A 63-year-old man with left L5 radiculopathy on the electromyographic study, who underwent an operation 12 months ago. A 63-year-old man with left L5 radiculopathy.

Slides:

Advertisements

Similar presentations

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

Advertisements

MR images and plain radiograph of an 82-year-old woman who had compression fractures and osteonecrosis at the L3 vertebral body. MR images and plain radiograph.

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

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 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, Brachial neuritis with long thoracic nerve neuritis.

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 30-year-old woman with Zika virus infection with Guillain-Barré syndrome. A 30-year-old woman with Zika virus infection with Guillain-Barré syndrome.

Case 2. Case 2. A 66-year-old man who received epidural anesthesia and underwent MR imaging 2 days (A and B), 2 months (C and D), and 5 months (E and F)

Acute osteopenic compression fracture of the L1 vertebral body simulating metastasis. Acute osteopenic compression fracture of the L1 vertebral body simulating.

A–D, MR images of an 83-year-old man who was diagnosed with osteonecrosis at the L1 vertebral body. A–D, MR images of an 83-year-old man who was diagnosed.

Deficient cochlear nerve in a 60-year-old patient with a 50-year history of left hearing loss after a motor vehicle accident (patient A10). Deficient cochlear.

A 30-year-old woman with Zika virus infection with Guillain-Barré syndrome. A 30-year-old woman with Zika virus infection with Guillain-Barré syndrome.

66-year-old woman with well-differentiated squamous cell carcinoma of lower gingiva.A, Axial T1-weighted MR image of metastatic submandibular node (arrow)

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

Patient 14. Patient 14. Secondary progressive MS. Axial contrast-enhanced T1-weighted MR image (600/27/1 [TR/TE/excitation]). A, No enhanced lesion can.

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.

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.

A 7-month-old boy with left hemimegalencephaly

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.

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

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.

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.

MR images and plain radiograph of a 73-year-old man who had compression fractures at T12, L1, L3, and L4 vertebral bodies and osteonecrosis at L1 vertebral.

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

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.

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.

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

Localization of spinal cord schistosomiasis.

A, MIP coronal 3D PSIF image showing class II injury to the right IAN with mild increase in caliber (less than 50% of the left) and signal intensity of.

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

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 T1-weighted postcontrast MR image in a 71-year-old man, 11 years after radiation therapy, with a contrast enhancing polyp (arrow) with less enhancing.

Images of a 45-year-old man who had experienced axial-loading injury 4 years before these images were obtained and who experienced the sudden onset of.

Case 1, a 69-year-old woman. Case 1, a 69-year-old woman. MR images of the thoracolumbar spine, obtained 10 hours after sudden-onset severe back pain,

A 49-year-old man with abducens nerve palsy from a partially thrombosed PICA aneurysm projecting into the brain stem. A 49-year-old man with abducens nerve.

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.

Coronal gadolinium-enhanced T1-weighted image (TR/TE/NEX, 500/15/2) illustrates the common appearance of V2 (arrows) within the foramen rotundum as central.

Patient 18 had typical orthostatic headache.

A, Axial high-resolution MR imaging in a 5-month-old girl with clinically suspected right-sided brachial plexus palsy shows avulsion injury of the right.

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 56-year-old man with fever for 1 week.

A 50-year-old woman with nonenhancing WHO grade II diffuse astrocytoma

Contrast enhancement of an annular tear at initial and follow-up imaging.A, Annular tear shows contrast enhancement. Contrast enhancement of an annular.

Coronal postcontrast T1-weighted image of the orbits in patient 1 demonstrates a heterogeneously enhancing ovoid lesion involving the right medial rectus.

Sagittal noncontrast T1WI MR imaging of the cervical, thoracic, and upper lumbar spine demonstrates a circumferential high signal intensity (arrows) in.

Coronal T1-weighted contrast-enhanced MR image obtained in January of 1999 at the onset of right hearing impairment shows increased enhancement of the.

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.

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.

52-year-old African-American man with seizure disorder.

A 67-year-old man with intraorbital, infraorbital nerve, and frontal nerve lesions. A 67-year-old man with intraorbital, infraorbital nerve, and frontal.

Laryngeal amyloidoma in a 27-year-old man with long-standing juvenile rheumatoid arthritis and progressive hoarseness. Laryngeal amyloidoma in a 27-year-old.

42-year-old woman with very subtle imaging findings of optic neuropathy due to cat scratch fever (patient 5, Table 2).A and B, Axial (A) and coronal (B)

Images were obtained 5 weeks after the accident

49-year-old man with a cystic cervicomedullary schwannoma and hydrocephalus who underwent a third ventriculostomy before excision of the tumor.A, Axial.

Sagittal MR images of patient 8 showing thoracolumbar EDC 1 day post-LP. Sagittal MR images of patient 8 showing thoracolumbar EDC 1 day post-LP. A, Noncontrast.

Case 3: 54-year-old woman with Aspergillus osteomyelitis.

A 42-year-old man experienced low-back pain and fever for 5 days.

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.

MR images in a 69-year-old woman with cervical and thoracic back pain.

A, Sagittal fast spin-echo (FSE) T2-weighted image shows a hypointense mass (arrowheads) in the anterior aspect of the spinal canal that extends from C3.

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.

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 38-year-old man with deteriorating vision and persistent vomiting for a week (GAE).A, Contrast-enhanced CT scan of the brain shows an enhancing cortical-based.

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.

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.

KD involving bilateral buccal spaces in a 52-year-old man.

Presentation transcript:

A 63-year-old man with left L5 radiculopathy on the electromyographic study, who underwent an operation 12 months ago. A 63-year-old man with left L5 radiculopathy on the electromyographic study, who underwent an operation 12 months ago. A, Axial T1-weighted MR image before contrast injection shows left central intermediate signal intensity epidural lesion (arrow). B, Axial T1-weighted MR image after contrast injection. Enhancement is noted in the left epidural and intradural L5 nerve root (arrows). Nonenhanced disk protrusion is seen (arrowhead). Nonenhanced sagittal T1-weighted (C) and enhanced sagittal T1-fat suppressed (D) MR images show mildly enhanced intradural nerve root and bright enhancement of epidural nerve root (arrows). Y.S. Lee et al. AJNR Am J Neuroradiol 2009;30:1062-1067 ©2009 by American Society of Neuroradiology