Objective Through the measurement of laryngeal motion,the target volume of laryngeal expansion was further accurately delineated,so as to achieve precise radiotherapy and improve the radiotherapy effect.Methods A total of 51 tumor patients were selected as the research objects.The maximum motion of larynx in four directions was measured by CT and the experimental data were statistically analyzed by SPSS23.0.Results The average maximum movement range of the 51 subjects was(13.04±6.72)mm upward,(1.53±2.41)mm downward,(1.44±1.74)mm leftward,(1.35±2.27)mm rightward,(3.81±2.74)mm forward and(0.75±1.59)mm backward,The maximum outward displacement of the left thyroid cartilage plate was(0.70±1.21)mm,the maximum inward displacement of the left thyroid cartilage plate was(1.86±2.85)mm,the maximum outward displacement of the right thyroid cartilage plate was(0.70±1.35)mm,the maximum inward displacement of the right thyroid cartilage plate was(1.42±1.71)mm,the maximum distance between the anterior angles of the dipper was(14.15±3.51)mm,the left and right measurement errors were(1.46±1.32)mm,and the front and rear measurement errors were(2.72±1.92)mm.The upper and lower positioning errors are(0.26±0.19),the front and rear positioning errors are(0.29±0.22),and the left and right positioning errors are(0.39±0.27).There was no significant difference in laryngeal activity between subjects＜60 years old and those＞60 years old(P＞0.05).The maximum distance between male and female anterior angles was(15.32±4.72)mm,which was significantly higher than that of female(12.14±1.61)mm(P＜0.05).The maximum inward displacement of the left thyroid cartilage plate of the metastatic subjects was(2.36±1.19)mm,which was significantly higher than that of the non metastatic subjects(1.19±1.73)mm,with specific statistical significance(P＜0.05).Gender was negatively correlated with the maximum range of anterior commissure upward movement and the maximum distance between anterior angles of arytenoids(P＜0.05),and positively correlated with the maximum outward movement of left thyroid cartilage plate(P＜0.05);Age was positively correlated with the maximum upward movement range of anterior commissure(P＜0.05),and negatively correlated with the maximum downward movement range of anterior commissure,the maximum outward movement of left thyroid cartilage plate,and the measurement error before and after(P＜0.05).Pearson correlation analysis found that there was a significant positive correlation between the right left movement of the anterior syndesmosis of thyroid cartilage and the maximum outward movement of the right left thyroid cartilage plate(r=0.301,P=0.032);There was a significant positive correlation between the right movement of the anterior syndesmosis of the thyroid cartilage plate and the maximum outward movement of the right thyroid cartilage plate(r=0.072,P=0.000).Condusion Natural swallowing causes laryngeal movement,the specific extent of which should be noted in tumor radiotherapy.
NETL
NSTL
万方数据
维普
