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Imaging anatomy of the male urethra in a 35-year-old man. T2-weighted sagittal image (a) after distention of the urethra with sterile gel shows the prostatic urethra (P), level of the membranous urethra (M), and both bulbar (B) and penile (P) parts of the anterior urethra. T2-weighted axial image (b) at the level of the genitourinary membrane shows urethra as a small round structure of high signal intensity (arrow).
