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Diagnostic ultrasound ( PDFDrive )

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632 PART II Abdominal and Pelvic Sonography

A

B

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D

E

F

FIG. 18.9 Bile Duct: Stones. (A) Sonogram and (B) correlative noncontrast-enhanced CT show the presence of a large obstructing stone

(arrow) in the common hepatic duct. (C) Transverse sonogram shows an echogenic focus (arrow) consistent with an intraductal calculus in this

patient with recurrent primary sclerosing cholangitis. (D) Corresponding axial SPGR (spoiled gradient echo) T1-weighted pregadolinium-enhanced

magnetic resonance image shows intraductal high-frequency signal (arrow) consistent with a stone. (E) Transverse sonogram at level of the common

hepatic duct shows a nonshadowing echogenic focus (arrow) in the duct, consistent with a soft stone. (F) Corresponding T2-weighted magnetic

resonance image shows a well-deined illing defect (arrow), conirming the presence of a calculus within the proximal common duct.

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