Diagnostic Ultrasound - Abdomen and Pelvis

Testes
ARTERIAL AND VENOUS SUPPLY
Anatomy: Pelvis
Testicular artery
Normal low-resistance waveform
Cremasteric artery
Epididymal artery
Pampiniform plexus
Epididymis
Spermatic cord
(Top) Sagittal color Doppler ultrasound of a normal left testis shows normal blood flow with a normal spectral waveform of the
testicular artery. The artery should have a low-resistance waveform and the resistive index (RI) should be between 0.48-0.75 (mean RI
0.62). (Middle) Two color Doppler ultrasounds show the epididymal arterial supply. The left image demonstrates the normal
cremasteric artery with a low-flow high-resistance pattern. The right image shows the normal epididymal artery, a branch of the
testicular artery with a low-resistance waveform. (Bottom) Sagittal grayscale ultrasound demonstrates a heterogeneous spermatic
cord adjacent to the epididymis, with anechoic tubular structures representing normal pampiniform plexus.
139