Abstract
Objective: We compared MR-mammography, mammography (MMG) and ultrasound (US) and report our findings.
Methods: Subjects were 52 persons who underwent MRI examinations from July 1 2009 to March 31 2010 and we compared the results of MMG, US and MR-mammography for 18 patients with breast cancer.
Results: In 1 person in whom MMG had been negative, breast cancer was noted in US and multiple breast cancer was suspected based on MRI. Also in 3 subjects in whom images were difficult to obtain by US, tumors were observed in MMG and MRI, which were small-size cancers and DCIS (ductal carcinoma in situ). Furthermore, MRI was able to detect 4 satellite tumors which were not visible in US. It was thus considered to have high capability to detect such tumors. The results for measuring ADC values (10-3mm2/sec) in diffusion weighted images for several subjects were 0.964 and 0.908 for breast cancer subjects and 2.359 and 2.097 for normal subjects and those with benign tumors.
Conclusion: MRI was considered to have high detection capability with respect to breast cancer as it was able to able to detect satellite tumors that are not easy to see in MMG and US, as well as DCIS. The measurement of ADC values in MRI DWI would be highly applicable in health check-ups and should raise diagnostic accuracy.
