Results 41 to 50 of about 2,367 (150)

Influence of noise correction on intra- and inter-subject variability of quantitative metrics in diffusion kurtosis imaging. [PDF]

PLoS ONE, 2014
Diffusion kurtosis imaging (DKI) is a promising extension of diffusion tensor imaging, giving new insights into the white matter microstructure and providing new biomarkers. Given the rapidly increasing number of studies, DKI has a potential to establish
Elodie D André, Farida Grinberg, Ezequiel Farrher, Ivan I Maximov, N Jon Shah, Christelle Meyer, Mathieu Jaspar, Vincenzo Muto, Christophe Phillips, Evelyne Balteau   +9 more
doaj   +1 more source

Self‐Supervised Deep Learning Framework for Rician Distribution Based Denoising and Modeling of Multi‐b Prostate Diffusion MRI

Magnetic Resonance in Medicine, Volume 96, Issue 2, Page 928-942, August 2026.
ABSTRACT Purpose Convolutional neural networks (CNNs) are evaluated for improved and accelerated denoising and Rician bias correction in multi‐b DW images with simultaneous signal modeling. Methods Prostate diffusion images from 46 individuals acquired at 20 linearly distributed b‐values (bmax=2000s/mm2) without averaging were used for self‐supervised ...
Mustafa Abbas, Wenyin Zhou, Stephan E. Maier, Fredrik Langkilde, Stefan Kuczera   +4 more
wiley   +1 more source

Whole-lesion histogram analysis of multiple diffusion metrics for differentiating lung cancer from inflammatory lesions

Frontiers in Oncology, 2023
BackgroundWhole-lesion histogram analysis can provide comprehensive assessment of tissues by calculating additional quantitative metrics such as skewness and kurtosis; however, few studies have evaluated its value in the differential diagnosis of lung ...
Jiaxin Li, Baolin Wu, Zhun Huang, Yixiang Zhao, Sen Zhao, Shuaikang Guo, Shufei Xu, Xiaolei Wang, Tiantian Tian, Zhixue Wang, Jun Zhou   +10 more
doaj   +1 more source

Restriction‐Weighted Q‐Space Trajectory Imaging (ResQ): Toward Mapping Diffusion‐Time Effects With Tensor‐Valued Diffusion Encoding in Human Prostate Cancer Xenografts

NMR in Biomedicine, Volume 39, Issue 8, August 2026.
Tensor‐valued diffusion MRI enables microstructure characterization but can be confounded by the presence of restricted diffusion. We introduce ResQ, a framework that incorporates restriction weighting into q‐space trajectory imaging and we evaluate it in a longitudinal study of prostate cancer xenografts treated by external radiotherapy. ResQ revealed
Filip Szczepankiewicz, Malwina Molendowska, Samo Lasič, Marcella E. Safi, Michael Gottschalk, Evangelia Sereti, Anders Bjartell, Linda Knutsson, Oskar Vilhelmsson Timmermand, Crister Ceberg, Joanna Strand   +10 more
wiley   +1 more source

Standard Model Imaging in the Brain and Spinal Cord of MS Patients: Initial Assessment and Comparison to Diffusion Tensor Imaging

NMR in Biomedicine, Volume 39, Issue 8, August 2026.
DTI and SMIfw diffusion models applied in persons with multiple sclerosis revealed region‐specific sensitivity to microstructural injury, but performance differed by anatomical region. SMIfw neurite density fraction demonstrated high sensitivity and reliability in both the brain and spinal cord, whereas DTI measures such as fractional anisotropy and ...
Atlee Witt, Alicia E. Cronin, Bailey Busher, Isabella Stuart, Grace Sweeney, Kristin P. O'Grady, Seth A. Smith, Samantha By, Kurt Schilling   +8 more
wiley   +1 more source

Diffusion kurtosis versus diffusion-weighted magnetic resonance imaging in differentiating clear cell renal cell carcinoma and renal angiomyolipoma with minimal fat: a comparative study

Diagnostic and Interventional Radiology
PURPOSE: To quantitatively compare the diagnostic values of conventional diffusion-weighted imaging and diffusion kurtosis imaging (DKI) in differentiating clear cell renal cell carcinoma (ccRCC) and renal angiomyolipoma with minimal fat (RAMF ...
Yarong Lin, Wenrong Zhu, Qingqiang Zhu
doaj   +1 more source

Diffusion kurtosis imaging of gliomas grades II and III - a study of perilesional tumor infiltration, tumor grades and subtypes at clinical presentation

Radiology and Oncology, 2017
Diffusion kurtosis imaging (DKI) allows for assessment of diffusion influenced by microcellular structures. We analyzed DKI in suspected low-grade gliomas prior to histopathological diagnosis.
Delgado Anna F., Fahlström Markus, Nilsson Markus, Berntsson Shala G., Zetterling Maria, Libard Sylwia, Alafuzoff Irina, van Westen Danielle, Lätt Jimmy, Smits Anja, Larsson Elna-Marie   +10 more
doaj   +1 more source

High‐Resolution Diffusion Kurtosis Imaging of Hippocampus Subfields Across the Healthy Lifespan

NMR in Biomedicine, Volume 39, Issue 8, August 2026.
Developmental and aging changes were examined in the hippocampus using 1 mm isotropic diffusion kurtosis imaging in 363 participants aged 5–90 years. HippUnfold enabled automated subfield segmentation and unfolded hippocampal maps. Whole‐hippocampus showed distinct lifespan trajectories: volume, quadratic; MD, negative Gamma Variate; FA, positive Gamma
Pablo Stack‐Sanchez, Donald W. Gross, Ali R. Khan, Christian Beaulieu   +3 more
wiley   +1 more source

Diffusion kurtosis imaging and conventional diffusion weighted imaging to assess electrochemotherapy response in locally advanced pancreatic cancer

Radiology and Oncology, 2019
The aim of the study was to evaluate diagnostic performance of functional parameters derived by conventional mono-exponential approach of diffusion weighted imaging (DWI) and by diffusion kurtosis imaging (DKI) in the assessment of pancreatic tumours ...
Granata Vincenza, Fusco Roberta, Setola Sergio Venanzio, Palaia Raffaele, Albino Vittorio, Piccirillo Mauro, Grimm Robert, Petrillo Antonella, Izzo Francesco   +8 more
doaj   +1 more source

Diffusion Spectrum Imaging Maps Early Axonal Loss and a Unique Progressive Signal in Neuronal Intranuclear Inclusion Disease

Annals of Clinical and Translational Neurology, Volume 13, Issue 7, Page 1320-1334, July 2026.
ABSTRACT Objective To delineate specific in vivo white matter pathology in neuronal intranuclear inclusion disease (NIID) using diffusion spectrum imaging (DSI) and define its clinical relevance. Methods DSI was performed on 42 NIID patients and 38 matched controls.
Kaiyan Jiang, Yixiu Pei, Xiaobao Hu, Ying Xiong, Fang Wang, Yanyan Yu, Min Zhu, Dandan Tan, Meihong Zhou, Daojun Hong, Fuqing Zhou   +10 more
wiley   +1 more source