Comparison of Inter-Observer Variability and Diagnostic Performance of the Fifth Edition of BI-RADS for Breast Ultrasound of Static versus Video Images.
Our aim was to compare the inter-observer variability and diagnostic performance of the Breast Imaging Reporting and Data System (BI-RADS) lexicon for breast ultrasound of static and video images. Ninety-nine breast masses visible on ultrasound examination from 95 women 19-81 y of age at five institutions were enrolled in this study. They were scheduled to undergo biopsy or surgery or had been stable for at least 2 y of ultrasound follow-up after benign biopsy results or typically benign findings. For each mass, representative long- and short-axis static ultrasound images were acquired; real-time long- and short-axis B-mode video images through the mass area were separately saved as cine clips. Each image was reviewed independently by five radiologists who were asked to classify ultrasound features according to the fifth edition of the BI-RADS lexicon. Inter-observer variability was assessed using kappa (κ) statistics. Diagnostic performance on static and video images was compared using the area under the receiver operating characteristic curve. No significant difference was found in κ values between static and video images for all descriptors, although κ values of video images were higher than those of static images for shape, orientation, margin and calcifications. After receiver operating characteristic curve analysis, the video images (0.83, range: 0.77-0.87) had higher areas under the curve than the static images (0.80, range: 0.75-0.83; p = 0.08). Inter-observer variability and diagnostic performance of video images was similar to that of static images on breast ultrasonography according to the new edition of BI-RADS.
Department of Radiology, Gangnam Severance Hospital, Research Institute of Radiological Science, College of Medicine, Yonsei University, Seoul, South Korea.
Ji Hyun
JH
Youk
Department of Biostatistics and Medical Informatics, Yonsei University College of Medicine, Seoul, South Korea.
Inkyung
I
Jung
Department of Radiology, Severance Hospital, Research Institute of Radiological Science, College of Medicine, Yonsei University, Seoul, South Korea.
Jung Hyun
JH
Yoon
Department of Radiology, Seoul St. Mary's Hospital, College of Medicine, Catholic University of Korea, Seoul, South Korea.
Sung Hun
SH
Kim
Department of Radiology, Dankook University Hospital, College of Medicine, Dankook University, Yongin, South Korea.
You Me
YM
Kim
Department of Radiology, Soonchunhyang University, Bucheon Hospital, Bucheon, South Korea.
Eun Hye
EH
Lee
Department of Radiology, Soonchunhyang University, Bucheon Hospital, Bucheon, South Korea.
Sun Hye
SH
Jeong
Department of Radiology, Severance Hospital, Research Institute of Radiological Science, College of Medicine, Yonsei University, Seoul, South Korea. Electronic address: mines@yuhs.ac.
Min Jung
MJ
Kim
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001940:Breast / Q000000981:diagnostic imaging; D001943:Breast Neoplasms / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D008875:Middle Aged; D015588:Observer Variation; D012372:ROC Curve; D011873:Radiology Information Systems; D015203:Reproducibility of Results; D016217:Ultrasonography, Mammary / Q000379:methods*; D014743:Videotape Recording; D055815:Young Adult
BI-RADS; Breast diseases; Breast neoplasms; Observer variation; Ultrasonography