HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Abstract Full Text Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Citation Map Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Taoka, T. Articles by Ueda, T. Search for Related Content PubMed PubMed Citation Articles by Taoka, T. Articles by Ueda, T. Social Bookmarking                      What's this? Hotlight (NEW!) What's Hotlight?

Sulcal Hyperintensity on Fluid-Attenuated Inversion Recovery MR Images in Patients Without Apparent Cerebrospinal Fluid Abnormality

¹ Department of Radiology, Magnetic Resonance Imaging Center, University of Iowa College of Medicine, 200 Hawkins Dr., Iowa City, IA 52242.
² Present address: Department of Radiology, Nara Medical University, 840 Shijo, Kashihara, Nara, 634-8522 Japan.

View larger version (128K): [in a new window]   Fig. 1A. —54-year-old woman with large meningioma. Unenhanced fluid-attenuated inversion recovery image (TR/TEeff, 8000/108; inversion time, 2000 msec; echo train length, 8) shows hyperintensity (arrows) in sulcal space of both hemispheres, whereas cerebrospinal fluid in lateral ventricle shows hypointensity.

View larger version (125K): [in a new window]   Fig. 1B. —54-year-old woman with large meningioma. Contrast-enhanced MR image (TR/TE, 500/20) shows some linear enhancement (arrows) along gyri, which suggests leptomeningeal enhancement.

View larger version (133K): [in a new window]   Fig. 2A. —77-year-old man with acute middle cerebral artery stroke (main lesion of infarction is not shown). Unenhanced fluid-attenuated inversion recovery image (TR/TEeff, 8000/108; inversion time, 2000 msec; echo train length, 8) shows hyperintensity (arrow) in sulcal space of left frontal lobe.

View larger version (131K): [in a new window]   Fig. 2B. —77-year-old man with acute middle cerebral artery stroke (main lesion of infarction is not shown). Contrast-enhanced MR image (TR/TE, 500/20) shows linear enhancement (arrow) along surface of gyri, which occupy almost entire sulcal space.

View larger version (137K): [in a new window]   Fig. 2C. —77-year-old man with acute middle cerebral artery stroke (main lesion of infarction is not shown). T2-weighted image (TR/TEeff range, 8000/90-100; echo train length, 8) shows slight hypointensity (arrow) in corresponding sulcus.

View larger version (130K): [in a new window]   Fig. 2D. —77-year-old man with acute middle cerebral artery stroke (main lesion of infarction is not shown). Unenhanced T1-weighted image (TR/TE, 500/20) shows relatively slight hyperintensity (arrow) in corresponding sulcus compared with other sulci.

View larger version (114K): [in a new window]   Fig. 2E. —77-year-old man with acute middle cerebral artery stroke (main lesion of infarction is not shown). Gradient-echo T2*-weighted image (250/15; flip angle, 20°) shows mild hypointensity (arrow) in involved sulci. This is likely caused by focal magnetic inhomogeneity from content (deoxyhemoglobin) of blood pool due to alteration of hemodynamics and suggests venous congestion.

View larger version (151K): [in a new window]   Fig. 3A. —74-year-old woman with sagittal sinus thrombosis. Unenhanced fluid-attenuated inversion recovery image (TR/TEeff, 8000/108; inversion time, 2000 msec; echo train length, 8) shows hyperintensity in superior sagittal sinus due to venous thrombosis. Almost all cortical sulci of both hemispheres show hyperintensity especially in right occipital region (arrows).

View larger version (136K): [in a new window]   Fig. 3B. —74-year-old woman with sagittal sinus thrombosis. Contrast-enhanced MR image (TR/TE, 450/20) shows gyral enhancement in right occipital region (arrows).

View larger version (136K): [in a new window]   Fig. 3C. —74-year-old woman with sagittal sinus thrombosis. T2-weighted image (TR/TEeff, 8000/90; echo train length, 8) shows hyperintensity in superior sagittal sinus (arrows) likely due to venous thrombosis

View larger version (139K): [in a new window]   Fig. 3D. —74-year-old woman with sagittal sinus thrombosis. Unenhanced T1-weighted image (TR/TE, 450/20) shows relative hyperintensity in corresponding cortical sulci (arrows) compared with that shown in lateral ventricles.

View larger version (160K): [in a new window]   Fig. 4A. —34-year-old man with dural arteriovenous fistula. Unenhanced fluid-attenuated inversion recovery (FLAIR) image (TR/TEeff, 8000/108; inversion time, 2000 msec; echo train length, 8) before treatment shows slight sulcal hyperintensity in right temporal lobe (arrow).

View larger version (151K): [in a new window]   Fig. 4B. —34-year-old man with dural arteriovenous fistula. Contrast-enhanced MR image (TR/TE, 500/20) before treatment shows multiple serpentine hypointense structures in right temporal lobe as compared with contralateral side before embolization, most likely representing high-flow vasculature of arteriovenous shunt.

View larger version (148K): [in a new window]   Fig. 4C. —34-year-old man with dural arteriovenous fistula. Unenhanced FLAIR image (TR/TEeff, 8000/108; inversion time, 2000 msec; echo train length, 8) after treatment shows that sulcal hyperintensity becomes more extensive after embolization (arrows).

View larger version (140K): [in a new window]   Fig. 4D. —34-year-old man with dural arteriovenous fistula. Contrast-enhanced MR image (TR/TE, 500/20) after treatment shows enhanced vessels suggesting slow-flowing blood vessels. Hypointense vessels on contrast-enhanced MR image (B) before treatment become hyperintense with vascular enhancement after embolization (arrows), suggesting alteration of hemodynamics.

CiteULike

Complore

Connotea

Del.icio.us

Digg

Reddit

Technorati