Presentation is loading. Please wait.

Presentation is loading. Please wait.

MR images of bilateral AM with duration of symptoms of 12 days on the left and fewer than 6 days (3–6 days) on the right side. MR images of bilateral AM.

Published byAntony Sherman Modified over 6 years ago

Similar presentations

Presentation on theme: "MR images of bilateral AM with duration of symptoms of 12 days on the left and fewer than 6 days (3–6 days) on the right side. MR images of bilateral AM."— Presentation transcript:

1 MR images of bilateral AM with duration of symptoms of 12 days on the left and fewer than 6 days (3–6 days) on the right side. MR images of bilateral AM with duration of symptoms of 12 days on the left and fewer than 6 days (3–6 days) on the right side. T2 FSE image (A) shows total obliteration of middle ear and mastoid air spaces. SI is comparable with that of brain parenchyma. Especially on the right side, delineation of intramastoid bony septa is no longer detectable. On the left, outer cortical bone is destroyed (arrow) with subperiosteal abscess formation (asterisk). Intramastoid signal decrease, compared with CSF, becomes even more evident in CISS (B). In postgadolinium T1 MPRAGE (E), intense, thick enhancement surrounds the fluid-filled mastoid antra (a) and fills the peripheral mastoid cells. On the left, intense soft-tissue enhancement around the subperiosteal abscess and, on the right, periosteal enhancement surrounding the mastoid are visible. DWI b=1000 (C) and ADC (D) show diffusion restriction in the whole mastoid region bilaterally with foci of markedly elevated SI inside both antra (a) and the left subperiosteal abscess (asterisk). R. Saat et al. AJNR Am J Neuroradiol 2015;36: ©2015 by American Society of Neuroradiology

Download ppt "MR images of bilateral AM with duration of symptoms of 12 days on the left and fewer than 6 days (3–6 days) on the right side. MR images of bilateral AM."

Similar presentations

Incidental detection of recurrent cholesteatoma in a patient being evaluated for an unrelated indication. Incidental detection of recurrent cholesteatoma.

Incidental detection of recurrent cholesteatoma in a patient being evaluated for an unrelated indication. Incidental detection of recurrent cholesteatoma.
Two axial images from the same case of a facial nerve schwannoma involving the right mastoid segment of the facial nerve canal. Two axial images from the.

Two axial images from the same case of a facial nerve schwannoma involving the right mastoid segment of the facial nerve canal. Two axial images from the.
Patient 1. Patient 1. A 40-year-old man with mild ataxia and homonymous hemianopia. CRP level was initially 0.5 mg/dL and did not change in the clinical.

Patient 1. Patient 1. A 40-year-old man with mild ataxia and homonymous hemianopia. CRP level was initially 0.5 mg/dL and did not change in the clinical.
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)

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)
Normal progression of interbody fusion in a 28-year-old woman.

Normal progression of interbody fusion in a 28-year-old woman.
Intraosseous temporal bone meningioma in a 45-year-old woman who presented with left-sided hearing loss and tinnitus. Intraosseous temporal bone meningioma.

Intraosseous temporal bone meningioma in a 45-year-old woman who presented with left-sided hearing loss and tinnitus. Intraosseous temporal bone meningioma.
Image shows appearance of septum within dural sinus in a 68-year-old woman with normal results of an MR imaging examination. Image shows appearance of.

Image shows appearance of septum within dural sinus in a 68-year-old woman with normal results of an MR imaging examination. Image shows appearance of.
Two coronal views of the same case, demonstrating the aggressive appearing imaging features of mastoid segment FNSs. The left coronal T1-weighted postcontrast-enhanced.

Two coronal views of the same case, demonstrating the aggressive appearing imaging features of mastoid segment FNSs. The left coronal T1-weighted postcontrast-enhanced.
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.
A, Axial source image from a contrast-enhanced MRA unambiguously demonstrates a tiny (

A, Axial source image from a contrast-enhanced MRA unambiguously demonstrates a tiny (
Detection of recurrent cholesteatoma when physical examination is obscured and CT is indeterminate. Detection of recurrent cholesteatoma when physical.

Detection of recurrent cholesteatoma when physical examination is obscured and CT is indeterminate. Detection of recurrent cholesteatoma when physical.
Typical MR images of the L2 vertebral body metastasis with pathologic fractures reveal a sharply defined lytic lesion. Typical MR images of the L2 vertebral.

Typical MR images of the L2 vertebral body metastasis with pathologic fractures reveal a sharply defined lytic lesion. Typical MR images of the L2 vertebral.
Case 5. Case 5. Organized hematoma of the maxillary sinus in a 50-year-old man. A, Precontrast axial CT scan with bone algorithm shows a large, expansile.

Case 5. Case 5. Organized hematoma of the maxillary sinus in a 50-year-old man. A, Precontrast axial CT scan with bone algorithm shows a large, expansile.
An 11-year-old girl with left-face sensitivity and left-temple pain.

An 11-year-old girl with left-face sensitivity and left-temple pain.
A 33-year-old woman with spinal CSF leak syndrome and multiple CSF leaks in the bilateral thoracic and lumbar spine. A 33-year-old woman with spinal CSF.

A 33-year-old woman with spinal CSF leak syndrome and multiple CSF leaks in the bilateral thoracic and lumbar spine. A 33-year-old woman with spinal CSF.
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.

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.
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.
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.

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.

Similar presentations

Ads by Google