Flexible miniature compound lens design for high-resolution optical coherence tomography balloon imaging catheter.
We report on a new optics design for an optical coherence tomography (OCT) balloon imaging catheter. The design involves a miniature compound gradient-index (GRIN) rod lens, which consists of a fiber optic mode-field reducer and relay rod lenses to achieve predictable high lateral resolution at a desired large working distance. The compound lens design significantly simplifies the engineering process for an OCT catheter and enables 3-D full circumferential cross sectional imaging of large luminal organs such as human esophagus. An as-designed OCT catheter is developed and demonstrated for real-time in vivo swine esophagus imaging in a 3-D spiral fashion.
Fu
Henry L
HL
University of Washington, Department of Bioengineering, Seattle, Washington 98195, USA.
Leng
Yuxin
Y
Cobb
Michael J
MJ
Hsu
Kevin
K
Hwang
Joo Ha
JH
Li
Xingde
X
D002404:Catheterization / Q000295:instrumentation*; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D020701:Esophagoscopes; D007089:Image Enhancement / Q000295:instrumentation*; D007909:Lenses; D008904:Miniaturization; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D041623:Tomography, Optical Coherence / Q000295:instrumentation*