Contrast and Radiological Procedures — Flashcards

Flashcard 11: The contrast agent used for MRI is _____.

Answer: Gadolinium

Flashcard 12: _____ is a standard for handling, storing, printing, and transmitting information in medical imaging.

Answer: Digital Imaging and Communications in Medicine (DICOM)

Flashcard 13: Barium _____ examines the large bowel

Answer: enema

Flashcard 14: In _____ contrast studies, thick barium coats lumen, and effervescent tablets ingested to distend lumen with air.

Answer: double (single/double)

Flashcard 15: Contrast used in CT is _____

Answer: Iodine

Flashcard 16: Barium _____ examines the small bowel

Answer: meal follow through

Flashcard 17: _____ sign is seen on barium swallow in CHPS because of passing of small streak of barium through pyloric canal

Answer: String

Flashcard 18: What is the contrast medium used for the diagnosis of perforative peritonitis?_____

Answer: Gastrograffin/Iohexol

Flashcard 19: What is the contrast medium used for the diagnosis of tracheoesophageal fistula?

Answer: Non-ionic water-soluble contrast (e.g., Iohexol) or Dionosil

Extra: - **Non-ionic water-soluble contrast** (e.g., Iohexol, Iopamidol) is the modern contrast of choice for diagnosing tracheoesophageal fistula (TEF) because it is safe if aspirated. - **Dionosil** (propyliodone) was historically used for bronchography and TEF but is now largely obsolete. - **Barium** is avoided because it can cause a severe granulomatous reaction/fibrosis in the lungs. - **High-osmolar ionic water-soluble contrast** (e.g., Gastrografin) is avoided because it can cause life-threatening pulmonary edema if aspirated.

Flashcard 20: _____ is the procedure of choice in investigating possible biliary obstruction if diagnostic limitations prevent HBUS

Answer: CT scan