Final answer:
The test that would help decide if Mr. Robertson has cholecystitis would be the ultrasound. Ultrasound testing uses sound waves to image the intra-abdominal organs, including the gallbladder. Other tests that can help diagnose cholecystitis include blood tests like liver function tests (LFTs) and a complete blood count (CBC), as well as imaging tests like an abdominal x-ray, CT scan, HIDA scan, MRCP, and endoscopic ultrasound.
Step-by-step explanation:
The test that would help decide if Mr. Robertson has cholecystitis would be the ultrasound.
Ultrasound testing uses sound waves to image the intra-abdominal organs, including the gallbladder. An abdominal ultrasound can detect gallstones that might block the outflow of fluid from the pancreas and can show an abscess or a pancreatic pseudocyst.
Other tests that can help diagnose cholecystitis include blood tests like liver function tests (LFTs) and a complete blood count (CBC), as well as imaging tests like an abdominal x-ray, CT scan, HIDA scan, magnetic resonance cholangiopancreatography (MRCP), and endoscopic ultrasound.