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KMID : 1103720230840010226
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Journal of the Korean Society of Radiology
2023 Volume.84 No. 1 p.226 ~ p.239
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Comparison of Single- and Multi-Echo Susceptibility- Weighted Imaging in Detecting Cerebral Arteriovenous Shunts: A Preliminary Study
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Han Seung-Wan
Shin Jae-Ho
Ihn Yon-Kwon
Yang Seung-Ho
Sung Jae-Hoon
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Abstract
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Purpose To compare the sensitivities of T2-weighted image (T2WI) and susceptibility-weighted imaging (SWI) in detecting cerebral arteriovenous fistula (AVF), cerebral arteriovenous malformation (AVM), and carotid-cavernous sinus fistula (CCF), and to qualitatively evaluate single-echo SWI (s-SWI) and multi-echo SWI (m-SWI) in characterizing vascular lesions.
Materials and Methods From January 2016 to December 2021, cerebral angiography-proven lesions were recruited. The sensitivities of T2WI and SWI in detecting vascular lesions were compared using McNemar’s test. Qualitative evaluations of s-SWI and m-SWI were categorized to be of poor, average, or good quality and compared using Fisher’s exact test.
Results A total of 24 patients (mean age: 61 years, 12 female, and 12 male) were enrolled. Twenty patients underwent s-SWI or m-SWI, and four patients underwent both. AVF, AVM, and CCF were diagnosed in 10, 11, and 3 patients, respectively. SWI demonstrated higher sensitivity compared to that of T2WI (82.1% vs. 53.6%, p = 0.013). m-SWI showed better image quality compared to that of s-SWI (good quality, 83.3% vs. 25.0%, p = 0.009).
Conclusion SWI demonstrated a higher sensitivity for detecting cerebral arteriovenous shunts compared to that of T2WI. m-SWI exhibited better image quality compared to that of s-SWI in characterizing vascular lesions.
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KEYWORD
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Magnetic Resonance Imaging, Arteriovenous Fistula, Arteriovenous Malformation, Carotid-Cavernous Sinus Fistula, Angiography
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