Radiologists’ Performance at Reduced Recall Rates in Mammography: A Laboratory Study

Asian Pacific Journal of Cancer Prevention : APJCP
Norhashimah Mohd NorsuddinSarah Lewis

Abstract

Rationale and objectives: Target recall rates are often used as a performance indicator in mammography screening programs with the intention of reducing false positive decisions, over diagnosis and anxiety for participants. However, the relationship between target recall rates and cancer detection is unclear, especially when readers are directed to adhere to a predetermined rate. The purpose of this study was to explore the effect of setting different recall rates on radiologist’s performance. Materials and Methods: Institutional ethics approval was granted and informed consent was obtained from each participating radiologist. Five experienced breast imaging radiologists read a single test set of 200 mammographic cases (20 abnormal and 180 normal). The radiologists were asked to identify each case that they required to be recalled in three different recall conditions; free recall, 15% and 10% and mark the location of any suspicious lesions. Results: Wide variability in recall rates was observed when reading at free recall, ranging from 18.5% to 34.0%. Readers demonstrated significantly reduced performance when reading at prescribed recall rates, with lower sensitivity (H=12.891, P=0.002), case location sensitivity (H=12.512, P=...Continue Reading

Methods Mentioned

BETA
biopsy

Software Mentioned

JAFROM
BreastScreen
SPSS
JAFROC

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