caa a22 4500 477107664 CHVBK 20180405111559.0 cr unu---uuuuu 170330e19961001xx s 000 0 eng 10.1007/BF01809754 doi (NATIONALLICENCE)springer-10.1007/BF01809754 Motion and image artifacts of various intracranial aneurysm clips in a magnetic field [Elektronische Daten] [K. Ooka, M. Shibuya, Y. Suzuki] Summary: Deflection angles of 36 types of Sugita intracranial aneurysm clips (Elgiloy), 2 types of Yasargil clips (Phynox), A Kirschner chip (SUS316) and a silver clip were examined by suspending each in a 1.5-tesla MRI (TOSHIBA MRT-200/FXII). Image artifacts of 5 types of intracranial aneurysm clips were also studied quantitatively with respect to their ratio of artifcat/actual clip size using a spin-echo sequence with T1-weighted (Time of repetition (TR)=500 ms, Time of echo (TE)=20 ms) and T2-weighted (TR=2000 ms, TE=80 ms) images. All the Sugita clips from mini type to long type showed a deflection angle of less than 1.0 degree, the Yasargil clips less than 2.0 degrees, the Kirschner chip less than 6.0 degrees, and the silver chip did not move at all. Both brands of clips are therefore suitable for intracranial applications. The artifact size was directly proportional to the clip size and weight, though the ratio of artifact/actual width tended to decrease proportionately as the actual size and weight increased. The ratio of the width seemed slightly bigger than that of the length, but the difference did not reach statistical significance. There was no significant difference in the ratio of image artifacts/clip size between T1- and T2-weighted images. Springer-Verlag, 1996 Intracranial aneurysm clip nationallicence magnetic resonance imaging nationallicence Ooka K. Department of Neurosurgery, Nagoya University School of Medicine, Nagoya, Japan aut Shibuya M. Department of Neurosurgery, Nagoya University School of Medicine, Nagoya, Japan aut Suzuki Y. Department of Neurosurgery, Nagoya University School of Medicine, Nagoya, Japan aut Acta Neurochirurgica Springer-Verlag 138/10(1996-10-01), 1241-1245 0001-6268 138:10<1241 1996 138 701 https://doi.org/10.1007/BF01809754 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01809754 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ooka K. Department of Neurosurgery, Nagoya University School of Medicine, Nagoya, Japan aut NATIONALLICENCE 700 1- Shibuya M. Department of Neurosurgery, Nagoya University School of Medicine, Nagoya, Japan aut NATIONALLICENCE 700 1- Suzuki Y. Department of Neurosurgery, Nagoya University School of Medicine, Nagoya, Japan aut NATIONALLICENCE 773 0- Acta Neurochirurgica Springer-Verlag 138/10(1996-10-01), 1241-1245 0001-6268 138:10<1241 1996 138 701 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer