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Paper Information

Journal:   ANNALS OF MILITARY AND HEALTH SCIENCES RESEARCH   Spring 2004 , Volume 2 , Number 1 (Serial Number 5); Page(s) 261 To 267.
 
Paper: 

A QUALITY CONTROL TESTING SYSTEM FOR REAL TIME DIAGNOSTIC ULTRASOUND

 
 
Author(s):  MOKHTARI DIZAJI M.*, SHARAFI A.A., MANTEGHI F., KHOODAPARAST N.
 
* Department of Medical Physics, Tarbiat Modarres University
 
Abstract: 

Background: Current methods of ultrasound (US) imaging quality control involve an observer taking a series of measurements on test object images.

Materials and Methods: This process is rapidly becoming more so as the complexity of US scanners increases. We have designed and made a suite of programs to analyze captured US images to estimate a number of performance parameters, including dead zone, axial and lateral markers, axial and lateral resolution, focusing number, uniformity, and sensitivity in real time B-mode scanners. For checking caliper accuracy and other parameters in real time B-mode ultrasound, ultrasound propagation velocity in test object must be equal ultrasound propagation velocity in soft tissue. This is clearly that if ultrasound propagation velocity differs from scanner calibration velocity, its effect on other measurements such as resolution is well known. Therefore, We have used from salt-water, ethylene alcohol, ethylene glycol and tissue mimicking materials, and their velocities were compared and measured.

Results: Images of rods were digitally captured and analyzed to obtain US performance parameters at each depth. In the current study, test object and its protocol were designed and proposed to quantitatively determine diagnostic ultrasound parameters.

Conclusion: This is study, we have proposed Test object phantom with tissue mimicking materials for evaluation of ultrasound systems easily and performance able.

 

 
Keyword(s): CALIBRATION, PERFORMANCE PROTOCOL, TEST OBJECT, ULTRASOUND PROPAGATION VELOCITY, ULTRASOUND
 
References: 
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