Presentation is loading. Please wait.

Presentation is loading. Please wait.

Signal characteristics of PML

Published byYulia Makmur Modified over 5 years ago

Similar presentations

Presentation on theme: "Signal characteristics of PML"— Presentation transcript:

1 Signal characteristics of PML
Signal characteristics of PML.A and B, Axial MR studies show low-signal-intensity lesions on T1-weighted (533/25/1) image (A) and hyperintense lesions on T2-weighted (2000/80/1) image (B) in the centrum semiovale bilaterally, subcortical white matter, and c... Signal characteristics of PML.A and B, Axial MR studies show low-signal-intensity lesions on T1-weighted (533/25/1) image (A) and hyperintense lesions on T2-weighted (2000/80/1) image (B) in the centrum semiovale bilaterally, subcortical white matter, and corpus callosum. Note the asymmetrical white matter involvement, with the left cerebral hemispheric white matter more severely affected. M. Judith Donovan Post et al. AJNR Am J Neuroradiol 1999;20: ©1999 by American Society of Neuroradiology

Download ppt "Signal characteristics of PML"

Similar presentations

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

High-signal-intensity lesions on T2-weighted MR images
MR images of cytoarchitectural dysplasia

MR images of cytoarchitectural dysplasia
Patient 4.A, Axial T2-weighted scan shows a huge extra-axial cyst (white arrows) with septation (black arrow) that displaces the corpus callosum posteriorly.B,

Patient 4.A, Axial T2-weighted scan shows a huge extra-axial cyst (white arrows) with septation (black arrow) that displaces the corpus callosum posteriorly.B,
Axial T1-weighted image after contrast administration (A) and a FLAIR image (B) demonstrating a left parietal subcortical DVA with deep venous drainage.

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.

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.
56-year-old woman with diffuse large B cell lymphoma

56-year-old woman with diffuse large B cell lymphoma
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.

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.
Corticobasal degeneration (CBD), case 1.

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.

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.
A and B, There is asymmetric thickening, T2 hyperintensity, and contrast enhancement of the right BPL compared with that of the left side, better seen.

A and B, There is asymmetric thickening, T2 hyperintensity, and contrast enhancement of the right BPL compared with that of the left side, better seen.
Patient 1, a 15-day-old neonate who presented with encephalopathy

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

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

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.

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.

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

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

MR images of Taylor’s FCD without balloon cells
Sagittal T1-weighted (A) and coronal T2-weighted (B) MR images show the frontoparietal intracalvarial mass lesion that was hypointense on T1-(A) and hyperintense.

Sagittal T1-weighted (A) and coronal T2-weighted (B) MR images show the frontoparietal intracalvarial mass lesion that was hypointense on T1-(A) and hyperintense.
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.

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

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

Similar presentations

Ads by Google