儿童腹部常见实体瘤增强CT扫描优化方案——去除平扫序列的可行性分析

目的：探讨在儿童腹部常见实体瘤增强CT（CECT）检查中去除平扫序列后的诊断效果和初步可行性分析。方法：回顾性对照分析168例腹部常见实体瘤患儿的CECT检查,分别由2位放射诊断医师用2种方法独立阅片。方法1：不参考平扫序列,只阅读增强序列（动脉期、静脉期）;方法2：同时阅读平扫序列及增强序列。用卡方检验评价两种方法诊断有无差异。同时评价瘤体内有无钙化及动脉期和静脉期的强化程度。结果：2种方法阅片的诊断结果无显著差异（χ2=0.50和2.25,P〉0.05）;方法1对瘤体内的钙化检出率很高（90%和92%）;动脉期与静脉期强化程度差距明显。结论：儿童腹部实体瘤CECT中去除平扫序列的优化方案具有可行性,但临床实践应用仍需进一步完善。

Study of the feasibility of an optimization protocol with contrasted enhancement multi-slice CT scanning for common pediatric abdominal solid tumors

Objective:To investigate the effect and feasibility of eliminating plain scan with contrast enhanced CT(CECT) in the diagnosis of pediatric abdominal solid tumors.Methods:168 abdominal CT scans in children with abdominal solid tumors were retrospectively analyzed.The CT images were evaluated by 2 radiologists independently.The first approach was to read only enhanced CT images(arterial phase and venous phase);the second approach was to read both plain and enhanced phases simultaneously.The results of two ap...