PI left institution, study interest wained-so stopped.

This is a prospective, non-randomized study of 50 people with suspected biliary dyskinesia. The purpose of this study is to investigate if it is possible to use ultrasound to make a diagnosis of a condition called biliary dyskinesia. The investigators null hypothesis is that there will be no statistical difference between the proposed experimental test (Ultrasound) and the HIDA scan (a nuclear medicine hepatobiliary system scan) in the diagnosis of biliary dyskinesia.

Inclusion Criteria:

1. All subjects will have a suspected clinical diagnosis of biliary dyskinesia, including an ultrasound that demonstrates biliary wall thickness of < 3 mm, and no gallstones present.
2. Written informed consent document.
3. Males and Females age > 18 years

Exclusion Criteria:

1. Subjects without a suspected clinical diagnosis of biliary dyskinesia, including an ultrasound that demonstrates biliary wall thickness of > 3 mm, and/or gallstones present.
2. Pregnant or breastfeeding women
3. Subjects who do not consent to take part in the study.