3D cone beam computed tomography(CBCT) images offer a unique and new appreciation of the anatomical structures and underlying anomalies not possible with conventional radiographs.However,in almost all aspects of CBCT ...3D cone beam computed tomography(CBCT) images offer a unique and new appreciation of the anatomical structures and underlying anomalies not possible with conventional radiographs.However,in almost all aspects of CBCT imaging,from utilization to application,inherent limitations and pitfalls exist.Importantly,these inherent limitations and pitfalls have practical implications which need to be addressed before the potential of this technology can be fully realized.The purpose of this review was to explore the current limitations and pitfalls associated with CBCT imaging to allow for better and more accurate understanding of the possibilities this imaging modality could offer,particularly pertaining to 3D cephalometry.展开更多
文摘目的分析颞下颌关节盘形态、位置与下颌骨垂直向和矢状向形态的关系。方法选择因颞下颌关节紊乱综合征(temporomandibular disorders,TMD)就诊于四川大学华西口腔医院颞下颌关节科的223例成年女性患者。根据核磁共振影像(magnetic resonance imaging,MRI)将关节盘位置分为盘髁关系正常、可复性盘前移(disc displacement with reduction,DDwR)和不可复性盘前移(disc displacement without reduction,DDwoR)3组,关节盘形态分为基本正常和异常两组。根据头颅侧位片测量下颌骨垂直向(下颌平面角、Y轴角、下颌支高度)和矢状向(SNB、下颌体长度、鞍角)形态指标。比较各个测量指标与关节盘位置、形态的相关性。结果关节盘位置和形态与下颌平面角、下颌支高度和Y轴角之间具有相关性(P<0.05),左侧关节盘位置与SNB之间具有相关性(P<0.05),双侧关节盘形态与SNB之间具有相关性(P<0.05)。结论关节盘的形态和位置与下颌骨的垂直向和矢状向形态之间有相关性,与垂直向形态之间的相关性更加密切。
文摘3D cone beam computed tomography(CBCT) images offer a unique and new appreciation of the anatomical structures and underlying anomalies not possible with conventional radiographs.However,in almost all aspects of CBCT imaging,from utilization to application,inherent limitations and pitfalls exist.Importantly,these inherent limitations and pitfalls have practical implications which need to be addressed before the potential of this technology can be fully realized.The purpose of this review was to explore the current limitations and pitfalls associated with CBCT imaging to allow for better and more accurate understanding of the possibilities this imaging modality could offer,particularly pertaining to 3D cephalometry.
