临床上,在诊断一个矫正的案例时会需要一张全景片,侧位片,甚至目前较流行的cone beam CT,这些 X光片对于正确的判断病例属性与治疗的术式分析起到重要的作用,在日常的片子拍摄过程当中往往会看到一些人为的因素,造成片子的判读出现严重的落差
In the ideal ceph, the patient looks straight ahead and holds his breath.
1. Angle: Make sure your patient's occlusion is parallel to the floor. Avoid stretching your patients upward or having them stand with their chin tucked. Both of these things can affect angulation. (病人的咬合必须与地板成平行)
2. Breath: Hold it! Asking patients to hold their breath during the exposure eliminates a lot of movement. (暂时停止呼吸)
3. Correct Settings: Check your KVP and MA settings. Are they sufficient for the college linebacker or too strong for the small 8-year-old? (正确的X光曝露量)