The selection of window width and level for measuring the airway dimensions with spiral CT scan: an experimental study in Japanese white big-ear rabbits
- VernacularTitle:螺旋CT测量日本大耳白兔气道径线的窗宽窗位选择
- Author:
Xinwei HAN
;
Huibin LU
;
Gang WU
;
Ji MA
;
Nan WANG
;
Jiangtao SI
- Publication Type:Journal Article
- Keywords:
tomography;
X-ray computed;
trachea;
bronchus;
window width;
window level;
white big-ear rabbit
- From:
Journal of Interventional Radiology
2009;18(9):695-698
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the optimal window width and window level for measuring the airway dimensions with spiral CT scan in Japanese white big-ear rabbits so as to lay the foundation for airway stenting in animal experiments. Methods Multi-slice spiral CT scanning of cervico-thoracic region was performed in 30 healthy adult Japanese white big-ear rabbits, the anteroposterior and transversal diameter of the thoracic trachea, the anteroposterior diameter of the right and left bronchus were measured with lung window, mediastinum window and special fat window separately. The revealing rate of the tracheal wall and the measuring results in different windows and levels were recorded and compared with the anatomical data. The differences of the relevant data were statistically analyzed. Results With lung window, the tracheal wall was well demonstrated, but the relevant data were smaller than that with mediastinum window. With mediastinum window, the data were bigger and the tracheal wall border appeared blurred. The results obtained with fat window were close to the actual anatomical data. Conclusion For accurately measuring the anteroposterior and transversal diameter of the thoracic trachea in Japanese white big-ear rabbits with multi-slice spiral CT scan, fat window should be adopted, which is helpful for the preparation of tracheal and bronchial stents.
