Derivation of sonograph quality parameters by the use of point spread function analysis

被引：3
|
作者：
Dolezal, L. [1 ]
Mazura, J. [1 ]
Tesarik, J. [1 ]
Kolarova, H. [1 ]
Korpas, D. [1 ]
Binder, S. [1 ]
Halek, J. [1 ]
机构：
[1] Palacky Univ, Fac Med, Inst Med Biophys, CR-77147 Olomouc, Czech Republic
来源：
PHYSIOLOGICAL RESEARCH | 2007年 / 56卷
关键词：
ultrasonography; point spread function; quality; imaging;
D O I：
10.33549/physiolres.931304
中图分类号：
Q4 [生理学];
学科分类号：
071003 ;
摘要：
A measuring system evaluating a Point Spread Function generated in an ultrasonographic image by scanning a spherical target was developed. The target is moved in measuring bath filled by water over scanned volume via 3D computer controlled positioning system. A video signal obtained is converted to digital form and analyzed by original software to derive various objective parameters of the imager as follows: Focal areas in both the azimuth and the elevation directions, Ultrasound scanning lines visualisation, Manufacturer preloaded TGC, Width of the scanning plane, Side lobe levels and Amplification uniformity in the azimuth direction. The method was verified by testing 18 different equipments in 282 measurements. Samples of particular measurement results in form of graphical outputs are included. Medical and physiological impacts of this approach are discussed.
引用
收藏
页码：S69 / S76
页数：8
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