Jef Vandemeulebroucke
Motion estimationAlgorithmRadiologyBiomedical engineeringMagnetic resonance imagingDiffusion MRIAugmented realityArtificial intelligenceImage registrationPattern recognitionPairwise comparisonLungFour-Dimensional Computed TomographyNuclear medicineWhole body mriMedical imagingComputer visionBreathingComputer scienceMedicineRotation (mathematics)SegmentationImage processing
Publications 58
#1Frederick Van Gestel (Vrije Universiteit Brussel)
#2Taylor FrantzH-Index: 1
Last. Bart Jansen (Katholieke Universiteit Leuven)H-Index: 19
view all 13 authors...
OBJECTIVE The traditional freehand technique for external ventricular drain (EVD) placement is most frequently used, but remains the primary risk factor for inaccurate drain placement. As this procedure could benefit from image guidance, the authors set forth to demonstrate the impact of augmented-reality (AR) assistance on the accuracy and learning curve of EVD placement compared with the freehand technique. METHODS Sixteen medical students performed a total of 128 EVD placements on a custom-ma...
#1Thierry Scheerlinck (Vrije Universiteit Brussel)H-Index: 12
#2Elien De Winter (Vrije Universiteit Brussel)
Last. Jef Vandemeulebroucke (iMinds)H-Index: 14
view all 6 authors...
AIMS Hip arthroplasty does not always restore normal anatomy. This is due to inaccurate surgery or lack of stem sizes. We evaluated the aptitude of four total hip arthroplasty systems to restore an anatomical and medialized hip rotation centre. METHODS Using 3D templating software in 49 CT scans of non-deformed femora, we virtually implanted: 1) small uncemented calcar-guided stems with two offset options (Optimys, Mathys), 2) uncemented straight stems with two offset options (Summit, DePuy Synt...
#1Dimitri Stylemans (Vrije Universiteit Brussel)H-Index: 2
#2Jelle Smet (Vrije Universiteit Brussel)H-Index: 1
Last. Sylvia Verbanck (Vrije Universiteit Brussel)H-Index: 40
view all 8 authors...
ABSTRACT Introduction Most post COVID-19 follow-up studies are limited to a follow-up of 3 months. Whether a favorable evolution in lung function and/or radiological abnormalities is to be expected beyond 3 months is uncertain. Materials and methods We conducted a real-life follow-up study assessing the evolution in lung function, chest CT and ventilation distribution between 10 weeks and 6 months after diagnosis of COVID-19 pneumonia. Results and discussion: Seventy-nine patients were assessed ...
4 CitationsSource
#1M. Polfliet (Erasmus University Medical Center)
#2M.S. Hendriks (Erasmus University Medical Center)
Last. Stefan Klein (Erasmus University Medical Center)H-Index: 41
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Abstract The aim of this study was to evaluate and present an automated method for registration of magnetic resonance imaging (MRI) and computed tomography (CT) or cone beam CT (CBCT) images of the mandibular region for patients with oral squamous cell carcinoma (OSCC). Registered MRI and (CB)CT could facilitate the three-dimensional virtual planning of surgical guides employed for resection and reconstruction in patients with OSCC with mandibular invasion. MRI and (CB)CT images were collected r...
#1Nicolas Michoux (Cliniques Universitaires Saint-Luc)H-Index: 17
#2Jakub Ceranka (Vrije Universiteit Brussel)H-Index: 2
Last. Frédéric Lecouvet (Cliniques Universitaires Saint-Luc)H-Index: 60
view all 17 authors...
OBJECTIVES Multicenter oncology trials increasingly include MRI examinations with apparent diffusion coefficient (ADC) quantification for lesion characterization and follow-up. However, the repeatability and reproducibility (R&R) limits above which a true change in ADC can be considered relevant are poorly defined. This study assessed these limits in a standardized whole-body (WB)-MRI protocol. METHODS A prospective, multicenter study was performed at three centers equipped with the same 3.0-T s...
2 CitationsSource
#2Taylor Frantz (Vrije Universiteit Brussel)H-Index: 1
Last. Johnny DuerinckH-Index: 12
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BACKGROUND Many surgical procedures, such as placement of intracranial drains, are currently being performed blindly, relying on anatomical landmarks. As a result, accuracy results still have room for improvement. Neuronavigation could address this issue, but its application in an urgent setting is often impractical. Augmented reality (AR) provided through a head-worn device has the potential to tackle this problem, but its implementation should meet physicians' needs. METHODS The Surgical Augme...
1 CitationsSource
#1Sylvia Verbanck (Vrije Universiteit Brussel)H-Index: 40
#2Mathias PolflietH-Index: 5
Last. Jef Vandemeulebroucke (Vrije Universiteit Brussel)H-Index: 14
view all 7 authors...
#1J. Dhont (Vrije Universiteit Brussel)H-Index: 8
#2Dirk Verellen (University of Antwerp)H-Index: 5
Last. Jef Vandemeulebroucke (Vrije Universiteit Brussel)H-Index: 14
view all 5 authors...
INTRODUCTION Digitally reconstructed radiographs (DRRs) represent valuable patient-specific pre-treatment training data for tumor tracking algorithms. However, using current rendering methods, the similarity of the DRRs to real X-ray images is limited, requires time-consuming measurements and/or are computationally expensive. In this study we present RealDRR, a novel framework for highly realistic and computationally efficient DRR rendering. MATERIALS AND METHODS RealDRR consists of two componen...
6 CitationsSource
#1Sylvia VerbanckH-Index: 40
#2Mathias Polfliet (Vrije Universiteit Brussel)H-Index: 5
Last. Jef Vandemeulebroucke (Vrije Universiteit Brussel)H-Index: 14
view all 7 authors...
Smoking-induced ventilation heterogeneity measured at the mouth via established washout indices (lung clearance index LCI and alveolar mixing efficiency AME) potentially results from unequal expansion, which can be quantified by CT, and structural changes down to the lung periphery, characterized by CT parametric response mapping indices (PRMfSAD,PRMEmph). By combining CT imaging and N2 washout tests in smokers, we specifically examined the roles of unequal lung expansion and of peripheral struc...
9 CitationsSource
#1Jakub Ceranka (Vrije Universiteit Brussel)H-Index: 2
#2Sabrina Verga (Vrije Universiteit Brussel)H-Index: 1
Last. Jef Vandemeulebroucke (Vrije Universiteit Brussel)H-Index: 14
view all 10 authors...
PURPOSE: To improve multi-atlas segmentation of the skeleton from whole-body MRI. In particular, we study the effect of employing the atlas segmentations to iteratively mask tissues outside of the region of interest to improve the atlas alignment and subsequent segmentation. METHODS: An improved atlas registration scheme is proposed. Starting from a suitable initial alignment, the alignment is refined by introducing additional stages of deformable registration during which the image sampling is ...
4 CitationsSource