一种新型辅助CT扫描上肢握架的设计及应用研究

Study on the design and application of a new type of shelf for grip of upper limb

目的:设计一种新型上肢握架,帮助患者行CT扫描过程中支撑悬空的上肢,减少CT图像伪影,方便造影剂注射操作,提高患者舒适性,提升注射造影剂人员的满意度。方法:基于临床实践需要和人体结构特点设计的上肢握架基本结构由立架、横连杆、握杆和横向脚杆组成。选取在医院需要做胸腹部CT增强扫描的2400例患者,依据随机数表法将其分为观察组和对照组,每组1200例。两组均行CT增强扫描,观察组扫描过程中使用新型上肢握架支撑悬空的上肢,对照组双手臂自然下垂置于身体两侧;对比两组CT图像出现伪影情况,患者扫描舒适性及注射造影剂人员满意度。结果:观察组在减少CT图像出现伪影情况、提高患者舒适性,注射造影剂人员满意度均显著优于对照组,差异有统计学意义(x^(2)=17.757,x^(2)=23.008,x^(2)=19.206;P<0.001)。结论:新型上肢握架能帮助患者行CT扫描时支撑悬空的上肢,减少CT图像出现伪影情况,提高其在CT扫描过程中上肢舒适感,提升注射造影剂人员的满意度。

Objective:To design a new type of shelf for grip of upper limb,which would help patients to support the suspended upper limb when they underwent computed tomography(CT)scan,so as to reduce the artifacts of CT image,and provide convenience for injection operation of contrast agent,and improve the comfort of patients and enhance the satisfaction of personnel who injected contrast agent.Methods:The basic structure of the shelf for grip of upper limb were composed by floor stand,horizontal linkage,holding rod and horizontal foot leg.2400 patients who need to undergo CT enhancement scan on chest and abdomen of them were selected,and they were divided into observation group and control group according to random number table,with 1200 cases in each group.Both two groups underwent CT enhancement scan.And observation group used new type of shelf for grip of upper limb to support the suspended upper limb and the two arms of patients of control group placed aside of body.The situation of occurring artifact in CT images of two groups were compared,as well as the comfort of patients in scan and the satisfaction of personnel who injected contrast agent.Results:The reduction of occurring artifacts of CT images,the enhancement of the comfort of patients and the satisfaction of personnel who injected contrast agent in observation group were significantly better than those in control group(x^(2)=17.757,x^(2)=23.008,x^(2)=19.206,P<0.001).Conclusion:The new type of shelf for grip of upper limb can help patients to support the suspended upper limbs,and can reduce the occurred artifacts in CT images,and can improve the comfort of upper limbs of patients during CT scanning,and can enhance the satisfaction of personnel who inject contrast agent.