Generally in clinics diseases are diagnosed with their stages assessed by history taking, physical examination and investigations. This requires abundance of clinical knowledge, skills and experience. Difference in individual doctors' ability and in individual hospitals' condition makes it difficult to correctly diagnose and assess diseases and stages. For example many problems often arise in choosing indicators of symptoms, signs and investigatory findings, relationship between those indicators, their contribution rate to diagnosis and stage assessment, constant upgrade and correction of patients according to certain diseases, quantitative diagnosis and stage assessment ensuring objectivity and promptitude. Therefore in the age of knowledge driven economy, the usage of information technology is widely studied to rapidly and correctly diagnose and assess diseases and stages by using less indicators without secondary burden to patients.
Recently developed esophageal carcinoma's surgical indication system enables not only doctors but patients to judge their surgical indication of esophageal carcinoma by inputting their symptoms, signs and investigatory findings on computer, which leads to continual scientific management of hypertension.
Having chosen optic indicators useful for the surgical indication judgment through statistical test, Department of medical informatics Pyongyang Medical College of
This computer aided judgment system consists of modules for inputting patient's data, diagnosis, process and displaying treatment.
Data input module has indicators useful for Judgeme of surgical indication of esophageal carcinoma as well as general indicators. Here patients' basic data is inputted. Inputted according to items, qualitative indicators are automatically quantitated and quantitative indicators undergo operation.
The indicators useful for Judgeme of surgical indication of esophageal carcinoma were scientifically taken by t-test and χ2-test.
As a result of χ2-test, gender, hospitalized days, job, smoking, irritating diet, dysphagia, sense of foreign body, weight loss, metastasis to spleen and blood type were proven to be significantly useful. Alcohol, cervical lymph node enlargement, statis were proven to be markedly useful.
As a result of t-test, red blood cell count, ZTT, KCl and ESR were proven to be significantly useful.
The diagnosis and process module displays diagnosis by discrimination of a sign of values given from the mathematical model equation into which inputted data are applied. Mathematical model equation was determined by quantification and distriminant analysis method.
The treatment display module makes it possible to constantly and scientifically manage the esophageal carcinoma referring to the strategy according to the stage.
92.8% of esophageal carcinoma patients (72) were correctly diagnosed by computer aided system for judging surgical indication of esophageal carcinoma.
We are going to positively introduce this system into clinics to assess its efficacy and to actively conduct the academic interchange and collaboration of bionics and thoracic surgery.
