With regard to sonographic echogenicity, the fluid-filled lumen of a normal, patent blood vessel is considered _________ relative to the surrounding liver parenchyma.

When an inferior vena cava (IVC) mass is identified during a sonographic exam, which of the following details and images must the sonographer include to properly profile the mass? (Select all that apply) 

True or False: The most common clinical presentation of an atherosclerotic abdominal aortic aneurysm is known as saccular, which shows uniform fusiform ectasia of the aorta.

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?