Journal
OPTICS EXPRESS
Volume 20, Issue 21, Pages 23944-23953Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.20.023944
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Funding
- National Institutes of Health [R01 CA157277, R01 EB000712, R01 EB008085, R01 CA134539, U54 CA136398, R01 CA159959, P41 EB002182]
- Korea Research Foundation
- Korean Government [KRF-2007-357-C00039]
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We have created a 2.5-mm outer diameter integrated photoacoustic and ultrasonic mini-probe which can be inserted into a standard video endoscope's instrument channel. A small-diameter focused ultrasonic transducer made of PMN-PT provides adequate signal sensitivity, and enables miniaturization of the probe. Additionally, this new endoscopic probe utilizes the same scanning mirror and micromotor-based built-in actuator described in our previous reports; however, the length of the rigid distal section of the new probe has been further reduced to similar to 35 mm. This paper describes the technical details of the mini-probe and presents experimental results that both quantify the imaging performance and demonstrate its in vivo imaging capability, which suggests that it could work as a mini-probe for certain clinical applications. (C) 2012 Optical Society of America
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