Diagnostic Performance of Dual Energy CT for the Detection of Gallbladder Gallstones

Diagnostic Performance of Dual Energy CT for the Detection of Gallbladder Gallstones

To assess diagnostic performance of Dual Energy CT fo gallblader gallstone detection.

Detection of gallbladder gallstone using Dual Energy CT compare to gallblader ultrasound (gold standard).

All patients who undergo dual-energy CT scans will undergo abdominal ultrasound for gallstones.

Performance of CT to conventionnal KeV will be compare to low Kev monoenergetic reconstruction, and Effective Z.

Expected duration of inclusion 3-6 months. No follow-up.

Inclusion Criteria:

• patient referred to the radiology department for an abdominal CT for abdominal pain, suspicion of cholangitis, cholecystitis, migration of stones, acute pancreatitis, suspicion of perforated ulcer in the emergency setting.
• Non-objection of the subject to participate in the study
• Affiliation to a French social security scheme or beneficiary of such a scheme.

Exclusion Criteria:

• Cholecystectomy
• Legal incapacity or limited legal capacity, legal safeguard
• Pregnant women
• Subject unlikely to cooperate in the study and/or low cooperation anticipated by the investigator
• Subject being in the exclusion period of another study