| 姜滨,王振常,鲜军舫.上颌切牙管解剖及病变的多层螺旋CT表现[J].中国医学影像技术,2010,26(3):472~475 |
| 上颌切牙管解剖及病变的多层螺旋CT表现 |
| Multi-slice spiral CT appearances of maxillary incisive canal:Observation of normal anatomy and abnormalities |
| 投稿时间：2009-09-27 修订日期：2009-12-09 |
| DOI： |
| 中文关键词: 切牙管 解剖学 体层摄影术,X线计算机 |
| 英文关键词:Incisive canal Anatomy Tomography, X-ray computed |
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| 摘要点击次数: 2007 |
| 全文下载次数: 1015 |
| 中文摘要: |
| 目的 应用多层螺旋CT(MSCT)及其后处理技术观察上颌切牙管正常解剖及病变的CT表现。 方法 回顾分析108名健康志愿者(正常组)及65例切牙管病变患者(病变组)的MSCT资料。 结果 正常组切牙管MSCT表现:根据其鼻腔侧开口的形状分为双孔型(37.04%)、短小骨嵴型(33.33%)和单孔型(29.63%);根据冠状面MSCT表现分为管状(59.26%)、Y形(37.04%)和锥形(3.70%);根据矢状面MSCT表现分为管状(84.26%)、锥形(14.81%)和梭形(0.93%)。正常组切牙管鼻腔侧、口腔侧开口的横径分别为(4.67±1.31)mm、(3.51±0.88)mm,差异有统计学意义;切牙管长度为(10.71±1.95)mm,男(11.51±1.97)mm,女(9.91±1.58)mm,存在性别差异;切牙管后壁与硬腭夹角为(118.51±9.44)°;前壁上、下口至牙槽骨前缘的垂直距离分别为(9.29±1.26)mm和(7.12±1.21)mm,差异有统计学意义。病变组切牙管MSCT表现:病变累及切牙管主要表现为4种类型:增宽(47.69%)、狭窄(46.15%)、变短(3.08%)和中断(3.08%)。 结论 MSCT检查及其图像后处理可以清楚显示切牙管,有助于在种植牙和整形外科手术中避免切牙管的损伤,并可早期发现切牙管病变和指导治疗。 |
| 英文摘要: |
| Objective To observe the morphological features of the incisive canal in normal anatomy and abnormalities with multi-slice spiral CT (MSCT). Methods MSCT findings of 108 normal subjects and 65 patients with abnormalities involving incisive canal were retrospectively analyzed. Results The normal incisive canal were classified into 3 types according to the morphology of the nasal opening: two openings, short bony crest and one opening (37.04%, 33.33% and 29.63%, respectively), as well as cylinder, Y-shaped and pyramidal (59.26%, 37.04% and 3.70%) in coronal images, and cylinder, pyramidal and fusiform (84.26%, 14.81% and 0.93%) in sagittal images. The maximum diameter of the nasal and palatal opening was (4.67±1.31) mm and (3.51±0.88) mm (P<0.05). The length of the incisive canal was (10.71±1.95) mm, (11.51±1.97) mm in male and (9.91±1.58) mm in female respectively, and gender difference was found (P<0.05). The angle between the posterior wall and the hard palate was (118.51±9.44)°. The upper and lower length from the anterior wall of the incisive canal to the cortical palate was (9.29±1.26) mm and (7.12±1.21) mm, respectively (P<0.05). The manifestations of abnormalities involving incisive canal including enlargement (47.69%), narrowing (46.15%), shortening (3.08%) and interruption (3.08%) were observed. Conclusion The morphology of the incisive canal can be clearly delineated with MSCT and post processing techniques. It is extremely valuable for avoiding potential complications during surgical procedures such as implant placement and helpful to the diagnosis and treatment of abnormalities involving maxillary incisive canal. |
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