RIU 436 Lecture Notes - Lecture 14: Pseudoaneurysm, Arteritis, Grayscale

• School: GVSU
• Department: Radiation and Imaging - Ultrasound
• Course: RIU 436
• Professor: Miram Teft

Document Summary

Patient with a pelvic fracture and subsequent erectile dysfunction who underwent intra-cavernosal injection of pharmacostimulant. Note that throughout the study (all four images) the psv was below the threshold valueof 35 cm/s with a wide systolic trace, indicating inadequate arterial inflow to produce rigidity. The persistently elevated end-diastolic flow in each of the traces is likely a consequence of the arterial insufficiency preventing full sinusoidal dilation (which would normally occlude venous outflow). Note only the right cavernosal artery is shown. f: venous incompetence, venous leakage of sinusoidal flow into outflow vessels, preventing complete erection, veins too large, normal inflow morphology; Sonographic: abnormal cavernosal artery, doppler, high resistance, low velocity, non-compressible, enlarged hypoechoic sinusoids iv, high flow, usually a delayed sequel to genital or perineal trauma, due to creation of arteriocavernous fistulas iii. iv. Sonographic: fistula- turbulent arterial flow, connecting to nearby vessel, grayscale- anechoic to hypoechoic compressible cavernosa.