Home

About

Advanced Search

Browse by Discipline

Scientific Societies

E-print Alerts

Add E-prints

E-print Network
FAQHELPSITE MAPCONTACT US


  Advanced Search  

 
MIT Confidential 1 Title: A compact mechanical probe for OCT based medical imaging that incorporates a MEMS
 

Summary: MIT Confidential 1
Title: A compact mechanical probe for OCT based medical imaging that incorporates a MEMS
scanner and a dynamically actuated objective lens
Inventors: Shorya Awtar et al.
Abstract: In this disclosure, we present the design of a compact hand-held probe for use in
Optical Coherence Tomography (OCT) based biomedical imaging. There are two salient
features that distinguish this instrument from it predecessors. To enable raster imaging, the beam
that is directed at the sample being imaged has to be scanned about two orthogonal axes. This is
typically done by using a mechanical mirror assembly mounted at the back of the probe, thus
making the instrument bulky and cumbersome to use. In our proposed design, this mechanical
assembly has been replaced by a two-axis MEMS scanner that is fitted inside the probe, thereby
making the entire scan and probe system very compact. The second novel aspect of the proposed
design is that, the lens closest to the sample is mounted on a linear guide that can be actuated
precisely while the beam is being scanned. This shifts the focus of the incident beam by a few
microns inside the sample, and hence images of successive layers separated by a few microns
can be obtained, all of which when put together allow for a 3-D reconstruction of the sample
image.
1. Background and Problem Statement
Optical Coherence Tomography (OCT) is an imaging technique that is commonly used to obtain
high-resolution cross-sectional images of microstructure in transparent as well as non-transparent

  

Source: Awtar, Shorya - Department of Mechanical Engineering, University of Michigan

 

Collections: Engineering