Diagnostic Mammography
Problem-solving mammography for a specific finding — palpable lump, nipple discharge, recall from screening, or short-interval follow-up of BI-RADS 3 findings. Differs from screening in that a radiologist directs the exam in real time, ordering additional views (spot compression, magnification, true lateral, rolled views) until the finding is characterized or worked up further with ultrasound or biopsy.
Clinical pathway
- History + intake — specific complaint, location, duration.
- Standard CC + MLO if not already available.
- Directed views — spot compression for asymmetry, magnification for calcifications, true lateral for localization.
- Real-time radiologist review + additional imaging — tomosynthesis, targeted ultrasound.
- BI-RADS assessment + recommendation — additional imaging, short-interval follow-up, biopsy, or routine return.
Typical systems
- Hologic Selenia Dimensions
- Hologic 3Dimensions
- GE Senographe Pristina
- GE Senographe Essential
- Siemens MAMMOMAT Revelation
- Siemens MAMMOMAT Inspiration
Room + procedure characteristics
- Exam time: 30–60 min vs 10–15 for screening.
- Dose: slightly higher than screening due to additional views.
- Team: dedicated breast imager + mammographer; often co-scheduled with breast ultrasound.
Equipment considerations that bite
- Detector age and condition. Selenium flat panels age — 5–9 year useful life on 2009+ panels; 3 years on earlier ones. Ghosting, dead-pixel clusters, and lag artifacts are end-of-life. A diagnostic unit with a tired detector silently degrades the workup. See Clarity HD detector.
- Tomosynthesis license — diagnostic workup leans on tomo for asymmetry / architectural distortion characterization. A unit without 3D / Clarity HD / equivalent licensing isn't really a current diagnostic tool.
- Compression paddle inventory — spot, magnification, true-lateral, biopsy-localization paddles. A cracked or missing paddle stops the workup. MQSA failure mode.
- Magnification platform — diagnostic-specific accessory; if a buyer skips it on a refurb deal, half the diagnostic toolkit isn't there.
MQSA discipline
- Annual physicist survey — non-negotiable, applies to every clinical mammography unit in the U.S. Failing tests take the unit out of service until remediated.
- Daily QC + weekly phantom — tech-level QA cadence. Documentation matters as much as the test itself; ACR / FDA inspections audit the binder.
- Paddle inspection — every shift; a cracked paddle mid-survey can fail the entire inspection.
Operational reality
- Diagnostic workup runs slower than screening by design. A diagnostic-only room throughputs ~6–10 patients per day; screening rooms run 20+. Scheduling collisions are the most common operational pain.
- Co-located ultrasound — breast ultrasound is the most common adjunct; rooms with adjacent US save the patient transfer.
- License transferability on refurb — 3D, C-View, Affirm biopsy attachment, contrast-enhanced (CEM) licenses are separable and often the price-determining variables on a deal.