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van Valenberg, W. (author), Klein, S. (author), Vos, F.M. (author), Koolstra, Kirsten (author), van Vliet, L.J. (author), Poot, D.H.J. (author)
Quantitative MRI methods that estimate multiple physical parameters simultaneously often require the fitting of a computational complex signal model defined through the Bloch equations. Repeated Bloch simulations can be avoided by matching the measured signal with a precomputed signal dictionary on a discrete parameter grid (i.e. lookup table...
journal article 2020
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Rassam, F. (author), Zhang, T. (author), Cieslak, K. P. (author), Lavini, C. (author), Stoker, J. (author), Bennink, R. J. (author), van Gulik, T. M. (author), van Vliet, L.J. (author), Runge, J. H. (author), Vos, F.M. (author)
Objectives: To compare Gd-EOB-DTPA dynamic hepatocyte-specific contrast-enhanced MRI (DHCE-MRI) with <sup>99m</sup> Tc-mebrofenin hepatobiliary scintigraphy (HBS) as quantitative liver function tests for the preoperative assessment of patients undergoing liver resection. Methods: Patients undergoing liver surgery and preoperative assessment...
journal article 2019
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Arkesteijn, G.A.M. (author), Poot, D.H.J. (author), Ikram, M.A. (author), Niessen, W.J. (author), van Vliet, L.J. (author), Vernooij, M.W. (author), Vos, F.M. (author)
The goal of this paper is to increase the statistical power of crossing-fiber statistics in voxelwise analyses of diffusion-weighted magnetic resonance imaging (DW-MRI) data. In the proposed framework, a fiber orientation atlas and a model complexity atlas were used to fit the ball-and-sticks model to diffusion-weighted images of subjects in...
journal article 2019
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Zhang, T. (author), Runge, Jurgen H. (author), Lavini, Cristina (author), Stoker, Jaap (author), van Gulik, Thomas (author), Cieslak, Kasia P. (author), van Vliet, L.J. (author), Vos, F.M. (author)
Purpose Pharmacokinetic models facilitate assessment of properties of the micro-vascularization based on DCE-MRI data. However, accurate pharmacokinetic modeling in the liver is challenging since it has two vascular inputs and it is subject to large deformation and displacement due to respiration. Methods We propose an improved...
journal article 2019
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Zhang, T. (author), Wu, Z. (author), Runge, Jurgen H. (author), Lavini, Cristina (author), Stoker, Jaap (author), Van Gulik, Thomas (author), Cieslak, Kasia P. (author), van Vliet, L.J. (author), Vos, F.M. (author)
The Couinaud classification of hepatic anatomy partitions the liver into eight functionally independent segments. Detection and segmentation of the hepatic vein (HV), portal vein (PV) and inferior vena cava (IVC) plays an important role in the subsequent delineation of the liver segments. To facilitate pharmacokinetic modeling of the liver...
conference paper 2018
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Puylaert, Carl A.J. (author), Schüffler, Peter J. (author), Naziroglu, R.E. (author), Tielbeek, Jeroen A.W. (author), Li, Z. (author), Makanyanga, Jesica C. (author), Tutein Nolthenius, Charlotte J. (author), Nio, C. Yung (author), Pendsé, Douglas A. (author), Menys, Alex (author), Ponsioen, Cyriel Y. (author), Atkinson, David (author), Forbes, Alastair (author), Buhmann, Joachim M. (author), Fuchs, Thomas J. (author), Hatzakis, Haralambos (author), van Vliet, L.J. (author), Stoker, Jaap (author), Taylor, Stuart A. (author), Vos, F.M. (author)
Rationale and Objectives: The objective of this study was to develop and validate a predictive magnetic resonance imaging (MRI) activity score for ileocolonic Crohn disease activity based on both subjective and semiautomatic MRI features. Materials and Methods: An MRI activity score (the “virtual gastrointestinal tract [VIGOR]” score) was...
journal article 2018
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Li, Z. (author), van Vliet, L.J. (author), Stoker, Jaap (author), Vos, F.M. (author)
Purpose: To develop a method for intra-patient registration of pre- and post-contrast abdominal MR images with large local deformations and large intensity variations. Method: A hybrid method is proposed to deal with this problem. It consists of two coupled techniques: (1) descriptor matching (DM) at the original resolution using a discrete...
journal article 2018
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van Schie, J.J.N. (author), Lavini, Cristina (author), van Vliet, L.J. (author), Kramer, Gem (author), Pieters - van den Bos, Indra (author), Marcus, H.J.J. (author), Stoker, Jaap (author), Vos, F.M. (author)
Background: Pharmacokinetic (PK) models can describe microvascular density and integrity. An essential component of PK models is the arterial input function (AIF) representing the time-dependent concentration of contrast agent (CA) in the blood plasma supplied to a tissue. Purpose/Hypothesis: To evaluate a novel method for subject-specific...
journal article 2018
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Filatova, O.G. (author), van Vliet, L.J. (author), Schouten, A.C. (author), Kwakkel, Gert (author), van der Helm, F.C.T. (author), Vos, F.M. (author)
Better insight into white matter (WM) alterations after stroke onset could help to understand the underlying recovery mechanisms and improve future interventions. MR diffusion imaging enables to assess such changes. Our goal was to investigate the relation of WM diffusion characteristics derived from diffusion models of increasing complexity...
journal article 2018
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Arkesteijn, G.A.M. (author), Poot, D.H.J. (author), Niestijl, M. (author), Vernooij, Meike W. (author), Niessen, W.J. (author), van Vliet, L.J. (author), Vos, F.M. (author)
Purpose: To increase the sensitivity in longitudinal analysis of DW-MRI data with the ball-and-sticks model.
conference paper 2017
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Naziroglu, R.E. (author), van Ravesteijn, V.F. (author), van Vliet, L.J. (author), Streekstra, G.J. (author), Vos, F.M. (author)
Purpose: <br/>Simulating low-­dose Computed Tomography (CT) facilitates in-­silico studies into the required dose for a diagnostic task. Conventionally, low-­‐dose CT images are created by adding noise to the projection data. However, in practice the raw data is often simply not available. This paper presents a new method for simulating patient-...
journal article 2017
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Zhang, T. (author), Li, Z. (author), Runge, Jurgen H. (author), Lavini, Cristina (author), Stoker, Jaap (author), Van Gulik, Thomas (author), van Vliet, L.J. (author), Vos, F.M. (author)
In Dynamic Contrast-Enhanced MRI (DCE-MRI) of the liver, a series of images is acquired over a period of 20 minutes. Due to the patient's breathing, the liver is subject to a substantial displacement between acquisitions. Furthermore, due to its location in the abdomen, the liver also undergoes marked deformation. The large deformations...
conference paper 2016
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Yang, J. (author), Poot, D.H.J. (author), Caan, Matthan WA (author), Su, Tanja (author), Majoie, Charles BLM (author), van Vliet, L.J. (author), Vos, F.M. (author)
Purpose<br/>This paper presents and studies a framework for reliable modeling of diffusion MRI using a data-acquisition adaptive prior.<br/><br/>Methods<br/>Automated relevance determination estimates the mean of the posterior distribution of a rank-2 dual tensor model exploiting Jeffreys prior (JARD). This data-acquisition prior is based on the...
journal article 2016
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