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Detecting failed elements on phased array ultrasound transducers using the Edinburgh Pipe Phantom.

Dan Welsh1, Scott Inglis2, Stephen D Pye2

  • 1Department of Oncology Physics, Western General Hospital, Edinburgh, UK.

Ultrasound (Leeds, England)
|August 3, 2016
PubMed
Summary
This summary is machine-generated.

Failed elements in phased array ultrasound transducers can be detected using resolution integral measurements. This method, using the Edinburgh Pipe Phantom, offers a simple and inexpensive way to identify transducer faults.

Keywords:
Edinburgh Pipe PhantomQuality assurancecardiac imagingimage qualityphased-arrayresolution integral

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Area of Science:

  • Medical Imaging
  • Ultrasound Technology
  • Diagnostic Tools

Background:

  • Ultrasound transducer faults are common and impact diagnostic accuracy.
  • Traditional fault detection methods are less effective for phased array transducers used in cardiac imaging.
  • Phased array transducers require novel, reliable fault detection techniques.

Purpose of the Study:

  • To evaluate the resolution integral (R) measurement using the Edinburgh Pipe Phantom for detecting failed elements in phased array transducers.
  • To assess the efficacy of resolution integral measurements as a fault detection method for cardiac ultrasound probes.
  • To establish a straightforward and inexpensive test for phased array transducer integrity.

Main Methods:

  • A 128-element paediatric phased array transducer was utilized for the study.
  • Simulated element failure was achieved using polyvinyl chloride (PVC) tape as an attenuator of varying widths.
  • Resolution integral (R) measurements were performed across different attenuator widths.

Main Results:

  • Significant reductions in resolution integral (R) were observed with attenuator widths exceeding 0.5 mm.
  • Low contrast penetration measurements also showed significant reductions compared to baseline.
  • A statistically significant difference (p < 0.05) was noted for these measurements.

Conclusions:

  • Resolution integral (R) measurements can effectively detect failed elements in phased array transducers.
  • Low contrast penetration measurements offer a quick, simple, and versatile method for 'in-the-field' checks.
  • Both methods provide straightforward and inexpensive means for phased array transducer fault detection.