[Magnetic resonance tomography (MRT) of the breast in problem patients].
Over the past few years MRI has become important in the evaluation of inconclusive mammograms. These studies were performed on high-field strength machines, which have the disadvantage of limited accessibility. We evaluated 185 investigations on 169 patients on a 0.5 Tesla MR machine using a dynamic sequence and gadolinium (Gd) DTPA. The results in 107 patients were correlated with the histological findings and MRI assessment proved correct in 44 of 47 benign lesions (93.6%) and 57 of 60 malignant lesions (95%). The 3 false positive results occurred in patients with mastitis, fibroadenoma and an ectatic vessel, respectively. Of the 3 false negative results 2 occurred in patients with microcarcinomas and were due to partial-volume artefacts, whilst the third was due to a technical error. These results compare with those reported in the literature using mainly high-field strength machines. Furthermore, unsuspected second tumours were diagnosed in the ipsilateral breast of 6 women and infiltration of the adjacent thoracic wall in 4 women, findings which had not been evident on mammography. Hence, our results indicate that a mild-field strength MR machine is a valuable tool not only for the non-invasive differentiation between benign and malignant lesions of the breast, but also for planning therapeutic strategy.
Brezina
A
A
Abteilung für bildgebende Diagnostik, Evangelisches Krankenhaus Wien-Währing.
Schwaighofer
B W
BW
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D016477:Artifacts; D001940:Breast / Q000473:pathology; D001941:Breast Diseases / Q000175:diagnosis*; D003287:Contrast Media; D003937:Diagnosis, Differential; D005260:Female; D019786:Gadolinium DTPA; D006801:Humans; D008279:Magnetic Resonance Imaging; D008875:Middle Aged; D016609:Neoplasms, Second Primary / Q000175:diagnosis; D009942:Organometallic Compounds; D004369:Pentetic Acid / Q000031:analogs & derivatives; D011237:Predictive Value of Tests
D003287:Contrast Media; D009942:Organometallic Compounds; D004369:Pentetic Acid; D019786:Gadolinium DTPA
Magnetresonanztomographie (MRT) der Mamma bei Problempatientinnen.