MR images of patient 1.Pre- (A) and postcontrast (B) T1-weighted images reveal a homogeneously hypointense (compared with the pons) mass located in the.

Slides:

Advertisements

Similar presentations

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.

Advertisements

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.

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

MR images in different patients with SIFs

Patient 4. Patient 4. A 39-year-old woman had a solid nonfunctioning pituitary adenoma without cyst or hematoma. She had no past or present headache. A,

Two coronal views of the same case, demonstrating the aggressive appearing imaging features of mastoid segment FNSs. The left coronal T1-weighted postcontrast-enhanced.

The case of a 64-year-old man with histologically confirmed pituitary adenoma without evidence of hemorrhage or infarction.A, Coronal spin-echo T1-weighted.

Brain and spine MR imaging of a 48-year-old woman with Zika virus infection and encephalitis and myelitis. Brain and spine MR imaging of a 48-year-old.

MR images demonstrating a large left middle cranial fossa mass.

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.

Dural and intracranial extension of mass.

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.

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.

T2-weighted images of a patient with an infarction within the anterior MCA branch territory on day 5 (patient 15) show high SI changes within the ipsilateral.

A and B, Axial (A) and coronal postcontrast (B) T1-weighted MR images from a patient with SS show diffuse pachymeningeal enhancement similar to that reported.

Normal apical ligament (arrow) and normal anterior atlantoaxial ligament (arrowhead) in the diagram (A) and the midsagittal T2-weighted MR image (B) in.

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.

Patient 4, with right hemispheric PMG

A, Axial T1-weighted (700/17/1) MR image shows mild asymmetry of the lower basis pontis and middle cerebellar peduncle on the left. A, Axial T1-weighted.

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

Case 6. Case 6. Images of the brain of a 14-year-old boy with a 4-year history of seizures and left hemiparesis. A, Precontrast CT scan shows an extensive.

Mass was believed to represent a submandibular space or gland tumor by the referring general surgeon, who initially planned to excise the mass. Mass was.

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.

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.

Ill-defined margins as a sign of malignancy.

Four more examples of missed additional aneurysms on DSA

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.

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

Contrast-enhancing lesions on CT scans (A–D) in 4 patients with AIDS-related PCNSL. Note irregularly enhancing lesions in the right parietal lobe (A),

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.

High-resolution MR imaging, CTA, and sonography of the left carotid artery of a 77-year-old man. High-resolution MR imaging, CTA, and sonography of the.

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

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.

Images illustrate the contour and thresholding technique

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

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

Multiple microbleeds in CAA

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

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 T1-weighted MR image of the pituitary gland in a preterm neonate (born at gestational week 28) obtained near term (corrected age of 39 weeks;

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

Sagittal midline T1-weighted (A) and coronal fluid-attenuated (B) inversion recovery (C) images demonstrate evidence of progressive cerebellar atrophy.

Comparison of sagittal images.

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.

Case 7: 45-year-old man with sudden onset of vertigo, dysmetria, and somnolence. Case 7: 45-year-old man with sudden onset of vertigo, dysmetria, and somnolence.

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

The classic CT and MR imaging appearance of an astroblastoma in a 5-year-old female patient (patient 4).A, Axial non-contrast-enhanced CT scan shows the.

A 32-year-old male patient with relapsing-remitting MS with several lesions, including 2 contrast-enhancing juxta-/intracortical lesions in the left frontal.

Coronal T2-weighted images showing the STN in a patient with advanced PD (spin-echo acquisition; TR/TE/NEX, 2200 ms/90 ms/2). Coronal T2-weighted images.

Axial T2-weighted image (A) demonstrates focal cortical dysplasia (arrow) centered in the left anterior temporal lobe in a right-handed patient. Axial.

Epidermoid. Epidermoid. A, Axial postcontrast T1-weighted image shows a large mass (E) inside the right the Meckel cave. The mass does not enhance and.

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, Postcontrast T1-weighted MR image of the brain during metastatic work-up demonstrates no metastatic disease. A, Postcontrast T1-weighted MR image of.

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.

Fat-suppressed T1-weighted MR images of four adult male dwarfs show the pituitary area affected by a mutation in the GHRH receptor. Fat-suppressed T1-weighted.

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.

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

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.

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.

Metastatic adenocarcinoma.

Axial DWIs at the level of the corona radiata obtained at 2 different time points (A and B) show recurrent periventricular infarcts. Axial DWIs at the.

MR images show capsular and cortical lesions (panels 6 and 7); schematic distributions of the lesions are presented. MR images show capsular and cortical.

Patient sample 2. Patient sample 2. MR imaging of a 33-year-old woman (patient 9) with post-LP syndrome before (A and C) and on follow-up after successful.

Cavernoma/telangiectasia.

33-year-old African-American woman with right-sided visual loss, panhypopituitarism, polydipsia, and polyuria (with normal ADH). 33-year-old African-American.

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

Presentation transcript:

MR images of patient 1.Pre- (A) and postcontrast (B) T1-weighted images reveal a homogeneously hypointense (compared with the pons) mass located in the middle portion of the pituitary gland with no enhancement of the lesion; these findings suggest a diagnos... MR images of patient 1.Pre- (A) and postcontrast (B) T1-weighted images reveal a homogeneously hypointense (compared with the pons) mass located in the middle portion of the pituitary gland with no enhancement of the lesion; these findings suggest a diagnosis of Rathke cleft cyst (5 × 6 mm). A normal anterior lobe was recognized in the parasagittal sections (not shown). Jun-ichi Takanashi et al. AJNR Am J Neuroradiol 2005;26:2144-2147 ©2005 by American Society of Neuroradiology