8 Citations
Standards in ophthalmic ultrasonography
- Medicine
- 1988
An equipment check program was developed which provides comparable data which can be applied by trained technicians under hospital conditions and which allowed measurement-based studies on the influence of selected changes of technical parameters on diagnostic criteria in the echograms.
Clinical performance measurements on ultrasonic transducers
- Medicine
- 1988
Clinical performance measurements on single-element transducers for ophthalmic ultrasound systems again stress the necessity to carry out such measurements and suggest that the use of “working frequency” according to IEC recommendations gives a better description of transducer frequency behaviour than the nominal frequency.
Transducer performance parameters and their influence on biometric results
- Physics
- 1990
Eleven transducers with working frequencies ranging from 5.1-11.9 MHz and bandwidths from 1.5 to 6.2 MHz were used on 3 commercial ultrasonic instruments with different operational principles to…
Flat ended steel wires, backscattering targets for calibrating over a large dynamic range.
- PhysicsUltrasound in medicine & biology
- 2006
Überprüfung von Gerät und Schallkopf in Klinik und Praxis
- Philosophy
- 1989
Bei der Differentialdiagnostik intraokularer Erkrankungen (Kap. 2) und bei der Differenzierung raumfordernder Prozesse der Orbita (Kap. 3) wurde anhand von Beispielen auf die Bedeutung…
Physikalisch-technische Grundlagen der Ultraschalldiagnostik
- 1989
Unter Ultraschall versteht man Schallwellen mit Frequenzen (f) jenseits der Horgrenze (d.h. f≳20 kHz). Zu ihrer physikalischen Beschreibung lassen sich Gesetzmasigkeiten verwenden, die auch von…
References
SHOWING 1-8 OF 8 REFERENCES
Performance Measurements and Quantitative Echography
- Medicine
- 1983
It was demonstrated how serious malfunctions of diagnostic ultrasonic equipment can be detected with the help of simple acoustic and electronic performance measurements, making diagnostic findings easier to be compared and valid in a more general sense.
Solid tissue model for the standardization of the echo-ophthalmograph 7200 MA (KRETZTECHNIK)
- MedicineDocumenta Ophthalmologica
- 2004
A solid tissue model, which can be used an unlimited number of times, enables the investigator to determine or check the tissue sensitivity of his instrument at any time easily and quickly.
Methods of measuring the performance of ultrasonic pulse-echo diagnostic equipment.
- Materials ScienceUltrasound in medicine & biology
- 1977
Comparative Measurements on Different Pulse-Echo Systems Using Test Reflectors
- Materials Science
- 1981
Quantitative evaluation of echographic signals has become more and more important in the last years and is now a widely employed tool for differential diagnosis. The implementation of this method,…
[PROBLEMS AND ADVANCES IN THE DIAGNOSIS OF EYE DISEASES WITH ULTRASONICS].
- MedicineKlinische Monatsblatter fur Augenheilkunde
- 1964
[Biophysical and methodical questions in ophthalmological ultrasound diagnosis].
- MedicineKlinische Monatsblatter fur Augenheilkunde
- 1970