Two-axis MEMS scanning catheter for ultrahigh resolution three-dimensional and en face imaging

被引：102
作者：
Aguirre, Aaron D.
Herz, Paul R.
Chen, Yu
Fujimoto, James G.
Piyawattanametha, Wibool
Fan, Li
Wu, Ming C.
机构：
[1] MIT, Dept Elect Engn & Comp Sci, Cambridge, MA 02139 USA
[2] MIT, Elect Res Lab, Cambridge, MA 02139 USA
[3] Univ Calif Berkeley, Dept Elect Engn & Comp Sci, Berkeley, CA 94720 USA
[4] Univ Calif Berkeley, Integrated Photon Lab, Berkeley, CA 94720 USA
来源：
OPTICS EXPRESS | 2007年 / 15卷 / 05期
关键词：
D O I：
10.1364/OE.15.002445
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Ultrahigh resolution two and three-dimensional optical coherence tomography (OCT) imaging was performed using a miniaturized, two-axis scanning catheter based upon microelectromechanical systems (MEMS) mirror technology. The catheter incorporated a custom-designed and fabricated, 1-mm diameter MEMS mirror driven by angular vertical comb (AVC) actuators on both an inner mirror axis and an outer, orthogonal gimbal axis. Using a differential drive scheme, a linearized position response over +/- 6 degrees mechanical angle was achieved. The flexible, fiber-optic catheter device measured < 5 mm in outer diameter with a rigid length of similar to 2.5 cm at the distal end. In vivo and ex vivo images are presented with < 4 mu m axial and similar to 12 mu m transverse resolution in tissue. (c) 2007 Optical Society of America.
引用
收藏
页码：2445 / 2453
页数：9
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