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Prostate MRI at 3-T: clinical impact of ultra-high b value (3,000 s/mm2) diffusion-weighted MR imaging compared to high b value of 2,000 s/mm2

Ayumu Kido¹, Tsutomu Tamada¹, Yu Ueda², Masami Yoneyama², and Akira Yamamoto¹
¹Radiology, Kawasaki Medical School, Okayama, Japan, ²Philips Japan, Tokyo, Japan

Compared with high b value DWI (b2000), ultra-high b value DWI (b3000) could not contribute to increased diagnostic performance in prostate cancer.

Prostate cancer lesion is shown as a homogeneous hypointense lesion with mass effect on T2-weighted imaging (arrow) (A) and focal early enhancement on dynamic contrast-enhanced MR imaging (arrow) (B). Signal intensity of normal prostate is lower in b3000 (D) than in b2000 (C). However, the lesion conspicuity between b2000 (arrow) and b3000 (arrow) is almost equivalent.