Selenium-based digital radiography versus conventional film-screen radiography of the hands and feet: a subjective comparison.
| Autor: | Piraino DW; Department of Radiology, Cleveland Clinic Foundation, OH 44195, USA., Davros WJ, Lieber M, Richmond BJ, Schils JP, Recht MP, Grooff PN, Belhobek GH |
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| Jazyk: | angličtina |
| Zdroj: | AJR. American journal of roentgenology [AJR Am J Roentgenol] 1999 Jan; Vol. 172 (1), pp. 177-84. |
| DOI: | 10.2214/ajr.172.1.9888764 |
| Abstrakt: | Objective: The purpose of this study was to subjectively compare the visibility of normal anatomy of the hands and feet using selenium-based digital radiography versus conventional film-screen (100-speed) radiography. Subjects and Methods: Digital and film-screen images of the hands and feet of 24 patients were obtained without an antiscatter grid using identical X-ray exposure. Each pair of images was evaluated independently by five experienced radiologists for visibility of normal anatomy using a six-point rating scale. Soft tissues, cortical bone, and trabeculae were evaluated. For each observer, "equivalence" was defined as a mean difference in image quality of less than 1 unit on the 0-5 scale used in the study. Paired t tests were also performed to determine whether the average visibility rating of one technique was statistically superior to that of the other at a .05 level of significance for each observer and at each anatomic landmark. Results: In all categories, selenium-based digital images were rated equivalent to film-screen images by the five observers. Using the sum of the nine landmarks, four of the five observers rated the quality of selenium-based digital images superior to that of film-screen images. Conclusion: Subjective visibility of normal anatomy of the hands and feet using selenium-based digital radiography was similar to that achieved using conventional film-screen radiography. |
| Databáze: | MEDLINE |
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