Projects

Task Analysis Studies

Latest Task Analysis Studies – Posted September 2009

  • Ultrasound Guided Liver Biospy
  • Freehand Ultrasound Nephrostomy (renal collecting system puncture)

Development and Validation of a Virtual Reality Simulator for Training in Interventional Radiological Visceral Needle Puncture ProceduresThis section contains results from the IR task analysis studies that have been carried out by members of the CRaIVE consortium. More details can be found in:

Johnson SJ, Healey AE, Evans JC, Murphy MG, Crawshaw M, Gould DA. Physical and cognitive task analysis in interventional radiology. Journal of Clinical Radiology (2005): Volume 61, Issue 1 , January 2006, Pages 97-103

  • Arterial Puncture
  • Biopsy, CT guided
  • Right Sided Percutaneous Transhepatic Cholangiogram (PTC) (biliary tree puncture)
  • Biopsy, Freehand, ultrasound guided
  • Freehand Ultrasound Nephrostomy (renal collecting system puncture)
  • Venous Access – generic procedure

VR Simulator for Vascular IR

Physics-based virtual environment for training in vascular interventional radiological procedures

The aim of this project is to develop and validate a computer generated virtual environment (VE) with variable virtual anatomy, in which the appearance, ‘feel’ and human factors of invasive radiological procedures (interventional radiology, IR) in patients can be reproduced and assessed. The final product will encompass needle puncture as well as guidewire and catheter insertion and manipulation, and will be based on a task analysis of interventional procedures. We are developing methods of semi-automatically processing medical imaging data to create a variable range of 3D geometry of anatomy.

For ultimate fidelity, we will determine and localise the forces experienced by an operator during IR procedures in patients using miniature sensors, enabling the ‘feel’ of a real procedure to be accurately reproduced. This will allow us to simulate needle puncture, and introduction of a guidewire and catheter into a blood vessel, with realistic behaviour of tissue and vessels.
At the same time we will reproduce the feel of a pulse to guide instrumentation of an artery using a novel device which mimics a patient’s physiological pulse. Simulated ultrasound will also guide needle puncture of an artery, and fluoroscopy will be simulated for guidance of the guidewire and catheter as they are manipulated within an artery. Finally, we will validate the VE and assess its potential for training and certification. We will also make suggestions for inclusion in curricula and criteria for certification. The VE developed in this project will be generic, capable of incorporation into an existing system, or of forming the basis of a new generation of systems applicable to training.

This project started in November 2006 and is being funded by the EPSRC.

Collaborators: University of Liverpool, University of Hull, University of Wales Bangor, University of Leeds, Imperial College London, Manchester Business School.

VR Simulator for Visceral Needle Puncture

Development and Validation of a Virtual Reality Simulator for Training in Interventional Radiological Visceral Needle Puncture Procedures

This proposal’s aim is to develop and validate a virtual reality (VR) simulator for training visceral interventional radiology (IR) needle puncture procedures which use medical imaging and touch to guide needles. The skills required are currently learnt in an apprenticeship in patients: this is time consuming and inevitably associated with discomfort and occasionally, complications. We are using a computer to generate variable virtual environments (VE) from imaging data, with stereo, 3D visual presentation and devices conveying touch sensation (haptics) to realistically mimic procedures on patients. This VR training model will be based on a Task Analysis of procedures and will simulate accurately the forces encountered during IR procedures. It will be validated to confirm suitability for training and certification within existing curricula, and the Royal College of Radiologists’ (RCR) Integrated Training Initiative. The project end point of a pre-market, validated, authentic simulation of IR needle access procedures will remove this area of basic skills training from patients, improve safety and efficiency in the NHS and reduce the time to attain and maintain higher levels of competence.

This project started in November 2006 and is being funded by the Department of Health under the Health Technology Devices (HTD) Programme.

Collaborators: Medic Vision, University of Liverpool, University of Hull, University of Wales Bangor, University of Leeds, Imperial College London, Manchester Business School.

iTRIMS Project

Development of Test Items as a Basis for Interventional Radiology Simulation: the iTRIMS (international Task-analysis for Radiological Interventional Metrics for Simulation) Project

Certification of Interventional Radiology (IR) skills is currently based on the traditional apprenticeship model. Various external pressures are leading to a need to change this methodology both for training and certification. CIRSE, RSNA & SIR have formed separate task forces and a joint, international task force, to address clinical skills acquisition, and have established recommendations for the use of simulation which includes development of metrics for IR procedures. This project aims to develop metrics using a systems approach based on the Instructional Systems Design model. Analysis documents will be produced by the International Instructional Design Team (IIDT). The target procedures will be carotid, renal and iliac artery angioplasty and stent placement. The IIDT will create the analysis documents: the Procedure Description captures “best practice”; the Task Analysis is a detailed deconstruction of the procedure; Critical Performance Indicators will be identified and tracked; the identified tasks will be converted into Performance Objectives. The end result will be to create a common basis for training development, and will act as a basis for future studies of validation, and the production of standards documents.

This project is funded by

  • Society of Cardiovascular and interventional radiology, Foundation Grant Programme
  • British Society of Interventional Radiology, Research Bursary
  • Cordis, Europe

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