Reconstruction of embedded absorbers in random media with applications in noninvasive 3D imaging of skin lesions

Prashanth Kini; Atam P. Dhawan

doi:10.1117/12.139032

29 December 1992 Reconstruction of embedded absorbers in random media with applications in noninvasive 3D imaging of skin lesions

Prashanth Kini, Atam P. Dhawan

Author Affiliations +

Proceedings Volume 1767, Inverse Problems in Scattering and Imaging; (1992) https://doi.org/10.1117/12.139032
Event: San Diego '92, 1992, San Diego, CA, United States

Abstract

An optical backscatter measuring instrument called a Nevoscope is being developed to non- invasively determine 3D characteristics of skin lesions with applications in the diagnosis of malignant melanoma. Optical images are obtained by transilluminating the lesion and imaging backscattered radiation emanating from the skin surface. Such emission profiles contain information about the absorption characteristics of sub-surface structures. It is conceivable that such profiles can be used to reconstruct structural information of inhomogeneities such as mole embedded in the skin. Monte Carlo simulations of photon migration are performed to simulate the radiation pattern of backscattered radiation imaged at the surface of the medium when a light source is placed directly on the surface of the medium. In particular, simulations are performed on media with single embedded absorbers. This is the simplest model of a mole embedded in human skin. Some reconstruction algorithms based on the difference in emission profiles is the presence and absence of the absorber, are tested. A prototype Nevoscope presently being used for visual examination is described. Heuristic reconstruction schemes using images obtained from the Nevoscope are also presented.

Citation Download Citation

Prashanth Kini and Atam P. Dhawan "Reconstruction of embedded absorbers in random media with applications in noninvasive 3D imaging of skin lesions", Proc. SPIE 1767, Inverse Problems in Scattering and Imaging, (29 December 1992); https://doi.org/10.1117/12.139032

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available