Image Quality and Performance Benchmarks in Vehicle and Hospital Mammography

Abstract Background Whether the quality and clinical performance of mammograms obtained in vehicles and those obtained in fixed facilities are equal remains unknown. We aimed to compare the characteristics of examinees screened in a hospital setting and a vehicle setting. Patients and Methods Data of examinees at Shuang Ho Hospital between January 1, 2013, and December 31, 2016, obtained from the Women’s Breast Screening Database were used for analyses. The records revealed that 43,807 and 11,955 women were examined in vehicles and hospital settings, respectively. The performance benchmarks including recall rate, cancer detection rate, and positive predictive value of mammography in two settings were compared. Besides, the image quality was compared by sampling 110 records from each setting. Results The hospital mammograms had a higher subtotal mean scores (189.2 ± 5.9) than did the vehicle mammograms (185.5 ± 7.7, p Conclusion Mobile mammography services should be continued with an improvement in image quality. The reduction in the number of patients assigned the BI-RADS-0 category in both the mammography service settings and enhancement of data linking to previous mammograms warrants additional attention.