CT PERFORMANCE PHANTOM
Syncor Radiation Management (Cleveland) is offering Nuclear Associates’ CT Performance Phantom. Designed to evaluate nine parameters of CT scanner performance, the phantom consists of an 8 1/2-inch diameter acrylic tank containing a beam-width insert, a spatial resolution and line spread block, a high-contrast insert and a means for inserting alignment pins and/or TLD holders. A 1/4-inch thick Teflon band, positioned at the base of the tank and concentric to the 8-inch internal diameter, simulates human bone. For more information, call Syncor Radiation Management, toll-free, at 800-850-4608, or locally, at 440-248-9300. The company’s Web address is srm.syncor.com.


 DIGITAL POTENTIOMETER
Analog Devices (Wilmington, Mass.) introduces the AD5263 digital potentiometer, a +15-volt, quad channel, 256-position potentiometer with digital interface. Each of the four channels in the AD5263 contains a fixed resistor (20k, 50K or 200k ohms) with a wiper contact that taps the fixed resistor at a point determined by the digital code loaded into its register. With a low temperature coefficient of 50 ppm/0C, the digital potentiometer is used for a variety of applications, including optical network laser diode adjustment. For more information, visit the company’s Web site, www.analog.com/digitalpots.


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