Strotzer, Michael and Gmeinwieser, Josef and Voelk, Markus and Fruend, Rüdiger and Seitz, Johannes and Manke, Christoph and Albrich, Helga and Feuerbach, Stefan (1998) Clinical application of a flat-panel x-ray detector based on amorphous silicon technology: Image quality and potential for radiation dose reduction in skeletal radiography. AMERICAN JOURNAL OF ROENTGENOLOGY, 171 (1). pp. 23-27. ISSN 0361-803X,
Full text not available from this repository. (Request a copy)Abstract
OBJECTIVE. The purpose of this study was to compare images obtained with a self-scanning, flat-panel X-ray detector based on amorphous silicon technology with conventional screen-film radiographs and to evaluate the possibility of radiation dose reduction in skeletal radiography. SUBJECTS AND METHODS. One hundred twenty patients were examined prospectively using a conventional screen-film system (speed, 400; detector dose, 2.5 mu Gy) and a prototype digital amorphous silicon detector (simulated speed, 400 and 800, n = 120; simulated speed, 1600, n = 40). The resulting 400 images were evaluated independently by six radiologists using a subjective five-point preference scale that rated overexposure, underexposure, contrast resolution, spatial resolution, and soft-tissue presentation. Image quality was ranked on a scale from 0 to 10 according to subjective criteria. Statistical significance of differences was determined using Student's t test and confidence intervals (95% confidence level). RESULTS. Comparison of conventional radiographs with digital images revealed a statistically significant preference for the digital system for soft-tissue presentation (speed 400 and 800) and visualization of osteoarthrotic changes (speed 400). A small but statistically significant preference for conventional images was found with respect to contrast and spatial resolution when digital speed was 800 or 1600; and the visibility of arthrosis at digital speed 1600, osteolysis at digital speed 800 and 1600, and fractures at digital speed 1600. CONCLUSION. The amorphous silicon-based system with a simulated speed of 400 provided images equivalent to screen-film radiographs. For clinical tasks such as routine follow-up studies, assessment of instability, or orthopedic measurements, a radiation dose reduction of up to 75% may be possible.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | CHEST; |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Röntgendiagnostik |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 02 May 2023 13:41 |
| Last Modified: | 02 May 2023 13:41 |
| URI: | https://pred.uni-regensburg.de/id/eprint/49681 |
Actions (login required)
 |
View Item |
