Application of CT image and reconstruction technique in clinical imaging anatomy of sacral vertebra&nbsp;

doi:10.13418/j.issn.1001-165x.2022.4.07

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Chinese Journal of Clinical Anatomy ›› 2022, Vol. 40 ›› Issue (4) : 410-413. DOI: 10.13418/j.issn.1001-165x.2022.4.07

Application of CT image and reconstruction technique in clinical imaging anatomy of sacral vertebra

Wang Shiming¹, Xiao Zhibo¹*, Lu Yunfeng¹, Liao Junyi², Jin Rui¹, Li Qiaolin¹, He Xie¹

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Abstract

Objective To observe the anatomical morphology of the sacral vertebra and the position relationship between the sacral vertebra and the pubic symphysis, which provides anatomic basis for the optimal design of the anteroposterior radiography position of the sacral vertebra. Methods Pelvic CT images of existing patients were collected randomly. The anatomical morphology of sacral vertebra and its relative positionship with pubic symphysis were observed and analyzed by CT image reconstruction technique. Results The sacral vertebra was concave in front, the bottom was upward and the tip was backward and downward. The angle A, between the long axis of the human body and the line M formed by connecting the midpoint of the upper and lower edges of the sacral vertebra, was acute angle. The pubic symphysis was located at the lower position of the anterior middle of the sacral vertebra. The angle B, between the vertical line of the long axis of the human body and the line N formed by connecting the upper edge of the pubic symphysis and the lower edge of the lower sacral vertebra, was positive (that was, the position of the upper edge of the pubic symphysis was lower than the lower edge of the sacral vertebra) accounting for 89.7% of cases (897/1000). The measurement value of angle A in the adolescent group (14~45 years old) was (35.86±6.88)°, which was significantly lower than that in the middle-aged group (46~69 years old) (37.82±6.34)° and the elderly group (>69 years old) (37.60±6.65)° （P<0.05）. The value of angle B in the adolescent group was (10.27±7.02)°, which was significantly higher than that in the middle-age group (8.88±7.23)° and the elderly group (7.83±6.93)° (P<0.05), and there was no significant difference between the middle-age group and the elderly group. The value of angle A (36.12±0.27)° and angle B (6.27±0.25)° in males were significantly lower than those in females (38.03±0.33)° and (12.79±0.33)° (P<0.05). Conclusions The CT image reconstruction technique can be used to observe and analyze the anatomical morphology of the sacral vertebra and its relative position with the pubic symphysis. The positional relationship of the sacral vertebra and pubic symphysis were significantly different in different ages and genders, which can provide a reliable anatomic basis for the optimal design of the radiography position of anteroposterior sacral vertebra.

Key words

CT image recombination technique / / / Sacral vertebra / / / Anteroposterior / / / Radiography / Age differences / / / Gender differences

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Wang Shiming, Xiao Zhibo, Lu Yunfeng, Liao Junyi, Jin Rui, Li Qiaolin, He Xie. Application of CT image and reconstruction technique in clinical imaging anatomy of sacral vertebra [J]. Chinese Journal of Clinical Anatomy. 2022, 40(4): 410-413 https://doi.org/10.13418/j.issn.1001-165x.2022.4.07

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