Xeromammogram vs. Digital Mammogram: Key Differences Explained
Xeromammography (film-based) and digital mammography (full-field digital mammography, FFDM) both use X-rays but differ in image capture, processing, and capabilities.
Comparison
| Feature | Xeromammography (Film) | Digital Mammography (FFDM) |
|---|---|---|
| Image Capture | X-ray → photoconductive plate → toner → paper | X-ray → digital detector → electronic signal → monitor |
| Image Manipulation | Fixed; limited (window/level on lightbox) | Dynamic: zoom, contrast, inversion, CAD, tomosynthesis |
| Radiation Dose | Higher | Lower (detectors more sensitive) |
| Storage/Transmission | Physical films (space, degradation, transport) | Electronic (PACS, cloud, teleradiology) |
| Workflow | Chemical processing, manual handling | Instant preview, QA automated, integrated RIS/PACS |
| Availability | Obsolete; rare | Standard of care globally |
Tomosynthesis (3D Mammography)
Digital enables low-dose multi-angle slices → reduces overlap, improves cancer detection (+30–40%), lowers recall rates.
Film-based xeromammography is obsolete. Digital is superior in quality, dose, workflow, and advanced applications.
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