GE Discovery MI vs GE Discovery 710 PET/CT
Buyers shortlisting a refurbished GE PET/CT almost always weigh the same two systems: the digital GE Discovery MI and the analog GE Discovery 710. Both share the same gantry footprint and clinical workflow, but the underlying PET detector technology, sensitivity and total cost of ownership are very different.
This guide compares the GE Discovery MI Digital PET/CT and the GE Discovery 710 PET/CT head-to-head across detector design, image quality, CT performance, software, serviceability and used-market pricing so you can match the right system to your clinical and budget profile.
At-a-glance: Discovery MI vs Discovery 710
The Discovery MI is GE Healthcare's flagship digital PET/CT — fully digital SiPM-based LYSO detectors, 4 rings and Time-of-Flight reconstruction paired with a 128-slice CT. The Discovery 710 is GE's previous-generation analog PET/CT with LYSO crystals coupled to PMTs and Time-of-Flight (VUE Point HD/FX), usually configured with a 16- or 64-slice CT.
| Specification | Discovery MI | Discovery 710 |
|---|---|---|
| PET detector technology | Digital (SiPM) | Analog (PMT) |
| Crystal | LYSO 4×9 | LYSO |
| Rings | 3 / 4 / 5 / 6 (typ. 4) | 4 |
| Time-of-Flight | Yes (Q.Clear, SharpIR) | Yes (VUE Point FX) |
| Typical CT | 128-slice | 16 or 64-slice |
| Sensitivity (NEMA, approx.) | Up to ~20–25 cps/kBq | ~7–9 cps/kBq |
| Time-of-Flight timing | ~375 ps | ~544 ps |
| Typical year of manufacture | 2017 – 2024 | 2012 – 2018 |
| Typical used price (2026) | $700K – $1.3M | $200K – $500K |
PET detector technology and image quality
The biggest difference is the detector. The Discovery MI uses silicon photomultipliers (SiPMs) directly coupled to LYSO crystals — a true digital PET front-end. This eliminates the light-guide losses and PMT timing jitter found in analog systems and delivers higher sensitivity, sharper Time-of-Flight timing and better small-lesion detectability.
The Discovery 710 still produces excellent clinical images using PMT-based detectors and VUE Point HD/FX TOF reconstruction — for most general oncology FDG work, it remains a very capable platform. But if your program focuses on early-stage lesion detection, low-dose protocols, theranostics, neurology or research, the digital MI is a meaningful step up.
CT performance, dose and reconstruction
Discovery MI configurations are typically paired with a 128-slice CT, ASIR-V iterative reconstruction and modern dose-reduction tools. Discovery 710 systems are commonly 16-slice (some 64-slice), with ASIR available. For diagnostic CT-only workflows the MI is significantly more capable; for attenuation correction and routine localization, the 710's CT is more than adequate.
Total cost of ownership
A refurbished Discovery 710 typically costs 40–60 % less than a comparable Discovery MI. Service contracts and parts inventories for the 710 are mature and broadly available worldwide, which keeps maintenance predictable. The MI commands a higher initial price but holds its resale value better and is closer to current-generation reimbursement expectations.
Which GE PET/CT should you buy?
Choose the Discovery MI if you need flagship sensitivity, digital detectors, the latest TOF reconstruction and a 128-slice diagnostic CT — typical buyers are academic centers, theranostics programs and high-volume oncology clinics.
Choose the Discovery 710 if your priority is a proven, lower-cost, clinically capable PET/CT with worldwide service support — typical buyers are private oncology clinics, growing hospitals and second-system installations.
Frequently asked questions
- Is the GE Discovery MI better than the Discovery 710?
- The Discovery MI is GE's newer digital PET/CT — it offers higher sensitivity, sharper Time-of-Flight timing, better small-lesion detectability and a 128-slice CT. The Discovery 710 is an analog PMT-based system that still produces excellent clinical images at roughly half the used-market price.
- What is the price difference between a Discovery MI and a Discovery 710?
- In 2026 a refurbished GE Discovery 710 PET/CT typically sells in the $200,000–$500,000 range while a refurbished Discovery MI Digital PET/CT typically sells in the $700,000–$1.3 million range, depending on year, rings, tube hours and configuration.
- Do both systems support Time-of-Flight?
- Yes. The Discovery 710 supports VUE Point FX TOF reconstruction. The Discovery MI uses digital SiPM detectors with a much sharper coincidence-timing window (~375 ps vs ~544 ps) and SharpIR / Q.Clear reconstruction.
- Is parts and service support available for both systems?
- Yes. GE Healthcare and the third-party service market support both platforms worldwide. The Discovery 710 has the largest installed base and mature parts inventory; the Discovery MI is the current generation and is fully supported by OEM service contracts.
Available now from MTC
Flagship digital-detector PET/CT with 4 rings, Time-of-Flight and a 128-slice CT. ~16,000 patient exams, Performix 40 Plus, full QC reports available.
Refurbished GE Discovery 710 PET/CT with VUE Point HD/FX Time-of-Flight and 16-slice CT — proven oncology workhorse with worldwide installation.
Dual-head SPECT/CT with 16-slice diagnostic CT — refurbished, inspected and ready for cardiac, oncology and general nuclear medicine.
More buyer's guides
- GE Discovery MI vs Siemens Biograph VisionCompare the two leading digital PET/CT platforms — GE Discovery MI vs Siemens Biograph Vision — detectors, timing, CT, price and which to buy refurbished.
- Digital PET/CT vs Analog PET/CTDigital vs analog PET/CT explained — detectors, sensitivity, Time-of-Flight, dose, lesion detectability and price. Pick the right platform in 2026.
- GE PET/CT Price Guide (2026)2026 used GE PET/CT pricing — Discovery MI, 710, 690, 610, 600 and IQ. Refurbished price ranges, what drives cost and how to budget for installation.
- Refurbished PET/CT Buyer's GuideEverything to know before buying a refurbished PET/CT — detectors, inspection checklist, QC reports, installation, warranty and total cost in 2026.