False-negative fast FLAIR for demyelinating disease.

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Axial T1-weighted image after contrast administration (A) and a FLAIR image (B) demonstrating a left parietal subcortical DVA with deep venous drainage.
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A 20-year-old man with HD. A, Neutral axial gradient-echo image at the C5 level demonstrates subtle bilateral LOA along the lateral aspects of the lamina.
A and B, Sagittal (A) and axial (B) fast spin-echo images of the cervical spine before treatment demonstrate diffuse increase in signal intensity (arrows)
MR images in different patients with SIFs
A–C, Case 1. A–C, Case 1. Typical white matter changes involving the corpus callosum and the pyramidal tracts (A and C, arrows), dilation of the lateral.
NPH on T2-weighted fast spin-echo, axial images.
A 7-month-old boy with left hemimegalencephaly
Comparison of conventional (A) and KRISP (B) FLAIR images (8142/135/1; TI = 2250) at the level of the pons. Comparison of conventional (A) and KRISP (B)
42-year-old male patient with follow-up neck CT for lymphoma at 70 kVp (A) and corresponding previous CT at 120 kVp (B). 42-year-old male patient with.
T2-weighted fast spin-echo MR images
Source dynamic MR image (A), signal intensity time curves (S) (B), and color-coded perfusion map (overlaid on the corresponding FLAIR image) (C) of a male.
A 50-year-old woman with fever and severe hypertension.
Persistent weakness of right lower limb 2 months after EV71 infection in a 16-month-old infant. Persistent weakness of right lower limb 2 months after.
MR images obtained through the pituitary gland show diffuse enlargement of the pituitary gland. MR images obtained through the pituitary gland show diffuse.
Nonenhanced sagittal T1-weighted MR image (500/11/1) in a 37-year-old woman with AIDS and chronic anemia (hemoglobin level, 8.2 mg/dL) shows diffuse abnormal.
MR images of Taylor’s FCD with balloon cells
Off-midline sagittal T1-weighted MR image (600/12/1) in a 63-year-old man with newly diagnosed non-Hodgkin lymphoma shows diffusely abnormal diploic marrow.
Coronal FLAIR images (A–C) document decreasing left hippocampal mass effect and signal intensity over 5-year period (black arrowhead). Coronal FLAIR images.
A, Transverse T2-weighted fast FLAIR images obtained in a patient with liver cirrhosis during an episode of hepatic encephalopathy. A, Transverse T2-weighted.
Images of a 2-year-old female patient (patient 6) with complex partial status epilepticus with secondary generalization. Images of a 2-year-old female.
Another patient with intraspinal abnormalities
Acute thrombosis of the superior sagittal sinus and cortical veins in a 34-year-old woman with 2 days of lasting headaches and left hemiparesis. Acute.
A, Sagittal view through the brain stem and cervical spinal cord shows the extent of T2 hyperintensities involving the pyramidal tract and posterior columns.
Half Fourier schematic.
Diffusion false positive in trauma (PSIF 22/2/10, 75° flip angle) found in a 17-year-old who sustained a flexion injury at C3–4 after going over handlebars.
Involvement of the frontal and parietal lobes in patients with isolated cortical hyperintensities. Involvement of the frontal and parietal lobes in patients.
Optic glioma.A, Sagittal spin-echo image (TR, 643 ms; TE, 12 ms) shows markedly enlarged optic nerve (arrow).B, Axial fast spin-echo (TR, 6000 ms; TE,
T2-weighted, PD-weighted, FLAIR, and DWI images showing cortical abnormalities in the right parietal lobe; FLAIR and DWI also show abnormalities in the.
A, Sagittal SS-FSE T2-weighted image demonstrates a small posterior fossa with displacement of the cerebellar vermis inferiorly, consistent with a Chiari.
Radicular enhancement form in spinal cord schistosomiasis.
A, Baseline MR imaging study (transverse fast FLAIR T2-weighted image) of a 56-year-old patient with hepatitis C cirrhosis without overt hepatic encephalopathy.
A, FLAIR demonstrating acute infarct within a superficial distribution
A, A sagittal fat-saturated T2-weighted image demonstrates increased signal intensity (arrow) in the superior endplate from an acute compression fracture.
Images acquired on hospital day 5 during the early stage of left orbitofrontal cerebritis.A, FLAIR image (8000/105 [TR/TE]; TI, 2500) shows hyperintense.
A, Sagittal SS-FSE T2-weighted image in a 25-gestational-week-old fetus demonstrates agenesis of the corpus callosum as well as a small pons.B, Axial SS-FSE.
Off-midline non-contrast-enhanced sagittal T1-weighted MR image (600/12/1) in a 48-year-old woman with breast cancer who presented with headache and fatigue.
Traumatic stump neuroma.
A–C, Sagittal T1-weighted (A), sagittal T2-weighted (B), and axial T2-weighted (C) MR images of the cervical spine in a patient with severe myelopathy.
A, Diffusion-weighted image (TR, 10 seconds; TE, 94
Sagittal noncontrast T1WI MR imaging of the cervical, thoracic, and upper lumbar spine demonstrates a circumferential high signal intensity (arrows) in.
Patient 1. Patient 1. Axial fluid-attenuated inversion recovery (FLAIR) imaging (A), diffusion-weighted imaging (DWI) (B), and apparent diffusion coefficient.
Follow-up MR imaging examination at day 14
A 47-year-old woman with a history of alcohol abuse presented with ataxia, changes in consciousness, and ocular abnormalities. A 47-year-old woman with.
Bone algorithm CT images from the same case, demonstrating focal enlargement of the right tympanic segment, in the axial (left) and coronal (right) planes.
A–C, Midsagittal cervical lateral T2-weighted image (2200/80/1) (A) and axial T2-weighted image (4000/90/2) through the cervical medullary junction (B)
A, Axial diffusion-weighted image (b = 1000) demonstrates increased signal intensity in the head of the right caudate nucleus (arrow).B, Axial apparent.
A, Sagittal T1-weighted image demonstrates a mildly hypointense well-defined mass arising from the posterior aspect of the tongue abutting the inferior.
Examples for true-positive, false-positive, and false-negative cord signs in the evaluation of sinus thrombosis. Examples for true-positive, false-positive,
Type 2. Type 2. White matter abnormalities, especially around the trigones. FLAIR image of a 4-year-old patient (case 22) (A) with an ATRX mutation of.
Sagittal midline T1-weighted (A) and coronal fluid-attenuated (B) inversion recovery (C) images demonstrate evidence of progressive cerebellar atrophy.
Coronal T2 (A) and axial T1 FLAIR (B), T2 (C), and SWI (D) MR images of a 6-day-old boy. Coronal T2 (A) and axial T1 FLAIR (B), T2 (C), and SWI (D) MR.
LCH−vertebra plana in an 18-month-old boy.
T1-weighted image obtained 2 months after exposure to carbon monoxide (A) shows slightly high-signal-intensity lesions in the bilateral substantia nigra.
MR images of the patient’s head, obtained on hospital day 17, 3 days after renormalization of overcorrected hypernatremia.A, FLAIR image now demonstrates.
A–D, Multiple tiny cortico-subcortical lesions in the right motor region on DWI (approximately 1500/115/18; 2 RR intervals) study (A) confirm the ischemic.
The “white gray sign.” Axial high-resolution 3D inversion recovery fast-spoiled gradient-echo T1-weighted image demonstrates decreased gray-white contrast.
Sagittal SS-FSE T2-weighted image in a 23-gestational-week-old fetus demonstrates multiple bony anomalies in the cervicothoracic region and lumbar spine.
A, Postcontrast T1-weighted MR image of the brain during metastatic work-up demonstrates no metastatic disease. A, Postcontrast T1-weighted MR image of.
ADC and astrocytoma grade.
MR images in a 69-year-old woman with cervical and thoracic back pain.
A, Sagittal fast spin-echo (FSE) T2-weighted image shows a hypointense mass (arrowheads) in the anterior aspect of the spinal canal that extends from C3.
Short-interval follow-up cervical MR imaging of a 67-year-old male ASIA A patient with SCI. T2-weighted FSE images were obtained from an initial MR imaging.
Midline sagittal SS-FSE T2-weighted image demonstrates the normal appearance of the corpus callosum in a 26-gestational-week-old fetus (arrow). Midline.
Persistent diffusion abnormalities in the brain stem of patient 2.
A–C, Axial T2-weighted images 7 days after the ictus, demonstrating punctate hyperintensities throughout the white matter, on a background of slightly.
Case 2: 52 year-old man with intracranial injuries sustained in a motor vehicle accident. Case 2: 52 year-old man with intracranial injuries sustained.
A 75-year-old man with a left brachial zoster-associated plexopathy.
Patient 4, a 72-year-old man presenting with headache, dysphagia, and progressive hoarseness. Patient 4, a 72-year-old man presenting with headache, dysphagia,
Abnormal pedicle marrow signal in a malignant VCF
Isolated restricted diffusion in a patient who recovered without residual symptoms.A, DW image shows asymmetric (right greater than left) high signal intensity.
Presentation transcript:

False-negative fast FLAIR for demyelinating disease. False-negative fast FLAIR for demyelinating disease. A, Sagittal T1-weighted image (500/12/2) demonstrates a markedly enlarged cord with slighted decreased signal centrally.B, Sagittal T2-weighted FSE (4620/112/ 3) shows diffuse increased signal throughout cervical cord.C, Sagittal FSE FLAIR (6000/105/ 2) shows low signal at C7-T1 level, but no abnormal increased signal as on the FSE. Jeffrey S. Ross AJNR Am J Neuroradiol 1999;20:361-373 ©1999 by American Society of Neuroradiology