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目的探讨多层螺旋CT后处理技术对下咽癌诊断及周围组织侵犯的评估价值。方法回顾性分析23例经病理证实的下咽癌CT横轴位图像及其多平面重建(MPR)和透明化容积重组技术(VRT)重建图像的病历资料,对下咽癌的浸润范围进行评估。结果 23例轴位图像下咽部均可见异常软组织影,其中8例可见喉软骨破坏,13例可见颈部淋巴结转移,MPR和透明化VRT重建显示17例梨状窝扭曲、变窄甚至消失。结论 CT轴位图像结合MPR和透明化VRT重建图像能更加准确、直观地显示下咽癌的浸润范围,更准确的评估下咽癌。
Objective To investigate the diagnostic value of multi-slice spiral CT post-processing in the diagnosis of hypopharyngeal carcinoma and its surrounding tissue invasion. Methods A retrospective analysis of 23 cases of pathologically confirmed hypopharyngeal CT axial images and multiplanar reconstruction (MPR) and clear volume reconstruction (VRT) reconstruction of the medical record data to evaluate the extent of invasion of hypopharyngeal carcinoma . Results In all 23 cases, abnormal soft tissues were observed in the hypopharynx of the axial images. Among them, laryngeal cartilage was destroyed in 8 cases and cervical lymph node metastasis was seen in 13 cases. The reconstruction of MPR and VRT showed that 17 cases of piriformis were twisted, narrowed or even disappeared. Conclusion CT axial images combined with MPR and VRT can be used to reconstruct the hypopharyngeal carcinoma more accurately and intuitively.