An elderly man presented with recent onset of jaundice and weight loss. Most probably the abnormality is?  

Sonographically, you visualize scattered echogenic linear structures within the liver parenchyma that produce ring-down artifact. What is the most likely diagnosis?    

A _____ is any stimulus or event that increases the probability (rate of response) of an operant when presented and that has acquired its effectiveness to increase operant rate on the basis of an organism’s life or ontogenetic history.

A two-year-old girl presents in the emergency room with jaundice.  An ultrasound exam was ordered. What is the best diagnosis?

What does the term cholangitis refer to?  

Which of the following is not a treatment option for newborns with biliary atresia?  

Which of the following statements is true regarding the sonographic appearance of fatty infiltration?  

A schedule in which some rather than all operants are reinforced.

At a point in the flow over an F-35 Lightning II fighter airplane, the temperature is -30oC and the speed of the airplane is 450 m/s. The Mach number is __.

Classic symptoms of gallbladder disease include all of the following, except: