A, ROIs that were drawn in the flow territories of the anterior cerebral artery (cortex: ROIs 1 and 2, basal ganglia: ROIs 5 and 6) and the middle cerebral.

Slides:



Advertisements
Similar presentations
Xe-CT CBF maps in a patient with Moyamoya disease.
Advertisements

Right carotid angiogram (A) demonstrates a small carotid cave aneurysm in a patient who had an anterior communicating artery aneurysm previously treated.
Axial MR images in a 51-year-old woman with parkinsonism.
Axial CT scans of the brain and neck performed with contrast medium.
Fetus 3.A, Parasagittal transvaginal sonogram of the fetal brain at 22 weeks’ gestation shows abnormal periventricular echogenicity with cystic formation.
Two angiographically occult additional microaneurysms adjacent to a ruptured posterior inferior cerebellar artery aneurysm in a 53-year-old woman. Two.
A, Measurement of the angle between the TS-OP line and the hard palate in the lateral scout view of the brain CT (black arrow). A, Measurement of the angle.
Case 1: 15-year-old boy with juvenile nasopharyngeal angiofibroma on the right side. Case 1: 15-year-old boy with juvenile nasopharyngeal angiofibroma.
Contrast-enhanced coronal CT scan of a rabbit.
Workflow of the 2 presented analysis approaches: the reference Weisskoff method and the alternative tissue residue function–based method. Workflow of the.
Patient 3: Hemorrhage in CNS vasculitis.
Examples of leukoencephalopathy grading.
Diffusion-weighted (TR = 3900, TE = 94, B = 1000, number of gradient directions = 90) imaging (A) with corresponding apparent diffusion coefficient map.
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.
FLAIR scan, FA map, and fiber tracking in a 38-year-old patient with TBI who was imaged 2 weeks after the initial trauma. FLAIR scan, FA map, and fiber.
Axial CT images at the level of the middle cerebellar peduncles show blood clot within the fourth ventricle. Axial CT images at the level of the middle.
Comparison of conventional (A) and KRISP (B) FLAIR images (8142/135/1; TI = 2250) at the level of the pons. Comparison of conventional (A) and KRISP (B)
Axial CT images at the basal ganglia level show subarachnoid hemorrhage on the right and a chronic lacunar infarct on the left. Axial CT images at the.
Early MR imaging study at the age of 4 months in a patient with autopsy-proved infantile Alexander disease. Early MR imaging study at the age of 4 months.
Box-and-whisker plot of attenuation measurements with DE and SECT
RCVS. RCVS. A, Axial brain CT scan shows bilateral frontoparietal sulcal SAH (white arrowheads). B, Axial FLAIR image confirms the cSAH (white arrowheads).
Images from first session with a head coil show suspicion of carotid dissection. Images from first session with a head coil show suspicion of carotid dissection.
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.
An acute stroke patient with severe stenosis of the left internal carotid artery. An acute stroke patient with severe stenosis of the left internal carotid.
Hypervascular tumor. Hypervascular tumor. Right carotid artery angiogram shows displacement of the branches of the middle cerebral artery. The tumor blush.
AP (A) and lateral (B) radiographs demonstrating a discontinuous segment of the catheter, with broken catheter ends in the subcutaneous tissue of the lower.
A 76-year-old man presenting with acute right-sided symptoms.
A and B, Venous phase of a conventional intra-arterial catheter angiogram clearly shows flow within the nondominant transverse sinus (A, arrow), whereas.
Axial MR image (TR/TE, 10,002/142) obtained when the patient was aged 5 days shows extensive areas of abnormal signal intensity, which suggest edema involving.
MR images of patient 2 (with juvenile-onset DRPLA).
A 65-year-old man with an unruptured anterior communicating artery aneurysm. A 65-year-old man with an unruptured anterior communicating artery aneurysm.
MR imaging from a 33-year-old woman who had experienced classical migraine with aura since her teens, but was otherwise asymptomatic It shows how marked.
Pial vasodilation. Pial vasodilation. A, Axial GRE T2 image shows a left frontal sulcal SAH (black arrowhead), possibly located in the “watershed” territory.
Four more examples of missed additional aneurysms on DSA
Representative multislice MIP projections of EPVS in the subcortical brain structures and the basal ganglia of a control and a subject with aMCI. Representative.
T2-weighted (A), FLAIR (B), and isotropic DWI (C) of a unilateral lesion in a patient with an acute or chronic presentation of worsening right-sided weakness.
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),
Basilar artery diameter measured with CTA in the delayed stage of SAH
A 46-year-old woman with a coiled ruptured basilar tip aneurysm and an additional large fusiform middle cerebral artery aneurysm. A 46-year-old woman with.
Flow through an 8F long sheath (Shuttle Select), an 8F balloon-catheter (FlowGate2 Balloon Guide Catheter), an ACE 64 distal aspiration catheter, and an.
A 61-year-old woman with a calcified cerebral embolus to the left posterior cerebral artery.A, Axial 2.5-mm image from noncontrast brain CT shows a calcified.
Follow-up prenatal MR imaging at 36 weeks’ gestation.
Examples and prevalence of circle of Willis anomalies that hamper collateral function. Examples and prevalence of circle of Willis anomalies that hamper.
1, Axial T2 image in patient 1 demonstrates bilateral cystic spaces in the biparietal periventricular white matter. 2, Axial T2 image in patient 2 demonstrating.
Hyperperfused stroke territory on ASL
Axial images of a 45-year-old woman (A and C) from the STD group (DLP, 1100 mGy×cm) and a 37-year-old man (B and D) from the LD group (DLP, 713 mGy×cm)
Axial head CT image across the centrum semiovale before (baseline image) and after (enhanced image) processing with CIE, with equivalent ROIs used to measure.
External carotid angiogram, lateral view, with midarterial (A) and capillary (B) phase, shows the rich vascularity of the tumor. External carotid angiogram,
Left carotid artery angiograms demonstrate the persistent otic artery (a), the basilar artery (b), the fetal posterior cerebral artery (PCA) (c), the ACoA.
A and B, Anteroposterior (A) and lateral (B) anatomic diagrams demonstrate the anatomy of the PMVs in relation to the vertebrobasilar system. 1 indicates.
Fixed brain. Fixed brain. A, Coronal section shows elevation of the fornices and obstruction of the interventricular foramina of Monro by the colloid cyst.
Multiple regions of interest are used with the FACT algorithm to delineate the corticospinal tract. Multiple regions of interest are used with the FACT.
Comparison of brain temperature values in the basal ganglia and white matter according to the initial degree of encephalopathy and the presence of brain.
T1-weighted image obtained 2 months after exposure to carbon monoxide (A) shows slightly high-signal-intensity lesions in the bilateral substantia nigra.
A 42-year-old woman who presented with altered mental status and lethargy. A 42-year-old woman who presented with altered mental status and lethargy. FLAIR.
Schematic (A) and radiographic measurement (B) of pelvic incidence: an angle between a line drawn perpendicular to the middle of the superior sacral endplate.
Maximal variation of ASPECTS sections with baseline alteration.
A 55-year-old woman (the same patient as in Fig 1) with RCVS complicated by ischemic infarcts. A 55-year-old woman (the same patient as in Fig 1) with.
Region-of-interest technique for perfusion determination.
Imaging plane for arterial spin labeling method.
Number of white streaks for the cobalt-containing alloy (upper, black lines) and titanium clips (lower, white lines) scanned in high mode (H) (open symbols,
Brain stem lesions on MR images and abnormal respiration.
Pseudoaneurysms demonstrated by femoral arteriography and sonography.
Plots of the difference between sonography and MR imaging ventricular measurements against the time interval between sonography and MR imaging. Plots of.
A–C, Axial T2-weighted images 7 days after the ictus, demonstrating punctate hyperintensities throughout the white matter, on a background of slightly.
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.
Flow patterns of 2 vertebral artery fusiform cases with different stent-placement strategies. Flow patterns of 2 vertebral artery fusiform cases with different.
Case 3.A, CT angiography revealing bilateral asymptomatic middle cerebral artery (MCA) bifurcation aneurysms and an additional aneurysm at the left distal.
Serial MR images in a patient receiving hydroxyurea.
A 21-year-old woman with a right sensory-motor deficit and aphasia for 60 minutes. A 21-year-old woman with a right sensory-motor deficit and aphasia for.
Presentation transcript:

A, ROIs that were drawn in the flow territories of the anterior cerebral artery (cortex: ROIs 1 and 2, basal ganglia: ROIs 5 and 6) and the middle cerebral artery (cortex: ROIs 3 and 4, basal ganglia: ROIs 7 and 8). A, ROIs that were drawn in the flow territories of the anterior cerebral artery (cortex: ROIs 1 and 2, basal ganglia: ROIs 5 and 6) and the middle cerebral artery (cortex: ROIs 3 and 4, basal ganglia: ROIs 7 and 8). B, In the periventricular white matter, ROIs were drawn anterior (ROIs 9 and 10) and on either side (ROIs 11 and 12) of the lateral ventricles. C.J.J. van Asch et al. AJNR Am J Neuroradiol 2010;31:67-70 ©2010 by American Society of Neuroradiology