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目的 :对正常人蝶窦外侧壁相关结构的CT和MRI进行对比研究 ,为该区域疾病诊断和鉴别诊断提供理论依据。方法 :对 2 5例正常人行冠状和水平位高分辨率CT扫描。对 2 0例正常人行MRI冠状、水平位SET1 WI和FSET2 WI扫描。结果 :①蝶窦气化分为蝶骨体气化类型和蝶骨体突起气化类型。前者分 3型 :甲介型 (2 % ) ,鞍前型 (2 0 % ) ,鞍型 (78% )。后者分 4型 :蝶骨小翼气化型 (38% ) ,蝶骨大翼气化型 (40 % ) ,翼突气化型(34% ) ,鞍背气化型 (6 % )。②蝶骨外侧骨壁最薄 (<1mm)处位于视神经管内壁 (96 % )、蝶筛隐窝层面骨壁(86 % )、颈内动脉管层面骨壁 (6 6 % )。③过度气化的蝶窦可使圆孔 (6 4 % )和翼管 (44 % )突入蝶窦腔内。结论 :临床应对视神经管周围不同气化类型给予充分重视
OBJECTIVE: To compare the CT and MRI related structures of the normal sphenoid sinus lateral wall, and provide a theoretical basis for the diagnosis and differential diagnosis of the disease in this area. Methods: Coronary and horizontal high resolution CT scans were performed in 25 normal subjects. Twenty patients with coronary artery disease underwent coronary angiography, horizontal SET1 WI and FSET2 WI scans. Results: (1) Sphenoid sinus gasification was divided into spheroid body gasification type and sphenoid body protrusion gasification type. The former is divided into 3 types: A type (2%), anterior saddle type (20%), saddle type (78%). The latter is divided into 4 types: sphenoid wing gasification type (38%), sphenoid wing gasification type (40%), wing gasification type (34%), saddle gasification type (6%). ② The outer side of the sphenoid bone is the thinnest (<1mm) at the inner wall of the optic canal (96%), the butterfly wall (86%) and the carotid artery (66%). ③ excessive gasification of the sphenoid sinus hole (64%) and the wing tube (44%) into the sphenoid sinus cavity. Conclusion: The clinical response to different types of gasification around the optic canal gives full attention