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Related Concept Videos

Leveling Equipment01:18

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As leveling involves measuring vertical distances relative to a horizontal line of sight, it requires a graduated rod, called a level rod, for vertical measurements and an instrument called a level for a horizontal sight line. A level includes a high-powered telescope with a mechanism for leveling to ensure the line of sight is horizontal when the bubble in the spirit level is centered. Leveling rods, made of wood, metal, or fiberglass, are graduated in feet or meters and commonly used in two-...
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Trial and Error and Algorithm01:12

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A problem-solving strategy is a plan of action used to find a solution. Different strategies have distinct action plans. Trial and error involves trying different solutions until one works. For instance, to fix a broken printer, you might check ink levels, ensure the paper tray isn't jammed, and verify the printer's connection to your laptop. This method can be time-consuming but is commonly used. Thomas Edison, for example, used trial and error to find a suitable filament for the light...
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Direct Method
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Related Experiment Video

Updated: Feb 13, 2026

Evaluating Targeting Accuracy in the Focal Plane for an Ultrasound-guided High-intensity Focused Ultrasound Phased-array System
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A new sampling algorithm demonstrates that ultrasound equipment cleanliness can be improved.

Greg S Whiteley1, Trevor O Glasbey2, Sue C Westerway3

  • 1Whiteley Corporation, North Sydney, Australia; Western Sydney University, School of Medicine, Sydney, NSW, Australia.

American Journal of Infection Control
|March 20, 2018
PubMed
Summary

A study found 26% of patient-ready ultrasound equipment in 5 facilities lacked cleanliness. A cleaning intervention significantly improved standards, showing adenosine triphosphate (ATP) testing is effective for monitoring probe cleanliness.

Keywords:
ATP testingCleaningCleanlinessDevice reprocessingReusable medical devicesUltrasound equipment

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Area of Science:

  • Healthcare-associated infections
  • Medical device reprocessing
  • Diagnostic imaging technology

Background:

  • Australian guidelines exist for cleaning reusable ultrasound probes and equipment.
  • This preliminary study assessed the cleanliness of patient-ready ultrasound equipment across five healthcare facilities in a major city.

Purpose of the Study:

  • To investigate the cleanliness standards of ultrasound equipment in clinical use.
  • To evaluate the effectiveness of adenosine triphosphate (ATP) testing as a quality assurance tool for equipment cleanliness.

Main Methods:

  • Adenosine triphosphate (ATP) testing with a sampling algorithm was used to assess surface cleanliness, measuring relative light units (RLUs).
  • Surfaces were tested for compliance with literature-recommended cleanliness levels (<100 RLUs).
  • A cleaning intervention step (CIS) using disposable wipes was performed, followed by retesting for ATP levels.

Main Results:

  • Out of 253 tested surfaces, 26% (66/253) showed inadequate cleanliness.
  • Following the cleaning intervention, over 91% (135/148) of surfaces demonstrated significant improvement in cleaning standards (P>.001).
  • For 6% (9/148) of surfaces, the cleaning intervention needed repeating to achieve target cleanliness (<25 RLUs).

Conclusions:

  • Adenosine triphosphate (ATP) testing serves as an effective, real-time quality assurance method for monitoring ultrasound probe and equipment cleanliness.
  • The study highlights the need for consistent adherence to cleaning protocols to ensure patient safety.