| ObjectiveTo establish the movement image for dog’s mandible andtemporomandibular joint by320CT, according to the principle of DynamicVolume.To select the more applicable scanning arguments by establishingdifferent low-dose movement models.In accordance with these arguments, men’s models of some mandibulardiseases such as tempormandibular disorders could be established in the futureclinical research.Methods1, To establish the movement image for dog,s mandible andtemporomandibular jiont by320CT.4healthy dogs were selected.The mouthgag which is non-metallic was seperated into7steps with each height of onestep1cm.The dogs were made the open-close mouth movements by the mouthgag. The dogs were scanned every once the mouth gag move forward orbackward a step. The data was reconstructed by320CT with Aquilion one vicesations or Vitrea2.1work station. The model could be observed in any angle orposition.2, Different radiation dose models were established according to differenttube voltage and current.And they were compared with eachother.Results1, All the dynamic process of the open and close mouth movements wererepresented by the movement images of dog. 2, Different radiation dose models were established according to differenttube voltage and current.3, Each model’s image was read and compared with others by theexperienced CT reader. The more applicable scanning arguments were got.That is the tube voltage80kv and the current50mA，which could provide alower-dose and better quality image.Conclusions1, The movement models of dog’s mandible and temporomandibular jointwere established by320CT. And the men’s model could be established in thefuture clinical research.2,The images’ quality is changing with different scanning arguments.3, Through the constrast research, the more applicable scanning argumentsfor dog’s mandible and temporomandibular jiont were got，i.e.the tube voltage is80kv and the current is50mA. |
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