A new asymmetric screen-film combination for conventional chest radiography: evaluation in 50 patients. 1993

S J Swensen, and J E Gray, and L R Brown, and G L Aughenbaugh, and G F Harms, and J Stears
Department of Diagnostic Radiology, Mayo Clinic, Rochester, MN 55905.

OBJECTIVE A new asymmetric screen-film combination for conventional chest radiography was evaluated by four thoracic radiologists. METHODS Fifty chest radiographs obtained with a new asymmetric screen-film combination were compared with radiographs obtained in the same patients during the same breath-hold with a conventional system. Patients referred from the oncology service were studied because of the increased prevalence of abnormal findings on chest radiographs in this population. The differences in the quality of the images were assessed by four chest radiologists who used a direct-comparison technique. Eleven anatomic shadows that are normal on chest radiographs were assessed. Fifty abnormal findings also were compared. RESULTS The image quality of the new asymmetric screen-film combination was judged to be superior to that of the conventional system for normal anatomy and abnormal findings (p < or = .003). CONCLUSIONS The new asymmetric film consistently showed more clinically useful detail in the mediastinum and in the lung projected over the diaphragm and heart. The radiation dose was about 30% less with the new screen-film system.

UI MeSH Term Description Entries
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
D005069 Evaluation Studies as Topic Works about studies that determine the effectiveness or value of processes, personnel, and equipment, or the material on conducting such studies. Critique,Evaluation Indexes,Evaluation Methodology,Evaluation Report,Evaluation Research,Methodology, Evaluation,Pre-Post Tests,Qualitative Evaluation,Quantitative Evaluation,Theoretical Effectiveness,Use-Effectiveness,Critiques,Effectiveness, Theoretical,Evaluation Methodologies,Evaluation Reports,Evaluation, Qualitative,Evaluation, Quantitative,Evaluations, Qualitative,Evaluations, Quantitative,Indexes, Evaluation,Methodologies, Evaluation,Pre Post Tests,Pre-Post Test,Qualitative Evaluations,Quantitative Evaluations,Report, Evaluation,Reports, Evaluation,Research, Evaluation,Test, Pre-Post,Tests, Pre-Post,Use Effectiveness
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
D014962 X-Ray Film A film base coated with an emulsion designed for use with x-rays. Film, X-Ray,Radiographic Film,Film, Radiographic,Xray Film,Film, X Ray,Film, Xray,Films, Radiographic,Films, X-Ray,Films, Xray,Radiographic Films,X Ray Film,X-Ray Films,Xray Films

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