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Development of a digital duplication system for portable chest radiographs. 1994

K R Hoffmann, and K Doi, and H MacMahon, and M L Giger, and R M Nishikawa, and X W Xu, and L Yao, and A Kano, and M Carlin
Kurt Rossmann Laboratories for Radiologic Image Research, Department of Radiology, University of Chicago, IL 60637.

To provide high-quality duplicate chest images for the intensive care units, we have developed a digital duplication system in which film digitization is performed in conjunction with nonlinear density correction, contrast adjustment, and unsharp mask filtering. This system provides consistent image densities over a wide exposure range and enhancement of structures in the mediastinum and upper abdominal areas, improving visibility of catheters and tubes. The image quality is often superior to that of the original radiograph and is more consistent from day to day. Repeat rates for portable chest radiographs have been reduced by more than a factor of two since implementation of digitization in December 1991, and the number of repeat examinations caused by exposure errors have been substantially reduced.

UI MeSH Term Description Entries
D007091 Image Processing, Computer-Assisted A technique of inputting two-dimensional or three-dimensional images into a computer and then enhancing or analyzing the imagery into a form that is more useful to the human observer. Biomedical Image Processing,Computer-Assisted Image Processing,Digital Image Processing,Image Analysis, Computer-Assisted,Image Reconstruction,Medical Image Processing,Analysis, Computer-Assisted Image,Computer-Assisted Image Analysis,Computer Assisted Image Analysis,Computer Assisted Image Processing,Computer-Assisted Image Analyses,Image Analyses, Computer-Assisted,Image Analysis, Computer Assisted,Image Processing, Biomedical,Image Processing, Computer Assisted,Image Processing, Digital,Image Processing, Medical,Image Processings, Medical,Image Reconstructions,Medical Image Processings,Processing, Biomedical Image,Processing, Digital Image,Processing, Medical Image,Processings, Digital Image,Processings, Medical Image,Reconstruction, Image,Reconstructions, Image
D011327 Printing Process of reproducing words or images on a physical media.
D011829 Radiation Dosage The amount of radiation energy that is deposited in a unit mass of material, such as tissues of plants or animal. In RADIOTHERAPY, radiation dosage is expressed in gray units (Gy). In RADIOLOGIC HEALTH, the dosage is expressed by the product of absorbed dose (Gy) and quality factor (a function of linear energy transfer), and is called radiation dose equivalent in sievert units (Sv). Sievert Units,Dosage, Radiation,Gray Units,Gy Radiation,Sv Radiation Dose Equivalent,Dosages, Radiation,Radiation Dosages,Units, Gray,Units, Sievert
D011856 Radiographic Image Enhancement Improvement in the quality of an x-ray image by use of an intensifying screen, tube, or filter and by optimum exposure techniques. Digital processing methods are often employed. Digital Radiography,Image Enhancement, Radiographic,Radiography, Digital,Enhancement, Radiographic Image,Enhancements, Radiographic Image,Image Enhancements, Radiographic,Radiographic Image Enhancements
D011873 Radiology Information Systems Information systems, usually computer-assisted, designed to store, manipulate, and retrieve information for planning, organizing, directing, and controlling administrative activities associated with the provision and utilization of radiology services and facilities. PACS (Radiology),Picture Archiving And Communication System,Picture Archiving and Communication Systems,Picture Archiving, Radiologic,X-Ray Information Systems,Archiving, Radiologic Picture,Information System, Radiologic,Information System, Radiology,Information Systems, Radiologic,Information Systems, Radiology,Radiologic Information System,Radiologic Information Systems,Radiologic Picture Archiving,Radiology Information System,System, Radiologic Information,System, Radiology Information,Systems, Radiologic Information,Systems, Radiology Information,Xray Information Systems,Information System, X-Ray,Information System, Xray,Information Systems, X-Ray,Information Systems, Xray,PACSs (Radiology),System, X-Ray Information,System, Xray Information,Systems, X-Ray Information,Systems, Xray Information,X Ray Information Systems,X-Ray Information System,Xray Information System
D003199 Computer Systems Systems composed of a computer or computers, peripheral equipment, such as disks, printers, and terminals, and telecommunications capabilities. Computer Architecture,Computer System,Computer Systems Development,Computer Systems Evaluation,Computer Systems Organization,Real Time System,Real-Time Systems,Organization, Computer Systems,Architecture, Computer,Architectures, Computer,Computer Architectures,Computer Systems Evaluations,Development, Computer Systems,Evaluation, Computer Systems,Evaluations, Computer Systems,Real Time Systems,Real-Time System,System, Computer,System, Real Time,System, Real-Time,Systems, Computer,Systems, Real Time,Systems, Real-Time,Time System, Real,Time Systems, Real
D003308 Copying Processes Reproduction of data in a new location or other destination, leaving the source data unchanged, although the physical form of the result may differ from that of the source. Duplicating Processes,Photocopying,Copying Process,Duplicating Process,Process, Copying,Process, Duplicating,Processes, Copying,Processes, Duplicating
D003720 Densitometry The measurement of the density of a material by measuring the amount of light or radiation passing through (or absorbed by) the material. Densitometries
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D013902 Radiography, Thoracic X-ray visualization of the chest and organs of the thoracic cavity. It is not restricted to visualization of the lungs. Thoracic Radiography,Radiographies, Thoracic,Thoracic Radiographies

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