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Back to the basics.

Problem

This image of an 83-year-old woman was taken as a portable chest x-ray examination. (See Fig. 1.) With the patient upright, the image was acquired using computed radiography without a grid. After processing the image plate, an area of increased density appeared over the right apex of the lung. Unsure of what caused the increased density (perhaps staples from a previous surgery?), the radiographer repeated the exam with the same result. Foreign bodies were observed in the right upper lung. The images were sent to the radiologist for further review and to assess the cause of the increased density.

Solution

Brachytherapy seeds in the apex of the right lung caused the increased density. The image was repeated using a grid, which removed the area of increased density. This was a valuable lesson to show the importance of using a grid with chest radiography.

Technical Query is a troubleshooting column that covers image acquisition and processing. This column was submitted by Ellen Alexandre, R. T. (R), program director of the School of Diagnostic Imaging--radiologic technology program of Rhode Island Hospital, located in Providence.

Technical Query is a troubleshooting column that covers image acquisition and processing. This column was submitted by Ellen Alexandre, R. T. (R), program director of the School of Diagnostic Imaging--radiologic technology program of Rhode Island Hospital, located in Providence.

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Title Annotation:chest x-ray examination
Publication:Radiologic Technology
Article Type:Column
Date:May 1, 2006
Words:222
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