Radcal Rapid-Gold+ Touch Pro X-ray Measurement System

Overview

The Radcal Rapid-Gold+ Touch Pro X-ray Measurement System is a CE-marked, IEC 61674-compliant portable dosimetry platform engineered for precision quality assurance (QA) in diagnostic radiology. It operates on the fundamental principles of ionization chamber and solid-state detector signal acquisition, converting incident X-ray photon flux into calibrated dose, dose rate, exposure time, kVp, HVL, mAs, DAP, and waveform-derived parameters. Unlike legacy benchtop analyzers, the Rapid-Gold+ Touch Pro integrates real-time signal processing firmware with an embedded ARM-based controller and high-fidelity analog front-end circuitry—enabling sub-millisecond sampling resolution and traceable metrology across fluoroscopic, radiographic, mammographic, and dental X-ray modalities. Its architecture eliminates external DAQ dependencies, delivering NIST-traceable measurements directly from the instrument’s onboard processor without requiring host PC intervention for basic QA tasks.

Key Features

• 5-inch capacitive touchscreen interface with auto-rotating 800×480 TFT LCD, chemically strengthened float glass (pencil hardness 7H), and LED backlight—optimized for glove-compatible operation in clinical environments.
• Modular sensor compatibility with Radcal’s full suite of solid-state detectors: AGMS multi-sensors, DDX6 diode arrays, 90M mA/mAs probes, AGLS light sensors, and DAP60 ionization chambers—each with factory-applied calibration coefficients stored in EEPROM.
• Dual-mode connectivity: native USB 2.0 Micro-B interface for direct data transfer and firmware updates; integrated IEEE 802.11b/g/n Wi-Fi (2.4 GHz, channels 1–11) supporting secure WPA2-PSK networks for remote configuration and live telemetry streaming.
• Onboard 16 GB flash memory capable of storing over 100,000 complete exposure records—including raw waveforms, metadata (date/time, operator ID, protocol name), and computed metrics—with automatic timestamping and sequential indexing.
• Battery-powered autonomy: 5.5 Ah lithium-polymer pack delivers ≥8 hours of continuous measurement duty cycle at 25 °C; rechargeable via 5 V / 1.7 A adapter (full charge in ≤5.5 h).
• Regulatory-ready firmware supporting audit trails, user access levels, and electronic signature workflows compliant with FDA 21 CFR Part 11 Annex 11 requirements when used with Accu-Gold 2.0 software in GxP environments.

Sample Compatibility & Compliance

The Rapid-Gold+ Touch Pro is validated for use with all X-ray beam qualities defined in IEC 61674:2016 (Medical electrical equipment – X-ray equipment for radiography and radioscopy – Requirements for safety and performance), including RQR, RQA, and RQT radiation qualities. It supports both pulsed and continuous exposures ranging from 0.5 ms to 60 s duration, with kVp measurement accuracy ±1.5% (±0.5 kV) across 40–150 kV ranges and dose linearity maintained within ±2% from 0.1 µGy to 10 Gy per exposure. All sensor interfaces comply with IEC 60601-1 third edition essential performance criteria for electromagnetic immunity (EN 61326-1:2013 Group 1 Class B) and electrostatic discharge robustness (EN 61000-4-2 Level 3). Device firmware includes configurable pass/fail thresholds aligned with AAPM Report No. 31, TG-18, and EU Council Directive 2013/59/Euratom for medical exposure optimization.

Software & Data Management

Accu-Gold 2.0 Windows software serves as the primary desktop application for advanced analysis, report generation, and system configuration. It provides full support for GLP/GMP documentation standards—including electronic signatures, change logs, and revision-controlled calibration certificate import. Key capabilities include automated Excel-based QA reporting (ASTM E2808-compliant templates), time-resolved waveform reconstruction, kVp/HVL spectral deconvolution, and DAP-to-effective-dose conversion using ICRP 103 tissue weighting factors. The software also enables batch processing of exported .csv or .agd files, trend analysis across multiple devices, and export of DICOM-SR objects for PACS integration. For mobile workflow extension, Radcal offers certified Android and iOS applications that connect via Wi-Fi to retrieve exposure history, initiate remote measurements, and push alerts upon threshold violation—fully synchronized with the central Accu-Gold database.

Applications

• Routine QA testing of radiographic and fluoroscopic X-ray generators per AAPM TG-126 and IEC 61223-3-5 protocols.
• Mammography unit evaluation including AEC response, half-value layer (HVL), and mean glandular dose (MGD) calculation using calibrated AGMS-DM sensors.
• Dental CBCT and panoramic system compliance verification against ISO 17672 and EN 62494-1.
• Interventional radiology suite commissioning and annual constancy checks per IR(ME)R 2017 regulations.
• Research-grade X-ray pulse shape analysis for synchrotron beamline characterization and micro-CT source stability monitoring.
• Training laboratories requiring intuitive, self-contained instrumentation for radiological physics education (e.g., kVp ripple measurement, timer accuracy validation).

FAQ

Is the Rapid-Gold+ Touch Pro compatible with existing Accu-Gold sensors?
Yes—it maintains full backward compatibility with all Radcal Accu-Gold series sensors, including AGMS multi-sensors, 10×6 ionization chambers, DAP60 chambers, and DDX6 diodes. Calibration coefficients are automatically recognized via sensor EEPROM handshake.
Does the device meet FDA 21 CFR Part 11 requirements for electronic records?
When operated with Accu-Gold 2.0 software configured in Audit Trail mode, the system supports electronic signatures, role-based access control, and immutable record retention—satisfying core Part 11 criteria for regulated QA documentation.
Can waveform data be exported for third-party analysis?
Yes—raw time-domain waveforms (voltage vs. time) are stored in binary .agw format and can be converted to CSV or MATLAB-compatible files using the Accu-Gold 2.0 Export Utility.
What is the typical recalibration interval recommended by Radcal?
Annual recalibration is advised under normal clinical use conditions; however, users performing high-frequency QA (e.g., daily imaging suite checks) may opt for biannual verification against a reference standard traceable to NIST or PTB.
Is wireless connectivity supported in hospital Wi-Fi networks with enterprise authentication?
The device operates exclusively in Wi-Fi Access Point (AP) mode—not client mode—so it creates its own secure network. This avoids conflicts with institutional WPA2-Enterprise infrastructure while enabling tablet/laptop pairing via standard TCP/IP sockets.