Breast Imaging and Reporting Data System–Magnetic Resonance Imaging
Institut Curie, Lutetia Parisorum, Île-de-France, France European Journal of Radiology
(Impact Factor: 2.37).
03/2007; 61(2):212-5. DOI: 10.1016/j.ejrad.2006.08.036
This article reviews the technical aspects and interpretation criteria in breast MR imaging based on the first edition of breast imaging and reporting data system (BIRADS) published by the American College of Radiology (ACR) in 2003. In a second article, practical cases will be proposed for training the readers. The major aims of using this lexicon are: first to use a logical and standardized description of MR lesions, secondly to obtain a structured MR report with a clear final impression (BIRADS assessment categories), and thirdly to help comparison between different clinical studies based on similar breast MRI terminology.
Available from: PubMed Central
- "Breast MR images were interpreted by two experienced breast radiologists using the Breast Imaging Reporting and Data System (BI-RADS) MRI lexicon . Lesions identified on breast MRI were described including morphology (shape, margin, and internal architecture), enhancement kinetics (enhancement rate, amount, and the shape of time/signal intensity curve), and signal intensity of the lesion on T2WI. "
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ABSTRACT: The aim of this study was to investigate the clinical outcome of additional breast lesions identified with breast magnetic resonance imaging (MRI) in breast cancer patients.
A total of 153 patients who underwent breast MRI between July 2006 and March 2008 were retrospectively reviewed. Thirty-three patients (21.6&) were recommended for second-look ultrasound (US) for further characterization of additional lesions detected on breast MRI and these patients constituted our study population.
ASSESSMENT FOR LESIONS DETECTED ON BREAST MRI CONSISTED OF THE FOLLOWING: 25 benign lesions (73.5&), two indeterminate (5.9%), and seven malignant (20.6%) in 33 patients. Second-look US identified 12 additional lesions in 34 lesions (35.3%) and these lesions were confirmed by histological examination. Of the 12 lesions found in the 11 patients, six (50.0%) including one contralateral breast cancer were malignant. The surgical plan was altered in 18.2% (six of 33) of the patients. The use of breast MRI justified a change in treatment for four patients (66.7%) and caused two patients (33.3&) to undergo unwarranted additional surgical procedures.
Breast MRI identified additional multifocal or contralateral cancer which was not detected initially on conventional imaging in breast cancer patients. Breast MRI has become an indispensable modality in conjunction with conventional modalities for preoperative evaluation of patients with operable breast cancer.
09/2011; 14(3):213-8. DOI:10.4048/jbc.2011.14.3.213
Available from: Mieczyslaw Gajda
- "The reason for the higher prevalence of the AVS in tumors > 20 mm is probably the higher angiogenetic activity of such lesions according to the higher demand for nutrients and oxygen. However, it should be considered as well that very small vessels might be missed on bMRI due to the partial volume effects (16) and so the sensitivity of the AVS for tumors < 20 mm is decreased. A smaller slice thickness and/or higher resolution might be one approach to solve this issue. "
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ABSTRACT: The adjacent vessel sign (AVS) is a descriptor for differentiating malignant from benign breast lesions on breast MRI (bMRI). This investigation was designed to verify the previous reports on the diagnostic accuracy of AVS and to assess correlation between AVS, histopathological diagnosis, lesion size and lesion grade.
This study was approved by the local ethical committee. Experienced radiologists evaluated 1,084 lesions. The exclusion criteria were no histological verification after bMRI and breast interventions that were done up to one year before bMRI (surgery, core biopsy, chemo- or radiation therapy). The native and dynamic contrast-enhanced T1-weighted series were acquired using standardized protocols. The AVS was rated positive if a vessel leading to a lesion could be visualized. Prevalence of an AVS was correlated with the lesions' size, grade and histology using Chi-square-tests.
The AVS was significantly associated with malignancy (p < 0.001; sensitivity: 47%, specificity: 88%, positive-predictive-value [PPV]: 85%). Malignant lesions > 2 cm more often presented with an AVS than did those malignant lesions < 2 cm (p < 0.0001; sensitivity: 65%, PPV: 90%). There was no correlation of the AVS with the tumor grade. The prevalence of an AVS didn't significantly differ between invasive lobular carcinomas versus ductal carcinomas. In situ cancers were less frequently associated with an AVS (p < 0.001).
The adjacent vessel sign was significantly associated with malignancy. Thus, it can be used to accurately assess breast lesions on bMRI. In this study, the AVS was particularly associated with advanced and invasive carcinomas.
Korean journal of radiology: official journal of the Korean Radiological Society 03/2010; 11(2):178-86. DOI:10.3348/kjr.2010.11.2.178 · 1.57 Impact Factor
Available from: ajronline.org
American Journal of Roentgenology 07/2000; 175(1):35-43. DOI:10.2214/ajr.175.1.1750035 · 2.73 Impact Factor
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