Effect of source spectral shape on task-based assessment of detection and resolution in optical coherence tomography

    Authors

    A. C. Akcay; E. Clarkson;J. P. Rolland

    Comments

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    Abbreviated Journal Title

    Appl. Optics

    Keywords

    OBJECTIVE ASSESSMENT; IMAGE QUALITY; PERFORMANCE; OBSERVERS; Optics

    Abstract

    We demonstrate the effect of the spectral shape of broadband light sources in a task-based approach for assessment of signal detection and resolution in optical coherence tomography. We define two binary tasks: The signal is either present or absent and the signal can be either resolved or not. In a transparent sample bounded by two uniform interfaces we study the minimum detectable change in the index of refraction as well as the minimum resolvable distance between the layers in correlation with the source spectral shape and power. Results show that the area under the receiver operating curve (AUC) for a signal-detection task is not affected by the shape of the spectrum but solely by its optical power, whereas spectral shaping has an effect, which we quantify, on the AUC for the resolution task. Moreover, the AUC is demonstrated in relation to the concept of system sensitivity for a signal-detection task. (c) 2005 Optical Society of America.

    Journal Title

    Applied Optics

    Volume

    44

    Issue/Number

    35

    Publication Date

    1-1-2005

    Document Type

    Article

    Language

    English

    First Page

    7573

    Last Page

    7580

    WOS Identifier

    WOS:000234012400009

    ISSN

    1559-128X

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