Radiology · single question

Digital sensors offer several advantages over conventional film. Which of the following is NOT an advantage of the digital sensor?

  1. Reduced radiation dose to the patient
  2. Ease of intraoral placement and patient comfort
  3. Immediate image availability
  4. Ability to enhance and manipulate the image after capture
Show answer and explanation

Correct answer: B. Ease of intraoral placement and patient comfort

  • A. Digital sensors require substantially less exposure than D-speed film (commonly cited as 50–80% reduction, though less dramatic against F-speed film).
  • B. CORRECT — this is NOT an advantage. Rigid solid-state sensors (CCD/CMOS) are THICKER, more rigid, and bulkier than film, and they have an attached cable. They are consistently harder to position, less comfortable, and more likely to trigger the gag reflex — particularly in the maxillary molar and mandibular lingual regions and in children. Photostimulable phosphor (PSP) plates are closer to film in comfort but require a scanning step.
  • C. Images appear in seconds with no chemical processing, no darkroom, and no processing errors.
  • D. Contrast, density, magnification, measurement, and colorization tools are all available post-capture, and images can be stored and transmitted electronically.

Note: Digital wins on dose, speed, storage, and manipulation. Film still wins on comfort and cost of entry.

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