Imaging Institute, Cleveland Clinic, 9500 Euclid Ave/L10, Cleveland, OH, 44195, USA.
Department of Radiology, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH, USA.
Abdom Radiol (NY). 2020 Apr;45(4):1011-1017. doi: 10.1007/s00261-020-02407-8.
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.
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.
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.
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.
调查美国腹部放射学会（SABR）克罗恩病（CD）疾病重点专家组（DFP）成员，了解 CT/MR 肠造影术（CTE/MRE）的最新技术和不同机构之间的差异。
本研究经机构审查委员会确定为“豁免”研究。该调查由 70 个关于 CTE/MRE 患者准备、造影剂给药、成像技术和其他方案细节的问题组成。该调查通过 SurveyMonkey®（Surveymonkey.com）向 DFP 成员进行。采用描述性统计分析。
收到了来自 16 个 DFP 机构（3 个非美国，2 个儿科）的回复；15 个（94%）为学术/大学为基础的机构。10 个（63%）机构对大多数 CD 患者进行 MRE 成像；4 个（25%）机构平等使用 CTE 和 MRE。13 个（81%）机构在 MRE 中给予低蠕动药物，而只有 2 个（13%）机构在 CTE 中给予低蠕动药物。大多数机构都有技术员或护士监测口服造影剂的摄入（CTE 为 12 个，占 75%；MRE 为 11 个，占 69%）。2 个（13%）机构仅使用具有双能能力的扫描仪进行 CTE，而 9 个（56%）机构根据可用性使用单能或双能扫描仪。8 个（50%）机构的 CTE 轴位图像重建厚度为 2-3mm，5 个（31%）为>3mm，3 个（19%）为<2mm。13 个（81%）机构在 1.5T 或 3T 扫描仪上进行 MRE，没有偏好。所有机构都进行 MRE 多期对比后成像（中位数=4 期），在对比剂注射后 20-600s 进行。
DFP 机构的 CTE 和 MRE 方案知识可以帮助放射科实践优化/标准化方案，有可能提高图像质量和患者结局，允许对检查进行客观比较，并促进研究。
