Final answer:
There are several studies that can be used to extract the stones in choledocholithiasis, including endoscopic retrograde cholangiopancreatography (ERCP), abdominal ultrasound, and HIDA scan.
Step-by-step explanation:
In choledocholithiasis, there are several studies that can be used to extract the stones. These include:
- Endoscopic retrograde cholangiopancreatography (ERCP): This procedure uses a tube that is placed down the throat and into the stomach to inject dye and visualize the gallbladder and bile ducts on an X-ray.
- Abdominal ultrasound: This test uses sound waves to detect gallstones that may be blocking the outflow of fluid from the pancreas.
- HIDA scan: A radioactive material is injected into the patient to measure gallbladder function and detect any blockage in the bile ducts.