Contrast and spatial resolution of time-resolved transillumination images

Dirk Grosenick; Heidrun Wabnitz; Herbert H. Rinneberg

doi:10.1117/12.228667

18 December 1995 Contrast and spatial resolution of time-resolved transillumination images

Dirk Grosenick, Heidrun Wabnitz, Herbert H. Rinneberg

Proceedings Volume 2626, Photon Propagation in Tissues; (1995) https://doi.org/10.1117/12.228667
Event: BiOS Europe '95, 1995, Barcelona, Spain

Abstract

We have recorded time-resolved transillumination images of solid phantoms with objects embedded differing in their scattering and absorption coefficients from those of the bulk material. The optical properties of the phantoms were chosen similar to those of human breast tissue. Several quantities such as fractional transmittance and first moments as well as Fourier amplitudes and phase shifts have been derived from measured distributions of times of flight to form two-dimensional images. We discuss contrast and effective signal to noise ratio of such images. Assuming homogeneous optical properties, from an analysis of the Fourier transforms of the measured distributions of times of flight we have obtained effective (frequency dependent) transport scattering and absorption coefficients as a function of scanning position. The coefficients deduced in this way are in qualitative agreement with the known optical properties of the bulk of the phantoms and the embedded objects.

Citation Download Citation

Dirk Grosenick, Heidrun Wabnitz, and Herbert H. Rinneberg "Contrast and spatial resolution of time-resolved transillumination images", Proc. SPIE 2626, Photon Propagation in Tissues, (18 December 1995); https://doi.org/10.1117/12.228667

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