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PT  - JOURNAL ARTICLE
AU  - Chaudhry, U.S.
AU  - De Bruin, D.E.
AU  - Policeni, B.A.
TI  - Susceptibility-Weighted MR Imaging: A Better Technique in the Detection of Capillary Telangiectasia Compared with T2* Gradient-Echo
AID  - 10.3174/ajnr.A4082
DP  - 2014 Dec 01
TA  - American Journal of Neuroradiology
PG  - 2302--2305
VI  - 35
IP  - 12
4099  - http://www.ajnr.org/content/35/12/2302.short
4100  - http://www.ajnr.org/content/35/12/2302.full
SO  - Am. J. Neuroradiol.2014 Dec 01; 35
AB  - BACKGROUND AND PURPOSE: Enhancing lesions on brain MR imaging can present a diagnostic quandary as both benign lesions such as brain capillary telangiectasia and pathologic lesions such as demyelination may appear similar. Stagnation of blood in low-flow venous channels of brain capillary telangiectasias results in susceptibility effect secondary to the increased local deoxyhemoglobin. Both T2* gradient-echo imaging and SWI were demonstrated as valuable in the diagnosis of brain capillary telangiectasia. Because SWI is more sensitive to susceptibility changes than gradient-echo, we aim to demonstrate increased diagnostic value of SWI compared with gradient-echo in making the diagnosis of brain capillary telangiectasia. MATERIALS AND METHODS: We retrospectively reviewed the MR images of 17 patients with a presumed diagnosis of brain capillary telangiectasia and who were examined from June 2010 to September 2012. All patients underwent MR imaging at 1.5T with T1, T2, FLAIR, gradient-echo, SWI, and gadolinium-enhanced T1 sequences. Lesions were evaluated for the presence or absence of signal abnormality on each particular sequence. RESULTS: All 17 brain capillary telangiectasias demonstrated distinct signal-intensity loss on SWI compared with 7 of 17 (41%) who showed signal-intensity loss on gradient-echo. The increased frequency of detection using SWI versus gradient-echo is statistically significant (z = 2.85, P &amp;lt; .01; χ2 = 8.10, P &amp;lt; .01). Six of the lesions showed signal-intensity changes on T1 and/or T2 whereas the remaining lesions were isointense to normal brain. CONCLUSIONS: Brain capillary telangiectasias are more conspicuous on SWI than gradient-echo imaging and other precontrast MR imaging. SWI is a valuable tool in diagnosing these benign lesions and should serve to increase diagnostic confidence. BCTbrain capillary telangiectasiaGREgradient-echo