鼻骨数字化摄影中EVP的应用

目的：探讨EVP软件在鼻骨侧位数字化影像处理中的价值。方法：对50例鼻骨侧位数字化影像应用不同的EVP技术参数进行影像处理,由2名放射科经验丰富的医生对处理后的影像进行评估,评价影像对鼻骨整体、周边软组织及前颅窝骨质的显示情况。结果：50例经过优化参数的EVP软件处理影像与原始EVP参数影像及非EVP影像对鼻骨整体显示清晰的分别为44例、35例和19例（χ^2=28.32,P〈0.01）;对鼻骨周边软组织显示清晰的分别为41例、31例和12例（χ^2=35.23,P〈0.01）;对前颅窝骨质显示清晰的分别为33例、22例和4例（χ^2=35.93,P〈0.01）。结论：对于鼻骨整体、周边软组织及前颅窝骨质的显示优化参数后的EVP影像明显强于原始EVP参数影像及非EVP影像。

Application of EVP in Digital Radiography of Nasal Bone

Objective.. To discuss the value of enhanced visualization image processing （EVP） in digitizing image processing of lateral view of nasal bone. Methods：Different EVP parameters were used to process the digital images of lateral view of nasal bone in 50 cases. The processed images of nasal bone, soft tissue of nasal bone and anterior cranial fossa bone were evaluated by two experienced radiologists. Results： The processed digital images of the whole nasal bone with modified-EVP, original-EVP and non-EVP could be discerned in 44,35,19 cases （χ^2= 28.32, P〈0.01） respectively, those of the soft tissues of nasal bone were 41,31,12 cases （χ^2=35.23, P〈0.01） respectively, and those of the anterior cranial fossa bone were 33,22,4 cases （χ^2 = 35. 9, P〈 0.01 ） respectively. Conclusion： The quality of modified-- EVP images is better than the original-EVP and non-EVP images in displaying nasal bone, soft tissue of nasal bone and anterior cranial fossa bone.