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beskrivning och utvärdering av diffusions mr - Örebro universitet
Aim: To assess intravoxel incoherent motion diffusion-weighted imaging (IVIM-DWI) for monitoring early efficacy of chemotherapy in a human gastric cancer mouse model. Methods: IVIM-DWI was performed with 12 b-values (0-800 s/mm(2)) in 25 human gastric cancer-bearing nude mice at baseline (day 0), and then they were randomly divided into control and 1-, 3-, 5- and 7-d treatment groups (n = 5 per group). Intravoxel Incoherent Motion Diffusion-Weighted Imaging of Prostate Cancer In this study, detailed diffusion measurements of normal prostate tissues, BPH, and prostate cancer using multiple b values have been made. Biexponential fits were applied to the diffusion decay curves to calculate the molecular diffusion Intravoxel incoherent motion (IVIM) imaging is a concept and a method initially introduced and developed by Le Bihan et al. to quantitatively assess all the microscopic translational motions that could contribute to the signal acquired with diffusion MRI. 2018-01-25 · Objective To evaluate intravoxel incoherent motion (IVIM) diffusion-weighted imaging (DWI) and dynamic contrast-enhanced (DCE) magnetic resonance imaging (MRI) sequences for quantitative characterization of anal fistula activity. Methods This retrospective study was approved by the institutional review board. One hundred and two patients underwent MRI for clinical suspicion of anal fistula To compare the diagnostic performance of diffusion kurtosis imaging (DKI), intravoxel incoherent motion (IVIM), and monoexponential diffusion-weighted imaging (DWI) to detect clinically significant fibrosis (≥ F2). 2018-10-01 · Intravoxel incoherent motion diffusion-weighted imaging as an adjunct to dynamic contrast-enhanced MRI to improve accuracy of the differential diagnosis of benign and malignant breast lesions Intravoxel incoherent motion (IVIM) imaging enables the separate assessment of perfusion- and diffusion-related parameters, of which perfusion-related parameters may be helpful for differentiating pancreatic adenocarcinomas (PACs) from normal pancreas, chronic pancreatitis, and neuroendocrine tumors (NETs) (all P < .05).
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1 Currently, DWI based on single-shot EPI is most commonly used for IVIM imaging. 2,3 However, EPI-DWI is associated Intravoxel incoherent motion diffusion-weighted MR imaging in differentiation of lung cancer from obstructive lung consolidation: comparison and correlation with pharmacokinetic analysis from dynamic contrast-enhanced MR imaging. Eur Radiol 2014; 24: 1914 – 22 doi: 10.1007/s00330-014-3176-z pmid: 24788038 As both intravoxel incoherent motion (IVIM) modeling and dynamic contrast‐enhanced magnetic resonance imaging (DCE‐MRI) provide perfusion parameters, IVIM‐derived perfusion parameters might be expected to correlate with the kinetic features from DCE‐MRI. Purpose Lei Ding, Lianxiang Xiao, Xiangtao Lin, Chunmei Xiong, Lingbo Lin, Shijun Chen, " Intravoxel Incoherent Motion (IVIM) Diffusion-Weighted Imaging (DWI) in Patients with Liver Dysfunction of Chronic Viral Hepatitis: Segmental Heterogeneity and Relationship with Child-Turcotte-Pugh Class at 3 Tesla ", Gastroenterology Research and Practice,. vol. 2018, Article ID 2983725, 12 pages, 2018. https Intravoxel incoherent motion (IVIM) diffusion-weighted imaging was performed using 12 b values: 0, 10, 20, 30, 40, 50, 80, 100, 200, 400, 800, and 1000 sec/mm2.
Intravoxel incoherent motion (IVIM) imaging is a concept and a method initially introduced and developed by Le Bihan et al.
MRI Clinics of North America, an Issue of Magnetic Resonance
En utökad DWI-teknik, Intravoxel incoherent motion (IVIM), har därför utvecklats för att mäta både diffusion och perfusion. För IVIM finns ett stort Intravoxel Incoherent Motion (IVIM) Imaging at Different Magnetic Field Strengths: Spatial analysis of diffusion tensor tractography statistics along the inferior Diffusion tensor MRI post mortem demonstrated cerebral white matter in intravoxel incoherent motion MR imaging compared with CBV and Diffusion-weighted imaging (DWI) of the head and neck represents a distinct method of MR imaging with far-ranging applications. Research DWI-obtained ADC values are able to look beyond the anatomy in Intravoxel incoherent motion. Cord; Intracranial Abnormalities with Diffusion Restriction; Brain Anatomy by Diffusion-weighted Imaging; Measuring Perfusion: Intravoxel Incoherent Motion; Implementing the Intra Voxel Incoherent Motion (IVIM) model to analyze diffusion and perfusion in MRI. Developed a Python module for IVIM analysis in Dipy, 1508 dagar, Intravoxel Incoherent Motion in Normal Pituitary Gland: Initial Study with Turbo Spin-Echo Diffusion-Weighted Imaging [HEAD & NECK].
Intravoxel Incoherent Motion Diffusion for Identification of
Download citation. Received: 02 April 2020. Accepted: 08 July 2020.
(9), simultaneously assesses both the diffusion and perfusion parameters of tumors by fitting the diffusion-weighted signal intensity of multiple b-value images with a bi-exponential model without the need of contrast media (10). Recently, several
Moreover, diffusion-weighted imaging (DWI) is another magnetic resonance modality that is able to objectively and quantitatively assess perfusion and diffusion to aid detection of malignancies. 7 –10 DWI can provide additional information to identify focal pancreatic lesions, verifying more restricted diffusion in solid malignant tumors versus benign inflammatory ones. 11 –14 However, the
Assessment of renal artery stenosis using intravoxel incoherent motion diffusion-weighted magnetic resonance imaging analysis Behzad Ebrahimi, Naveen Rihal, John R. Woollard, James D. Krier, Alfonso Eirin , Lilach O. Lerman
Objective:To investigate the relationship between intravoxel incoherent motion ( IVIM) diffusion-weighted MRI (DW MRI) parameters and 18F-fluodeoxyglucose
DWI (diffusion-weighted imaging) is a functional magnetic resonance imaging In recent years, intravoxel incoherent motion (IVIM) has been widely used in a
Gliomas grading is important for treatment plan; we aimed to investigate the application of intravoxel incoherent motion (IVIM) diffusion-weighted imaging ( DWI)
Intravoxel incoherent motion (IVIM) refers to translational movements which within a given voxel and during the measurement time present a distribution of speeds
24 Aug 2020 The diagnostic performance of intravoxel incoherent motion diffusion-weighted imaging (IVIM-DWI) in the differential diagnosis of pulmonary
13 Sep 2019 A total of 50 patients, including 37 patients with PDAC and 13 patients with high‑ grade pNENs, underwent pancreatic multiple b‑values DWI with
Denis Le Bihan, father of modern diffusion imaging, coined the term intravoxel incoherent motion (IVIM) in the 1980s to refer to the microscopic translation of
6 Aug 2020 ADC: Apparent diffusion coefficient; IVIM: Intravoxel incoherent motion; MRI: Magnetic resonance imaging.
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Biexponential fits were applied to the diffusion decay curves to calculate the molecular diffusion OBJECTIVE. The purpose of this study is to investigate whether the intravoxel incoherent motion (IVIM) diffusion-weighted imaging (DWI) parameters are different between prostate cancer, benign prostatic hyperplasia (BPH), and healthy peripheral zone (PZ). To investigate the diagnostic value of intravoxel incoherent motion (IVIM) diffusion-weighted imaging (DWI) for discriminating axillary metastatic from non-metastatic lymph nodes (LNs) in rabbit models.
Pre-operative MRI from 275 patients with unilateral breast cancer was analyzed. The apparent diffusion coefficient (ADC) and IVIM parameters [tissue diffusion coefficient (D t), perfusion fraction (f p) and pseudodiffusion coefficient] were obtained from cancer and normal tissue using diffusion-weighted imaging with b-values of 0, 30, 70, 100, 150, 200, 300, 400, 500 and 800 s mm −2.
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Kim Y(1), Ko K(1), Kim D(1), Min C(2), Kim SG(3), Joo J(4), Park B(4). Author information: (1)1 Department of Radiology, National Cancer Center, Goyang, Republic of Korea. Intravoxel Incoherent Motion Diffusion-Weighted Imaging of Prostate Cancer In this study, detailed diffusion measurements of normal prostate tissues, BPH, and prostate cancer using multiple b values have been made.
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2013; 55: 21 Oct 2017 Guest:Denis Le Bihan, MD, PhD, Neurospin, Gif-sur-Yvette, France and Department of Radiology, Kyoto University Graduate School of MATERIALS AND METHODS: Forty-nine patients with gliomas and 17 with acute strokes underwent 3T MRI, including DWI with 16 b-values (range, 0–900 s/mm2) In response to the COVID-19 pandemic, the University Imaging Centers have The Sofie G8 PET/CT high-performance benchtop PET/CT imaging system offers is highly automated with all hardware motor movement, imaging parameters, and .. IMV imaging's blog.