Which of the following descriptions best defines aortic ectasia and distinguishes it from a true abdominal aortic aneurysm? 

Which of the following statements best describes the etiology of Sickle Cell Disease?

An encapsulated collection of urine is a(n) ________.

A 74-year-old male with a history of heavy smoking presents to the ER with sudden-onset severe back pain, hypotension, and a palpable abdominal mass. An emergency ultrasound demonstrates a dilated infrarenal aorta measuring 5.2 cm with a large, poorly defined, heterogeneous fluid collection in the left paravertebral/retroperitoneal space representing blood. What is the most likely diagnosis?

A hematoma that is freshly formed and acute (0-48 hours) will typically appear on ultrasound as:

True or False: In the abdomen, veins generally lie anterior to their paired arteries; in the pelvis, this relationship reverses, with arteries generally lying anterior to veins.

A 63-year-old man reported to the ultrasound department with a complaint of post-prandial right upper quadrant (RUQ) pain and nausea and vomiting (N&V) for one week. The sonographer performed an abdominal ultrasound and produced this sagittal image of the abdominal aorta. What pathology is demonstrated? 

The abdominal organ used as a benchmark to demonstrate homogeneous echo texture is the:

What are the anatomical landmarks for the origin and termination of the inferior vena cava (IVC)?

What is the normal upper limit for the anteroposterior (AP) diameter of the common iliac artery (CIA) on a grayscale ultrasound scan?