Background: Ultrasonography (USG) is still the first imaging modality for initial examination in patients with obstructive jaundice. Abdominal ultrasonography is quite good in seeing the morphology of the biliary tract, although the diagnostic etiological sensitivity of various causes of obstruction is very low. Magnetic resonance cholangio pancreatography (MRCP) is a new technique and can show the same picture as ERCP examination and no contrast media is needed.
Aim: Aim for this study is knowing the results of ultrasound diagnostic tests in detecting Obstruction jaundice which was confirmed by the results of MRCP examination at Dr. Moewardi public hospital.
Method: This study uses a diagnostic test that assesses sensitivity, big specifications, negative predictive value and positive predictive value of ultrasound in detecting jaundice obstruction confirmed by the results of the MRCP examination. Sampling was done by purposive sampling, on 68 research subjects.
Results: This study show the characteristics of jaundice in the form of stones with sensitivity and specificity values of 84% and 83%, positive predictive value 75% and negative predictive value 90% and in biliary tract tumors 83% and 84%, positive predictive value 75% and predictive value negative 90%.
Conclusions: Ultrasound has a high sensitivity and specificity value in diagnosing obstructive jaundice in the case of biliary tract stones and biliary tract tumors
Keywords: Obstructive Jaundice; Diagnostic; MRCP; USG; Ultrasound
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