conventional 1.5T MR scanner system.

View Article and Find Full Text PDF

Background: Prostate biopsy represents one of the most frequently performed urologic procedures worldwide and therefore presupposes knowledge on potential effects like on the erectile function, especially in extensive or repeated biopsies. The robotic-assisted biopsy system (Mona Lisa) offers a minimal invasive approach via only two incision points ensuring maximal accuracy combined with protection of the neurovascular bundle of the prostate.

Objective: Our purpose was to analyse the impact of robotic-assisted transperineal biopsy of the prostate on the erectile function.

View Article and Find Full Text PDF

Objectives: To evaluate the effect of a deep learning-based computer-aided diagnosis (DL-CAD) system on experienced and less-experienced radiologists in reading prostate mpMRI.

Methods: In this retrospective, multi-reader multi-case study, a consecutive set of 184 patients examined between 01/2018 and 08/2019 were enrolled. Ground truth was combined targeted and 12-core systematic transrectal ultrasound-guided biopsy.

View Article and Find Full Text PDF