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BUTTON PUSHING MECHANISM FOR A RETROFIT DR DETECTOR

IP.com Disclosure Number: IPCOM000176635D
Publication Date: 2008-Nov-19
Document File: 5 page(s) / 3M

Publishing Venue

The IP.com Prior Art Database

Abstract

X-ray rooms that use film or CR (computed radiography) cassettes to capture x-ray images are well known. These rooms have X-ray generators with a Control Panel used to set exposure time and other technique settings, and a button to prep and fire the x-ray beam. This invention covers the case where this button is built right into the face of the console with no external electrical port exposure.

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BUTTON PUSHING

MECHANISM FOR A RETROFIT DR

DETECTOR

X-ray rooms that use film or CR (computed radiography) cassettes to capture x-ray images are well known. These rooms have X-ray generators with a Control Panel used to set exposure time and other technique settings, and a button to prep and fire the x-ray beam. This invention covers the case where this button is built right into the face of the console with no external electrical port exposure as shown in Figure 1.  This button typically closes a first electrical switch to signal the generator to prep for an exposure and a second electrical switch, further along in the stroke of the button, to signal the generator to begin the x-ray.

Figure 1. Existing film or CR imaging system with an on-panel Prep/Expose button.

The unexposed film or CR cassette is ready to capture an image at any time, but then the film must be processed or the CR cassette scanned before the image can be viewed.  An advantage of a DR (digital radiography) detector is that the image is available more quickly, however, those detectors have been sometimes integrated with an X-ray exposure device so that they can work as a whole system.  This makes the installation of a DR system time consuming and expensive since the existing X-ray generator and console are replaced with the integrated DR and X-ray system.

A retrofit DR detector that can use existing X-ray generators and consoles would have a benefit of being quickly and inexpensively installed. However, an interface is required between a retrofit DR detector and an X-ray generator to delay firing the X-ray beam until the detector is prepared to acquire an image.

In a retrofit DR system, one embodiment of the interface to the existing X-ray console involves mounting, on the face of the console, a button pushing mechanism enclosed in a box called BOB (Box-on-Button). A cable runs from that box to the DR system. The retrofit DR system provides a tethered hand switch for the operator to prep and fire the x-ray beam as shown in Figure 2.

Figure 2. Box-on-button fastened to the X-ray Generator Control Panel.

The retrofit DR system responds to the closing of the prep switch by passing the prep signal through to the X-ray consol...