Model note · PET/CT
GE Discovery MI and Discovery MI Gen 2 digital PET/CT
Discovery MI is GE HealthCare's digital PET/CT, pairing a silicon photomultiplier PET detector with a Revolution EVO CT. It was first cleared in 2016, and the Gen 2 version added a six ring, 30 cm axial field of view. Ring count sets coverage and sensitivity, so units in the field differ widely in performance. It also runs as a standalone diagnostic CT, so CT and PET service issues both apply.
The model
Maker, model and type.
- Maker
- GE HealthCare (GE Medical Systems, LLC)
- Model
- Discovery MI and Discovery MI Gen 2 digital PET/CT (3, 4, 5 and 6 ring configurations)
- Device type
- PET/CT
- Main document
- Open the public document
Key specifications
What the public record says.
| Item | Value | Source |
|---|---|---|
| FDA classification | Emission computed tomography system (21 CFR 892.1200) and CT X-ray system (21 CFR 892.1750), Class II, product codes KPS and JAK | Source |
| Clearances | K161574 Discovery MI, cleared 11 August 2016; K211846 Discovery MI Gen 2, decided 20 August 2021 | Source |
| Axial field of view by ring count | 3 ring 15 cm, 4 ring 20 cm, 5 ring 25 cm, 6 ring 30 cm | Source |
| Detector | SiPM light sensor with ASIC readout; LYSO or LGSO scintillator crystals on Gen 2 (LYSO on the original) | Source |
| CT subsystem | Revolution EVO with deep learning image reconstruction (DLIR, K193170) on Gen 2 | Source |
| System sensitivity (manufacturer, 30 cm Gen 2) | Up to 30 cps/kBq, with a stated 50 percent increase in peak NECR | Source |
| Also marketed as | Discovery MI, Discovery MI Gen2, Discovery Max and Discovery Max+ | Source |
| Reconstruction and motion software | Q.Clear (BSREM) reconstruction and MotionFree data driven respiratory gating without a gating device | Source |
Recalls
Known FDA recalls.
- Z-1749-20192019-02-12
PET/CT table stop without stopping X-ray exposure (Discovery MI; Z-1750-2019 covers Discovery MI DR).
FDA record - Z-2580-20182018-05-24
GE supplied A1 electrical panel may not be wired properly to the partial system UPS.
FDA record - Z-2193-20172017-05-19
Scan could start before the prescribed delay completed.
FDA record
Sources
Where this note comes from.
- GE HealthCare Discovery MI product page (Canada)
- GE HealthCare Discovery MI Gen 2 brochure
- FDA 510(k) K211846 summary, Discovery MI Gen 2
- openFDA recall search, Discovery MI (also indexed as Discovery Ml)
- openFDA MAUDE problem counts, brand Discovery MI
Not covered: No timing resolution, spatial resolution, bore size, weight or power figure was found in an official GE document that could be opened, so they are left out; sensitivity is GE's marketing figure for the 30 cm system only. Service manuals and error codes are not public, so errorCodes is empty. FDA indexes several recalls under the misspelling Discovery Ml; recall text was read through openFDA because the FDA recall pages returned errors at drafting time. MAUDE data are too sparse to show a trend.
BMEssentia knowledge drafted from public information, reviewed by Hasan Khaled Ismail on 2026-10-24. Always follow the manufacturer's instructions for use and service manual.