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Frontiers of Medicine

ISSN 2095-0217

ISSN 2095-0225(Online)

CN 11-5983/R

Postal Subscription Code 80-967

2018 Impact Factor: 1.847

Front. Med.    2020, Vol. 14 Issue (4) : 488-497    https://doi.org/10.1007/s11684-020-0762-0
RESEARCH ARTICLE
Development of an artificial intelligence diagnostic model based on dynamic uncertain causality graph for the differential diagnosis of dyspnea
Yang Jiao1(), Zhan Zhang2, Ting Zhang3, Wen Shi4, Yan Zhu5, Jie Hu6, Qin Zhang7()
1. Department of General Internal Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730, China
2. Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China
3. Department of Pulmonary and Critical Care Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730, China
4. Department of Gastroenterology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730, China
5. Institute of Internet Industry, Tsinghua University, Beijing 100084, China
6. Department of Medical Administration, Suining Central Hospital, Suining 629000, China
7. Department of Computer Science and Technology, Tsinghua University, Beijing 100084, China
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Abstract

Dyspnea is one of the most common manifestations of patients with pulmonary disease, myocardial dysfunction, and neuromuscular disorder, among other conditions. Identifying the causes of dyspnea in clinical practice, especially for the general practitioner, remains a challenge. This pilot study aimed to develop a computer-aided tool for improving the efficiency of differential diagnosis. The disease set with dyspnea as the chief complaint was established on the basis of clinical experience and epidemiological data. Differential diagnosis approaches were established and optimized by clinical experts. The artificial intelligence (AI) diagnosis model was constructed according to the dynamic uncertain causality graph knowledge-based editor. Twenty-eight diseases and syndromes were included in the disease set. The model contained 132 variables of symptoms, signs, and serological and imaging parameters. Medical records from the electronic hospital records of Suining Central Hospital were randomly selected. A total of 202 discharged patients with dyspnea as the chief complaint were included for verification, in which the diagnoses of 195 cases were coincident with the record certified as correct. The overall diagnostic accuracy rate of the model was 96.5%. In conclusion, the diagnostic accuracy of the AI model is promising and may compensate for the limitation of medical experience.

Keywords knowledge representation      uncertain      causality      graphical model      artificial intelligence      diagnosis      dyspnea     
Corresponding Author(s): Yang Jiao,Qin Zhang   
Just Accepted Date: 13 May 2020   Online First Date: 16 July 2020    Issue Date: 26 August 2020
 Cite this article:   
Yang Jiao,Zhan Zhang,Ting Zhang, et al. Development of an artificial intelligence diagnostic model based on dynamic uncertain causality graph for the differential diagnosis of dyspnea[J]. Front. Med., 2020, 14(4): 488-497.
 URL:  
https://academic.hep.com.cn/fmd/EN/10.1007/s11684-020-0762-0
https://academic.hep.com.cn/fmd/EN/Y2020/V14/I4/488
Type Symbol Medical meaning
Bi The B-type variable indicates a disease
Xi The X-type variable can represent (1) risk factors, such as smoking and alcoholism; and (2) clinical indications, such as symptoms, physical signs, laboratory examination, and imaging information
BXi The BX-type variable stands for a disease affected by risk factors
SXi The SX-type variable indicates some laboratory examinations or imaging information through which the disease can be diagnosed directly
Gi The G-type variable is used to express the logical relationship of clinical indications
RGi The RG-type variable is used to express the effect of combinations of clinical indications on diseases
SGi The SG-type variable is a special logic gate. It is only used to express the logical relationships between risk factors and diseases
Di The D-type variable represents the default input indicating the unknown cause
Fi The F-type variable indicates the causal relationship intensity between two clinical indications
Conditional Fi The function of the conditional F-type variable is the same as the F-type variable but with an observable validation condition; if the condition is true, then the variable functions, and vice versa
SAi The SA-type variable is used to represent the influence of risk factors on the probability of disease onset
Conditional SAi The function of conditional SA-type variable is the same as the SA-type variable but with an observable validation condition
Tab.1  Functions of variables in DUCG
Fig.1  Example of a dynamic uncertain causality graph.
B-type variable Description B-type variable Description
B1 Carbon monoxide poisoning B15 Pericardial effusion
B2 Metabolic acidosis B16 Hemochromatosis
B3 HCM B17 End-stage tumor
B4 Pulmonary infection B18 COPD
B5 PAH B19 Laryngospasm
B6 Interstitial lung disease B20 Foreign body in air passage
B7 Pulmonary alveolar proteinosis B21 Obesity
B8 PE B22 Scoliosis
B9 Heart failure B23 Pleural effusion
B10 HPS B24 Asthma
B11 DCM B25 Bronchitis
B12 Anaemia B26 Guillain-Barre syndrome
B13 Renal failure B27 Myasthenia gravis
B14 Constrictive pericarditis B28 Psychology
Tab.2  Diseases causing dyspnea in the DUCG knowledge base
Fig.2  DUCG subgraph example of chronic obstructive pulmonary disease.
Fig.3  Knowledge graph of the AI diagnostic model of dyspnea database.
Variable Disease Total cases in hospital Randomly selected and tested cases Correct diagnoses Diagnostic accuracy
B1 Carbon monoxide poisoning 58 10 10 100%
B2 Metabolic acidosis 9 9 9 100%
B3 HCM 10 10 9 90%
B4 Pulmonary infection 10 10 9 90%
B5 PAH 559 10 10 100%
B6 Interstitial lung disease 296 10 10 100%
B7 Pulmonary alveolar proteinosis 1 1 1 100%
B8 PE 101 10 10 100%
B9 Heart failure 429 10 9 90%
B10 HPS 0 0 0 0
B11 DCM 151 10 9 90%
B12 Anemia 3871 10 10 100%
B13 Renal failure 1099 10 10 100%
B14 Constrictive pericarditis 7 7 7 100%
B15 Pericardial effusion 300 10 10 100%
B16 Hemochromatosis 0 0 0 0
B17 End-stage tumor 9 9 9 100%
B18 COPD 13 900 10 10 100%
B19 Laryngospasm 0 0 0 0
B20 Foreign body in air passage 40 10 10 100%
B21 Obesity 5 5 5 100%
B22 Scoliosis 9 9 9 100%
B23 Pleural effusion 1469 10 10 100%
B24 Asthma 2294 10 8 80%
B25 Bronchitis 1330 10 9 90%
B26 Guillain-Barre syndrome 0 0 0 0
B27 Myasthenia gravis 2 2 2 100%
B28 Psychology 0 0 0 0
Total 25 959 202 195 96.53%
Tab.3  Example of a COPD patient’s test result
Fig.4  Sorted diagnoses by DUCG for a test case, according to hkj s. Abbreviation: PE, pulmonary embolism; PAH, pulmonary artery hypertension; COPD, chronic obstructive pulmonary disease; HCM, hypertrophic cardiomyopathy.
Fig.5  Graph of the causal relationship between the diagnosis heart failure (ranking the first in Fig. 4) and its evidence.
Fig.6  Graph of the causal relationship between the disease pericardial effusion (ranking second in Fig. 4) and its evidence, in which two isolated abnormal symptoms cannot be explained by the disease.
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