摘要
目的 探讨螺旋 CT三维 (3D)重建技术在上气道病变中的临床应用价值。 方法 对 36例上气道病变的患者进行轴位螺旋 CT扫描 ,层厚 3.0 m m,螺距 1.0～ 1.2 ,分别做气道表面遮盖法 (SSD)、表面透视法 (Ray Sum)重建和叠加成像。 结果 SSD图像能清楚显示上气道的正常形态、多方位观察可全景地反映气道表面受压的情况 ,Ray Sum能更好地显示狭窄内缘的情况 ,9例 (2 5 % )气道 SSD显示正常 ;SSD图像上显示的肿瘤侵犯范围明显小于轴位和多平面重组 (MPR)图像。叠加成像清楚显示肿瘤与邻近结构尤其是血管、气道的关系。 结论 3D重建能立体地显示上气道病变 ,是轴位和
Purpose To evaluate the clinical application of helical CT three dimensional (3D) reconstruction in the upper airway diseases. Methods Helical CT was performed with 3.0mm slice thickness at pitch 1.0~1.2 in 36 patients with upper airway diseases. The upper airway shaded surface display (SSD), RaySum and integrated 3D images were processed respectively. Results SSD image could display the normal shape of the upper airway, and provide a panoramic view of the airway compression by lesion from multiple views, RaySum was better to investigate the internal margin of the narrowed airway, and the airway appeared normal in 9 (25%) cases. The involved extents of the tumor detected on SSD image was significantly smaller than that of axial and MPR images. The integrated 3D image could clearly demonstrate the relationship between the tumor and adjacent structures such as vessels and airway. Conclusion Helical CT 3D reconstruction can provide a three dimensional image of upper airway diseases, and is a good complementary method of axial and MPR images.
出处
《空军总医院学报》
2001年第1期25-26,28,共3页
Journal of General Hospital of Air Force,PLA
关键词
喉疾病
喉肿瘤
声带
声门
体层摄影术
X线计算机
Laryngeal diseases
Laryngeal neoplasms
Vocal cords
Glottis
Tomography, X ray computed
