CAJ | 학술논문

锥形束CT（CBCT）是一种新型的高分辨率三维X线成像系统，不仅可立体地显示牙槽骨的高度、宽度和厚度，还可精确地显示颌骨缺损的三维信息，从各个方向清楚地显示颌骨内病变的范围、边界，骨质破坏，受累牙情况及其与周围解剖结构的毗邻关系。在牙根纵裂的早期诊断中，CBCT显现牙根纵裂的敏感度、准确性远高于X线根尖片和曲面体层片，且轴位断层图像显示的根纵折裂纹明显较冠状位和矢状位要清晰；但CBCT产生的条纹状伪影和线束硬化现象会降低扫描图像质量；CBCT对软组织的分辨率较低，不能精确显现牙髓病和根尖周软组织病变。相信随着系统配置和软件的进一步开发，CBCT有望成为口腔疾病诊断最理想的影像设备。
추형속CT（CBCT）시일충신형적고분변솔삼유X선성상계통，불부가입체지현시아조골적고도、관도화후도，환가정학지현시합골결손적삼유신식，종각개방향청초지현시합골내병변적범위、변계，골질파배，수루아정황급기여주위해부결구적비린관계。재아근종렬적조기진단중，CBCT현현아근종렬적민감도、준학성원고우X선근첨편화곡면체층편，차축위단층도상현시적근종절렬문명현교관상위화시상위요청석；단CBCT산생적조문상위영화선속경화현상회강저소묘도상질량；CBCT대연조직적분변솔교저，불능정학현현아수병화근첨주연조직병변。상신수착계통배치화연건적진일보개발，CBCT유망성위구강질병진단최이상적영상설비。
Cone?beam?computed?tomography(CBCT)?is?a?new?type?of?high-resolution?three-dimensional(3D)?X-ray?imaging?system.?CBCT?can?not?only?display?the?height,?width,?and?thickness?of?the?alveolar?bone?stereoscopically,?but?it?also?can?display?the?3D?information?of?jaw?defects.?The?range?and?boundary?of?jaw?lesions,?bone?destruction,?condition?of?involved?teeth,?and?adjacent?relationship?between?the?teeth?and?surrounding?anatomical?structures?from?all?directions?can?be?accurately?shown.?In?the?early?diagnosis?of?vertical?root?fracture,?the?sensitivity?and?accuracy?of?vertical?root?fracture?revealed?by?CBCT?is?considerably?higher?than?periapical?radiography?and?orthopantomography.?Images?of?longitudinal?fracture?crack?obtained?by?axial?tomography?are?clearer?than?those?of?coronal?and?sagittal?tomography.?However,?the?streak?artifact?and?beam?hardening?produced?by?CBCT?can?reduce?the?quality?of?scanning?images.?The?resolution?of?CBCT?is?lower?for?soft?tissues,?so?the?lesions?of?pulp?and?periapical?soft?tissues?cannot?be?accurately?shown.?With?further?development?of?the?system?configuration?and?software,?CBCT?is?expected?to?become?the?most?ideal?image?equipment?for?the?diagnosis?of?oral?diseases.