Biliary atresia echocardiography or ultrasound
Ultrasound shows:
- echogenic fibrous tissue anterior to the portal vein: triangular cord sign [1]
- represents ductal remnant of extrahepatic bile duct
- hepatic artery changes
- larger hepatic arterial caliber [2]
- subcapsular hepatic arterial flow on Doppler
- right proximal hepatic artery diameter >1.5 mm
- hepatic artery to portal vein diameter ratio >0.45
- gallbladder ghost triad [3]
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References
- ↑ Lee HJ, Lee SM, Park WH, Choi SO (2003). "Objective criteria of triangular cord sign in biliary atresia on US scans". Radiology. 229 (2): 395–400. doi:10.1148/radiol.292020472. PMID 14595143.
- ↑ Lee MS, Kim MJ, Lee MJ, Yoon CS, Han SJ, Oh JT; et al. (2009). "Biliary atresia: color doppler US findings in neonates and infants". Radiology. 252 (1): 282–9. doi:10.1148/radiol.2522080923. PMID 19561262.
- ↑ Tan Kendrick AP, Phua KB, Ooi BC, Tan CE (2003). "Biliary atresia: making the diagnosis by the gallbladder ghost triad". Pediatr Radiol. 33 (5): 311–5. doi:10.1007/s00247-003-0867-z. PMID 12695863.