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Which of the following gas will be the slowest to diffuse through a room?

A patient with a Klatskin tumor would show which of the following?

With late stage sickle cell anemia, the spleen undergoes significant fibrosis and atrophies.  This is known as _____.

Limitations of ultrasound guidance include all of the following except:

This patient presented to the ER with a history of gallstones and intense epigastric pain.  Lab analysis showed an increase in amylase and lipase.  This longitudinal image of the pancreas demonstrates findings that are consistent with _____.

A 60 yo female patient presented with weight loss.  This scan of the LUQ is most consistent with _____.

An elderly male presented to the ER with excruciating back pain and decreased pulses bilaterally. His hematocrit and hemoglobin (H&H) were decreased. Based on the history and the transverse image of the distal abdominal aorta, what is the most likely explanation?

Color and PW Doppler of a hepatic transplantation. What is the mostl likely explanation for the Doppler findings?

According the longitudinal image of the liver, the size of the liver can be characterized as?

A congenital biliary tree anomaly that on ultrasound appears as a saccular cystic mass in the porta hepatis is _____.