Flat Panel Detector for Radiation Therapy Simulators

Product Specifications

Technical details and manufacturing context for Flat Panel Detector

Definition

This flat panel detector is a digital X-ray imaging component used in radiation therapy simulators. It captures high-resolution X-ray images for patient positioning, treatment planning verification, and quality assurance in radiation oncology. The detector replaces traditional film-based systems with digital technology, enabling immediate image acquisition and analysis. It features an active imaging area of 17×17 inches, with pixel pitch ranging from 139 to 200 micrometers, providing spatial resolution between 3.1 and 4.0 line pairs per millimeter. The detector supports frame rates of 15 to 30 frames per second for dynamic imaging and operates within an energy range of 40 to 150 kVp. Analog-to-digital conversion is 14 to 16 bits, enhancing contrast resolution. The device operates in temperatures from 5 to 35°C and can be stored in -10 to 50°C. Operating humidity is 30 to 75% RH (non-condensing). It has an ingress protection rating of IP54 to IP65 per IEC 60529, indicating dust and water resistance. The weight ranges from 3 to 10 kg, and power consumption is 15 to 40 W. Materials include amorphous silicon (a-Si), cesium iodide (CsI) scintillator, and gadolinium oxysulfide (Gd₂O₂S). These specifications are typical ranges; actual values must be verified with the manufacturer for the specific model. The detector is a critical component in radiation therapy simulators, ensuring accurate imaging for treatment planning and delivery.

Working Principle

The detector uses an array of photodiodes and thin-film transistors (TFTs) on a flat panel substrate. When X-rays strike the scintillator layer, they are converted to visible light. This light is then detected by the photodiodes, which convert it into electrical signals. These signals are digitized to create medical images. The scintillator materials, such as cesium iodide or gadolinium oxysulfide, efficiently absorb X-rays and emit light proportional to the incident radiation. The TFT array reads out the charge from each photodiode, enabling high-resolution imaging. The digital output allows immediate image display and analysis, facilitating real-time guidance during radiation therapy procedures.

Common Materials

Amorphous Silicon (a-Si), Cesium Iodide (CsI) scintillator, Gadolinium Oxysulfide (Gd₂O₂S)

Technical Parameters

Parameter	Typical range	Notes & selection driver
Detector Size	17×17 inch	Active imaging area
Pixel Pitch	139–200 μm	Smaller pitch gives higher resolution
Spatial Resolution	3.1–4.0 lp/mm	Determines image sharpness
Frame Rate	15–30 fps	For dynamic imaging
Energy Range	40–150 kVp	X-ray tube voltage
AD Conversion	14–16 bit	Higher bit depth improves contrast
Operating Temperature	5–35 °C	Outside range may affect performance
Storage Temperature	-10–50 °C	For non-operating conditions
Operating Humidity	30–75 %RH	Non-condensing
Ingress Protection	IP54–IP65	Dust and water resistanceIEC 60529
Weight	3–10 kg	Depends on size and materials
Power Consumption	15–40 W	Typical operating power

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Scintillator Layer Part
Converts X-ray photons to visible light photons

Material: Cesium Iodide (CsI) or Gadolinium Oxysulfide (Gd₂O₂S)
Photodiode Array
Detects visible light and converts it to electrical charge

Material: Amorphous Silicon (a-Si)
Thin-Film Transistor (TFT) Array Part
Reads and transfers electrical signals from photodiodes

Material: Amorphous Silicon (a-Si)
Readout Electronics
Amplifies, digitizes, and processes electrical signals

Material: Silicon-based integrated circuits

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Radiation Therapy Simulator

View system integration details

Manufacturers of Flat Panel Detector

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Frequently Asked Questions

What is the active imaging area of this flat panel detector?

The active imaging area is 17×17 inches, as listed in the specifications. However, you should confirm the exact dimensions with the manufacturer for the specific model you are considering.

What is the pixel pitch range?

The pixel pitch ranges from 139 to 200 micrometers. A smaller pitch generally provides higher resolution, but the actual value depends on the model. Verify with the manufacturer.

What is the operating temperature range?

The operating temperature range is 5 to 35°C. For storage, the range is -10 to 50°C. Ensure the detector is used within these limits to maintain performance.

What ingress protection rating does it have?

The ingress protection rating is IP54 to IP65 per IEC 60529, indicating dust and water resistance. The specific rating for your model should be confirmed with the manufacturer.

Data Basis

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Preliminary Technical Classification

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pressure:	Atmospheric pressure only (non-pressurized device)
other spec:	Humidity: 30-75% RH (non-condensing), Radiation exposure limits per IEC 60601-1-3
temperature:	10°C to 40°C (operating), -20°C to 60°C (storage)

Flat Panel Detector

Product Specifications

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