| Zugriffsnummer | 12924 |
| Dokumenttyp | Zeitschriftenartikel |
| Sprache | Englisch |
| Titel | Experimental determination of practical peak voltage |
| Autor(in); Institution |
Baorong, Y.; Laboratory of Industrial Hygiene, Beijing, CHINA
Kramer, Hans-Michael; 6.21, Dosimetrie der Röntgenstrahlung und Brachytherapie, PTB-Braunschweig
Selbach, Hans-Joachim; 6.21, Dosimetrie der Röntgenstrahlung und Brachytherapie, PTB-Braunschweig
Lange, Bodo; 6.21, Dosimetrie der Röntgenstrahlung und Brachytherapie, PTB-Braunschweig
|
| Quelle/Jahr | British Journal of Radiology: 73 (2000), 870, 641 - 649 |
| ISSN | 0007-1285 |
| Verlag | London: British Institute of Radiology |
| Freie Schlagworte | Diagnostic radiology ; x-ray tube voltage |
| Zusammenfassung | In diagnostic radiology the practical peak voltage was initially derived by postulating that, for a given combination of X-ray tube and contrast geometry, a constant X-ray tube potential should produce the same low level contrast as an arbitrarily pulsating X-ray tube voltage. It has been shown previously that the practical peak voltage can be properly defined as a weighted average of the X-ray tube voltage. The weighting function is the eigenvector associated with the smallest eigenvalue of an eigenvalue problem. This definition has the advantage of being independent of the properties of the X-ray tube and of the contrast geometry. Up to now the concept of practical peak voltage was based entirely on the results of calculations. The present paper describes the experimental investigations for measuring and comparing with each other the contrast-equivalent X-ray tube voltage and practical peak voltage derived from an invasive measurement of the time-dependent X-ray tube voltage. Within the experimental uncertainties the results demonstrate the mutual equivalence of the practical peak voltage and the contrast-equivalent X-ray tube voltage. |
