Bianca Bignotti1, Alessio Signori2, Francesca Valdora3, Federica Rossi4, Massimo Calabrese5, Manuela Durando6, Giovanna Mariscotto6, Alberto Tagliafico2,5. 1. 2 Department of Health Sciences, Institute of Statistics, University of Genoa, Genoa, Italy. 2. 3 Department of Experimental Medicine, Institute of Anatomy, University of Genoa, Genoa, Italy. 3. 4 School of Medicine, Genoa, Italy. 4. 1 Department of Health Sciences, University of Genova, Genoa, Italy. 5. 5 IRCCS AOU San Martino - IST Istituto Nazionale per la Ricerca sul Cancro, Genova, Italy. 6. 6 Department of Diagnostic Imaging and Radiotherapy, AOU Città della Salute e della Scienza of Turin, Breast Imaging Service, Division of Radiology, University of Turin, Turin, Italy.
Abstract
OBJECTIVE: To perform a systematic review of the methods used for background parenchymal enhancement (BPE) evaluation on breast MRI. METHODS: Studies dealing with BPE assessment on breast MRI were retrieved from major medical libraries independently by four reviewers up to 6 October 2015. The keywords used for database searching are "background parenchymal enhancement", "parenchymal enhancement", "MRI" and "breast". The studies were included if qualitative and/or quantitative methods for BPE assessment were described. RESULTS: Of the 420 studies identified, a total of 52 articles were included in the systematic review. 28 studies performed only a qualitative assessment of BPE, 13 studies performed only a quantitative assessment and 11 studies performed both qualitative and quantitative assessments. A wide heterogeneity was found in the MRI sequences and in the quantitative methods used for BPE assessment. CONCLUSION: A wide variability exists in the quantitative evaluation of BPE on breast MRI. More studies focused on a reliable and comparable method for quantitative BPE assessment are needed. Advances in knowledge: More studies focused on a quantitative BPE assessment are needed.
OBJECTIVE: To perform a systematic review of the methods used for background parenchymal enhancement (BPE) evaluation on breast MRI. METHODS: Studies dealing with BPE assessment on breast MRI were retrieved from major medical libraries independently by four reviewers up to 6 October 2015. The keywords used for database searching are "background parenchymal enhancement", "parenchymal enhancement", "MRI" and "breast". The studies were included if qualitative and/or quantitative methods for BPE assessment were described. RESULTS: Of the 420 studies identified, a total of 52 articles were included in the systematic review. 28 studies performed only a qualitative assessment of BPE, 13 studies performed only a quantitative assessment and 11 studies performed both qualitative and quantitative assessments. A wide heterogeneity was found in the MRI sequences and in the quantitative methods used for BPE assessment. CONCLUSION: A wide variability exists in the quantitative evaluation of BPE on breast MRI. More studies focused on a reliable and comparable method for quantitative BPE assessment are needed. Advances in knowledge: More studies focused on a quantitative BPE assessment are needed.
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