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| The value of ultrasonic images texture analysis in differential diagnosis of parotid pleomorphic adenoma and adenolymphoma#br# |
| HAN Wen1， LI Weimin2， LING Li1， CHEN Wei1 |
(1. Department of Ultrasound, People′s Hospital of Suzhou National New Hitech Industrial, Suzhou Jiangsu 215129; 2. Department of Ultrasound, Affiliated Hospital of Jiangnan University, Wuxi Jiangsu 214000, China)
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Abstract Objective： To investigate the value of ultrasonic images texture analysis in differential diagnosis of parotid pleomorphic adenoma and adenolymphoma. Methods： A total of 43 parotid pleomorphic adenomas and 54 adenolymphomas were selected. The ultrasonic images were imported into Mazda 4.6 software and ROIs were manually drawed. The optimum texture parameters were selected through mutual information （MI), Fisher coefficient, probability of classification error and average correction coefficient （POE+ACC) and the combination of three methods （Fisher+POE+ACC+MI), respectively.The model of artificial neural network was built. The assessment results of texture analysis and ultrasonic doctors were compared with the pathology. And misdiagnostic rates were analyzed between texture analysis and ultrasonic doctors. Results： The age and proportion of male in patients with parotid adenolymphoma were higher than those with parotid pleomorphic adenoma,there were statistically difference (P<0.001). In ultrasonic features, there were statistical difference between cystic degeneration and blood flow in two groups （P<0.001 or P<0.05).Among the 30 groups of texture parameters extracted by Mazda, there were 8 groups with statistical differences (all P<0.05).The misdiagnostic rates of MI, POE+ ACC, Fisher and Fisher+POE+ ACC+MI were 53.61%（52/97）, 44.32%（43/97）, 21.65%（21/97）, 17.53%（17/97）, respectively. Furthermore， the misjudgment rate of the combination of three methods was lower than that of the ultrasound doctors（29.90%， 29/97）, there was statistical differences(χ2=4.103, P<0.05). Conclusion：Ultrasonic images texture analysis can be used to differentiate parotid pleomorphic adenoma and adenolymphoma.
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Received: 26 January 2022
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