Radiology: Imaging Modalities & Basics
Understanding X-ray, CT, MRI, and ultrasound — indications, contrast, and basic interpretation.
Study these flashcards with spaced repetition
Track your progress, master difficult cards, and export to Anki. Free to start.
Start Studying — FreeFlashcards in This Deck
List the five basic densities seen on a plain radiograph from least dense (blackest) to most dense (whitest).
Air, fat, soft tissue/fluid, bone, and metal.
In the ABCDE approach to chest X-ray interpretation, what does the 'A' stand for and what should be assessed?
Airway; assess the patency and position of the trachea, carina, and main bronchi.
Which imaging modality is considered the gold standard for the initial evaluation of suspected cholelithiasis (gallstones)?
Ultrasound.
True or False: Magnetic Resonance Imaging (MRI) uses ionizing radiation to produce images.
False. MRI uses strong magnetic fields and radiofrequency pulses.
What is the most radiopaque (whitest) substance naturally found in the human body on an X-ray?
Bone (or calcium).
Which imaging modality is generally preferred for the rapid evaluation of acute trauma or suspected intracranial hemorrhage?
Non-contrast Computed Tomography (CT) of the head.
What is the classic appearance of a pulmonary embolism on a Computed Tomography Angiography (CTA)?
A partial or complete intraluminal filling defect within the pulmonary arteries.
What are the four standard anatomical areas assessed during a FAST (Focused Assessment with Sonography for Trauma) exam?
Perihepatic (Morison's pouch), perisplenic, pelvic (pouch of Douglas/retrovesical), and pericardial views.
What are the two primary contraindications for the use of iodinated IV contrast in CT imaging?
Severe renal impairment (low GFR) and a history of severe allergic reaction to contrast.
How does an acute pneumothorax typically appear on an upright chest X-ray?
A visible visceral pleural line with an absence of peripheral lung markings distal to the line.
+10 more cards — sign up to see all
Frequently Asked Questions
How many flashcards are in this Radiology: Imaging Modalities & Basics deck?
This deck contains 20 flashcards with a mix of difficulty levels: 6 easy, 10 medium, and 4 hard cards.
Is this flashcard deck free to use?
Yes! You can study these flashcards for free with our spaced repetition system. Create a free account to track your progress and save your study history.
Can I export these flashcards to Anki?
Pro users can export any deck to Anki (.apkg format) with one click. Free users can export to CSV. Start studying for free and upgrade when you need Anki export.
What is spaced repetition?
Spaced repetition is a study technique that shows you cards at increasing intervals based on how well you know them. Cards you struggle with appear more often, while mastered cards are shown less frequently. This is proven to be one of the most effective ways to memorize information.
Related Flashcard Decks
Ready to study?
Create a free account and start studying these flashcards with spaced repetition.
Get Started — Free