Ito J
Niigata University School of Dentistry, Japan.
Dent Jpn (Tokyo). 1990;27(1):109-13.
Normal anatomy of the maxillofacial regions is clearly shown by both CT and MRI. The use of dental devices causes deterioration in CT and MRI of the tongue and oral floor. A high-resolution bone window display is highly useful in examining bony structures. Contrast CT is useful in diagnosis of tumorous, inflammatory, and vascular lesions. MRI shows the extensions of tumors more clearly than CT, and MRI enhanced with Gd-DTPA is very useful in determining tumor extensions into bony structures. Both CT and MRI should be used in diagnosis of maxillofacial lesions.
CT和MRI都能清晰显示颌面区域的正常解剖结构。使用牙科器械会导致舌头和口底的CT及MRI图像质量下降。高分辨率骨窗显示对检查骨质结构非常有用。增强CT对肿瘤、炎症和血管性病变的诊断很有帮助。MRI比CT更能清晰显示肿瘤的侵犯范围，钆喷酸葡胺增强MRI对确定肿瘤向骨质结构的侵犯非常有用。在颌面病变的诊断中，CT和MRI都应使用。
