X-ray QA dosimeter QUART nonius

Overview
The QUART nonius is a dedicated X‑ray field measurement device designed for QA/QC of X‑ray systems. It verifies field size and geometry, analyses fanned beams used in CT and dental panoramic imaging, and supports both digital and conventional modalities. The device achieves a nonius-range resolution of 0.1 mm and features a 40 mm sensor area for localized field assessment.

Mode of Operation

• Operating the QUART nonius is straightforward:
• 1. Connect the device via USB to a laptop or tablet (Windows required).
• 2. Position the head unit at the measurement location.
• 3. Use the light field or a reference marker for alignment.
• 4. Trigger the QA/QC exposure.
• 5. Immediately evaluate results with the nonius software.

Key Functional Capabilities

• Verify congruence between the light visor and the actual X‑ray field.
• Assess position, width and dose profile of fanned X‑ray beams (CT, OPG).
• Provide visible markings to align light fields or positioning lasers.
• Suitable for supplementary field measurements in radiation therapy QA.

Software & Compatibility
The nonius software is available as a single‑ or multi‑user on‑premise installation. System requirements: one available USB port. Supported operating systems: Windows 8 / 8.1 / 10 and compatible. The device is plug‑and‑play and connects via standard USB 2.0.

Applications

• Field size and geometry verification for general X‑ray QA/QC.
• Analysis of fanned beams in CT and dental panoramic (OPG) imaging.
• Supplementary field measurements in radiation therapy QA workflows.

References
Y. Popova, G. Hersemeule, R. Klausz and H. Souchay, Digital Guidance Solutions, GE Healthcare (France): DESCRIPTION AND BENEFITS OF DYNAMIC COLLIMATION IN DIGITAL BREAST TOMOSYNTHESIS, Radiation Protection Dosimetry (2015), pp. 1–4.
* Hugo de las Heras Gala et al.: QUALITY CONTROL IN RADIATION THERAPY WITHOUT FILM. Med. Phys. 40, 218 (2013).

Technical specifications

• Accuracy / Resolution: ±0.1 mm
• Exposure Threshold: Dose = 100 µGy / Dose Rate = 20 µGy/s
• Minimum Exposure: Variable; depends on application and tube filtration
• Measurement Method: Open measurement — no added filtration
• Connectivity: Standard USB (2.0)
• Plug and Play component
• System Requirements: 1 available USB port
• Operating System: Windows 8 / 8.1 / 10 and compatible
• Sensor Area: 40 mm length
• Radiopaque centre marker (visible in test exposure)
• Weight: 190 g (without USB cable)
• Head unit size: 55 x 75 x 15 mm (W x L x H)