International Journal of Radiation Research

en Design and application of over-flexion–extension position mould based on computed tomography examination of nasal bone patients Radiation Biology Radiation Biology یادداشت فنی Technical Note <div style="text-align: justify;">Background: We aimed to develop a mould for the over-flexion and over-extension positions to solve the technical problem of patients who find it difficult to form the over-flexion and over-extension positions of the cervical spine by lowering their heads forwards and raising their heads backwards. Materials and Methods: We calculated the average physiological bending radian of normal people and measured the depth of the cervical physiological curve using Borden's method. Finally, we designed a mould that conformed to the characteristics of the human cervical spine to conduct nasal bone examinations in the over-flexion and over-extension positions in combination with the patient's examination position. Results: When the neck is equipped with an over-flexion and over-extension mould when performing coronal nasal bone examinations, the nasal bone structure is more fully displayed than in routine examinations; furthermore, the clinical diagnosis efficiency greatly improves, and the rate of misdiagnosis significantly reduces. Conclusion: This model increases the comfort of patients and solves the technical problem of patients who cannot maintain the over-flexion and over-extension positions for an extended period.</div> Nasal bone, over-flexion–extension, mould, computed tomography, cervical spine. 1075 1078 http://ijrr.com/browse.php?a_code=A-10-1-1278&slc_lang=en&sid=1 L. Yang 7900319475328460028835 7900319475328460028835 No Department of Medical imaging, The second hospital of Hebei Medical University, Shijiazhuang 050000, China C. Yang yangcun2020k@126.com 7900319475328460028836 7900319475328460028836 Yes Department of medical equipment, The second hospital of Hebei Medical University, Shijiazhuang 050000, China G. Gao 7900319475328460028837 7900319475328460028837 No Department of Medical imaging, The second hospital of Hebei Medical University, Shijiazhuang 050000, China Y. Li 7900319475328460028838 7900319475328460028838 No Department of Medical imaging, The second hospital of Hebei Medical University, Shijiazhuang 050000, China L. Gao 7900319475328460028839 7900319475328460028839 No Department of Medical imaging, The second hospital of Hebei Medical University, Shijiazhuang 050000, China Q. Qi 7900319475328460028840 7900319475328460028840 No College of Forensic Medicine, Hebei Medical University, Shijiazhuang 050000, China X. Li 7900319475328460028841 7900319475328460028841 No Department of Medical imaging, The second hospital of Hebei Medical University, Shijiazhuang 050000, China Ch. Yang 7900319475328460028842 7900319475328460028842 No College of Forensic Medicine, Hebei Medical University, Shijiazhuang 050000, China