National ENG equipment includes advanced systems for measuring eye movements and diagnosing vestibular disorders, with options ranging from traditional electrode-based ENG to video-based VNG systems.

Overview of ENG Equipment

Electronystagmography (ENG) is a diagnostic tool used to evaluate balance disorders, vertigo, and cranial nerve function by recording involuntary eye movements (nystagmus) in response to various stimuli . ENG systems typically use electrodes placed around the eyes to detect electrical activity, while modern video-based systems (VNG) use infrared cameras integrated into goggles for precise eye tracking .

Common ENG and VNG Systems

• ICS Chartr 200: A comprehensive vestibular test system offering systematic ENG/VNG testing with integrated software for analysis .
• VO425 and VO25: Complete vestibular analysis systems designed for patient comfort and ease of administration, with optional VisualLab modules for specialized oculomotor testing .
• Otopront VNG System: Uses dual miniature videocameras in goggles to record eye movements, supporting mVNG and vHIT testing for detailed vestibular assessment .
• VertiGoggles Wireless: Portable, cable-free infrared goggle system for essential vestibular testing, ideal for quick and efficient clinical use .
• ED600 VNYS and VNYUS ED610: Systems with high-quality image acquisition, allowing visualization and recording of nystagmus during standard vestibular tests .

Key Features

• Testing Capabilities: ENG systems can perform saccades, gaze, pursuit, positional, Dix-Hallpike, caloric, and optokinetic tests .
• Software Integration: Many systems include software for data analysis, sensitivity adjustment, and patient history documentation .
• Patient Comfort: Modern devices are designed with ergonomic goggles, adjustable tables, and motorized calibration to accommodate various patient needs .
• Portability: Some systems, like VertiGoggles, offer USB connectivity and compact design for use in multiple clinical settings .

Clinical Applications

ENG equipment is used by ENT specialists, neurologists, and physiotherapists to:

• Diagnose vertigo and dizziness
• Assess cranial nerve function (oculomotor, trochlear, abducens, vestibular nerves)
• Evaluate inner ear disorders and differentiate between peripheral and central lesions
• Monitor treatment outcomes for vestibular rehabilitation

Laboratory Setup Considerations

A dedicated ENG lab should be well-ventilated, well-lit, and equipped with an adjustable patient table. Calibration equipment can be ceiling-mounted or wall-mounted to facilitate accurate measurements before patient positioning . Proper setup ensures consistent, high-quality results and reliable detection of vestibular asymmetries. ENG and VNG systems provide clinicians with precise, reliable tools for diagnosing and managing balance disorders, offering a range of options from traditional electrode-based setups to advanced video-based, portable systems.