Requirements Document.pdf
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- Attached to
- Large Flat Panel Detector (LFPD ) Federal contract opportunity
- Solicitation number
- CDRH-2026-133668
About this file
This document presents the minimum requirements for a large-area 2D X-ray flat panel detector procurement. The buyer seeks to purchase and deliver one (1) detector suitable for laboratory cone-beam CT (CBCT) and fluoroscopy imaging to support human-sized phantom development, testing, and validation of imaging evaluation methods. Brand name or equal products may be offered provided all minimum requirements are met or exceeded.
The detector must meet specifications across six categories: (A) Geometry/sampling with an active imaging area of at least 42.7 cm × 42.7 cm and pixel pitch not exceeding 170 µm; (B) Image quality including MTF of at least 50% at 1 lp/mm in full-resolution mode, DQE of at least 70% at 0 lp/mm, and lag not exceeding 3% on the first frame; (C) X-ray operating range compatibility of 40–150 kVp (or wider), fill factor of at least 60%, and capability for 50 µGy/frame entrance dose or better; (D) Frame rate and acquisition modes including fluoroscopy at 25+ fps with 3x3 binning, fluoro zoom at 30+ fps with 2x2 binning (if offered), CBCT projection mode at 40+ fps with 4x4 binning, and radiography at 4+ fps full resolution; (E) Environmental specifications requiring air cooling, operating temperature range of 19–49°C (or wider), relative humidity of 10–90% non-condensing (or wider), atmospheric pressure of 70–106 kPa (or wider), radiation tolerance of at least 2000 Gy, and weight not exceeding 15 kg; and (F) Delivery and support requiring complete operational delivery including all necessary electronics, interfaces, cables, adapters, documentation, and shipping to the specified address, with minimum 1-year warranty and minimum 1-year technical support (remote support required, optional onsite support separately priced).
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Minimum Requirements
To purchase and deliver one (1) large-area 2D X-ray flat panel detector suitable for laboratory cone-beam CT (CBCT) and fluoroscopy imaging to support human-sized phantom development/testing and validation of imaging evaluation methods. Brand name or equal products may be offered, provided all minimum requirements below are met or exceeded.
A) Geometry / sampling
1. Active imaging area (minimum): ≥ 42.7 cm × 42.7 cm.
2. Pixel pitch (maximum): ≤ 170 µm.
B) Image quality (minimum, measured under comparable conditions such as RQA5 or vendor’s equivalent)
4. MTF: ≥ 50% at 1 lp/mm (at full-resolution mode).
5. DQE: ≥ 70% at 0 lp/mm (quantum-limited or vendor equivalent definition).
6. Lag: ≤ 3% (first frame).
C) X-ray operating range and performance
7. Energy range compatibility: 40–150 kVp (or wider).
8. Fill factor: ≥ 60%.
9. Maximum entrance dose per frame (typical): ≥ capability for 50 µGy/frame (or better, i.e., requiring less dose for equivalent image quality).
D) Frame rate / acquisition modes (minimum capabilities)
11.Fluoroscopy mode: ≥ 25 fps at approximately 3x3 binning (or equivalent), with large FOV support.
12.Fluoro zoom mode (if offered): ≥ 30 fps at approximately 2x2 bining.
13.CBCT projection mode: ≥ 40 fps at approximately 4x4 bining.
14.Radiography (full resolution) mode: ≥ 4 fps
E) Environmental, mechanical, cooling, and robustness
15.Cooling: Air cooling (no liquid cooling requirement).
16.Operating temperature limit: 19–49°C (or wider).
17.Relative humidity: 10–90% non-condensing (or wider).
18.Atmospheric pressure: 70–106 kPa (or wider).
19.Radiation tolerance: ≥ 2000 Gy (active area) or better.
20.Weight: ≤ 15 kg (or lighter).
F) Interfaces, delivery, warranty, and support
22.Complete operational delivery: Must include all items required for operation (detector + required electronics/interface + cables/adapters + documentation) and shipping/handling to [your delivery address].
23.Warranty: Minimum 1-year warranty.
24.Technical support: Minimum 1-year technical support (remote support required;
optional onsite support may be offered as a separately priced line item).
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