Measurement of gray-white contrast.

Slides:

Advertisements

Similar presentations

Advertisements

Bar graph showing the number of patients with respect to temporary diagnostic relief according to the 5-point patient outcome scale when interviewed 2.

Axial source images of left severe ICA stenosis; small residual lumen with vessel wall plaque and thick calcification on the sides. Axial source images.

A, CT scan shows high-attenuation signals within the sulci of the cerebrum (white arrows), indicating traumatic subarachnoid hemorrhage. A, CT scan shows.

Longitudinal MWF in different brain regions for the vaginal delivery (blue) and cesarean delivery (green) groups in cohort 3. Longitudinal MWF in different.

A, ROIs that were drawn in the flow territories of the anterior cerebral artery (cortex: ROIs 1 and 2, basal ganglia: ROIs 5 and 6) and the middle cerebral.

A 28-year-old man after a motor vehicle collision.

A 22-year-old man with posterior left frontal grade 2 astrocytoma.

A side-by-side comparison of EPVS in a cognitively healthy control versus a patient with aMCI A, A coronal MR brain image of a cognitively healthy control.

Dose values for 45 patient scans with use of the high-quality protocol

A–F, Schematic drawings illustrating subarachnoid hemosiderosis and superficial cortical hemosiderosis. A–F, Schematic drawings illustrating subarachnoid.

Pictorial depiction of the phase-masking process.

Results of the improved processing methodology.

Graphs comparing average absolute change in thyroid gland size (A) and average percentage change in thyroid gland size (B) after XRT by quarter-year increments.

Characteristic histograms obtained in 2 different patients with HNSCC of the base of the tongue. Characteristic histograms obtained in 2 different patients.

DTI fiber tracks reveal the course of the corticospinal tract along the border of a brain tumor (blue). DTI fiber tracks reveal the course of the corticospinal.

Longitudinal changes of the area of the cerebrum (A), corpus callosum (B), midbrain tegmentum (D), pons (E), cerebellar vermis (F), cerebellar hemisphere.

A, Plots showing the signal-intensity behavior as a function of flip angle for gray matter (GM) and white matter (WM) at field strengths 1.5T and 3T. A,

Schematic diagram of the divisions of the sulcus and the types of spatial distribution of abnormal findings on MR imaging. Schematic diagram of the divisions.

Bar graph of the number of averaged activated voxels (normalized to control values), as defined by increases in lactate concentration in the left frontal.

AP (A) and lateral (B) radiographs demonstrating a discontinuous segment of the catheter, with broken catheter ends in the subcutaneous tissue of the lower.

Venous infarction in a patient with epidural and paraspinal abscesses.

Hematoxylin-eosin (A) and luxol fast blue (B) staining of the lesion seen in the cerebellum of case 2. Hematoxylin-eosin (A) and luxol fast blue (B) staining.

TBSS results. TBSS results. A, TBSS-derived t-map of decreased fractional anisotropy in the anoxic brain injury group relative to the neurotypical control.

Time course analysis of the response in V1 to the M and P stimuli for a single subject. Time course analysis of the response in V1 to the M and P stimuli.

Anatomic specimen. Anatomic specimen. Superior surface of the brain after removal of the pia-arachnoid and surface vasculature. Note the positions, alignments,

SWI data in a patient with progressive MS exquisitely demonstrate the location of iron deposition in the deep gray matter. SWI data in a patient with progressive.

T2-weighted, PD-weighted, FLAIR, and DWI images showing cortical abnormalities in the right parietal lobe; FLAIR and DWI also show abnormalities in the.

Variations in the shape of the superior compartment of the FSDP due to variations in the marginating air cells. Variations in the shape of the superior.

Trends in the use of head CT and advanced imaging in patients treated with IV thrombolysis from 2008 to Trends in the use of head CT and advanced.

Typical supratentorial right frontal cPML in an HIV-positive patient.

Contrast-enhancing lesions on CT scans (A–D) in 4 patients with AIDS-related PCNSL. Note irregularly enhancing lesions in the right parietal lobe (A),

Basilar artery diameter measured with CTA in the delayed stage of SAH

Graph of neurologic scores (mean ± SD) for the moderate-severe VSPdelayed group, mild VSPdelayed group, and sham group. Graph of neurologic scores (mean.

3D view of a postoperative MR acquisition in a patient with bilateral implantation of electrodes in the STN for the treatment of advanced PD. Caudate nuclei.

CT scan of the neck shows multiple cervical lymph nodes with ring enhancement, central necrosis, and an abscess with diffuse strong edematous infiltration.

Bar graph shows the preventive effect of UV on the development of vasospasm for different irradiation time periods. Bar graph shows the preventive effect.

High-resolution MR imaging, CTA, and sonography of the left carotid artery of a 77-year-old man. High-resolution MR imaging, CTA, and sonography of the.

A 61-year-old male patient with right hemiparesis imaged at 2

Coronal T1-weighted contrast-enhanced MR image obtained in January of 1999 at the onset of right hearing impairment shows increased enhancement of the.

DTI pattern 1: normal anisotropy, abnormal location or orientation

Dynamic contrast-enhancement curves for patients with SLE (blue) and healthy controls (red) according to the brain regions sampled. Dynamic contrast-enhancement.

The odds ratio comparing phonation to the breath-hold technique is given above the glottis, at the glottis, and below the glottis. The odds ratio comparing.

Axial head CT image across the centrum semiovale before (baseline image) and after (enhanced image) processing with CIE, with equivalent ROIs used to measure.

Multiple regions of interest are used with the FACT algorithm to delineate the corticospinal tract. Multiple regions of interest are used with the FACT.

Conventional MR imaging findings in patients with ALS

Scatter and box plot of midpoint measurement compared with age of subject. Scatter and box plot of midpoint measurement compared with age of subject. The.

The “white gray sign.” Axial high-resolution 3D inversion recovery fast-spoiled gradient-echo T1-weighted image demonstrates decreased gray-white contrast.

Photographic (A) and radiographic (B) representations of the SynchroMed model EL intrathecal baclofen pump depicting the pump rotor (red ring), reservoir.

Typical images of a patient without brain metastases derived via automatic segmentation software. Typical images of a patient without brain metastases.

Representative quantitative maps of a patient with brain metastasis.

Intergroup comparisons of fractional anisotropy values using TBSS

Scintigraphic image obtained 48 hours after injection of 1-mCi 111In DTPA into the medication reservoir reveals nonpatency of the catheter system with.

Region-of-interest technique for perfusion determination.

Bar graph illustrating the rate of leak detection by CTM and MRM

Imaging plane for arterial spin labeling method.

Number of white streaks for the cobalt-containing alloy (upper, black lines) and titanium clips (lower, white lines) scanned in high mode (H) (open symbols,

Graph showing significant correlation of MFC in the thalamus and number of lesions in patients with relapsing-remitting MS. This trend indicates the role.

Patient 1. Patient 1. Follow-up brain CT scan after 7 days in patient 1, who continued to deteriorate neurologically despite therapeutic measures. Repeat.

Scatterplots displaying the relationship between FA and age (A).

Pseudoaneurysms demonstrated by femoral arteriography and sonography.

A left centrum semiovale lesion in a 30-year-old woman with relapsing-remitting MS; the time lapse between 3T and 7T scans was 6 months. A left centrum.

MR imaging−based modalities in neuroimaging research discussed in this review. MR imaging−based modalities in neuroimaging research discussed in this review.

Boxplots of diffusion (A and B) and perfusion (C) characteristics in brain metastases (gray), glioblastomas (white), and PCLs (dotted). Boxplots of diffusion.

Patient 16: gestational-week fetus.

MR images show capsular and cortical lesions (panels 6 and 7); schematic distributions of the lesions are presented. MR images show capsular and cortical.

Graph of the contrast ratio between scar and recurrent disk fragment as a function of time after injection of 0.1 mmol/kg ionic (M) and nonionic (O) contrast.

Left, T1 spin-echo image at 1

Same section position with spin-echo T1-weighted sequences at 1

Two cases with Sylvian fissure SAH

Presentation transcript:

Measurement of gray-white contrast. Measurement of gray-white contrast. A, Cortical segmentations were drawn along both sides of the central sulcus (royal blue and yellow) as well as along the adjacent banks of the precentral and postcentral sulci (red and pink) and the intervening WM (green and light blue). B, Gray-white contrast (± standard deviation bars) along the central sulcus was significantly (P < .001) decreased both anteriorly and posteriorly compared with the contrast along the pre- and postcentral sulci, respectively. O.F. Kaneko et al. AJNR Am J Neuroradiol 2017;38:276-280 ©2017 by American Society of Neuroradiology