Fifteen-year-old girl with transient motor weakness of upper and lower left extremities.A and B, FLAIR images (10000/126/2, TI = 2200) show extensive areas.

Slides:

Advertisements

Similar presentations

Images of a 51-year-old woman (patient 8) with generalized tonicoclonic status epilepticus. Images of a 51-year-old woman (patient 8) with generalized.

Advertisements

Axial T1-weighted image after contrast administration (A) and a FLAIR image (B) demonstrating a left parietal subcortical DVA with deep venous drainage.

A 21-year-old man with recurrent left S1 sciatica and radiculopathy by electromyography. A 21-year-old man with recurrent left S1 sciatica and radiculopathy.

Axial MR images in a 51-year-old woman with parkinsonism.

Herpes encephalitis type 2 in a 2-week-old girl

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.

Technical implementation of VW-MR imaging.

Patient 2: CNS vasculitis in a 37-year-old woman with systemic lupus erythematosus. Patient 2: CNS vasculitis in a 37-year-old woman with systemic lupus.

Contrast-enhanced coronal CT scan of a rabbit.

Images at the level of the basal ganglia and sylvian fissure in a patient with hyperintensity on FLAIR images.A, Contrast-enhanced FLAIR image shows increased.

A, Diffusion-weighted image at the level of the deep gray nuclei in a 29-week-old fetus is free of motion artifact.B, Corresponding apparent diffusion.

Unilateral AFP and transient urinary retention in 18-month-old girl with lumbosacral radiculomyelitis. Unilateral AFP and transient urinary retention in.

Patient 3: Hemorrhage in CNS vasculitis.

Diffusion-weighted (TR = 3900, TE = 94, B = 1000, number of gradient directions = 90) imaging (A) with corresponding apparent diffusion coefficient map.

A 37-year-old man with right frontal low-grade astrocytoma.

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)

63-year-old patient with right hemiparesis.

Axial view MR images of the head, obtained at the time of second presentation.A, T1-weighted MR image (400/15) shows thickening of the dura overlying the.

Early MR imaging study at the age of 4 months in a patient with autopsy-proved infantile Alexander disease. Early MR imaging study at the age of 4 months.

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 45-year-old woman with a history of alcohol abuse had changes in consciousness and ocular abnormalities.A, No signal intensity alterations are seen on.

Coronal FLAIR images (A–C) document decreasing left hippocampal mass effect and signal intensity over 5-year period (black arrowhead). Coronal FLAIR images.

Axial T2-weighted images of a 43-year-old RRMS patient show prominent perivascular spaces (short arrows), which project radially and are aligned with lesions,

Patient 6: 24-year-old woman with primary angiitis of the CNS

Axial MR image (TR/TE, 10,002/142) obtained when the patient was aged 5 days shows extensive areas of abnormal signal intensity, which suggest edema involving.

A–I, Matching T1-weighted, T2-weighted, and FLAIR images from three patients ages 5 weeks (A–C), 8 months (D–F), and 3 years (G–I). A–I, Matching T1-weighted,

Involvement of the frontal and parietal lobes in patients with isolated cortical hyperintensities. Involvement of the frontal and parietal lobes in patients.

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

False-negative fast FLAIR for demyelinating disease.

Images in a 49-year-old women with leptomeningeal carcinomatosis from adenocarcinoma of the lung. Images in a 49-year-old women with leptomeningeal carcinomatosis.

Images from first session with a head-neck coil show return of flow in the left internal carotid artery within minutes. Images from first session with.

Coronal (A) and axial (B) contrast-enhanced T1-weighted MR images and an axial DWI (C) and ADC map (D) in a patient with primary dural B-cell lymphoma.

A, FLAIR demonstrating acute infarct within a superficial distribution

A 21-year-old woman presented with hyperemesis gravidarum, changes in consciousness, and ocular abnormalities.A, Sagittal T2-weighted image (4447/100/4.

73-year-old man with left hemiparesis.

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.

Midline (A) and parasagittal (B) non-contrast-enhanced T1-weighted MR images (500/11/1) in a 73-year-old healthy woman show the normal high signal intensity.

A 42-year-old man with bifalcine meningioma

Patient 4: 71 year-old woman with primary angiitis of the CNS

Signal characteristics of PML

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

1, Axial T2 image in patient 1 demonstrates bilateral cystic spaces in the biparietal periventricular white matter. 2, Axial T2 image in patient 2 demonstrating.

A 5-year-old boy with parietal anaplastic ependymoma.

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.

63-year-old woman with right hemiparesis and aphasia.

Axial T2 (A) and axial T2 FLAIR (B) images show periventricular white matter hyperintensities (arrows), prominent Virchow-Robin spaces (arrowheads), ventriculomegaly,

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.

T1-weighted image obtained 2 months after exposure to carbon monoxide (A) shows slightly high-signal-intensity lesions in the bilateral substantia nigra.

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.

A 71-year-old woman who underwent imaging 7 hours after onset of right hemiparesis and aphasia. A 71-year-old woman who underwent imaging 7 hours after.

Axial T2-weighted MR image shows normal flow void in the right internal jugular vein (arrows), whereas flow-related enhancement can be seen in the left.

ADC and astrocytoma grade.

A, Axial T1- weighted MR image shows a predominantly isointense lesion in the right parietal bone. A, Axial T1- weighted MR image shows a predominantly.

Brain MR imaging 2 hours after onset of symptoms

Conventional MR image findings in acute-stage ANE in 2-year-old-girl.

A, T2-weighted coronal image shows a soft-tissue mass of intermediate signal intensity in the left posterior nasal cavity.B, Postcontrast T1-weighted axial.

A–C, Axial T2-weighted images 7 days after the ictus, demonstrating punctate hyperintensities throughout the white matter, on a background of slightly.

Axial DWIs at the level of the corona radiata obtained at 2 different time points (A and B) show recurrent periventricular infarcts. Axial DWIs at the.

A 19-year-old man with a nonenhancing WHO grade III anaplastic astrocytoma. A 19-year-old man with a nonenhancing WHO grade III anaplastic astrocytoma.

Comprehensive imaging of a patient with recent stroke depicting left MCA stenosis. Comprehensive imaging of a patient with recent stroke depicting left.

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.

Radiation plexopathy. Radiation plexopathy. A 67-year-old woman with a history of left breast carcinoma and radiation treatment 20 years ago who presented.

Images from the case of a 54-year-old woman with serologically proved West Nile virus encephalitis. Images from the case of a 54-year-old woman with serologically.

Isolated restricted diffusion in a patient who recovered without residual symptoms.A, DW image shows asymmetric (right greater than left) high signal intensity.

Images in a 50-year-old man with empyema and chronic meningitis.

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

Chronic CNS-IRIS without coinfection.

A 21-year-old woman with a right sensory-motor deficit and aphasia for 60 minutes. A 21-year-old woman with a right sensory-motor deficit and aphasia for.

Presentation transcript:

Fifteen-year-old girl with transient motor weakness of upper and lower left extremities.A and B, FLAIR images (10000/126/2, TI = 2200) show extensive areas of increased signal intensity in leptomeninges and perivascular spaces, predominantly in right hemisp... Fifteen-year-old girl with transient motor weakness of upper and lower left extremities.A and B, FLAIR images (10000/126/2, TI = 2200) show extensive areas of increased signal intensity in leptomeninges and perivascular spaces, predominantly in right hemisphere.C and D, Contrast-enhanced T1-weighted images (333/14/2, no use of flow compensation) show diffuse leptomeningeal enhancement and strong enhancement of perforating arteries in basal ganglias and deep white matter. Areas of left PCA and some areas of left MCA are spared leptomeningeal enhancement. Masayuki Maeda, and Chika Tsuchida AJNR Am J Neuroradiol 1999;20:1836-1838 ©1999 by American Society of Neuroradiology