Intraorbital foreign body detection and localisation by radiographers: a preliminary JAFROC observer performance study
Journal article
Lockwood, P., Pittock, L., Lockwood, C., Jeffery, C. and Piper, K. 2015. Intraorbital foreign body detection and localisation by radiographers: a preliminary JAFROC observer performance study. Radiography. 2015, pp. 1-5. https://doi.org/10.1016/j.radi.2015.06.005
Authors | Lockwood, P., Pittock, L., Lockwood, C., Jeffery, C. and Piper, K. |
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Abstract | Introduction - The purpose of this study was to run a preliminary investigation to establish if a short course of learning would increase radiographers’ performance in intraorbital foreign body (IOFB) detection and localisation on pre-magnetic resonance imaging (MRI) orbital computed radiographs (CR). Method - A multi-reader multi-case (MRMC) human observer study was performed. Fifteen radiographers from 5 hospitals participated. Each radiographer reviewed a pre- and post-training image bank and was instructed to identify the presence or absence of IOFBs, indicating the lesion location on each case whilst scoring the detection using a confidence index on a 5-point scale, for 30 orbital radiographs. The results were analysed using a Jackknife free-response receiver operating characteristic (JAFROC2 equal weighted) methodology. Results -The performance of the radiographers demonstrated a statistically significant difference after a short period of training in the detection of IOFBs on orbital radiographs (F (1,14)= 12.99, df = 14.0, p = 0.0029). The JAFROC2 analysis averaged figure of merit (FOM) for the radiographers was 0.818 (95% CI 0.769, 0.867) pre-training and 0.920 (95% CI 0.891, 0.950) post-training. Conclusion - These results suggest that with a short programme of learning in image interpretation for IOFBs in orbital radiographs, radiographers should be able to achieve a high level of accuracy in the identification and localisation of IOFBs prior to MRI examination. |
Year | 2015 |
Journal | Radiography |
Journal citation | 2015, pp. 1-5 |
Publisher | Elsevier |
ISSN | 1078-8174 |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.radi.2015.06.005 |
Publication dates | |
06 Jul 2015 | |
Publication process dates | |
Deposited | 23 Sep 2015 |
Accepted | 06 Jul 2015 |
Output status | Published |
File |
https://repository.canterbury.ac.uk/item/87749/intraorbital-foreign-body-detection-and-localisation-by-radiographers-a-preliminary-jafroc-observer-performance-study
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