Nakamaru Yuji, Fukuda Satoshi, Miyashita Shigenori, Ohashi Masami
Department of Otolaryngology, Hokkaido University School of Medicine, kita 15 nishi 7, kita-ku Sapporo 060-8638, Japan.
Auris Nasus Larynx. 2002 Jan;29(1):55-7. doi: 10.1016/s0385-8146(01)00102-x.
To examine whether the styloid process can be imaged by three-dimensional computer tomography reconstruction (3-DCT) distinctly enough to be used for diagnosis, and whether the image findings are explanatory of the symptoms.
We performed 3-DCT in four patients suspected to have elongated styloid process in our hospital. The apparatus we used was X-vigor (Toshiba), and the processing software was X-tension; the slicing thickness was 1.0 mm and the shifting speed of CT table was 1.0 mm per rotation. One hundred and twenty images were reconstructed for a view.
In all cases, the 3-DCT showed the exact full length of the styloid process. Two cases were diagnosed as elongation of the styloid process by 3-DCT and their image findings were explanatory of the symptoms. In other two cases, the 3-DCT showed no difference between the right and the left styloid processes, and thus the diagnosis of elongation of the styloid process had to be excluded.
We suggest that 3-DCT is useful for the diagnosis, explanation to patients and selection of treatment in some cases of elongated styloid process, but further study in more cases is required before we can fully confirm the utility.
探讨三维计算机断层扫描重建（3-DCT）能否清晰显示茎突，以用于诊断，以及图像表现是否能解释症状。
我们对我院4例疑似茎突过长的患者进行了3-DCT检查。所用设备为X-vigor（东芝），处理软件为X-tension；切片厚度为1.0mm，CT检查床的移动速度为每旋转1.0mm。每次扫描重建120幅图像。
所有病例中，3-DCT均显示了茎突的确切全长。2例经3-DCT诊断为茎突过长，其图像表现能解释症状。另外2例中，3-DCT显示左右茎突无差异，因此排除茎突过长的诊断。
我们认为3-DCT在某些茎突过长病例的诊断、向患者解释病情及治疗选择方面有用，但在充分证实其效用之前，还需要更多病例的进一步研究。
