Method for automatic detection of defective ultrasound linear array transducers based on uniformity assessment of clinical images - A case study

Lorentsson, Robert,1969Gothenburg University,Göteborgs universitet,Institutionen för kliniska vetenskaper,Institute of Clinical Sciences (författare)

The purpose of the present study was to test an idea of and describe a concept of a novel method of detecting defects related to horizontal nonuniformities in ultrasound equipment. The method is based on the analysis of ultrasound images collected directly from the clinical workflow. In total over 31000 images from three ultrasound scanners from two vendors were collected retrospectively from a database. An algorithm was developed and applied to the images, 150 at a time, for detection of systematic dark regions in the superficial part of the images. The result was compared with electrical measurements (FirstCall) of the transducers, performed at times when the transducers were known to be defective. The algorithm made similar detection of horizontal nonuniformities for images acquired at different time points over long periods of time. The results showed good subjective visual agreement with the available electrical measurements of the defective transducers, indicating a potential use of clinical images for early and automatic detection of defective transducers, as a complement to quality control.

MEDICIN OCH HÄLSOVETENSKAP Klinisk medicin Radiologi och bildbehandling hsv//swe
MEDICAL AND HEALTH SCIENCES Clinical Medicine Radiology, Nuclear Medicine and Medical Imaging hsv//eng
transducer
ultrasound
uniformity
b-mode ultrasound
quality-control
assurance
phantom
parameters
systems
Radiology
Nuclear Medicine & Medical Imaging

Hosseini, N. (författare)
Johansson, J. O. (författare)
Rosenberg, W. (författare)
Stenborg, B. (författare)
Månsson, Lars Gunnar,1951Gothenburg University,Göteborgs universitet,Institutionen för kliniska vetenskaper,Institute of Clinical Sciences(Swepub:gu)xmanla (författare)
Båth, Magnus,1974Gothenburg University,Göteborgs universitet,Institutionen för kliniska vetenskaper,Institute of Clinical Sciences(Swepub:gu)xbatma (författare)
Göteborgs universitetInstitutionen för kliniska vetenskaper (creator_code:org_t)

Ingår i:Journal of Applied Clinical Medical Physics: Wiley19:2, s. 265-2741526-9914

Av författaren/redakt...: Lorentsson, Robe ...; Hosseini, N.; Johansson, J. O.; Rosenberg, W.; Stenborg, B.; Månsson, Lars Gu ...; visa fler...; Båth, Magnus, 19 ...; visa färre...

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