Abstract

Purpose

To survey Society of Abdominal Radiology Crohn’s Disease (CD) Disease-Focused Panel (DFP) members to understand state-of-the-art CT/MR enterography (CTE/MRE) protocols and variability between institutions.

Methods

This study was determined by an institutional review board to be “exempt” research. The survey consisted of 70 questions about CTE/MRE patient preparation, administration of contrast materials, imaging techniques, and other protocol details. The survey was administered to DFP members using SurveyMonkey® (Surveymonkey.com). Descriptive statistical analyses were performed.

Results

Responses were received from 16 DFP institutions (3 non-USA, 2 pediatric); 15 (94%) were academic/university-based. 10 (63%) Institutions image most CD patients with MRE; 4 (25%) use CTE and MRE equally. Hypoperistaltic medication is given for MRE at 13 (81%) institutions versus only 2 (13%) institutions for CTE. Most institutions have a technologist or nurse monitor oral contrast material drinking (n = 12 for CTE, 75%; n = 11 for MRE, 69%). 2 (13%) institutions use only dual-energy capable scanners for CTE, while 9 (56%) use either a single-energy or dual-energy scanner based on availability. Axial CTE images are reconstructed at 2–3 mm thickness at 8 (50%) institutions, > 3 mm at 5 (31%), and < 2 mm at 3 (19%) institutions. 13 (81%) institutions perform MRE on either 1.5 or 3T scanners without preference. All institutions perform MRE multiphase postcontrast imaging (median = 4 phases), ranging from 20 to 600 s after contrast material injection.

Conclusion

CTE and MRE protocol knowledge from DFP institutions can help radiology practices optimize/standardize protocols, potentially improving image quality and patient outcomes, permitting objective comparisons between examinations, and facilitating research.

中文翻译：

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计算机断层扫描和磁共振肠造影协议和技术：腹部放射学学会克罗恩病疾病研究小组的调查

摘要

目的

要调查腹部放射学学会克罗恩病（CD）疾病专责小组（DFP）成员，以了解最新的CT / MR肠造影（CTE / MRE）方案以及机构之间的差异。

方法

该研究由机构审查委员会确定为“豁免”研究。该调查包括70个有关CTE / MRE患者准备，对比剂管理，成像技术和其他协议细节的问题。使用SurveyMonkey®（Surveymonkey.com）对DFP成员进行了调查。进行描述性统计分析。

结果

从16个DFP机构（3个非美国，2个儿科）收到了回复；15（94％）是基于学术/大学的。10个（63％）机构对大多数CD患者进行了MRE检查。4（25％）平均使用CTE和MRE。在13个（81％）机构对MRE进行了气动力学的药物治疗，而对CTE只有2个（13％）机构进行了气腹疗法。大多数机构都有技术专家或护士来监督口服造影剂的饮用（n  = 12（对于CTE，75％；n） = MRE为11，占69％）。2个（13％）机构仅使用具备双能扫描功能的CTE扫描仪，而9个（56％）则根据可用性使用单能或双能扫描仪。轴向CTE图像在8（50％）的机构中以2–3 mm的厚度重建，在5（31％）的情况下以> 3 mm的厚度重建，在3（19％）的机构中重建为<2 mm的厚度。13家（81％）机构不加选择地在1.5或3T扫描仪上执行MRE。所有机构在注射对比剂后20到600 s内执行MRE多相造影后成像（中位数= 4个阶段）。

结论

来自DFP机构的CTE和MRE协议知识可帮助放射学实践优化/标准化协议，潜在地改善图像质量和患者结果，允许在检查之间进行客观比较，并促进研究。