Ultrasound Contrast Agents — Flashcards

Flashcard 1: _____ contrast studies provide better detection of small mucosal lesions, polyps, ulcers

Answer: Double (Single/Double)

Flashcard 2: 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 3: Early _____ phase CT demonstrates a well-developed peripheral arterialization, in the case of hepatic adenoma

Answer: Arterial

Flashcard 4: What is the contrast medium used for the diagnosis of esophageal perforation?_____

Answer: Iohexol

Flashcard 5: _____ helps in increasing the diagnostic capability of MRCP.

Answer: Secretin

Flashcard 6: _____ provides best visualisation of distal biliary tract

Answer: ERCP

Flashcard 7: In _____ view the patient lies in such a way that the sagittal plane of the skull is parallel to the film and the X-ray beam is projected 15 cephalocaudal

Answer: Laws

Flashcard 8: _____ provides best visualisation of proximal biliary tract

Answer: PTC

Flashcard 9: _____ is used to measure the X-ray attenuation values in CT scanning, which depends on the electron density of the tissue.

Answer: Hounsfield unit

Flashcard 10: Opacification of Cowper's gland in MCU is suggestive of stricture at _____

Answer: Bulbar urethra