dwi scan  (Philips Healthcare)

Journal: Brain Sciences

Article Title: Brain Markers of Resilience to Psychosis in High-Risk Individuals: A Systematic Review and Label-Based Meta-Analysis of Multimodal MRI Studies

doi: 10.3390/brainsci15030314

Figure Lengend Snippet: Diffusion-MRI studies.

Article Snippet: Kim et al., 2012 [ ] , 22 FHR (FDR $ , 23 yr, 36% M) 15 SCZ (23 yr, 53% M) 26 HC (22 yr, 50% M) , 1.5T Siemens Avanto: DWI scan (TR 5.9 s, TE 96 ms, FOV 23 cm, axial slices of 2 mm, no gap, voxels 1.8 mm 2 × 4 mm, b-value 1000 s/mm 2 , and 12 non-collinear directions) , FSL preprocessing. Callosal boundaries traced with Moore–Neighbor algorithm, CC segmented into 200 equidistance surface points, and FA extracted from each. , FA of each surface point assessed for group effects with ANOVA, using age and sex as covariates and using random permutation with p < 0.01 to control the type 1 error rate. , While SCZ showed the decreased FA of CC splenium and genu (trend), FHR had an increased FA of the genu , which may reflect compensatory WM changes counteracting the influence of the genetic vulnerability to psychosis..

Techniques: Diffusion-based Assay, Software, Transformation Assay, Control, Sequencing, Comparison

Journal: Frontiers in Physiology

Article Title: Intravoxel incoherent motion diffusion-weighted imaging and shear wave elastography for evaluating peritumoral liver fibrosis after transarterial chemoembolization in a VX2 rabbit liver tumor model

doi: 10.3389/fphys.2022.893925

Figure Lengend Snippet: T2-weighted and intravoxel incoherent motion diffusion weighted imaging (IVIM DWI) sequences for rabbit VX2 liver tumors after control or experimental procedure. (A,D) T2-weighted imaging for the control group and experimental group respectively. (B,E) Signal intensity (SI) on IVIM DWI for the control group and experimental group respectively. (C,F) The SI gradually decreases as the b value increases both the control group and experimental group, respectively. The whole tumor was outlined with a dashed white line.

Article Snippet: First, IVIM DWI scans can be affected by respiratory motion.

Techniques: Diffusion-based Assay, Imaging, Control

Journal: Frontiers in Physiology

Article Title: Intravoxel incoherent motion diffusion-weighted imaging and shear wave elastography for evaluating peritumoral liver fibrosis after transarterial chemoembolization in a VX2 rabbit liver tumor model

doi: 10.3389/fphys.2022.893925

Figure Lengend Snippet: Intravoxel incoherent motion diffusion weighted imaging (IVIM DWI) sequences for rabbit VX2 liver tumors after control or experimental procedure. (A–C) The true diffusion coefficient (D), pseudodiffusion coefficient (D*), perfusion fraction (PF) maps in the control group. (D–F) D, D*, and PF maps in the experimental group. The whole tumor was outlined with a dashed white line

Article Snippet: First, IVIM DWI scans can be affected by respiratory motion.

Techniques: Diffusion-based Assay, Imaging, Control

Journal: JOR Spine

Article Title: Patient‐specific apparent diffusion maps used to model nutrient availability in degenerated intervertebral discs

doi: 10.1002/jsp2.1179

Figure Lengend Snippet: Diffusion weighted‐imaging (left) for intervertebral disc #1, level L3L4, unprocessed apparent diffusion coefficient (ADC) map (middle), cropped ADC map (right)

Article Snippet: Series of DWI scans were processed in MATLAB 9.5 to generate ADC maps for the NP using the mid‐sagittal slice (Figure ).

Techniques: Diffusion-based Assay, Imaging