Liver Ultrasound Indications

What is the main indication for a single-phase contrast-enhanced computed tomography of the liver?

Why is oral contrast sometimes not necessary in liver CT imaging?

What is the ideal slice thickness for a routine liver CT imaging?

When should contrast-enhanced CT of the liver be performed during a helical/multislice CT scan?

Which of the following is a contraindication to undergoing a contrast-enhanced CT of the liver?

What imaging technique would be most suitable to assess a patient with suspected portal hypertension?

In liver imaging, what is the purpose of assessing patients with surgical shunts or TIPS procedures?

What symptom might prompt a healthcare provider to consider a contrast-enhanced CT of the liver?

During what phase does single-phase contrast-enhanced computed tomography image the liver?

What is the benefit of using multiphasic contrast-enhanced computed tomography for liver imaging compared to single-phase imaging?

What is the main reason that liver tumors enhance strongly during the arterial phase?

Why is it advisable to perform an arterial phase scan in addition to a portal venous phase CT scan for patients with suspected hypervascular primary or secondary liver tumors?

What is the appropriate imaging protocol for suspected hepatocellular cancer?

Why might some centers characterize primary liver tumors using a quadruple-phase scan?

In CT cholangiography, what is done to opacify the biliary tree?

What are some common indications for performing computed tomography of the pancreas?

Why is positive contrast (iodinated) contraindicated if CT angiography is to be performed during imaging of the pancreas?

Why is non-contrast-enhanced examination no longer indicated in initial scans for identifying calcifications in pancreatic imaging?

"What is the main reason for reconstructing images at different thicknesses in the pancreatic and portal venous phases?"

What is the main purpose of performing intraoperative cholangiography?

What is a common occurrence during intraoperative cholangiography that may be relieved by glucagon, propantheline, or amyl nitrite?

According to Le Quesne, which of the following is NOT a criterion for a normal operative choledochogram?

What is the recommended volume of contrast medium for intraoperative cholangiography?

Why is preoperative MRCP and/or EUS mentioned in relation to intraoperative cholangiography?

What is the most appropriate indication for performing percutaneous transhepatic cholangiography?

What should be checked and corrected if necessary before performing percutaneous transhepatic cholangiography?

What technique is used to insert the Chiba needle during percutaneous transhepatic cholangiography?

What might happen if contrast medium is injected under high pressure into an obstructed biliary tract?

When is the ideal time to perform a percutaneous transhepatic cholangiography?

What is the main purpose of a wide-channelled endoscope in the context described?

In the context of transhepatic puncture, what is the significance of a 22G Chiba needle?

What is a common post-stent deployment step mentioned in the text?

What is a complication mentioned that can occur due to the passage of a guidewire?

What is a specific indication for the Percutaneous Extraction of Retained Biliary Calculi using the Burhenne Technique?

What is the main reason for avoiding excessive parenchymal injection during percutaneous transhepatic cholangiography (PTC)?

What is the recommended action if a duct is not entered at the first attempt during PTC?

What is a possible complication of filling an obstructed duct system beyond capacity during PTC?

When is a further image recommended after tilting the patient towards the erect position during PTC?

What is the primary cause of septic shock during PTC according to the text?