[Signal characteristics of malignant and benign lesions in dynamic 2D-MRT of the breast].
In a retrospective study of 400 dynamic MR examinations of the breast the signal/time ratio of 62 histopathologically correlated lesions (19 benign, 42 malignant) was evaluated. Points of evaluation were initial signal enhancement (1st and 2nd minute), post-initial signal appearance (2nd to 5th minute) and signal distribution (homogeneous, marginal). Based on these criteria, a point system was defined to help in the assessment of lesions in dynamic breast-MR imaging. The overall sensitivity of this method was 95.3%, the specificity to 89.5% and the accuracy to 93.5%. Pitfalls resulted in two cases of non-invasive carcinoma and in two patients with fibroadenoma.
Fischer
U
U
Abteilung Röntgendiagnostik I, Georg-August-Universität Göttingen.
von Heyden
D
D
Vosshenrich
R
R
Vieweg
I
I
Grabbe
E
E
D000232:Adenofibroma / Q000175:diagnosis* / Q000453:epidemiology / Q000473:pathology; D001943:Breast Neoplasms / Q000175:diagnosis* / Q000453:epidemiology / Q000473:pathology; D002277:Carcinoma / Q000175:diagnosis* / Q000453:epidemiology / Q000473:pathology; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008279:Magnetic Resonance Imaging; D012189:Retrospective Studies; D012680:Sensitivity and Specificity
Signalverhalten maligner und benigner Läsionen in der dynamischen 2D-MRT der Mamma.