Abstract：Objective To investigate the application value of self-made simple foot fixation device in the auxiliary localization diagnosis using single photon emission computed tomography/computed tomography(SPECT/CT) tomographic bone scintigraphy of the foot. Methods Thirty patients(13 males and 17 females, aged 42-83[65.9±9.8]years) who underwent 99Tcm methylene diphosphonate SPECT/CT bone scintigraphy and presented with abnormal foot bone metabolism in our hospital from November 2019 to November 2020 were prospectively selected. On the tomographic bone scintigraphy of the foot, 15 patients were selected by drawing lots with a foot fixation device, whereas 15 patients were selected without the device, and the limbs were placed in the conventional position. The two groups were compared in terms of baseline data, namely, age, sex, body mass index(BMI), and pathological side. The angle between foot long axis and scan bed, scanning length, scanning time, radiation dose, and degrees of deviation of the X-, Y-, and Z-axes of the two modes were measured and compared. Results No significant differences in age, sex, BMI, and pathological side were observed between the two groups (all P values >0.05). The angle between the foot long axis and the scan bed in the observation group (95.6°±4.1°) was smaller than that of the control group (123.8°±6.5°). The difference was statistically significant (t=-14.17, P<0.001). The foot scanning length, scanning time, radiation dose of CT in the observation group were reduced by 27.6%, 27.8%, and 24.1%, respectively, relative to those in the control group ([15.2±1.4] cm and [21.0±1.8] cm; [6.89±0.63] s and [9.54±0.79] s; [28.6±2.0] mGy·cm and [37.7±2.9] mGy·cm; t=-10.02, -10.08, -10.16; all P values <0.001). No significant difference in image fusion deviation was found between the two groups (t=1.13, -0.57, -0.13; all P values >0.05). Conclusions The simple foot fixation device designed in this study can obtain the standard anatomical images of the foot without affecting image fusion quality, which can reduce CT radiation dose.
徐慧婷, 倪建明, 李薇, 刘妍, 赵艳军, 袁芸芸. 自制足部简易固定装置在足SPECT/CT断层骨显像定位诊断中的应用[J]. 中华解剖与临床杂志, 2022, 27(1): 8-12.
Xu Huiting, Ni Jianming, Li Wei, Liu Yan, Zhao Yanjun, Yuan Yunyun. Application of self-made simple foot fixation device in localization diagnosis on SPECT / CT tomographic bone scintigraphy of foot. Chinese Journal of Anatomy and Clinics, 2022, 27(1): 8-12.
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2022, Vol. 27 
