Varex Imaging PaxScan 4343R DR Detector

What the Varex PaxScan 4343R Adds to a Fixed DR System

The PaxScan 4343R provides a full-size imaging area for fixed digital radiography applications while maintaining a direct wired connection to the acquisition workstation. Its 43 × 43 cm (16.9 × 16.9 in) class detector format supports broad anatomical coverage, and the receptor is available with DRZ+ or cesium iodide scintillator options to match image-quality and system-design requirements.

Key Benefits

• • Large 427 × 427 mm (16.8 × 16.8 in) total pixel area for general radiographic imaging
  • Gigabit Ethernet data output for wired image transfer to a user-supplied workstation
  • Automated Exposure Detection through Varex vTrigger technology
  • 3.4-second cycle time at a 550 ms exposure for efficient fixed-room workflows
  • 16-bit analog-to-digital conversion for detailed image data
  • DRZ+ and CsI scintillator configurations for different detector performance needs
  • Aluminum housing with carbon-fiber and aluminum sensor protection

The detector is intended for integration into a complete X-ray system. The system manufacturer or integrator is responsible for qualification, validation, and compliance for the final intended use.

 

How the PaxScan 4343R Supports Image Acquisition & System Integration

Large-Area Image Capture

The detector provides a 427 × 427 mm (16.8 × 16.8 in) total pixel area with a 3,072 × 3,072 total pixel matrix. Its square imaging format is suited to fixed radiography systems that need broad coverage without repositioning a smaller detector between routine projections.

Wired Gigabit Ethernet Communication

Image data is transferred through a Gigabit Ethernet interface to an Ethernet port on the acquisition workstation. This wired architecture is intended for fixed installations where consistent detector-to-workstation communication is a priority.

Automated Exposure Detection

Varex vTrigger Automated Exposure Detection allows the detector to recognize an X-ray exposure without requiring a dedicated generator synchronization signal in supported system designs. The detector also provides expose-request, prep, and expose-OK control connections for integrated workflows.

Embedded Varex Smart Panel Software

M-series Varex Smart Panel software is embedded within the receptor. Developers communicate with the detector through VSP COMM on the workstation, while the onboard Control Panel manages receptor settings and configuration. The included ViVA sample imaging application supports evaluation and integration work.

 

Where the Varex PaxScan 4343R is Used

The available product documentation identifies the PaxScan 4343R for fixed digital radiography. It is an integration component rather than a complete X-ray system, so the final clinical use depends on the system into which it is installed and validated.

Clinical Environment

The detector is suited to fixed radiography rooms and other stationary DR configurations that use a wired detector connection and a user-supplied acquisition workstation.

• • Fixed general radiography systems
  • Stationary wall stand or table-based DR configurations when supported by the system design
  • OEM and system-integrator digital radiography platforms

Supported Imaging Application

The manufacturer identifies digital radiography as the supported application. The source documentation does not assign the detector to specific medical specialties, patient populations, or examination types.

• • General digital radiographic image acquisition within a qualified fixed X-ray system

 

How the Detector Fits Into a Fixed Radiography Workflow

The PaxScan 4343R is installed as the image receptor within a fixed DR system. During an examination, the detector receives the X-ray exposure, converts the captured signal into 16-bit digital image data, and transfers the image to the connected workstation through Gigabit Ethernet.

Exposure and Image Transfer Sequence

• • The system prepares the detector through the supported exposure-control interface or uses AED in a compatible configuration.
  • The detector captures the exposure within a 350 to 4,000 ms X-ray window.
  • Image data is converted at 16-bit depth and transmitted to the workstation through Gigabit Ethernet.
  • The detector is ready for the next acquisition after the specified 3.4-second cycle time at a 550 ms exposure.

Actual workflow behavior depends on the generator, workstation, acquisition software, and system integration implemented by the equipment manufacturer.

 

Detector Technologies Built Into the PaxScan 4343R

Amorphous Silicon Sensor with PIN Technology

The receptor uses an amorphous silicon sensor with PIN technology. It has a 139 μm (0.0055 in) pixel pitch and a limiting resolution of 3.6 line pairs per millimeter.

DRZ+ and CsI Scintillator Options

The detector is available with DRZ+ or cesium iodide scintillator configurations. The CsI version provides the higher published DQE values, while both configurations share the same total detector area and 139 μm (0.0055 in) pixel pitch. Active area, effective matrix, weight, DQE, and MTF vary by scintillator.

Mechanical and Environmental Design

The aluminum housing and carbon-fiber/aluminum sensor protection support use in a fixed installation. The detector is specified for high-shock tolerance, operation from 10°C to 40°C (50°F to 104°F) at the back cover, and non-condensing humidity from 10% to 90%.

 

Is the Varex PaxScan 4343R the Right Detector for the System?

The PaxScan 4343R is a strong fit for fixed DR system designs that require a large square imaging area, wired Ethernet communication, automated exposure detection, and integration through Varex M-series software tools. Detector selection should account for scintillator type, system geometry, workstation compatibility, generator communication, and validation requirements.

 

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Varex Imaging PaxScan 4343R Specifications

Sensor

• • Receptor type: Amorphous silicon with PIN technology
  • Scintillator: DRZ+ or CsI
  • Total pixel area: 427 × 427 mm (16.8 × 16.8 in)
  • Active area, DRZ+: 424 × 424 mm (16.7 × 16.7 in)
  • Active area, CsI: 421 × 421 mm (16.6 × 16.6 in)
  • Total pixel matrix: 3,072 × 3,072
  • Effective pixel matrix, DRZ+: 3,052 × 3,052
  • Effective pixel matrix, CsI: 3,032 × 3,032
  • Pixel pitch: 139 μm (0.0055 in)
  • Limiting resolution: 3.6 lp/mm

Image Quality at 2.1 μGy

• • DQE at 0 lp/mm: DRZ+ 38%; CsI 78%
  • DQE at 1 lp/mm: DRZ+ 27%; CsI 55%
  • DQE at 2 lp/mm: DRZ+ 16%; CsI 42%
  • DQE at 3 lp/mm: DRZ+ 7%; CsI 28%
  • DQE at Nyquist: DRZ+ 3%; CsI 14%
  • MTF at 1 lp/mm: DRZ+ 54%; CsI 56%
  • MTF at 2 lp/mm: DRZ+ 23%; CsI 27%
  • MTF at 3 lp/mm: DRZ+ 9%; CsI 14%
  • MTF at Nyquist: DRZ+ 6%; CsI 10%

Communications and Exposure Control

• • Cycle time at 550 ms: 3.4 seconds
  • X-ray window: 350 to 4,000 ms
  • Data output: Gigabit Ethernet
  • A/D conversion: 16-bit
  • Workstation interface: Ethernet port
  • Exposure-control inputs: Expose-Request and Prep
  • Exposure-control output: Expose-OK
  • Automated Exposure Detection: vTrigger

Mechanical

• • Weight, DRZ+: 6.1 kg ±0.1 kg (13.4 lb ±0.2 lb)
  • Weight, CsI: 6.2 kg ±0.1 kg (13.7 lb ±0.2 lb)
  • Housing material: Aluminum
  • Sensor protection material: Carbon fiber and aluminum
  • Overall panel dimensions: Approximately 469 × 469 × 37 mm (18.46 × 18.46 × 1.46 in), based on the published dimensional drawing

Environmental

• • Shock: High-shock tolerance
  • Operating temperature at back cover: 10°C to 40°C maximum (50°F to 104°F)
  • Storage temperature: -20°C to 70°C (-4°F to 158°F)
  • Operating and storage humidity: 10% to 90%, non-condensing

Power

• • Maximum power dissipation: 14 W
  • Power supply/adaptor: 90 to 240 VAC, 47 to 63 Hz

Software and Workstation

• • Embedded detector software: M-series Varex Smart Panel software
  • Workstation communication software: VSP COMM
  • Included sample application: ViVA
  • Published VSP COMM compatibility: Windows 10, 32-bit and 64-bit
  • Workstation: User-supplied

Published Regulatory Standards

• • United States: ANSI/AAMI ES 60601-1:2012
  • Canada: CAN/CSA C22.2 No. 60601-1:14
  • European Union: IEC/EN 60601-1:2012

Specifications are provided for product evaluation and may vary by configuration or revision. Final system performance, compatibility, validation, and regulatory compliance depend on the complete X-ray system and its intended use.