SubtlePET
Subtle Medical
Applies deep learning denoising to PET data, intended to support shorter scan times or reduced tracer dose while maintaining image quality.
At A Glance
- Manufacturer
- Subtle Medical
- Medical specialty
- Radiology
- Clearance route
- 510(k)
- Year authorized
- 2018
- Modality
- PET
- Role in workflow
- Image enhancement
Tracer dose and scan time are the two variables patients feel most in PET, and both are constrained by counting statistics. Denoising attacks the statistics problem directly, which is why this category arrived in PET before it arrived in most other modalities.
Where It Is Used
- Reduced tracer dose protocols
- Shortened PET acquisition
- Improved patient tolerance in long scans
Limitations Worth Knowing
Quantitative PET metrics such as standardized uptake values may shift under denoising, which affects serial comparison and treatment response assessment. Small lesion detectability is the endpoint to scrutinize, because that is where noise suppression can remove genuine signal.
Regulatory status, indications, and labeling change over time. Confirm current status on the FDA's AI/ML-Enabled Medical Devices list and in the manufacturer's current instructions for use before relying on anything stated here.