A, FLAIR demonstrating acute infarct within a superficial distribution

Slides:

Advertisements

Similar presentations

High-signal-intensity lesions on T2-weighted MR images

Advertisements

MR images of cytoarchitectural dysplasia

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.

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

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.

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.

Images of a 60-year-old woman (patient 7) with simple partial status epilepticus sustained for 5 days. Images of a 60-year-old woman (patient 7) with simple.

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.

Corticobasal degeneration (CBD), case 1.

Coronal (A, B) and sagittal (D) sections of MIP reformations of a MDCTA performed on a 4-row-detector system in a 54-year old woman (patient 10) with an.

Serial imaging of a child with a clinical complex of bilateral facial PWS, early-onset severe seizures, and fatally progressive encephalopathy. Serial.

Patient 1, a 15-day-old neonate who presented with encephalopathy

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.

A 50-year-old woman with fever and severe hypertension.

A, 55-year-old woman who underwent superficial parotidectomy 22 years before recurrence. A, 55-year-old woman who underwent superficial parotidectomy 22.

Patient 9. Patient 9. A 31-year-old man with mental status changes and seizure activity.A, T2-weighted axial MR image shows bilateral frontal and right.

A 12-month-old girl with chronic infarction in bilateral middle cerebral artery territories. A 12-month-old girl with chronic infarction in bilateral middle.

MR images of Taylor’s FCD with balloon cells

T2-weighted images of a patient with an infarction within the anterior MCA branch territory on day 5 (patient 15) show high SI changes within the ipsilateral.

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

MR images of Taylor’s FCD without balloon cells

Images of a 20-year-old man who was a passenger in a traffic accident in May 1999; he had not been wearing a seat belt. Images of a 20-year-old man who.

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,

Supratentorial and posterior fossa PML

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.

Type 1 pedicle marrow signal intensity changes associated with degenerative facet disease. Type 1 pedicle marrow signal intensity changes associated with.

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.

Coronal T2 (A) and axial TI FLAIR (B), ADC (C), and T2 (D) MR images of a 21-day-old boy. Coronal T2 (A) and axial TI FLAIR (B), ADC (C), and T2 (D) MR.

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.

Axial T2-weighted MR imaging at the level of the internal auditory canals, demonstrating a large, homogeneous mass filling the right internal auditory.

Axial T2-weighted MR images

A–D, The typical pattern of lesion distribution includes confluent lesions in the external capsule (A: subject B4), the subcortical white matter of the.

T2-weighted (A), FLAIR (B), and isotropic DWI (C) of a unilateral lesion in a patient with an acute or chronic presentation of worsening right-sided weakness.

Cortical vein thrombosis.

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

Signal characteristics of PML

A, On day 9 of illness, MRA of the circle of Willis demonstrates normal caliber of the ICAs, MCAs, ACAs, and vertebrobasilar system. A, On day 9 of illness,

Case 1. Case 1. Axial NCCT demonstrates bilateral subdural collections, slightly hyperattenuating to CSF (white arrows). The collections are hyperintense.

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.

Anti-voltage-gated calcium channel encephalitis.

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 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.

A 34-year-old woman with SLE with APS

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.

Case 7, 75-year-old man with history of squamous cell carcinoma of the larynx status postradiation found to have an enlarging mass in the left parotid.

A 43-year-old male patient with headaches (case 33).

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

Typical disease course of cPML in an HIV-positive patient receiving HAART. Top panel, a set of images at presentation with focal diffusion restriction.

Axial T2-weighted image (A) demonstrates focal cortical dysplasia (arrow) centered in the left anterior temporal lobe in a right-handed patient. Axial.

Sagittal MPRAGE (A) and axial T2-weighted (B) images demonstrate extensive focal cortical dysplasia (arrow) involving most of the visualized left frontal.

A 42-year-old woman who presented with altered mental status and lethargy. A 42-year-old woman who presented with altered mental status and lethargy. FLAIR.

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

A, Axial T2-weighted image (3500/90/2) shows a well-defined deep right occipital white matter lesion (asterisk) and a subcortical linear hyperintensity.

Case 1: Axial DWI through the maxillary sinus level demonstrates high signal intensity within the affected left maxillary sinus (black asterisk) compared.

Typical imaging presentation on FLAIR

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.

T2 shinethrough artifact in DWI

Brain MR imaging 2 hours after onset of symptoms

A, Axial T2-weighted image reveals thickening of the cortical gray matter at the medial aspect of both frontal lobes, compatible with bifrontal cortical.

Case 1, 62-year-old female with 2-year history of firm, painless left parotid mass. Case 1, 62-year-old female with 2-year history of firm, painless left.

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

CNS VZV–IRIS (same patient as in Fig 3).

Chronic CNS-IRIS without coinfection.

Corticobasal degeneration (CBD), case 3.

Marked progression of PML documented by serial MR studies

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:

A, FLAIR demonstrating acute infarct within a superficial distribution. A, FLAIR demonstrating acute infarct within a superficial distribution. There is cortical swelling and hyperintensity and adjacent patchy subcortical involvement within the right MCA territory. Additional punctate signal intensity abnormalities are present within the right external capsule and parietal deep white matter (black arrows). B, T2-weighted axial MR imaging demonstrating bilateral peripheral infarcts with hyperintensity within deep and subcortical white matter best appreciated within the right frontal lobe. Bilateral cortical involvement and left deep white matter involvement are appreciated more easily on FLAIR (not shown). R.I. Aviv et al. AJNR Am J Neuroradiol 2006;27:192-199 ©2006 by American Society of Neuroradiology