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The impact of defective ultrasound transducers on the evaluation results of ultrasound imaging of blood flow
KTH, School of Technology and Health (STH).
2010 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesisAlternative title
Effekter av defekta ultraljudsgivare på utvärderingsresultaten av ultraljudtester på blodflödet (Swedish)
Abstract [en]

Following X-Ray, Ultrasound is now the most common of all the medical imaging technologies specifically in obstetrics and cardiology. Plus that the ultrasound hazards perceived to be insignificant compared with X-rays. Considering the fact that the study of cardiovascular diseases, blood flow patterns and the fetal development is essential for human life, the accuracy and proper functioning of ultrasonic systems is of great importance. Hence quality control of ultrasonic transducers is necessary.

In this thesis, a system to standardize the acceptance criteria for quality control of ultrasonic transducers is described. On this ground a study on ultrasound images conducted to compare and evaluate the quality resulted from different types of transducers in different conditions, i.e. defective or functional.

A clinical study was also carried out to evaluate our hypothesis in real cases at department of Cardiology and department of genecology. Results from this study show that the perception of quality is somewhat subjective and clinical studies are time-consuming. But quality factors such as the ability to accurately identify anatomical structure and functional capabilities are of great importance and help.

Place, publisher, year, edition, pages
2010. , 76 p.
TRITA-STH, 2014: 83
Keyword [en]
Ultrasound, Doppler, Quality Assurance, Ultrasound Transducer, acceptance criteria, image quality, defective transducer, accurate diagnosis
Keyword [sv]
Ultraljud, Doppler, kvalitetsbedömning, kvalitetssäkring, transducer, acceptanskriterier, bildkvalite, defekt ultraljudsgivare, rätt diagnos, rätt behandling
National Category
Medical Engineering
URN: urn:nbn:se:kth:diva-154830OAI: diva2:758662
Subject / course
Medical Imaging
Educational program
Master of Science -Medical Imaging
Available from: 2014-11-18 Created: 2014-10-28 Last updated: 2014-11-18Bibliographically approved

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