中华耳鼻咽喉头颈外科杂志
中華耳鼻嚥喉頭頸外科雜誌
중화이비인후두경외과잡지
Chinese Journal of Otorhinolaryngology Head and Neck Surgery
2015年
10期
805-809
,共5页
臧洪瑞%武骏%胡长龙%李立锋%刘迎曦%于申%周兵%韩德民
臧洪瑞%武駿%鬍長龍%李立鋒%劉迎晞%于申%週兵%韓德民
장홍서%무준%호장룡%리립봉%류영희%우신%주병%한덕민
上颌窦%计算机模拟%温度
上頜竇%計算機模擬%溫度
상합두%계산궤모의%온도
Maxillary sinus%Computer simulation%Temperature
目的 了解上颌窦内气流场和温度场与上颌窦窦口开放大小的关系,为临床手术量化上颌窦窦口开放范围提供参考意见.方法 选取1例健康成人女性螺旋CT影像资料,构建鼻腔及上颌窦的三维模型,采用计算流体力学方法,数值模拟研究上颌窦中气流和温度正常分布,了解上颌窦的生理功能;通过模拟上颌窦开放手术,研究随着窦口直径的变化(正常、8 mm、10 mm、12 mm和15 mm)上颌窦气流和温度的改变.结果 数值模拟发现,上颌窦内气流速度和变化低于鼻腔,上颌窦中的气流速度(平均速度0.062 m/s)远低于中鼻道(平均速度3.260 m/s);正常上颌窦中的平均温度是34.0℃,明显高于中鼻道内温度(28.7℃);随着窦口直径的增加,上颌窦温度与气流变化不明显.结论 通过数值模拟研究证实,上颌窦气流占鼻腔气流的比例很小,窦口的开放对窦内气流及鼻腔气流的影响很小.
目的 瞭解上頜竇內氣流場和溫度場與上頜竇竇口開放大小的關繫,為臨床手術量化上頜竇竇口開放範圍提供參攷意見.方法 選取1例健康成人女性螺鏇CT影像資料,構建鼻腔及上頜竇的三維模型,採用計算流體力學方法,數值模擬研究上頜竇中氣流和溫度正常分佈,瞭解上頜竇的生理功能;通過模擬上頜竇開放手術,研究隨著竇口直徑的變化(正常、8 mm、10 mm、12 mm和15 mm)上頜竇氣流和溫度的改變.結果 數值模擬髮現,上頜竇內氣流速度和變化低于鼻腔,上頜竇中的氣流速度(平均速度0.062 m/s)遠低于中鼻道(平均速度3.260 m/s);正常上頜竇中的平均溫度是34.0℃,明顯高于中鼻道內溫度(28.7℃);隨著竇口直徑的增加,上頜竇溫度與氣流變化不明顯.結論 通過數值模擬研究證實,上頜竇氣流佔鼻腔氣流的比例很小,竇口的開放對竇內氣流及鼻腔氣流的影響很小.
목적 료해상합두내기류장화온도장여상합두두구개방대소적관계,위림상수술양화상합두두구개방범위제공삼고의견.방법 선취1례건강성인녀성라선CT영상자료,구건비강급상합두적삼유모형,채용계산류체역학방법,수치모의연구상합두중기류화온도정상분포,료해상합두적생리공능;통과모의상합두개방수술,연구수착두구직경적변화(정상、8 mm、10 mm、12 mm화15 mm)상합두기류화온도적개변.결과 수치모의발현,상합두내기류속도화변화저우비강,상합두중적기류속도(평균속도0.062 m/s)원저우중비도(평균속도3.260 m/s);정상상합두중적평균온도시34.0℃,명현고우중비도내온도(28.7℃);수착두구직경적증가,상합두온도여기류변화불명현.결론 통과수치모의연구증실,상합두기류점비강기류적비례흔소,두구적개방대두내기류급비강기류적영향흔소.
Objective To investigate the relationship between the maxillary sinus flow field,temperature field and the maxillary sinus ostium size, and to provide a reference for endoscopic surgery according to the maxillary sinus scope.Methods One case of adult female CT image data was obtained,and used to build a three-dimensional model of nasal cavity and maxillary sinus.Computational fluid dynamics method was used to study the airflow and temperature of the maxillary sinus, as well as the physiological function of the maxillary sinus.Simulation surgery by means of different maxillary sinus diameters (normal, 8 mm, 10 mm, 12 mm and 15 mm) was used to describe the maxillary sinus airflow and temperature change.Results It was found that by numerical simulation the airflow of maxillary sinus and nasal cavity showed lower speed (average speed 0.062 m/s) than that in the middle nasal meatus (average speed of 3.260 m/s) , and the average temperature in the normal maxillary sinus was 34 ℃, which was higher than that in the middle nasal meatus (temperature 28.7℃).With the increase of the diameter of the maxillary sinus, the air temperature change was not obvious.Conclusions The physiological function of the maxillary sinus can be studied through the numerical simulation.With the increase of the ostia diameter of maxillary sinus, the sinus temperature and ventilation is not affected.It provides a reference for quantification of clinical endoscopic maxillary sinus surgery.
