Patient with a bone defect revealed by CT and positive results of radionuclide cisternography and CT cisternography. Patient with a bone defect revealed.

Slides:

Advertisements

Similar presentations

Bilateral cavitary plaques.

Advertisements

23-year-old man with a left-sided temporal arachnoid cyst, suffering from occasional headaches. 23-year-old man with a left-sided temporal arachnoid cyst,

123I/Tc-99m sestamibi subtraction scan (top left); neck sonogram in region of cystic mass (top right); axial arterial phase CT scan (bottom left); and.

Otolaryngology referred this patient for imaging after palpating a mass in the “left parotid tail.” Axial contrast-enhanced CT scan through the mass reveals.

Case 1. Case 1. CT scans in an 8-year-old boy with an ectopic tooth in the left nasal cavity.A, Coronal scan obtained with a bone window setting of 600-HU.

A, CT scan showing disk herniation in the posterolateral part of the L4-L5 disk.B, Transforaminal periradicular infiltration at the L5–S1 level, demonstrating.

Axial contrast-enhanced CT scan of the neck demonstrates a hypoattenuated poorly circumscribed right peritonsillar/parapharyngeal masslike lesion, with.

Axial contrast-enhanced CT scan demonstrates normal jugulodigastric lymph nodes bilaterally (curved arrows), which should not be confused with lesions.

Normal progression of interbody fusion in a 28-year-old woman.

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.

A, Postvertebroplasty CT scan demonstrates large cement leaks into the spinal canal, neural foramin (black arrow), and perispinus region. A, Postvertebroplasty.

Contrast-enhanced coronal CT scan of a rabbit.

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

Coronal CT scan of the paranasal sinuses shows a moderate-sized left concha bullosa with moderate deviation of the nasal septum convexity to the right.

Evolution of imaging for internal auditory canal CPA cistern masses.

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.

Venous diverticulum in a 69-year-old man with long-standing right-sided pulsatile tinnitus. Venous diverticulum in a 69-year-old man with long-standing.

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.

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.

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.

High resolution bone algorithm CT scans.

A and B, Axial and coronal high-resolution CT images of the larynx in a 73-year-old patient with papillary thyroid cancer and left vocal cord paralysis.

Postmyelography CTs showing (A) bilateral cervicothoracic CSF leaks without an associated meningeal diverticulum; B, Left thoracic meningeal diverticulum.

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.

Series of axial CT scans

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

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.

Coronal T1-weighted postcontrast MR image in a 42-year-old woman with enhancing polyps in the left lateral wall of the nasopharynx and sphenoid sinus and.

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.

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.

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.

CT scans obtained 2 months later

Fig 1. Unenhanced axial T1-weighted MR image (728/15/2 [TR/TE/excitations]; matrix, 256 × 512; section thickness, 4 mm) shows an abnormally thickened second.

Endoscopic perioperative management

A,B. A,B. Contrast-enhanced CT scan of the neck demonstrates extensive soft tissue edema. At the level of the vocal cords, there is a linear attenuation.

Schematic drawing (A) showing the normal appearance (a) of the malleus head (mh) and incus body (ib) and the abnormal fused dysplastic malleus-incus complex,

PCT imaging with ICA reference of a patient with right tongue base squamous cell carcinoma. PCT imaging with ICA reference of a patient with right tongue.

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.

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 58-year-old woman with positional headaches and tinnitus.

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

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.

Orbital amyloidoma in a 32-year old woman with a slowly increasing mass in the right orbit and generalized bone pain. Orbital amyloidoma in a 32-year old.

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, Coronal enhanced MR image of an IAC meningioma demonstrates intense enhancement of the intralabyrinthine structures (curved white arrow). A, Coronal.

CT images of a patient with inverted papilloma

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 16-year-old boy with juvenile angiofibroma.

Dynamic contrast-enhancement curves for patients with SLE (blue) and healthy controls (red) according to the brain regions sampled. Dynamic contrast-enhancement.

32-year-old man with a recurrent episode of left-sided neck infection.

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

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

CT findings of a middle ear mass.

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.

A–C, Thin-section (1-mm) coronal and axial CT images of the skull base obtained with an edge-enhancing bone algorithm show enlargement (arrows) of the.

A, Axial T2-weighted image from a routine high-resolution 3T screening study to evaluate internal auditory canal lesions shows the right CNIII entering.

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, Coronal sinus CT examination performed on a 27-year-old woman with symptoms of chronic sinusitis demonstrates prominent sinonasal mucosal thickening.

First-pass contrast-enhanced MRA can clearly demonstrate the early venous filling and thereby confirm the presence of a shunt in equivocal cases. First-pass.

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

58 year-old man referred for SNHL and vertigo 2 days after stapedectomy with a reparative intravestibular granuloma, confirmed by surgery. 58 year-old.

Coronal reformatted image from noncontrast sinus CT demonstrates the measurements of NSD. The midline is defined by a dashed line extending from the crista.

A 16-year-old boy with rhabdomyosarcoma.

CT scan of a 27-year-old man with clinical suspicion of dural sinus thrombosis.Lateral (A), anteroposterior (B), caudocranial (C), and oblique sagittal.

A, Contrast-enhanced axial CT scan at the level of the thyroid gland shows a small air pocket within the left lobe of the thyroid gland (black arrow),

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:

Patient with a bone defect revealed by CT and positive results of radionuclide cisternography and CT cisternography. Patient with a bone defect revealed by CT and positive results of radionuclide cisternography and CT cisternography. A, Coronal CT scan of the face shows a defect (arrow) of the lateral sphenoidal sinus roof with mucosal thickening filling the sphenoidal sinus.B, Coronal contrast-enhanced CT cisternogram shows contrast medium extending through the defect (arrow) and within the right sphenoidal sinus (curved arrow). The nasal pledgets indicated a leak in the region of the right sphenoethmoidal recess, although the cisternogram did not show abnormal accumulation of the radionuclide. The defect and CSF leak were confirmed at surgery. Jeffrey A. Stone et al. AJNR Am J Neuroradiol 1999;20:706-712 ©1999 by American Society of Neuroradiology