Coronal catheter angiographic projection (A) and multiplanar reformatted MR angiogram of the early phase (B) and late phase (C) in a 55-year-old male patient.

Slides:

Advertisements

Similar presentations

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

Advertisements

Comparison of magnetic resonance with computed tomography angiography for preoperative localization of the Adamkiewicz artery in thoracoabdominal aortic.

Magnetic resonance angiography of collateral blood supply to spinal cord in thoracic and thoracoabdominal aortic aneurysm patients Walter H. Backes,

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,

Coronal gadolinium-enhanced T1-weighted image (TR/TE/NEX, 500/15/2) at the level of the foramen rotundum demonstrates an enhancing V2 branch on the right.

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

Images from the case of a 62-year-old man with malignant lymphoma

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.

VW-MR imaging to differentiate among causes of intracranial arterial stenosis when angiography findings are inconclusive. VW-MR imaging to differentiate.

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.

Case 1: Hypoplasia of the left ICA

Perimedullary SAVM in a 43-year-old female patient visualized by MR and catheter angiography: the problem of separating arteries from veins by MR angiography.

Magnetic resonance angiography and neuromonitoring to assess spinal cord blood supply in thoracic and thoracoabdominal aortic aneurysm surgery Robbert.

A 40-year-old man who presented with left-sided pulsatile tinnitus.

Right ECA angiogram in the lateral view shows the petrous branch of the MMA (black arrows) and the stylomastoid branch (white arrows) arising from the.

Intramuscular course and entrapment of the C5 nerve root.

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.

A, Coronal 3-mm-slab MIP from CTA in patient 3 with a right transverse sinus DAVF, predominantly supplied by right occipital, middle meningeal, and marginal.

Comparison of contrast-enhanced MR angiography of spinal cord vessels with use of gadopentetate dimeglumine (Magnevist; A, B, and C) and the blood pool.

Coronal gadolinium-enhanced T1-weighted image (TR/TE/NEX, 500/15/2) at the level of the foramen ovale shows a significantly enhancing V3 branch (arrow)

Coronal gadolinium-enhanced T1-weighted image (TR/TE/NEX, 500/15/2) illustrates the normal appearance of V3 as it exits the skull base through the foramen.

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.

Schematic representation of the temporal signal intensity changes of arteries and veins due to the bolus injection of an MR contrast agent and the sampling.

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

Aberrant course of the ICA in a 25-year-old man presenting with pulsatile tinnitus. Aberrant course of the ICA in a 25-year-old man presenting with pulsatile.

Comparison of MR angiography with catheter angiography in a patient with a SDAVF. A, Sagittally oriented T2-weighted image displaying the signal intensity.

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

Venous infarction in a patient with epidural and paraspinal abscesses.

Sphenopetrosal sinus in a patient with a petroclival meningioma

A and B, Venous phase of a conventional intra-arterial catheter angiogram clearly shows flow within the nondominant transverse sinus (A, arrow), whereas.

Patient 6: 24-year-old woman with primary angiitis of the CNS

A, Axial MRA maximum intensity projection (MIP) (TR, 34; TE, 4) shows signal intensity within the left cavernous sinus, petrosal sinus, and transverse.

Infraconal spinal cord AVM (case 1)

Case 3.A, Axial trace diffusion-weighted image (5700/138 [TR/TE], b = 1000 s/mm2) obtained 24 hours after the onset of symptoms shows bilateral thalamic.

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.

A 48-year-old woman presenting with headache and seizure.

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.

A, Contrast-enhanced axial CT scan shows lipomatous regions with thick septa (white arrow), a low-attenuation high-water-content component (black arrow),

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.

A 52-year-old man with 2 median anteroposterior transmedullary venous anastomoses and a combined centrodorsolateral and median anteroposterior TMVA. A,

Anteroposterior (A and C) and lateral (B and C) images from a left internal carotid artery angiogram obtained during the early (A and B) and delayed angiographic.

Patient 4: 71 year-old woman with primary angiitis of the CNS

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.

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.

Left ICA angiogram in anteroposterior (A) and lateral (B) views demonstrates the anastomosis between the mandibular artery arising from the petrous ICA.

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.

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

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.

Type 2. Type 2. White matter abnormalities, especially around the trigones. FLAIR image of a 4-year-old patient (case 22) (A) with an ATRX mutation of.

External carotid angiogram, lateral view, with midarterial (A) and capillary (B) phase, shows the rich vascularity of the tumor. External carotid angiogram,

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.

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.

A 64-year-old man with a right descending thoracic vertebral artery.

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.

Multiplanar reformation of a 3D MR angiography image set of the spinal cord demonstrating the visualization of the AKA (arrow) and the ASA (arrowhead;

A, T1-weighted axial MR image shows a large metastasis (asterisk) involving the C2 vertebral body and extending into the surrounding soft tissues. A, T1-weighted.

A, Anteroposterior (top row), lateral (second row), and axial (bottom row) projections of maximum-intensity 4D-CE-MRA images (2.9/1.4, 20° flip angle)

A, Axial T2-weighted image (3500/90/2) shows a well-defined deep right occipital white matter lesion (asterisk) and a subcortical linear hyperintensity.

The Merci retriever. The Merci retriever. A, Baseline angiogram demonstrates complete occlusion of the right ICA terminus (black arrow). B, Posttreatment.

A 41-year-old man with apparent thrombosis of the entire right internal jugular vein (IJV). A 41-year-old man with apparent thrombosis of the entire right.

Contrast-enhanced axial CT scan through the larynx with soft-tissue reconstruction demonstrates complete ossification of the thyroid (white arrow) and.

Various venous phases of digital subtraction angiography using selective internal carotid artery injections in three patients with no confirmed cerebrovascular.

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.

Seventy-six-year-old man with acute venous thrombosis involving left parietal cortical vein (thrombus age approximately 1 day). Seventy-six-year-old man.

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.

Axial contrast-enhanced CT (A) and sagittal contrast-enhanced reformatted (B) images reveal a well-defined ovoid mass with homogeneous intense enhancement.

Presentation transcript:

Coronal catheter angiographic projection (A) and multiplanar reformatted MR angiogram of the early phase (B) and late phase (C) in a 55-year-old male patient with a SDAVF. On the catheter angiogram (A) the supplying segmental artery (large arrow), the AKA (... Coronal catheter angiographic projection (A) and multiplanar reformatted MR angiogram of the early phase (B) and late phase (C) in a 55-year-old male patient with a SDAVF. On the catheter angiogram (A) the supplying segmental artery (large arrow), the AKA (white arrow) and the ASA (white arrowhead) are depicted. The MR angiogram of the early phase (B) shows the supplying segmental artery (large white arrow) and the AKA (white arrow). Regarding the anterior midline enhancement in the first phase (B) above and below the connection of the AKA with the ASA (white arrowheads), this is most probable enhancement of the spatially unresolved combination of the ASA and the AMV (black arrowheads). The second-phase MR angiogram (C) shows diminished signal intensity of the AKA (white arrow), in contrast with the anterior midline enhancement, which is clearly increased compared with the first phase (B) due to increased venous enhancement. The midline enhancement seen in the second phase (C) is most likely a combination of AMV (black arrowheads) and ASA (white arrowheads) enhancement. Note that there is enhancement of the venous plexus (*) in the late phase (C), which is not seen on the first phase MR angiogram (B). The cephalad enhancement above the connection of the AKA with the ASA is only depicted on the MR images (B and C) and not on the catheter angiogram (A). W.H. Backes, and R.J. Nijenhuis AJNR Am J Neuroradiol 2008;29:619-631 ©2008 by American Society of Neuroradiology