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Related Experiment Video

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An Assessment Method and Toolkit to Evaluate Keyboard Design on Smartphones
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Evaluation of user input methods for manipulating a tablet personal computer in sterile techniques.

Akira Yamada1, Daisuke Komatsu2, Takeshi Suzuki2

  • 1Department of Radiology, Shinshu University School of Medicine, 3-1-1 Asahi, Matsumoto, Nagano, 390-8621, Japan. a_yamada@shinshu-u.ac.jp.

International Journal of Computer Assisted Radiology and Surgery
|August 31, 2016
PubMed
Summary

A digitizer stylus with a sterile ultrasound probe cover offers a quick and accurate method for tablet PC manipulation in sterile environments, avoiding central processing unit (CPU) load.

Keywords:
Digitizer stylusSterile techniqueTablet personal computerUltrasound probe coverUser input method

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Area of Science:

  • Medical Technology
  • Human-Computer Interaction
  • Sterile Techniques

Background:

  • Tablet personal computers (PCs) are increasingly used in sterile environments.
  • Efficient and accurate manipulation methods are crucial for sterile techniques.
  • Existing methods may impact device performance and sterility.

Purpose of the Study:

  • To identify a rapid and precise user input method for tablet PCs within sterile procedures.
  • To evaluate different manipulation techniques for their impact on central processing unit (CPU) performance, manipulation accuracy, and contactlessness.

Main Methods:

  • Evaluated three input methods: computer mouse with sterile drape, fingers with sterile drape, and digitizer stylus with sterile ultrasound probe cover.
  • Assessed central processing unit (CPU) performance, manipulation speed (image selection and point measurement), and contactlessness.
  • Measured adenosine triphosphate (ATP) levels to assess microbial contamination.

Main Results:

  • Using a sterile system drape significantly decreased CPU performance and increased CPU temperature.
  • The digitizer stylus method demonstrated significantly faster image selection and point measurement times compared to the mouse and finger methods.
  • The finger method showed a lower success rate for small target selection and no significant difference in ATP levels was observed with the digitizer stylus method.

Conclusions:

  • A digitizer stylus combined with a sterile ultrasound probe cover provides an effective, contactless method for tablet PC manipulation in sterile settings.
  • This method ensures quick and accurate interaction without compromising device performance or sterility.
  • It offers a viable solution for integrating tablet PCs into sterile medical procedures.