Contrast-enhanced fat-suppressed T1-weighted MR images obtained through the orbits show diffuse homogeneous thickening of the medial, lateral, and inferior.

Slides:

Advertisements

Similar presentations

Color pressure maps (mm Hg) in a healthy subject in the axial (A) and coronal (D) planes as well as for a patient (C and F) with a type IIa DAVF affecting.

Advertisements

Patient 4. Patient 4. Sinonasal carcinoma t(15;19). A, CT scan demonstrates a midline sinonasal tumor (arrow) with lytic bony destruction of the paranasal.

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

Case 1. Case 1. Images in a 51-year-old man with a history of painful maxillary swelling caused by GCG.A, Contrast-enhanced axial CT image demonstrates.

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,

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.

Coronal (A) and axial (B) noncontrast CT scans of the paranasal sinuses show an air cell within the intersinus septum. Coronal (A) and axial (B) noncontrast.

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.

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

A, Axial source image from a contrast-enhanced MRA unambiguously demonstrates a tiny (

Case 2. Case 2. Organized hematoma arising from antrochoanal polyp in a 12-year-old girl. A, Contrast-enhanced axial CT scan shows marked irregular nodular.

Case 1, extranodal orbital involvement in Rosai-Dorfman disease.

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.

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.

Case 1. Case 1. A, Unenhanced axial CT scan through the nasopharyngeal region shows thickening of the nasopharyngeal tissues at the level of the left torus.

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.

Coronal (A) and axial (B) noncontrast CT scans of the paranasal sinuses show an air cell within the intersinus septum. Coronal (A) and axial (B) noncontrast.

Value of a contextual structured template for trigeminal neuralgia over a noncontextual structured template. Value of a contextual structured template.

Contrast-enhanced CT scans show increased enhancement at the right cavernous sinus.A, Contrast-enhanced CT scan obtained in 1994 shows that the right tentorium.

Value of a contextual template for preoperative sinus CT

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.

The case of a 40-year-old man who awoke with severe bilateral retro-orbital pain.A, Axial contrast-enhanced CT scan shows a nonenhancing homogeneous intrasellar.

A, Coronal CT scan of the paranasal sinuses in a 45-year-old women with difficulty breathing shows the typical appearance of crista galli pneumatization.

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

MR images.A, Axial view T2-weighted MR image reveals a low intensity lesion occupying the right mastoid with associated hyperintense debris.B, Axial view.

Patient 6, a 35-year-old man presenting with headache and bilateral deficits of CN III, VI, VII, X, and XII. The patient had been previously treated with.

Case 10. Case 10. Organized hematoma of the maxillary sinus in a 76-year-old woman. A, Precontrast axial CT scan with bone window setting shows a large,

Sarcoma growing into the left maxilla.

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.

Sphenopetrosal sinus in a patient with a petroclival meningioma

Patient 10. Patient 10. A, Coronal high-resolution CT scan, obtained through the sphenoid sinus, shows a defective intersphenoid septum deviated to the.

Coronal (A), axial (B), and right parasagittal (C) CT images in a 58-year-old man show bilateral protrusion of the IOC into the maxillary sinus. Coronal.

Isolated inflammatory scleritis: orbital MR imaging.

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.

Extramedullary hematopoiesis, AROP

Images reveal arachnoid granulations in a 54-year-old man with headaches who had normal results of an MR imaging study.A, Sagittal reconstruction image.

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.

Midline (A) and parasagittal (B) non-contrast-enhanced T1-weighted MR images (500/11/1) in a 73-year-old healthy woman show the normal high signal intensity.

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

Orbital cellulitis related to mucormycosis (A–C) and bacterial infection (D–F). Orbital cellulitis related to mucormycosis (A–C) and bacterial infection.

Selected MR images obtained through the brain and orbits 3. 0 and 2

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

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.

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.

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

A, Axial T2 MR imaging at the level of the hard palate shows an enlarged right lateral retropharyngeal lymph node (asterisk). A, Axial T2 MR imaging at.

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.

CT images of a patient with inverted papilloma

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.

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)

Coronal T2 (A) and axial T1 FLAIR (B), T2 (C), and SWI (D) MR images of a 6-day-old boy. Coronal T2 (A) and axial T1 FLAIR (B), T2 (C), and SWI (D) MR.

Case 1. Case 1. Axial CT image reveals fractures of the lateral and anterior walls of the left maxillary antrum. Herniation of low attenuation fat into.

Axial CT scan shows decalcification of sphenoid bone (arrowheads) adjacent to neurofibroma infiltration of the lateral rectus muscle (arrows) in the absence.

A 61-year-old woman with RCVS

Case 1: Axial DWI through the maxillary sinus level demonstrates high signal intensity within the affected left maxillary sinus (black asterisk) compared.

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, 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, Sagittal T1-weighted, contrast-enhanced, fat-suppressed MR image shows infiltration of the superior extraconal space (small asterisk), superior rectus.

Coronal early phase postcontrast (A), axial early phase postcontrast (B), and axial delayed phase postcontrast (C) images showing an early enhancing 1.3-cm.

A, Axial T2-weighted image reveals thickening of the cortical gray matter at the medial aspect of both frontal lobes, compatible with bifrontal cortical.

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

3T transversal contrast fat-suppressed T1-weighted SE image acquired with the large FOV that covers the entire cranial circumference. 3T transversal contrast.

Case 2. Case 2. A, Coronal unenhanced T1-weighted image through the base of the skull. The left pterygopalatine fossa appears infiltrated by soft tissue.

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

Presentation transcript:

Contrast-enhanced fat-suppressed T1-weighted MR images obtained through the orbits show diffuse homogeneous thickening of the medial, lateral, and inferior rectus muscles of the right orbit. Contrast-enhanced fat-suppressed T1-weighted MR images obtained through the orbits show diffuse homogeneous thickening of the medial, lateral, and inferior rectus muscles of the right orbit. Minimal thickening of the superior muscle group can be seen. The tendinous insertions are not involved. Scattered inflammatory changes in the ethmoid sinuses and the left maxillary sinus can be seen.A, Axial view.B, Coronal view. Girish M. Fatterpekar et al. AJNR Am J Neuroradiol 2002;23:657-659 ©2002 by American Society of Neuroradiology