Tuesday, April 9 Question of the Day NAVLE® Clinical Sciences VTNE® Clinical Sciences NAVLE® Clinical Sciences VTNE® Which one of these contrast media is radiolucent? Diatrizoate Air Iodine Thorium Barium Submit Answer Correct. You chose {selectedText}. Incorrect. You chose {selectedText}, but the correct answer is {correctText}. Air (and other gases like carbon dioxide, nitrous oxide) are radiolucent (i.e., black on a radiograph) because they do not absorb any x-rays. Follow this link to see an image with air used as contrast in the bladder (pneumocystogram). Barium and iodine can be used as radiopaque positive contrast media. Radiopaque media appear white on radiographs because they absorb a large amount of x-rays. Follow this link to see a radioopaque contrast media used in the bladder. More Clinical Sciences Questions September 9, 2025 September 8, 2025 September 5, 2025 September 4, 2025 Browse All Questions Get Started with ZukuReview BCSE/PAVE Plans starting at $299 For international students and graduates who need to qualify for NAVLE®. Test Prep Put your knowledge to the test Get a visual practice question delivered to your inbox daily. Sign Up
