数字化断层融合排粪造影技术有效层面评价

Evaluation of the best diagnostic layers of defecography by digital tomosynthesis

目的探讨数字化断层融合技术排粪造影有效诊断层面,评价其有效性和全面性。方法收集本院数字化断层融合排粪造影图像56例,断层层面图像按照重建层面,分为5个组:210-201 mm组,200-191 mm组,190-181 mm组,180-171 mm组,170-160 mm组。由2名诊断医师分别对每组图像进行评价,诊断包括排粪造影最常见的直肠前突、黏膜脱垂和盆底下降。采用评分法确定有效诊断层面,而后就其有效性和全面性与传统X线排粪造影对比。结果在诊断直肠前突、黏膜脱垂和盆底下降时,五组图像间得分差异有统计学意义,高分区集中在170-200 mm之间,得出有效诊断层面在170-200 mm之间,并且较传统X线排粪技术更为有效和全面。结论数字化断层融合排粪造影技术在其有效诊断重建层面内,诊断更有效、更全面,值得进一步的推广和应用。

Objective To explore the effective diagnostic layers of defecography by digital tomosynthesis,and evaluate its effectiveness and comprehensiveness.Methods The imaging of defecography by digital tomosynthesis of 56 cases in the Shanxi Dayi Hospital was divided into five groups according to different reconstruction layer： 210-201 mm group,200-191 mm group,190-181 mm group,180-171 mm group,170-160 mm group. The imaging of the rectocele, mucosal prolapse and pelvic floor descent were evaluated by two diagnosticians, respectively. The scoring method was used to compare the diagnostic effectiveness between different reconstruction layers, and find out the effective reconstruction layers. The effectiveness and comprehensiveness of this method was compared with that of traditional X-ray defecography.Results The score of imaging was statistically different among 5 groups, and high scores were mainly found in 170-200 mm reconstruction layers. The effective diagnostic reconstruction layers were 170-200 mm in the diagnosis of rectocele, mucosal prolapse and pelvic floor descent, and the diagnosis was more effective and comprehensive than that of traditional X-ray defecography.Conclusion The defecography by digital tomosynthesis is more effective and comprehensive in effective diagnostic reconstruction layers, and it is worthy of further promotion and application.