Detection of recurrent disease and intracranial extension when otologic evaluation is obscured and CT is nonspecific. Detection of recurrent disease and.

Slides:

Advertisements

Similar presentations

Corresponding midsagittal CT (left), MR (middle), and registered (right) images of the cervical spine show proper alignment and the relationship between.

Advertisements

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

A 27-year-old man with recurrent disk herniation confirmed by reoperation. A 27-year-old man with recurrent disk herniation confirmed by reoperation. A,

A 50-year-old man with MD. Axial thin-section CT image shows decreased distance between the vertical limb of the posterior semicircular canal and the posterior.

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.

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.

TOS with C8 neuropathy. TOS with C8 neuropathy. A 17-year-old girl (trumpet player) with left arm and hand weakness in an ulnar distribution, exacerbated.

Comparison of different DWI techniques.

Detection of recurrent cholesteatoma when physical examination is obscured and CT is indeterminate. Detection of recurrent cholesteatoma when physical.

A, Sagittal T2WI MR image demonstrates a typical intraspinal extramedullary arachnoid cyst. A, Sagittal T2WI MR image demonstrates a typical intraspinal.

Types I and II LTS. Axial contrast-enhanced T1-weighted MR image obtained in a 55-year-old man with a type I LTS on the left and a type II LTS on the right.

64-year-old man shows abscess formation in the extraglandular space.

Normal MR imaging findings in a 59-year-old man with right SSHL

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.

Case 2, an 82-year-old man. Case 2, an 82-year-old man. MR images of the cervical spine, obtained 4 hours after a fall, reveal a large SEH in the dorsal.

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.

Type 1 pedicle marrow signal intensity changes and associated soft tissue hyperintensity on T2- and STIR-weighted sequences associated with pars fractures.

Aberrant course of the ICA in a 25-year-old man presenting with pulsatile tinnitus. Aberrant course of the ICA in a 25-year-old man presenting with pulsatile.

Patient 5. Patient 5. Initial axial, half cut, and magnified MR images of a 39-year-old man with spontaneous intracranial hypotension who presented with.

A, In a patient with a history of breast cancer surgery and radiation treatment with right-arm weakness, axial T2WI shows diffuse thickening of the right.

Two different patients with type 3 large CPCs containing tumor.

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.

Bony cochlear nerve canal atresia in a patient with CND

Patient 12. Patient 12. A 43-year-old woman with headache, blurred vision, and mental status change.A, T2-weighted axial MR image shows bilateral centrum.

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

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

EACC with intramural bone fragments.

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, Axial non-enhanced CT scan (soft-tissue algorithm) shows a heterogeneous right temporal bone lesion, with cortical thinning and bone remodeling of the.

Patient 8. Patient 8. A, Follow-up at day 15. MSE is still identified in the thrombosed vein. B, A hyperintense spot is present in the lumen of a cortical.

Trends in the use of head CT and advanced imaging in patients treated with IV thrombolysis from 2008 to Trends in the use of head CT and advanced.

CT scans obtained 2 months later

A–C, DWI scan (A) shows acute infarction involving the left cerebellar hemisphere, which appears iso- to hyperintense on the b0 EPI scan (B). A–C, DWI.

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

A 7-day old neonate, the older sister of patient 1, also presented with neonatal encephalopathy.Axial fast spin-echo T2-weighted image (130/4200/1[TE/TR/NEX])

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.

Off-midline non-contrast-enhanced sagittal T1-weighted MR image (500/11/1 [TR/TE/excitations]) in a 25-year-old healthy man shows the normal appearance.

Case 4: 74-year-old man with sudden left paresthesia.

T2-weighted MR imaging appearance of a healthy 60-year-old woman (A), a 66-year-old woman with idiopathic Parkinson disease (B), and a 16-year-old female.

A 55-year-old woman presenting with left hemiparesis and normal findings on head CT. A, CTP source image shows poor contrast opacification within the right.

Patient 2. Patient 2. A 31-year-old man with fever, seizures, and weakness of the left upper extremity. DW images were superior to conventional MR images.

Temporal bone CT in the Pöschl (A) and Stenvers (B) planes demonstrating a large defect (arrows) in the roof of the right superior semicircular canal.

Inflammatory causes of perilabyrinthine fistula.

Contrast-agent–enhanced T1-weighted MR images (700/15) obtained in a 71-year-old man with skin cancer, who had TMJ tenderness and discomfort in the left.

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, Sagittal T1-weighted image demonstrates a mildly hypointense well-defined mass arising from the posterior aspect of the tongue abutting the inferior.

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.

MR images of the brain (axial sections, fluid-attenuated reversion recovery sequences) show the symmetric hyperintensities (arrows) involving the pyramidal.

Conventional MR imaging findings in patients with ALS

A–C, DWI scan (A) shows acute (hyperintense) infarction in the left frontal region. A–C, DWI scan (A) shows acute (hyperintense) infarction in the left.

Two patients with bone defects on high-resolution CT and normal results of radionuclide cisternography and CT cisternography. Two patients with bone defects.

Magnified view of the axial images of the cervical spine at a comparable level (CT scan, left; MR image, center; registered image, right). Magnified view.

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

Patient 10. Patient 10. A 67-year-old man after radiation therapy at an outside hospital for base-of-tongue cancer. A and B, Axial contrast-enhanced CT.

BOR syndrome. BOR syndrome. A, Axial CT image through the level of the cochlear aperture demonstrates a hypoplastic cochlea without a definable modiolus.

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.

C2 metastasis in a 60-year-old male patient with renal cell carcinoma.

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

Patient 2. Patient 2. Additional MR images.A–C, Follow-up image (A) obtained 15 days after surgical intervention shows reduced size of the abscess cavity.

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.

Persistent diffusion abnormalities in the brain stem of patient 2.

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

Patient 8. Patient 8. Chronologic FLAIR and T1-weighted MR images of a 47-year-old woman with spontaneous intracranial hypotension. She had a 1-week history.

Twelve-year-old girl with coinfection of JE and NCC (patient 5).

A 73-year-old woman with well-differentiated SCCA of the lacrimal sac and nasolacrimal duct. A 73-year-old woman with well-differentiated SCCA of the lacrimal.

Subject 4. Subject 4. Axial CT scan at the level of the common crus (black arrow) shows a large bone defect caused by presumed AG (white arrow), located.

LEC of the right parotid gland in a 38-year-old man with painless masses in the right parotid regions for approximately 3 years. LEC of the right parotid.

Presentation transcript:

Detection of recurrent disease and intracranial extension when otologic evaluation is obscured and CT is nonspecific. Detection of recurrent disease and intracranial extension when otologic evaluation is obscured and CT is nonspecific. A 14-year-old girl with a long history of recurrent cholesteatoma and multiple surgeries. The middle ear is obscured due to a stenotic external auditory canal (A and B). CT shows nonspecific diffuse opacification of the mastoidectomy and middle ear (arrow). C−F, MR imaging shows T2 hyperintense (arrow, C) and T1 hypointense (arrow, D) regions with hyperintensity on BLADE DWI (arrow, E and F) along the superior aspect of the right temporal bone, suspicious for recurrent cholesteatoma with intracranial extension. The patient declined contrast material. At surgery, intradural extension of disease was confirmed. K.M. Schwartz et al. AJNR Am J Neuroradiol 2011;32:430-436 ©2011 by American Society of Neuroradiology