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Related Concept Videos

Assessment of the Rectum and Anus01:25

Assessment of the Rectum and Anus

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Evaluating the rectum and anus plays a crucial role in conducting a thorough physical examination of the gastrointestinal system. Although it may be uncomfortable and often embarrassing for the patient, it holds immense diagnostic value, particularly in detecting gastrointestinal diseases and abnormalities. This guide will explain how to perform this assessment using inspection and palpation methods.
Rectal Inspection
Begin by inspecting the perianal and anal areas for color, texture, rashes,...
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Augmented Reality System for Digital Rectal Examination Training and Assessment: System Validation.

Theerapat Muangpoon1, Reza Haghighi Osgouei1, David Escobar-Castillejos1

  • 1Faculty of Medicine, Department of Surgery and Cancer, Imperial College London, London, United Kingdom.

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|August 14, 2020
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Summary

This study introduces an augmented reality (AR) system to enhance the teaching of digital rectal examinations (DREs). The AR system provides crucial visualization of the examining finger and internal anatomy, improving training for medical students.

Keywords:
Augmented RealityDigital Rectal Examination (DRE)Magnetic TrackerMedical EducationPressure SensorUsability

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Area of Science:

  • Medical Education Technology
  • Augmented Reality in Healthcare
  • Surgical Simulation

Background:

  • Digital rectal examination (DRE) is challenging to teach due to limited practice opportunities and lack of direct visualization of internal anatomy.
  • Students and educators face difficulties in observing the palpating finger within the anal canal and prostate gland during DRE training.

Purpose of the Study:

  • To develop and evaluate an augmented reality (AR) system for DRE training, addressing the visualization gap.
  • The AR system aims to provide real-time visualization of the examining finger and internal organs using benchtop models.

Main Methods:

  • Implementation of an AR system using the Unity game engine and Microsoft HoloLens.
  • Tracking of finger movement via magnetic sensors and monitoring of applied pressure with a pressure sensor.
  • Evaluation involving 19 participants (clinicians and medical students) assessing system usefulness.

Main Results:

  • The AR system demonstrated real-time finger movement visualization at 60 fps with accurate model alignment (3.9 mm mean error).
  • Users reported realistic finger movement and found the visualization of the finger and internal organs highly useful for DRE teaching, learning, and assessment.
  • The system was particularly beneficial for novice learners.

Conclusions:

  • The developed AR system effectively enhances the teaching and learning of digital rectal examination skills through improved visualization.
  • Initial user feedback confirms the system's applicability and utility in medical training for DREs.