发展中国家儿科 CT 扫描的优化。

Optimization of pediatric CT scans in a developing country.

机构信息

Unité de Recherche de la Matière Condensée, d'Electronique et de Traitement du Signal, Department of Physics, Faculty of Science, University of Dschang, Dschang, Cameroon.

Radiography Department, Yaoundé General Hospital, Yaoundé, Cameroon.

出版信息

BMC Pediatr. 2021 Jan 20;21(1):44. doi: 10.1186/s12887-021-02498-2.

DOI:10.1186/s12887-021-02498-2

PMID:33472595

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7816416/

Abstract

BACKGROUND

The purpose of this study was to assess scan parameters and to propose strategies to optimize the examinations of children (from 0 to 15 years old) on adult scanners in developing countries.

METHODS

A study was done in 2015 and 2018 on 312 pediatric patients to verify improved practices. The study of 2015 ended with proposed strategies. Dose and scan parameters were available for prospective dose analysis. These strategies were implemented in a study of 2018.

RESULTS

Amount the CT examinations study in this paper, the common was head trauma (90 %). For every pediatric CT scan in 2015, a kV of 120 was used in the various hospitals. The mAs ranged from 57.75 to 283.33, slice thicknesses from 1.25 to 2.5 mm and pitch from 0.525 to 1.375 mm. In the study of 2018, implementing the strategy defined in the methodology and proposed in 2015: CTDI decreased by 21.27 % for children < 1 year, 31.97 % for children 1-4 years, 17 % for children 5-9 years. DLP also decreased by 25.14 %, 36.29 % and 19.85 % for children < 1 year, 1-4 years and 5-9 years respectively. Children were exposed to ionizing radiation on machines designed for adults, but now the doses received by children are reduced.

CONCLUSIONS

The reduction of doses during the pediatric CT examination is possible with the introduction of new optimization protocols or the acquisition of a new machine with a pediatric protocol.

摘要

背景

本研究旨在评估扫描参数，并提出在发展中国家在成人扫描仪上为儿童（0 至 15 岁）优化检查的策略。

方法

2015 年和 2018 年对 312 名儿科患者进行了一项研究，以验证改进措施。2015 年的研究结束时提出了策略。剂量和扫描参数可用于前瞻性剂量分析。这些策略在 2018 年的一项研究中得到了实施。

结果

在本文的 CT 检查中，常见的是头部创伤（90%）。在 2015 年的每一次儿科 CT 扫描中，各医院均使用 120kV 的千伏值。毫安从 57.75 到 283.33 不等，切片厚度从 1.25 到 2.5 毫米，螺距从 0.525 到 1.375 毫米。在 2018 年的研究中，实施了在 2015 年定义的方法学和提出的策略：对于 <1 岁的儿童，CTDI 降低了 21.27%；对于 1-4 岁的儿童，CTDI 降低了 31.97%；对于 5-9 岁的儿童，CTDI 降低了 17%。DLP 也分别降低了 25.14%、36.29%和 19.85%，对于 <1 岁的儿童、1-4 岁的儿童和 5-9 岁的儿童。儿童在为成人设计的机器上接受电离辐射，但现在儿童接受的剂量减少了。