中国耳鼻咽喉头颈外科2025，Vol.32Issue(4)：225-228,233,5.DOI:10.16066/j.1672-7002.2025.04.005
超高分辨率骨质CT与多层螺旋CT显示中耳关键传声结构的对比研究
A comparative study of ultra-high-resolution CT and multi-slice spiral CT showing the key sound transmission structures of the middle ear
摘要
Abstract
OBJECTIVE To compare the ability of ultra-high-resolution CT(U-HRCT)and multi-slice spiral CT(MSCT)to display key vocal transmission structures in the middle ear.METHODS Subjects with normal middle ear structures who underwent 0.1 mm layer thickness U-HRCT and 0.625 mm layer thickness MSCT scans at the same time in Beijing Friendship Hospital affiliated to Capital Medical University from December 2019 to August 2024 were retrospectively enrolled.Two experienced head and neck radiologists reconstruct standard transsectional,coronal images based on the thinnest layer thickness.According to the 5-point method,16 key sound transmission structures of the middle ear,including malleus,incus and stapes,as well as joints,ligaments and tendons,were evaluated for image quality scoring.The standard deviation(SD)value,signal noise ratio(SNR),and contrast noise ratio(CNR)of bone in the malleus region and intratympanic gas were measured and calculated on the two examination images.RESULTS Thirty patients(47 sides)with normal middle ear structure were included,including 18 males and 12 females.The two physicians compared the results of U-HRCT in showing malleus head,malleus neck,malleus handle,incus body,long process,and short process,5 points accounted for 100%,and the 5-point scores of incudomalleolar joint space,incudostapedial joint space,stapes footplate and annular ligament were 100%,98.29%,75.83%and 77.83%,respectively,which were significantly higher than those of MSCT(P<0.001).In addition,U-HRCT showed higher scores for lenticular process,stapes head,anterior arch of stapes,posterior arch of stapes,annular ligament,stapes muscle,and tendo musculi tensoris tympani than MSCT(P<0.001),and the lenticular process showed a 100%display rate.There was no significant difference in the SNR between the two groups(P>0.05),but the SD value of the malleus in U-HRCT was 161.6±36.4,which was significantly lower than that in MSCT(297.8±128.1),and the difference was statistically significant(P<0.001).CONCLUSION U-HRCT can clearly visualize the key sound transmission structures of the middle ear,and its visualization ability is significantly better than that of MSCT.关键词
体层摄影术,X线计算机/砧骨/镫骨/颞骨/解剖学/超高分辨率骨质CT/体层扫描技术Key words
Tomography,X-Ray Computed/Incus/Stapes/Temporal Bone/Anatomy/ultra-high-resolution CT/tomographic scanning technology引用本文复制引用
孙宇飞,汤若薇,丁贺宇,徐宁,钟朝辉,杨正汉,王振常,赵鹏飞..超高分辨率骨质CT与多层螺旋CT显示中耳关键传声结构的对比研究[J].中国耳鼻咽喉头颈外科,2025,32(4):225-228,233,5.基金项目
国家自然科学基金(82302282,82171886,61931013) （82302282,82171886,61931013）
首都医科大学附属北京友谊医院友谊"种子计划"人才项目(YYZZ202336) （YYZZ202336）
北京学者([2015]160号) （[2015]160号）
