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Breast Imaging-Reporting and Data System. A quality assurance system and lexicon originally designed for reporting mammography results from patients with breast cancer, and published as an atlas by the American College of Radiology. The BI-RADS Atlas is a peer-reporting (i.e., not for lay or patient use) tool which now includes three imaging modalities: mammography, ultrasound and MRI.

There is considerable variability in the correct interpretation of mammograms among radiologists—there is a moderate agreement among radiologists in reporting an abnormal finding when cancer is present (kappa = 0.52) and substantial agreement when cancer is not present (kappa = 0.62); BI-RADS was designed by the American College of Radiology (ACR) to provide the verbal uniformity to be used in descriptions of mammogram results, required for data submission to the ACR National Mammography Database (NMD), and to ensure concise reporting of breast-imaging findings among various practitioners and specialties.

On dictation, there may be reference to an ACR, a BI-RADS or an ACRBI-RADS classification or category related to findings. These are:
1 or N: normal;
2 or B: benign;
3 or P: probably benign;
4 or S: suspicious ;
5 or M: malignant.

BI-RADS Assessment Categories
0: Incomplete;
1: Negative;
2: Benign finding(s);
3: Probably benign;
4: Suspicious abnormality;
5: Highly suggestive of malignancy;
6: Known biopsy—proven malignancy.

Breast Composition Categories
1: Almost entirely fat;
2: Scattered fibroglandular densities;
3: Heterogeneously dense;
4: Extremely dense.
References in periodicals archive ?
It was reported as BI-RADS (Breast Imaging Reporting and Data System) category 4 lesion.
This text details a case-based approach to digital breast tomosynthesis, or 3D mammography, with discussion of its physics, including reconstruction methods, acquisition parameters, and considerations for patient dose and data, then 93 common diagnostic and screening cases, with information on presentation, images, imaging findings, BI-RADS (Breast Imaging Reporting and Data System) classification and action, differential diagnosis, essential facts, and management and digital breast tomosynthesis principles, as well as discussion of biopsy using tomosynthesis or stereotactic guidance, ending with a chapter on localization and biopsy.
Its software categorises breasts into four categories of density, in alignment with the ACR BI-RADS Atlas 5th Edition.
The vast majority (82%; 145 of 177) of biopsied lesions were BI-RADS 4, followed by BI-RADS 3 (8%; 13 of 177); BI-RADS 5 and 6 constituted 8% of cases.
BI-RADS is a standardized breast imaging findings terminology, report organization, assessment structure, and a classification system for mammography published and trademarked by the American College of Radiology.
BI-RADS classifies lesions into seven categories: 0 for incomplete and further imaging is required, 1 for negative findings, 2 for benign findings, 3 for probably benign, 4 for suspicious abnormality, 5 for a mammographic appearance, and 6 for known malignancy.
Duyarliligi en yuksek yontem %89,3 ile BI-RADS, ozgullugu en yuksek yontem ise %93,6 ile Tsukuba skorlama yontemi idi.
Their Thyroid Imaging, Reporting and Data System or TI-RADS is modelled after the American College of Radiology's BI-RADS, a widely accepted risk stratification system for breast lesions.
AIM- To determine the accuracy of Breast Ultrasound in evaluating BI-RADS 3 and 4 breast masses with pathologic diagnosis as reference gold standard.
Seventy-eight patients with BI-RADS category 3 and 4a lesions (one lesion per patient) with a maximum diameter smaller than 3 cm were enrolled in the study.
The background parenchymal enhancement (BPE) is described (similar to BI-RADS MRI BPE) in 1 of 4 categories: minimal, mild, moderate, and marked (Table and Figure 10).
6 MD is typically assessed using the American College of Radiology's BI-RADS (Breast Imaging-Reporting and Data System) breast composition categories.