Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Optical Coherence Tomography (OCT)
Post: #1

Optical Coherence Tomography (OCT) is an imaging technique that is similar in principle to ultrasound, but with superior resolution. It relies on exposing a sample to a burst of light and then measuring the reflective response from different depths and is therefore capable of scanning non-invasively beneath the surface of the sample. In ultrasound imaging, it is relatively easy to measure the time delay of each reflected packet. However, for light pulses, interferometry must be used to measure the displacement with meaningful accuracy. The amount of light reflected from each point within the scanning window in the sample is plotted graphically as an OCT image.

The goal of this investigation is to use Optical Coherence Tomography to image epileptic lesions on cortical tissue from rats. Such images would be immensely useful for surgical purposes. They would detail how deep the lesion is, allowing for precise removal that neither removes an insufficient amount of damaged tissue nor extracts too much healthy tissue.

Though commerical OCT systems already exist, they typically do not scan very deeply beneath sample surfaces. For the purpose of this study, a system must be constructed that scans up to 2 millimeters into tissue1. Unfortunately, an increase in axial depth necessitates a decrease in transverse (along the surface of the sample) resolution due to focal restrictions of the objective lenses2. However, this loss is acceptable for this investigation, as the main goal is to determine lesion depth and not to achieve perfect image clarity.

The ability to detect the positional delay of light reflecting from a tissue sample is at the heart of OCT. Low-coherence interferometry provides just that. A low-coherence light source has the potential to produce interference fringes only when integrated with light from the same source that has traveled nearly exactly the same distance3. This means that if light from such a source is split by a beam splitter into two equal parts, both of them reflect off of different objects, and combine to form one beam again, they will produce an interference fringe pattern only if thedistance they traveled while split was exactly the same.

Important Note..!

If you are not satisfied with above reply ,..Please


So that we will collect data for you and will made reply to the request....OR try below "QUICK REPLY" box to add a reply to this page
Popular Searches: kannada sparda spurti mezin oct 2013, seminar on optical coherence tomography, hp jbt result oct, optical coherence tomography seminar ppt, tomography compressed sensing java code, optical coherence and quantum optics djvu, marksheet of tybsc oct,

Quick Reply
Type your reply to this message here.

Image Verification
Image Verification
(case insensitive)
Please enter the text within the image on the left in to the text box below. This process is used to prevent automated posts.

Possibly Related Threads...
Thread: Author Replies: Views: Last Post
Bug Electrical impedance tomography seminar projects crazy 3 4,310 27-05-2013 11:28 PM
Last Post: Guest
  OPTICAL ANTENNA seminar projects crazy 2 2,123 09-05-2013 10:40 AM
Last Post: computer topic
  Optical Satellite Communication computer science crazy 4 8,897 16-01-2013 12:25 PM
Last Post: seminar details
  SEMINAR ON OPTICAL FIBRE MEASUREMENTS computer girl 0 963 09-06-2012 11:15 AM
Last Post: computer girl
  Optical Burst Switching computer science crazy 1 1,667 03-03-2012 10:06 AM
Last Post: seminar paper
  Magneto-optical current transformer technology (MOCT) computer science crazy 9 12,234 27-02-2012 12:41 PM
Last Post: seminar paper
  optical space communication or Free-space optical communication(FSO) computer science crazy 3 5,104 15-02-2012 12:47 PM
Last Post: seminar paper
  optical technology in current measurement seminarsense 3 5,921 14-02-2012 07:16 AM
Last Post: shankara chary
  Optical Camouflage computer science crazy 4 4,090 21-01-2012 11:34 AM
Last Post: seminar addict
  Optical Interconnects project topics 1 1,248 09-07-2011 03:33 PM
Last Post: smart paper boy