Multiple diagnostic task performance in CT examination of the chest

K M Schartz; K S Berbaum; M T Madsen; B H Thompson; B F Mullan; R T Caldwell; B Hammett; A N Ellingson; E A Franken Jr

doi:10.1259/bjr/18244135

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Multiple diagnostic task performance in CT examination of the chest

Journal article

Open access

Peer reviewed

Multiple diagnostic task performance in CT examination of the chest

K M Schartz, K S Berbaum, M T Madsen, B H Thompson, B F Mullan, R T Caldwell, B Hammett, A N Ellingson and E A Franken Jr

British journal of radiology, Vol.86(1021), 18244135

01/2013

DOI: 10.1259/bjr/18244135

PMCID: PMC3615394

PMID: 22960243

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https://europepmc.org/articles/pmc3615394View

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Abstract

Objectives In three experiments, we studied the detection of multiple abnormality types using the satisfaction of search (SOS) paradigm, the provision of a computer-aided detection (CAD) of pulmonary nodules and a focused nodule detection task. Methods 51 chest CT examinations (24 that demonstrated subtle pulmonary nodules and 27 that demonstrated no pulmonary nodules) were read by 15 radiology residents and fellows under two experimental conditions: (1) when there were no other abnormalities present except test abnormalities in the exams (non-SOS condition), and (2) when other abnormalities were present in the exams (SOS condition). Trials from the two conditions were intermixed. Readers were invited to return for two sessions: one in which the SOS condition was repeated with a simulated CAD; another in which only the non-SOS condition was presented. Detection accuracy was measured using receiver operating characteristic (ROC) analysis. Results An SOS effect (reduced detection accuracy for the test nodules in the presence of the diverse added abnormalities) was not found. Average accuracy was much higher when the CAD prompt was provided, without cost in the detection of the added abnormalities. Accuracy for detecting nodules appearing without intermixed SOS trials was also substantially improved. Conclusions CT interpretation was highly task dependent. Nodule detection was poor in the general search task. Therefore, CAD may offer a greater performance improvement than demonstrated in experiments assessing CAD using focused search. The absence of SOS may be due to limited nodule detection even without other abnormalities. Advances in knowledge CAD prompts of nodules increase the detection accuracy of nodules and decrease the time to detection-without impairing the detection accuracy-of non-nodule abnormalities.

Algorithms

Reproducibility of Results

Solitary Pulmonary Nodule - diagnostic imaging

Radiographic Image Interpretation, Computer-Assisted - methods

Artificial Intelligence

Humans

Sensitivity and Specificity

Radiographic Image Enhancement - methods

Radiography, Thoracic - methods

Observer Variation

Pattern Recognition, Automated - methods

Details

Title: Subtitle: Multiple diagnostic task performance in CT examination of the chest
Creators: K M Schartz - Department of Radiology, The University of Iowa Roy J. and Lucille A. Carver College of Medicine, Iowa City, IA, USA
K S Berbaum
M T Madsen
B H Thompson
B F Mullan
R T Caldwell
B Hammett
A N Ellingson
E A Franken Jr
Resource Type: Journal article
Publication Details: British journal of radiology, Vol.86(1021), 18244135
DOI: 10.1259/bjr/18244135
PMID: 22960243
PMCID: PMC3615394
ISSN: 0007-1285
eISSN: 1748-880X
Language: English
Date published: 01/2013
Academic Unit: Radiology; Internal Medicine
Record Identifier: 9984094484502771

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