Digital Detector – LG 17HQ901G-B

Oxide thin-film transistors (IGZO or similar oxide semiconductors) offer two fundamental advantages over conventional amorphous silicon TFTs in digital radiography detectors. Higher electron mobility means each pixel reads charge more efficiently, capturing more signal from each X-ray photon that converts in the CsI scintillator. Lower leakage current reduces electronic noise between exposures, improving the signal-to-noise ratio at low dose levels.

The result in clinical use: the 17HQ901G achieves 0.78 DQE at 0 lp/mm and 0.57 DQE at 1 lp/mm, compared to 0.66 and 0.43 for the a-Si 17HQ701G model. Image lag – the ghosting of previous exposures in subsequent images – is also significantly reduced, improving image quality in rapid sequential imaging workflows.

The 43×43 cm square active area captures full adult bilateral chest fields in PA and AP projections without cropping. For spine studies, the square format captures thoracic and upper lumbar vertebrae in a single exposure, reducing the number of images required for full-spine assessment. This eliminates stitching software requirements, stitching artifacts, and the additional positioning time required with smaller 14×17-inch detectors for the same exam types.

The 3072×3072 pixel matrix at 140 micrometer pitch provides consistent resolution across the full square area, ensuring detail is equally sharp at the panel corners as at the center – important for bilateral comparison of lung fields in chest radiography.

IP68 rating: Dust-tight and submersible to 1 meter depth for 30 minutes. Protects against fluid spills, cleaning solutions, contrast media, and the daily contaminants of a busy radiology department. The 17HQ901G can be wiped down with hospital-grade disinfectants without damaging the panel.
Load capacity: 400 kg uniform load for 60 seconds, 200 kg point load. Supports full patient weight on the detector without structural damage – critical for erect chest and AP exams where the patient rests on or against the detector.
Drop resistance: Tested to 1.5 meters per IEC 60601-1 – the standard drop height that accounts for accidental drops from standing height.
Shock monitoring: Built-in accelerometer logs drop and impact events, enabling service teams to diagnose damage from shock rather than from normal imaging use.

Hot-swap battery: The 36Wh Li-ion battery can be replaced in under 60 seconds without powering down the detector or losing stored images. The included 2-slot charger keeps a second battery ready at all times, enabling unlimited runtime across all-day shifts.
OLED status display: The embedded OLED panel shows battery level, wireless signal strength, remaining storage capacity, connection mode (wired/wireless/AP), and dynamic mode status. Technologists verify detector readiness at a glance without returning to the console.
Access Point mode: The 17HQ901G creates its own Wi-Fi access point for direct laptop or tablet connection – enabling bedside, portable, and point-of-care imaging without requiring a facility network connection.
On-board storage: 200 images stored locally when offline, automatically forwarded when network connection resumes. No images are lost during brief connectivity drops.

IEC 60601-1: Medical electrical equipment general safety
IEC 60601-1-2: EMC requirements for medical electrical equipment
IEC 60601-1-11: Requirements for medical electrical equipment in home care
Drop resistance: IEC 60601-1 (1.5m)
IP68: IEC 60529 dust and water ingress protection
RoHS: Hazardous substance restriction compliance
DICOM: PS 3.x DICOM conformance for image acquisition and transfer
Wireless: IEEE 802.11 a/b/g/n/ac
Warranty: 36 months from Medical Outfitters