Experience with a dynamic inexpensive video‐conferencing system for frozen section telepathology

摘要: Aim: To evaluate the feasibility of an inexpensive, generally applicable video‐conferencing system for frozen section telepathology (TP). Methods: A commercially widely available PC‐based dynamic (PictureTel LIVE, model PCS 100) has been evaluated, using two, four and six ISDN channels (128–384 kilobits per second (kbs)) bandwidths. 129 sections have analyzed which were classified by TP as benign, uncertain (the remark probably or malignant was allowed), malignant, not acceptable image quality. The results compared with original diagnosis final paraffin diagnosis. Results: Only 384 kbs (3 ISDN‐2 lines) resulted in speed quality microscope images, synchronous image/speech transfer. In one cases (0.7%), acceptable, leaving 128 analysis. Five these TP, also deferred procedure (FS). One more benign three FS TP. Three additional FS, but according to (in agreement diagnosis). case, Thus, test efficiency (i.e., complete agreement) 120/128 (93.8%, Kappa = 0.88) between Sensitivity 93.5%, specificity 98.6%, positive negative predictive values 97.7% 96.0%. Between even higher. More importantly, there a single discrepancy benign‐malignant. Moreover, clear learning effect: 5 8 FS/TP discrepancies occurred first 42 (5/42=11.9%), remaining 3 following 86 (3/86=3.5%). Discussion: are encouraging. However, evaluation is time‐consuming (5–15 min case instead 2–4 although went up experience) tiring. technical drawbacks: no possibility point at objects areas interest life other end, resolution (rarely) may become suboptimal (blocky), storage images evaluated (which essential legal reasons) easy direct control remote motorized microscope. Yet, all users about both personal contact video‐conferencing. Conclusion: With relatively simple videoconferencing system, accurate can be obtained without false results, limited number will accepted.