Model 07-CRX

• Calibrate computed radiography (CR) plate readers and automatic exposure control (AEC)
• Assess ongoing performance of the CR plate reader, AEC and automatic programmed radiography (APR)
• Set and maintain desired clinical system speed (dose) of the CR system
• CR RADCHEX is an indispensable tool for service engineers, physicists and quality assurance personnel

Introduction
The CR RADCHEX System, consisting of a 24 x 30 cm electronic cassette, electronic interface box, universal calibration tool, and Excel software, can assess the performance and proper calibration of computed radiography (CR) automatic exposure control (AEC) systems. CR RADCHEX can be used to perform periodic assessment. The system provides information to make recommendations for corrective action and adjustments of clinical system speed and thus dose to patients. CR plate readers, AEC and automatic programmed radiography (APR) can all be correlated to maximize the function of computed radiography systems in any clinical setting.

Applications
CR RADCHEX is ideal for use by service engineers to initially calibrate and troubleshoot the CR plate reader, AEC and density selector settings. Physicists use CR RADCHEX to assess the performance of CR-AEC for compliance to clinical system speed objectives and patient dose. QA personnel can use CR RADCHEX to periodically document the performance of the CR system and to compare CR to film/screen systems regarding desired ALARA objectives. CR RADCHEX is designed to work with all major brands of CR equipment.

Features
The electronic cassette once calibrated produces an output signal directly proportional to the light output from an exposed CR imaging plate when the plate is stimulated by laser light (tracking ± 3% for energy and patient density). An interface box converts the output signal to a digital number displayed on a LCD (CR-AEC number) that further corresponds to a relative clinical system speed number also displayed on the LCD.

Excel software analyzes input (CR-AEC number) and compares it to the imaging plate signal output number (SAL# AGFA, EI# Kodak, S# Fuji, Rex# Konica). Three templates are included for service engineers, medical physicists/radiation protection inspectors and QC personnel.