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Diagnostic ultrasound ( PDFDrive )

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1004 PART III Small Parts, Carotid Artery, and Peripheral Vessel Sonography

A

B

C

D

E

F

FIG. 27.61 Assessment of Upper Arm Graft (Brachial Artery to Axillary Vein Graft) With Peak Systolic Velocity (PSV) Measurement. (A)

Normal color and spectral Doppler images show artery feeding the graft 2 cm cranial to the arterial anastomosis; PSV measures 3.7 m/sec. (B)

Arterial anastomosis: PSV is 5.98 m/sec. PSV ratio is <3 : 1, normal, corroborating with no visual stenosis. (C) Midgraft body. No abnormal area of

stenosis is seen. (D) Flow volume rate measurement of 601 mL/min in midgraft. (E) Within the graft, 2 cm upstream from venous anastomosis,

PSV measures 2.09 m/sec. (F) At the venous anastomosis, PSV measures 2.47 m/sec. PSV ratio is <2 : 1, normal, corroborating with no visual

anastomotic stenosis.

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