Measuring and testing – Instrument proving or calibrating – Volume of flow – speed of flow – volume rate of flow – or mass...
Patent
1987-09-16
1990-02-27
Noland, Tom
Measuring and testing
Instrument proving or calibrating
Volume of flow, speed of flow, volume rate of flow, or mass...
73 1R, 12866001, G01D 1800, G01B 1500, A61B 800, G09B 2314
Patent
active
049035231
ABSTRACT:
A test object for use in determining the accuracy of and to calibrate ultrasonic scanning equipment is disclosed. The test object provides for the determination of elevational resolution. Additionally, the test object provides for the determination of the existence, location, intensity and width of side lobes, both substantially in the direction of the scanning plane and in substantially the direction normal to the scanning plane.
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patent: 4704892 (1987-11-01), Tarnai
patent: 4729235 (1988-03-01), Podleeh
"Slice Thickness Measurements", J. Ultrasound Med., no. 7, pp. 48714 498, pub. Sep. 1988; Albert Goldstein, Ph.D.
A. Goldstein, "Quality Assurance in Diagnostic Ultrasound", Chapters 7 and 9.2, U.S. Dept. of Health and Human Services, FDA 81-8139 (Oct. 1980), pp. i-x & 1-66.
A. Goldstein, "Slice-Thickness Artifacts in Gray Scale Ultrasound", Journal of Clinical Ultrasound, 9:365-375 (Sep. 1981).
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