The effect of experience on detectability in local area anatomical noise

BRETTLE, D. S., BERRY, E. and SMITH, M. A. (2007). The effect of experience on detectability in local area anatomical noise. British Journal of Radiology, 80 (951), 186-193.

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Abstract

The aim of this study was to investigate if the ability to detect clinically relevant signals, within local area clinically relevant texture, is related to experience. A two alternative forced choice interleaved staircase experiment was conducted on 101 observers split into three groups; group 1 with diagnostic experience, group 2 with experience of imaging but not of making a diagnosis and group 3 with no experience of imaging. Thresholds of detection within synthesized, clinically representative textures were measured for a 15 mm simulated lesion within an MR T1 weighted brain texture and a 2.5 mm diameter simulated lesion embedded within X-ray trabecular bone texture. The results showed that there was a significant difference in threshold detectability between the groups for the brain texture at the 95% significance level but not for the bone texture. The experienced group did not demonstrate a correlation between their bone and brain results. However, the inexperienced group had a significant correlation between the bone and brain results. There was a significant correlation between increasing experience and detectability but this was dependent on the composition of the local area anatomical noise.

Item Type:	Article
Research Institute, Centre or Group - Does NOT include content added after October 2018:	Centre for Health and Social Care Research
Identification Number:	https://doi.org/10.1259/bjr/66715796
Page Range:	186-193
Depositing User:	Ann Betterton
Date Deposited:	09 Sep 2011 14:25
Last Modified:	19 Mar 2021 00:30
URI:	https://shura.shu.ac.uk/id/eprint/3871

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