AJDRAJNR - American Journal of Neuroradiology

This Article
Right arrow Abstract Freely available
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via CrossRef
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Kiyosue, H.
Right arrow Articles by Mori, H.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Kiyosue, H.
Right arrow Articles by Mori, H.

Shapability, Memory, and Luminal Changes in Microcatheters after Steam Shaping: A Comparison of 11 Different Microcatheters

Hiro Kiyosue, Yuzo Hori, Shunro Matsumoto, Mika Okahara, Syuichi Tanoue, Yoshiko Sagara and Hiromu Mori

From the Department of Radiology, Oita University Faculty of Medicine, Oita, Japan



View larger version (31K):

[in a new window]
  		FIG 1. Change of tip angle of a microcatheter.

A, Initial tip angle. B, Tip angle following the water bath procedure for 10 minutes. C, Tip angle following guidewire procedure. D, Tip angle following the second water bath for 5 minutes.



View larger version (41K):

[in a new window]
  		FIG 2. Shapability of small-sized catheters.

Although the mean tip angle is increased according to increasing the intended tip angle in all catheters, Fas10 shows the highest shapability.



View larger version (44K):

[in a new window]
  		FIG 3. Shapability of large-sized catheters. MF and Rg show higher shapability than the others.



View larger version (45K):

[in a new window]
  		FIG 4. Durability of the shape of small-sized microcatheters. All microcatheters show reduction of tip angle after the microguidewire procedure (GW). The change rates are >10% in Fas 10 and Pg 2.0. At the final calculation, the Fas10 nonreinforced catheter shows high angle-recovery rates. All reinforced microcatheters except for Pg2.0 show similar change rates, <10%. Pg2.0 shows change rates >10% at the final calculation.



View larger version (55K):

[in a new window]
  		FIG 5. Durability of the shape of large-sized microcatheters. RT and PP show reduction of the tip angle before the guidewire procedure. All microcatheters show reduction of the tip angle following the microguidewire procedure (GW). The change rates are >10% in RT and PP. At the final calculation, RT and PP show high reduction rates and final change rates >10%. PP90 and Rg show low reduction rates throughout the examination. The nonreinforced catheter MF shows the highest angle-recover rate.



View larger version (110K):

[in a new window]
  		FIG 6. Luminal irregularities at the curved portion of the shaped microcatheters.

A, Moderate irregularity (arrows) on the lesser curvature approximately 0.04 mm in peak-to-valley measurement in RT and Rg.

B, Mild irregularity (arrows) on the lesser curvature approximately 0.015 mm in peak-to-valley measurement in Ex, Pg2.0, Rb14, and PP.

C, Smooth surface on the lesser curvature in the other microcatheters.





Copyright © 2009 by the American Society of Neuroradiology. Print ISSN: 0195-6108 Online ISSN: 1936-959X