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British Journal of Radiology (2003) 76, 3-12
© 2003 British Institute of Radiology
doi: 10.1259/bjr/14883856
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High grade and non-high grade ductal carcinoma in situ on dynamic MR mammography: characteristic findings for signal increase and morphological pattern of enhancement

H Neubauer, MD 1 M Li, MD 2 R Kuehne-Heid, MD 3 A Schneider, MD 4 and W A Kaiser, MD 1

Institutes of 1 Diagnostic and Interventional Radiology, and 4 Gynecology Friedrich-Schiller-University, Bachstrasse 18, D-07740 Jena, Germany, 2 Shao Yi Fu Hospital, Medical College of Zhejiang University, Qingchun East Road 3, Hangzhou 310016, P. R. China and 3 Institute of Pathology, Friedrich-Schiller-University, Ziegelmuehlenweg 1, D-07747 Jena, Germany



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  		Figure 1. Categories of signal enhancement. C1, no significant enhancement other than that shown by normal breast tissue over the course of the dynamic examination; C2, slowly and continously increasing signal intensity; C3, strong initial signal increase by at least 90% in the first or second minute followed by a further slow signal increase; C4, strong initial signal increase by at least 90% in the first or second minute followed by a plateau phenomenon (signal steady state); C5, strong initial signal increase by at least 90% in the first or second minute followed by a washout phenomenon (signal decrease).

 


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  		Figure 2. (a) 63-year-old patient, ductal carcinoma in situ (DCIS) G2, signal increase C2 (M4). On the right-hand side of the image, relative signal increase from 1 min to 7 min on the post-contrast scans is given. (b) 49-year-old patient, DCIS G1, signal increase C3 (M2). (c) 37-year-old patient, DCIS G2, signal increase C4 (M3). (d) 70-year-old patient, DCIS G3, signal increase C5 (M4). (e) 24-year-old patient, DCIS G2, morphological pattern of enhancement, M2. (f) 33-year-old patient, DCIS G3, morphological pattern of enhancement, M3. (g) 70-year-old patient, DCIS G3, morphological pattern of enhancement, M4.

 


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  		Figure 3. Categories of morphological pattern. M0, no significant pattern observed; M1, linear or linear-branched enhancement; M2, segmental dotted or granular enhancement; M3, segmental homogeneous enhancement; M4, focal spot-like enhancement.

 




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