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超高速電圧切り替え方式デュアルエネルギーCTを用いた脳血管内治療後の画像評価 Imaging evaluation after neuroendovascular therapy using fast kV switching dual energy CT チョウコウソク　デンアツ　キリカエ　ホウシキ　デュアル　エネルギー　CT　オ　モチイタ　ノウ　ケッカンナイ　チリョウゴ　ノ　ガゾウ　ヒョウカ 60462470 篠原, 祐樹 シノハラ, ユウキ Shinohara, Yuki 10747637 久家, 圭太 クヤ, ケイタ Kuya, Keita 加藤, 亜結美 カトウ, アユミ 00535304 坂本, 誠 サカモト, マコト Sakamoto, Makoto 小川, 敏英 オガワ, トシヒデ Kato, Ayumi カトウ, アユミ Ogawa, Toshihide オガワ, トシヒデ 注があるものを除き、この著作物は日本国著作権法により保護されています。 / This work is protected under Japanese Copyright Law unless otherwise noted. iodinated contrast media metal artifact fast kV switching dual energy CT virtual monochromatic imaging metal artifact reduction software iodinated contrast media metal artifact fast kV switching dual energy CT virtual monochromatic imaging metal artifact reduction software The efficacy and safety of neuroendovascular therapy is globally recognized due to the positive results of recent randomised control trials on mechanical thrombectomy for acute embolic stroke, on carotid arterial stenting for carotid artery stenosis, on coil embolization for intracranial aneurysm, and on embolization for arteriovenous malformation or dural arteriovenous fistula. In parallel, neuroradiologists frequently encounter difficulties in the interpretation of postinterventional non-contrast enhanced CT images, as they often have high attenuated areas derived from residual iodinated contrast media and metal artifacts caused by metallic devices such as platinum-coils, surgical clips, metallic stents, and liquid embolic agents such as Onyx®. Meanwhile, fast kV switching dual energy CT （gemstone spectral imaging: GSI） is one of the advanced imaging techniques that can overcome these obstacles. For instance, material decomposition using virtual monochromatic imaging （VMI） can generate an iodine map and water （virtual non-contrast） map, which enables residual iodinated contrast media and acute hemorrhage to be distinguished. Furthermore, the use of VMI with metal artifact reduction software, MARS, can suppress severe metal artifacts, resulting in improved image quality of surrounding vessels. In this review article, we demonstrate the utility of GSI after neuroendovascular therapy using representative clinical cases. 米子医学会 2018-03-31 jpn departmental bulletin paper VoR https://repository.lib.tottori-u.ac.jp/records/4330 篠原祐樹, 久家圭太, 加藤亜結美 他. 超高速電圧切り替え方式デュアルエネルギーCTを用いた脳血管内治療後の画像評価. 米子医学雑誌. 2018, 69(1-2), 25-32. http://mol.medicalonline.jp/library/journal/abstract?GoodsID=eb3yonai/2018/006901/004&name=0025-0032 http://mol.medicalonline.jp/library/journal/abstract?GoodsID=eb3yonai/2018/006901/004&name=0025-0032 AN00247383 00440558 米子医学雑誌 The Journal of the Yonago Medical Association 69 1-2 25 32 https://repository.lib.tottori-u.ac.jp/record/4330/files/jyma69(1-2)_25.pdf application/pdf 1.1 MB 2023-03-28