Vliv poruch sondy sonografu na kvalitativní parametry ultrazvukového B-obrazu
Authors:
Jaromír Vachutka 1; Ladislav Doležal 1,2
Authors place of work:
Ústav lékařské biofyziky, Lékařská fakulta, Univerzita Palackého v Olomouci, ČR
1; Laboratoř pro výzkum medicínských aplikací ultrazvuku, Univerzita Palackého v Olomouci, ČR
2
Published in the journal:
Lékař a technika - Clinician and Technology No. 4, 2012, 42, 11-17
Summary
The proper function of the ultrasound imaging system is the basic precondition for the obtaining of high quality diagnostic information. Ultrasound probe is one of the most important parts of the ultrasound imaging system. However, the incidence of defective ultrasound probes is relatively high. The common transducer errors are delamination, break in the cable and weak or dead elements. These defects result in gradual changes of the ultrasound image, which can be difficult to detect during normal operation. Our effort is to find out how a given probe failure affects the quality of diagnostic information. The aim of this work is to describe the effect of exactly defined probe failure on the quality parameters of ultrasound B-mode image. The probe failures were simulated using ultrasound imaging system Sonix RP. The software of this device enables to turn off the elements in the probe. The quality parameters of ultrasound B-mode images were measured using Precision Multi-Purpose Gray Scale Test instrument Gammex RMI 403GS LE. We scanned this phantom with faultless and defected linear probe (1–20 dead elements). We evaluated axial resolution, lateral resolution, accuracy of vertical distance measurements and image uniformity in the stored B-mode images of the phantom.
Keywords:
ultrasound, B-mode, probe failure, image quality
Zdroje
[1] Mårtensson, M. et al. High Incidence of Defective Ultrasound Transducers in Use in Routine Clinical Practice. European Journal of Echocardiography, 2009, vol. 10, no. 3, p. 389-394.
[2] Sipilä, O., Mannila, V., Vartiainen, E. Quality Assurance in Diagnostic Ultrasound. European Journal of Radiology, 2011, vol. 80, no. 2, p. 519-525.
[3] Hrazdira, I., Hlinomazová, Z. Úskalí současné ultrasonografie. Česká radiologie, 2006, vol. 60, no. 4, p. 223-227.
[4] Thijssen, JM., Weijers, G., de Korte, CL. Objective Performance Testing and Quality Assurance of Medical Ultrasound Equipment. Ultrasound in Medicine and Biology, 2007, vol. 33, no. 3, p. 460-471.
[5] Thijssen, JM., van Wijk, MC., Cuypers MHM. Performance Testing of Medical Echo/Doppler Equipment. European Journal of Ultrasound, 2002, vol. 15, no. 3, p. 151-164.
[6] Gibson, NM., Dudley, NJ., Griffith, K. A Computerised Quality Control Testing System for B-mode Ultrasound. Ultrasound in Medicine and Biology, 2001, vol. 27, no. 12, p. 1697-1711.
[7] Dudley, NJ. et al. A Review of Two Alternative Ultrasound Quality Assurance Programmes. European Journal of Ultrasound, 2001, vol. 12, no. 3, p. 233-245.
[8] Doležal, L., Kollmann, C. Patient - Ultrasound Interaction: latest developments and efforts in medical ultrasound safety topics and bio-effects research. 1st ed. Olomouc: Palacký University Olomouc, 2010, 173 s. ISBN 978-80-244-2656-3.
[9] Sperrin, MW., Mutch, S. The Assessment of a Doppler Ultrasound Phantom with an Aim to Establish a Routine Quality Assurance Programme. European Journal of Ultrasound, 1996, vol. 4, no. 1, p. 63-67.
[10] Weigang, B. et al. The Methods and Effects of Transducer Degradation on Image Quality and the Clinical Efficacy of Diagnostic Sonography. Journal of Diagnostic Medical Sonography, 2003, vol. 19, no. 1, p. 3-13.
Štítky
BiomedicineČlánok vyšiel v časopise
The Clinician and Technology Journal
2012 Číslo 4
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