Canon PUREViSION Detector (CT)
Canon Medical's CT detector platform across the Aquilion ONE / Genesis / PRISM generation and across mid-market Aquilion configurations. PUREViSION is Canon's marketing name for the energy-integrating detector technology; the underlying architecture is gadolinium-oxysulfide (or refined high-density variants) scintillator on integrated-ASIC photodiode readout — analogous in category to Siemens Stellar and Philips NanoPanel.
For the wide-detector geometry of the Aquilion ONE family (16 cm z-axis coverage), PUREViSION carries 320 detector rows in the premium configurations — the highest detector-row count in production CT until photon-counting NAEOTOM Alpha and is the architectural feature that defines the Aquilion ONE's whole-organ single-rotation capability.
Fits
- Aquilion ONE (original)
- Aquilion ONE / Genesis
- Aquilion ONE / PRISM Edition
- Aquilion Prime (mid-market)
Distinctive technology
- High-density Gadox-class scintillator with sub-millimeter pixel pitch.
- Integrated-ASIC readout at the detector module.
- Wide-detector geometry support — the Aquilion ONE's 16 cm z-axis coverage relies on PUREViSION's row-count architecture.
- AiCE deep-learning reconstruction support — system-level reconstruction stack rather than a detector-level capability.
- Spectral imaging support on the PRISM Edition configuration.
Failure modes
- Channel dropout — single-channel photodiode or readout-ASIC failure; streak artifacts at affected rotational angles.
- Module-level calibration drift outside tolerance.
- Thermal events — wide-detector arrays dissipate substantial power; cooling-loop integrity matters.
- Slip-ring data-coupling issues at the off-detector interface — see Slip-ring wear.
- Wide-array module matching — the 320-row detector requires consistent calibration across all modules; module-replacement events involve a more demanding calibration suite than narrow-detector platforms.
Diagnosis
- Daily air-scan / water-phantom QC.
- Streak-artifact pattern analysis — wide-detector platforms produce characteristic z-axis-correlated artifact patterns from row-level failures.
- Detector calibration history trending.
- Module temperature monitoring.
Replacement path
- Module-level swap on most platforms; row-level granularity on the wide-detector arrays.
- Per-channel correction in the calibration map up to a tolerance threshold.
- Full detector-array replacement rare; system-end-of-life event.
- Wide-detector calibration suite post-swap is more demanding than narrow-detector — z-axis uniformity matters for whole-organ acquisitions.
Field notes
- Aquilion ONE wide-detector platforms carry distinctive maintenance economics — the 320-row detector is a substantial fraction of system capital, and detector calibration / service is correspondingly weighted.
- AiCE-license tier is independent of detector hardware but interacts with detector calibration tolerance — degraded detector calibration shows up earlier on AiCE-reconstructed images than on conventional iterative reconstruction.
- Refurb-CT due-diligence on Aquilion ONE platforms — PUREViSION calibration history + air-scan baseline + visible streak / row-artifact incidence + AiCE-license inheritance.