Publications by authors named "S Vande Voort"
Article Synopsis
- Federated learning (FL) is a technique that allows hospitals to develop predictive models without sharing patient records, but it may affect model performance negatively compared to centralized methods.
- The study evaluated four strategies for predicting 30-day mortality in patients undergoing transcatheter aortic valve implantation (TAVI), including centralized learning and various federated approaches.
- The results showed that federated approaches delivered similar predictive performance in terms of the area under the curve (AUC) and calibration, suggesting that FL can be a practical option for developing clinical prediction models.
Background: We aimed to describe the microvascular features of three types of adult-type diffuse glioma by comparing dynamic susceptibility contrast (DSC) perfusion magnetic resonance imaging (MRI) with intraoperative high-frame-rate ultrafast Doppler ultrasound.
Methods: Case series of seven patients with primary brain tumours underwent both DSC perfusion MRI and intra-operative high-frame-rate ultrafast Doppler ultrasound. From the ultrasound images, three-dimensional vessel segmentation was obtained of the tumour vascular bed.
Cerebral hypoxia significantly impacts the progression of brain tumors and their resistance to radiotherapy. This study employed streamlined quantitative blood-oxygen-level-dependent (sqBOLD) MRI to assess the oxygen extraction fraction (OEF)-a measure of how much oxygen is being extracted from vessels, with higher OEF values indicating hypoxia. Simultaneously, we utilized vessel size imaging (VSI) to evaluate microvascular dimensions and blood volume.
View Article and Find Full Text PDFThe front cover artwork is provided by the TheoCheM group at the Vrije Universiteit Amsterdam. The image shows how, in X •••H C-Y complexes, the Lewis base X tetrel-binds to the central C while sterically pushing the H atoms towards C; hence, the compression and blueshift of the H-C bonds. Read the full text of the Research Article at 10.
View Article and Find Full Text PDFAmide proton transfer (APT)-weighted chemical exchange saturation transfer (CEST) imaging is a recent MRI technique making its way into clinical application. In this work, we investigated whether APT-weighted CEST imaging can provide reproducible measurements across scan sessions and scanners. Within-session, between-session and between scanner reproducibility was calculated for 19 healthy volunteers and 7 patients with a brain tumor on two 3T MRI scanners.
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