直接数字化X线摄影在鼻骨摄影中的应用

Application of direct digital radiography of nasal bone

目的探讨直接数字化X线摄影(direct digitized radiography,DDR)在鼻骨摄影中的应用价值。方法对100例DDR鼻骨侧位影像采用图像后处理方法中多级图像对比增益法,又称“交响乐”功能(multi-scale image contrast amplification,MUSICA)、影像切割与局部放大等功能进行后处理,同时数字随机法对其中30例行普通X线摄影。由放射科经验丰富的医、技师各2名对所有鼻骨影像进行分析,评价其对鼻骨骨折、鼻骨整体及鼻周软组织的显示。结果100例DDR鼻骨影像中,诊断骨折46例,鼻骨整体及鼻周软组织显示满意的分别为95和92例;对照组30例DDR鼻骨影像发现骨折18例,X线片发现骨折11例,漏诊7例(χ2=5.14,P<0.05),30例DDR影像中,鼻骨整体及鼻周软组织显示满意的均为28例;普通X线片两者显示满意的分别为6例(χ2=20.05,P<0.05)和10例(χ2=15.06,P<0.05)。结论DDR影像比普通X线影像能更好的显示鼻骨和鼻周软组织,提高鼻骨骨折的检出率。

Objective To research the application value of direct digital radiograph （DDR） in nasal bone imaging. Methods One hundred cases were examined by DDR, 30 cases of them were examined by two methods both DDR and conventional radiography. All digital images were post-processed with “ MUSICA” （Multi-Scale Image Contrast Amplification ）, incision and largamente, analyzed and diagnosed by experienced two radiologists and two technicians. Results One hundred cases of nasal bone, soft tissue of nose were showed excellent in DDR, and satisfactory cases were 95 and 92, respectively. Forty-six cases of nasal bone fractures were found. Thirty cases were examined by both DDR and conventional radiography, images of nasal bone, soft tissue of nose were showed, satisfactory cases were 28 inDDR; and satisfactory cases were 6（x^2 =20.05,P 〈0.05） and 10 （x^2 = 15.06, P 〈0.05） respectively in conventional radiography. Nasal bone fracture was found in 11 cases and 18 cases （x^2 = 5.14 ,P 〈0.05 ） in conventional and digital radiography, respectively. Conclusion DDR images of nasal bone, soft tissue of nose was excellent, more fractures were discovered than conventional radiography. Image quality of DDR is better than conventional radiography in nasal bone imaging.