Large Flat Panel Detector (LFPD )

Background
The U.S. Food and Drug Administration (FDA) is conducting market research to identify potential sources capable of providing a large-area 2D X-ray flat panel detector suitable for laboratory cone-beam CT (CBCT) and fluoroscopy imaging. The goal of this contract is to support human-sized phantom development, testing, and validation of imaging evaluation methods. This notice is issued for market research purposes only and does not constitute a Request for Proposal (RFP) or any commitment to issue a solicitation or award a contract.

Work Details
The FDA seeks one (1) large-area 2D X-ray flat panel detector that meets or exceeds the following minimum technical requirements:
- Active imaging area: ≥ 42.7 cm × 42.7 cm
- Pixel pitch: ≤ 170 µm
- MTF: ≥ 50% at 1 lp/mm (full-resolution mode, RQA5 or equivalent)
- DQE: ≥ 70% at 0 lp/mm (quantum-limited or vendor equivalent)
- Lag (first frame): ≤ 3%
- Energy range: 40–150 kVp (or wider)
- Fill factor: ≥ 60%
- Max entrance dose/frame: ≥ capability for 50 µGy/frame
- Fluoroscopy mode frame rate: ≥ 25 fps at ~3×3 binning, large FOV
- Fluoro zoom mode frame rate: ≥ 30 fps at ~2×2 binning (if offered)
- CBCT projection mode frame rate: ≥ 40 fps at ~4×4 binning
- Radiography full-res frame rate: ≥ 4 fps
- Cooling type: Air cooling only (no liquid cooling)
- Operating temperature range: 19–49°C (or wider)
- Relative humidity tolerance: 10–90% non-condensing (or wider)
- Atmospheric pressure tolerance: 70–106 kPa (or wider)
- Radiation tolerance: ≥ 2,000 Gy (active area)
- Weight limit: ≤ 15 kg
Delivery requirements include a complete operational kit consisting of the detector, electronics, cables, and documentation, along with a minimum one-year warranty and remote technical support.