Ultrasonic Three-dimensional Reconstruction And Its Diagnostic Value In The Larynx

Objective:By three-dimensional ultrasound imaging of the larynx, compared with the two-dimensional ultrasound and conventional CT of laryngeal cancer diagnostic value.Methods:Ultrasound scans of67volunteers, three-dimensional reconstruction, and to evaluate the image quality by U.S. physicians, CT physician and ENT surgeons according to their respective predetermined standard. Evaluation of three general practitioners test the consistency of the results. The value of the thyroid cartilage with the conventional CT reconstruction, the results were compared with three-dimensional ultrasound measurement.72cases of laryngeal cancer patients, ultrasound scan of the neck and throat dimensional and three-dimensional imaging of tumors do three-dimensional imaging and gray transparent color Doppler flow. The three-dimensional reconstruction of ultrasound images and two-dimensional image contrast, and compared with surgical findings contrast two-dimensional ultrasound and conventional CT, the tumor T stage, N stage accuracy, while the two-dimensional ultrasound and three-dimensional ultrasound to distinguish the extent of tumor invasion the results were compared. Color Doppler blood flow three-dimensional reconstruction measured tumor vascular index (VI) and laryngeal pathology N phases the correlation analysis, the clinical application of a wider ROC curves were statistically analyzed,2-of DUS scanning cervical lymph node metastasis identified with the ROC curve to determine the projections of VI and histologic findings and analysis of the specificity and sensitivity.Results:Ultrasound professionals and CT General Practitioners, the ENT doctor, Kappa values were0.856,0.814,0.823that different evaluators image can be observed, consensus. The first level and second level of the image, three general practitioners, were93.1%,92.6%and91.3%.3D ultrasound and CT measurement data of the thyroid cartilage and cricoid cartilage was no significant difference. Description of three-dimensional ultrasound and CT are the same high quality images. Two-dimensional ultrasound and conventional CT staging of tumor N There were significant differences indicate that the accuracy of ultrasound in the diagnosis of lymph node metastasis than CT has an advantage. Compared surgical results,2d and3d ultrasound scan rate violations around the throat of patients with laryngeal cancer was no significant difference.3-than2-dus dus can display more violations of parts. Of tumor N stage and vascular index, a correlation analysis results show that both the correlation coefficient was0.726(P<0.001), which shows good correlation between a positive correlation. The area under the ROC curve of0.902, which means that the VI has a higher accuracy of prediction of cervical lymph node metastasis. ROC analysis showed that the most about board index0.684,4.4602of its corresponding value of VI, this is the best threshold. VI values to predict lymph node metastasis in two-dimensional ultrasound diagnosis of a significant difference (p=1.000), the former than the latter low specificity (p=0.028), but its sensitivity is higher than the latter (p=0.023).Conclusion:Ultrasonic three-dimensional reconstruction images can be obtained the recognition of three general practitioners and better observe and measure the feasibility of three-dimensional ultrasound in laryngeal cancer T, N staging of diagnosis, the application of the tumor vascular index in tumor N staging lymph node metastasisforecast in the significance of three-dimensional ultrasound and CT, MRI is equally important laryngeal imaging method and each director.