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《Radiologic Practice》 2007-01
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Comparative Study of Tissue Equalization Techniques in Digital Radiography

WANG Jun,GAN Quan,CHEN Xin-pei. Department of Radiology,General Hospital of Nanjing Military Region,210002,P.R.China  
Objective:To study the tissue equalization with a large area amorphous silicon flat panel detector in soft copy and compared with?Methods:100 posteroanterior and 50 lateral chest radiographs were obtained using a digital flat-panel detector radiography system. The structures studied in the images of posteroanterior view of chest radiographs were the pulmonary apex, pulmonary vessels in the retrocardiac and retrodiaphragmatic regions,descending aorta and the upper margin of the sixth thoracic vertebrae etc..In the lateral view,the anatomic structures consisted of retrocardiac pulmonary vessels,the hili,pulmonary vessels overlapping with heart shadow and the diaphragm,and the upper margin of the third thoracic spine.Differences between the images obtained with tissue equalization were evaluated statistically.Results:Images of tissue equalization are superior in demonstrating the anatomic structures such as the upper margin of the sixth thoracic vertebrae and retrocardiac pulmonary vessels (P0.05) .Conclusion:The wide dynamic range of tissue equalization improves the contrast in poorly penetrated regions (e.g., mediastinum),tissues with different absorption such as bone,pulmonary parenchyma could be simultaneously displayed.
【Fund】: 江苏省教育厅指导性课题(04kjb320046)
【CateGory Index】: R816.4
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【Co-citations】
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