A ventilation/perfusion (V/Q) scan used to be the primary method of diagnosing pulmonary embolism.  Which of the following imaging modalities has replaced VQ scanning?

When fluid or soft tissue replaces the air normally surrounding the bronchus, the air inside the bronchus becomes visible as a series of black, branching tubular structures.  This finding is referred to as which of the following?

Heart muscle has a radiodensity closest to which of the following?

What does the “red” color on an ultrasound show?  

Which of the following imaging tests offers the intervention and visualization of the fine architecture of both the biliary tract and the pancreatic ducts?

A 70-year-old female presents complaining of abdominal pain, nausea and intractable vomiting.  You obtain the pictured KUB.  What is your diagnosis?

A 36-year-old female patient presents complaining of flank pain and gross hematuria.  Which is the best confirmatory imaging test indicated for this patient?

Which of the following structure is described as anechoic in echogenicity when seen in an ultrasound? 

Which of the following modality is used to detect a patient with vesico-uretral reflex?

A 72-year-old male presents complaining of blood in his stool.  He also notes a change in the caliber of his stools, which have become thin.  The attached picture is a close up of a barium enema performed on this patient.  What diagnosis does this picture suggest?