10 free ARRT Sonography practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
ARRT Sonography Practice Test 7Tutor mode
Question 1 of 10
Superficial Structures and Other Sonographic Procedures
A 5-week-old boy has projectile nonbilious vomiting. Using a pyloric muscle thickness of 3 mm or more and a channel length of 15 mm or more as abnormal, the sonographer measures 4.2 mm and 18 mm. The measurements stay unchanged over 10 minutes, and no fluid passes into the duodenum. Which diagnosis is most likely?