Thursday, May 7, 2015 (12:30 p.m. in Yost 306)

Title: Parameter Determination for a Channelized Hotelling Detectability Experiment

Speaker: Zhengyi Liu (Case Western Reserve University)

Advisor: Steven Izen (Professor, Case Western Reserve University)

Abstract: In CT scanning it is desirable to quantify when an object can be detected among a noisy background. This problem is an application for signal detection theory. This theory attempts to quantify how easy is to discern signals from noisy backgrounds. A Channelized Hotelling observer is introduced to measure detectability of an object in a CT image. Numerical experiments were performed to identify optimal parameter selection when using Laguerre-Gauss templates with channelized Hotelling detectability measure.