Micro-Dose Radiography: Physics Of A System

David J. Curtis; Paul Bjorkholm; Edwin Frederick; Theodore L. Houk; Lloyd Salisbury; John H. Jackson

doi:10.1117/12.957167

6 July 1979 Micro-Dose Radiography: Physics Of A System

David J. Curtis, Paul Bjorkholm, Edwin Frederick, Theodore L. Houk, Lloyd Salisbury, John H. Jackson

Proceedings Volume 0173, Application of Optical Instrumentation in Medicine VII; (1979) https://doi.org/10.1117/12.957167
Event: Application of Optical Instrumentation in Medicine VII, 1979, Toronto, Canada

Abstract

The Medical Micro-Dose X-Ray System was developed for human use from airport baggage inspection equipment and is the subject of this report. A heavily collimated lmmxlmm beam of x-ray scans the object. The x-ray beam moves linearly in relation to the object in both x and y axes. The x-ray beam is detected by a sodium iodide crystal. The resultant information is digitized and a direct video display is produced. 1024 levels of gray are stored and the displayed image is computer variable (much like a computerized tomography (CT) image). This variability allows the stored image to be displayed as many useful images. Linear resolution of 0.67 line pairs per millimeter has been obtained. A routine scan of fifteen by twenty inches is produced in sixteen seconds with a dosage of less than five hundred microrads to the patient. The medical uses of the Micro-Dose System are being investigated and preliminary results are favorable.

Citation Download Citation

David J. Curtis, Paul Bjorkholm, Edwin Frederick, Theodore L. Houk, Lloyd Salisbury, and John H. Jackson "Micro-Dose Radiography: Physics Of A System", Proc. SPIE 0173, Application of Optical Instrumentation in Medicine VII, (6 July 1979); https://doi.org/10.1117/12.957167

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