文摘
Our purpose was to estimate apparent diffusion coefficient (ADC) values from brain metastases (BMs). Our patient sample included 159 patients with 948 BMs. Magnetic resonance imaging was obtained with a 1.5-T device. For diffusion-weighted imaging, a multislice single-shot echo-planar imaging sequence was used (b values of 0, 500, and 1000 s/mm2). The mean ADC value of BMs was 0.98±0.32×10− 3 mm2s− 1. A total of 72.8% of BM lesions showed ADC values under 0.90×10− 3 mm2s− 1. Small-cell lung cancer had the lowest ADC values (0.86±0.27) in comparison to BMs from non-small-cell lung cancer (1.17±0.49), breast carcinoma (0.97±0.21), and malignant melanoma (0.99±0.36).