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A computer-based training system for breast fine needle aspiration cytology
Department of Genetics and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala, Sweden.
Linköpings universitet, Hälsouniversitetet. Linköpings universitet, Institutionen för klinisk och experimentell medicin, Cellbiologi.
Näslund, J., Department of Clinical Neuroscience, Occupational Therapy, and Elderly Care Research (NEUROTEC), Section for Geriatrics, Karolinska Institute, Huddinge, Sweden.
Linköpings universitet, Hälsouniversitetet. Linköpings universitet, Institutionen för klinisk och experimentell medicin, Molekylär och immunologisk patologi.
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2002 (Engelska)Ingår i: Journal of Pathology, ISSN 0022-3417, E-ISSN 1096-9896, Vol. 196, nr 1, s. 113-121Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Fine-needle aspiration (FNA) cytology is a rapid and inexpensive technique used extensively in the diagnosis of breast disease. To remove diagnostic subjectivity, a diagnostic decision support system (DDSS) called CytoInform© has been developed, based on a Bayesian belief network (BBN) for the diagnosis of breast FNAs. In addition to acting as a DDSS, the system implements a computer-based training (CBT) system, providing a novel approach to breast cytology training. The system guides the trainee cytopathologist through the diagnostic process, allowing the user to grade each diagnostic feature using a set of on-screen reference images as visual clues. The trainee positions a slider on a spectrum relative to these images, reflecting the similarity between the reference image and the microscope image. From this, an evidence vector is generated, allowing the current diagnostic probability to be updated by the BBN. As the trainee assesses each clue, the evidence entered is compared with that of the expert through the use of a defined teaching file. This file records the relative severity of each clue and a tolerance band within which the trainee must position the slider. When all clues in the teaching case have been completed, the system informs the user of inaccuracies and offers the ability to reassess problematic features. In trials with two pathologists of different experience and a series of ten cases, the system provided an effective tool in conveying diagnostic evidence and protocols to trainees. This is evident from the fact that each pathologist only misinterpreted one case and a total of 86%/88% (experienced/inexperienced) of all clues assessed were interpreted correctly. Significantly, in all cases that produced the correct final diagnostic probability, the route taken to that solution was consistent with the expert's solution. Copyright © 2001 John Wiley & Sons, Ltd.

Ort, förlag, år, upplaga, sidor
2002. Vol. 196, nr 1, s. 113-121
Nyckelord [en]
Bayesian networks, Breast FNA, Computer-based training, Decision support, Knowledge management
Nationell ämneskategori
Medicin och hälsovetenskap
Identifikatorer
URN: urn:nbn:se:liu:diva-47120DOI: 10.1002/path.1012OAI: oai:DiVA.org:liu-47120DiVA, id: diva2:268016
Tillgänglig från: 2009-10-11 Skapad: 2009-10-11 Senast uppdaterad: 2017-12-13

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Westermark, GunillaHäggqvist, Bo

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