jyma69(1-2)_25.pdf 1.02 MB
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
Imaging evaluation after neuroendovascular therapy using fast kV switching dual energy CT
Shinohara, Yuki Division of Radiology, Department of Pathophysiological and Therapeutic Science, Faculty of Medicine, Tottori University KAKEN
Kuya, Keita Division of Radiology, Department of Pathophysiological and Therapeutic Science, Faculty of Medicine, Tottori University KAKEN
Kato, Ayumi Division of Radiology, Department of Pathophysiological and Therapeutic Science, Faculty of Medicine, Tottori University
Sakamoto, Makoto Division of Neurosurgery, Department of Brain and Neurosciences, Faculty of Medicine, Tottori University Researchers DB KAKEN
Ogawa, Toshihide Division of Radiology, Department of Pathophysiological and Therapeutic Science, School of Medicine, Tottori University Faculty of Medicine
iodinated contrast media
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.
Departmental Bulletin Paper
|Current Journal Title||
The Journal of the Yonago Medical Association
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.
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.
Faculty of Medicine/Graduate School of Medical Sciences/University Hospital