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目的：研究喉部螺旋ＣＴ三维成像的临床应用价值。方法：１５例行喉部螺旋ＣＴ扫描。将容积扫描数据传送至ＧＥＳｕｎＳｐａｒｃ２０工作站，使用表面覆盖重建方法（ｓｈａｄｅｄｓｕｒｆａｃｅｄｉｓｐｌａｙ，ＳＳＤ）和内表面重建模式进行后处理，得到喉ＳＳＤ影像（ＳＳＤ－ｉｍ－ａｇｅ）和ＣＴ仿真喉镜（ＣＴｖｉｒｔｕａｌＬａｒｙｎｇｏｓｃｏｐｙＣＴＶＬ）。由两位放射科医生和一位耳鼻喉科医生分别对喉部螺旋ＣＴ轴位影像，喉ＳＳＤ影像，ＣＴ仿真喉镜（ＣＴＶＬ）的影像质量，提供诊断信息进行分析。结果：对喉部肿瘤的诊断，喉部螺旋ＣＴ轴位影像比三维成像提供更多的信息，但是，喉部三维成像直观地显示肿瘤侵犯上下范围，受到耳鼻喉科医生的高度评价。对于喉部炎症的诊断，ＣＴ仿真喉镜比ＣＴ轴位影像提供更多的信息。结论：将螺旋ＣＴ轴位影像，喉ＳＳＤ影像，ＣＴ仿真喉镜三种影像结合起来，可以提高诊断准确性，并且为临床提供更直观的影像，指导制定手术方案。
Objective: To study the clinical value of throat helical CT three-dimensional imaging. Methods: Fifteen patients underwent throat helical CT scan. The volume scan data was sent to the GESunSparc20 workstation for post-processing using the shaded surface reconstruction (SSD) and internal surface reconstruction models to obtain SSD-im-age and CT virtual Laryngoscopy CTVL. Two radiologists and one otolaryngologist provided diagnostic information on the axial helical CT images, throat SSD images and CT virtual laryngoscope (CTVL) images, respectively. Results: For the diagnosis of laryngeal neoplasms, axial helical CT images provide more information than 3D imaging. However, laryngeal three-dimensional imaging directly shows the extent of tumor invasion and is highly evaluated by otolaryngologists. For the diagnosis of laryngeal inflammation, CT simulation laryngoscope provides more information than CT axial images. Conclusion: Combining axial CT images, laryngeal SSD images and CT virtual laryngoscope can improve the diagnostic accuracy and provide more direct visual images for clinical operation.