Traumatic neuropathy. Traumatic neuropathy. A, Sagittal oblique plane T1-weighted image (560/10/2), obtained at the level of the piriformis muscle (asterisk),

Slides:

Advertisements

Similar presentations

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.

Advertisements

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,

Acquired cochlear nerve deficiency in a 14-year-old patient with hearing loss after meningococcal meningitis at the age of 6 months (patient A3). Acquired.

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)

Tortuosity of optic nervesA, Axial fast spin-echo T2-weighted image showing factor 1: interruption of the optic nerve out of the axial plane (tip of arrow)

Type 1 pedicle marrow signal intensity changes associated with an early to progressive pars fracture and absence of signal intensity changes in a terminal.

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.

Patient 1. Patient 1. A, An axial T1-weighted postcontrast image with fat saturation (600/13/2 [TR/TE/excitations]) demonstrates asymmetrical enhancement.

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.

Multiple acute nerve root avulsions.

Neurotmesis with suprascapular nerve severance and axillary neuropathy

Stretch injury with suprascapular neuropathy.

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.

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.

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

T2-weighted fast spin-echo MR images

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, Axial fat-saturated T2WI through the orbits of a patient with right MGDA demonstrates a funnel-shaped morphologic pattern of the optic disc (white arrow)

A 75-year-old man with a posterior epidural disk migration

Persistent weakness of right lower limb 2 months after EV71 infection in a 16-month-old infant. Persistent weakness of right lower limb 2 months after.

Sarcoid. Sarcoid. A, Axial T1-weighted spin-echo unenhanced image (600/9/2), obtained through the proximal right thigh, reveals an isointense (to muscle)

MR images obtained through the pituitary gland show diffuse enlargement of the pituitary gland. MR images obtained through the pituitary gland show diffuse.

A, Transverse T2-weighted fast FLAIR images obtained in a patient with liver cirrhosis during an episode of hepatic encephalopathy. A, Transverse T2-weighted.

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

Same patient as shown in figure 3.

Bilateral cochlear nerve absence in a 7-year-old patient with severe dysplasia and bilateral absence of the cochlea (patient C10). Bilateral cochlear nerve.

A 50-year-old man with previous left leg amputation for epitheloid sarcoma presents with multiple bony metastases. A 50-year-old man with previous left.

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.

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.

Optic glioma.A, Sagittal spin-echo image (TR, 643 ms; TE, 12 ms) shows markedly enlarged optic nerve (arrow).B, Axial fast spin-echo (TR, 6000 ms; TE,

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

Benign peripheral nerve sheath tumor of the sciatic nerve shows the typical split fat sign (arrow) on coronal T1 (A), target sign (short arrow) on coronal.

Motor vehicle crash involving 31-year-old man.

A, FLAIR demonstrating acute infarct within a superficial distribution

A, A sagittal fat-saturated T2-weighted image demonstrates increased signal intensity (arrow) in the superior endplate from an acute compression fracture.

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])

Traumatic stump neuroma.

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 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.

Case 1: 49-year-old man with Candida albicans infection.

Follow-up prenatal MR imaging at 36 weeks’ gestation.

Congenital absence of the cochlear nerve with an isolated cochlea.

Hypertrophic neuropathy.

High-resolution T2-weighted fast spin-echo MR images provide excellent depiction of the cisternal and intracanalicular segments of the facial nerve and.

Sequential diffusion-weighted images show bright basal ganglia as the initial finding after anoxia. Sequential diffusion-weighted images show bright basal.

Sagittal T1-weighted MR image of the pituitary gland in a term neonate (born at gestational week 38) obtained near term (corrected age of 39 weeks; 7 days.

Sagittal MR images of the lumbar spine reveal the heterogeneous appearance of the mass indicative of a variety of components. Sagittal MR images of the.

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)

Spondylolysis in an 8-year-old boy.

Case 2. Case 2. A, Axial T1-weighted image (spin-echo: TR/TE, 650/9.3) shows a lobulated mass in the right parotid gland, with a low-signal-intensity well-defined.

Images were obtained 5 weeks after the accident

Images of a 22-month-old male patient with severe left temporal lobe epilepsy that was recognized at age 9 months after bacterial meningitis at age 6 months.A.

Spatial orientation of the thalami.

Compressive neuropathy.

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

Longitudinal T1-weighted spin-echo signal-intensity changes in the DN (A–C) and GP (D–F) in a female patient with MS after receiving 0 (A and D), 1 (B.

Patient 2.A, Axial T1-weighted image (400/14/2) shows a hyperintense mass in the right vestibule (arrow).B, Axial T2-weighted fast spin-echo image (4000/102/4)

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.

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.

Signal intensity time curves of gradient-echo (GRE) and spin-echo (SE) echo-planar imaging sequences. Signal intensity time curves of gradient-echo (GRE)

Globally increased ASL signal intensity due to artifact.

Patient 3 was an 8-week-old female infant with a history of seizures that started 3 days before MR imaging was performed. Patient 3 was an 8-week-old female.

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

Normal sciatic nerve. Normal sciatic nerve. A, Coronal T1-weighted spin-echo image (600/10/2) illustrates the normal longitudinal fascicular appearance.

Tubulo-nodular type. Tubulo-nodular type. Fetal MR images (case 4). A, Mid-sagittal view turbo spin-echo T1-weighted sequence (400/17/1) shows typical.

FIG 4. Plots of the Loes scores, based on double-echo spin-echo MR images, obtained at different follow-up examinations for 22 patients with ALD. The T1-weighted.

A 75-year-old man with a left brachial zoster-associated plexopathy.

MRN appearance of a normal sciatic nerve.

Presentation transcript:

Traumatic neuropathy. Traumatic neuropathy. A, Sagittal oblique plane T1-weighted image (560/10/2), obtained at the level of the piriformis muscle (asterisk), reveals normal size and fascicular morphology of the left sciatic nerve (arrows). The adjacent adnexal cyst (cyst) approximates but does not distort or displace the normal sciatic nerve.B, Sagittal oblique plane fat-saturated T2-weighted fast spin-echo image (4000/108/2; echo train length, 8), obtained at the same level as that shown in A, confirms normal nerve signal intensity (arrows).C, Sagittal oblique plane T1-weighted image (560/10/2), obtained at the level of the obturator internus muscle, reveals flattening of the left sciatic nerve and disruption of the normal transverse fascicular pattern (arrow).D, Sagittal oblique plane fat-saturated T2-weighted fast spin-echo image (4000/108/2; echo train length, 8), obtained at the same level as that shown in C, shows abnormal sciatic nerve hyperintensity (arrow) equivalent to that of regional vessels. Unlike the case illustrated in figure 3, there is no identifiable mechanical compressive cause in this case. Kevin R. Moore et al. AJNR Am J Neuroradiol 2001;22:786-794 ©2001 by American Society of Neuroradiology