Economically affordable anatomical kidney phantom with calyxes for puncture and drainage training in interventional urology and radiology

Acta Radiologica Short Reports

Asko Ristolainen³  Peeter Ross¹  Juri Gavšin³  Eero Semjonov²  Maarja Kruusmaa³ 

[1] Institute of Clinical Medicine, Chair of Health Care Technology, Tallinn University of Technology, Tallinn, Estonia

[2] Centre of Pathology, East Tallinn Central Hospital, Tallinn, Estonia

[3] Centre for Biorobotics, Faculty of Information Technology, Tallinn University of Technology, Tallinn, Estonia

关键词: training;    patient-specific anatomy;    nephrostomy;    ultrasound;    Phantom;   

Others  :  923897
DOI  :  10.1177/2047981614534231

 received in 2013-10-14, accepted in 2014-04-12,  发布年份 2014

【 摘 要 】

Background Trends in interventional radiology and urology training are orientated towards reducing costs and increasing efficiency.In order to comply with the trends, we propose training on inexpensive patient-specific kidney phantoms.

Purpose To develop a new kidney phantom for puncture and drainage training in interventional urology and radiology, and to evaluatetheir anatomical correctness and suitability for training compared to the traditional way of training on home-made phantoms.

Material and Methods A case study for validation of kidney phantoms was conducted with nine radiology students divided into two groups: one trainedon standard home-made training phantom (n = 4) and the other on our kidney phantoms (n = 5). Another test phantom was used to evaluate the effectiveness of the training of the two groups. The tests were videorecorded and analyzed. Duration of the procedure was used as the primary indicator of procedure’s quality. Comparison testswere also conducted with professional radiologists. Anatomical correctness of the kidney phantom was evaluated by comparingthe post mortem kidney scans with reconstructed models from CT scans. Subjective feedback was also collected from the participants.Wider use of kidney phantoms was analyzed.

Results The average volumetric difference between post mortem kidney scans and reconstructed CT kidney models was 4.70 ± 3.25%. Allfive students practicing on the kidney phantom improved their performance and the results were almost equal to the resultsof the professional radiologist while in the other group two students out of four trained on standard home-made training phantomsfailed to improve their performance. However, the small number of test subjects prevents us from drawing general conclusionsabout the efficiency of the new practice. The kidney phantoms were found usable also for nephrostomy catheter placement trainingunder fluoroscopy.

Conclusion The feedback from radiologists showed that the anatomically correct features of the phantom is an added value for the trainingand has a potential to increase the quality of minimally invasive procedures in general.

【 授权许可】

   
© The Foundation Acta Radiologica 2014 Reprints and permissions: sagepub.co.uk/journalsPermissions.nav

【 图 表 】

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【 参考文献 】

• [1]Sabharwal T, Fotiadis N, Adam A . Modern trends in interventional radiology. Br Med Bull 2007; 81–82: 167–182.
• [2]Mendiratta-Lala M, Williams T, de Quadros N, et al . The use of a simulation center to improve resident proficiency in performing ultrasound-guided procedures. Acad Radiol 2010; 17: 535–540.
• [3]Rösch J, Keller FS, Kaufman J . The birth, early years, and future of interventional radiology. J Vasc Interv Radiol 2003; 14: 841–853.
• [4]Liberman L, Benton CL, Dershaw DD, et al . Learning curve for stereotactic breast biopsy: how many cases are enough? Am J Roentgenol 2001; 176: 721–727.
• [5]Harvey JA, Moran RE, Hamer MM, et al . Evaluation of a turkey-breast phantom for teaching freehand, US-guided core-needle breast biopsy. Acad Radiol 1997; 4: 565–569.
• [6]Hunt A, Ristolainen A, Ross P, et al . Low cost anatomically realistic renal biopsy phantoms for interventional radiology trainees. Eur J Radiol 2013; 82: 594–600.
• [7]Ristolainen A, Ross P. Anatomical kidney phantom with calyxes for drainage training in interventional radiology. Tallinn University of Technology; 2013. Eurpean Patent nr EP13165254. Submitted 24.04.2013.