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Dillman JR, Anupindi SA, Dane B. Proposal of an Abbreviated Noncontrast MR Enterography Protocol for Patients With Crohn Disease. AJR Am J Roentgenol 2024; 222:e2330422. [PMID: 38054957 DOI: 10.2214/ajr.23.30422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2023]
Abstract
MR enterography (MRE) protocols used in patients with Crohn disease are burdened by long acquisition time, high cost, and suboptimal patient experience. For several indications, highly diagnostic MRE can be performed in five or fewer sequences, without IV contrast material or antiperistaltic medication and with an examination room time of less than 12 minutes. As such, MRE could be more patient friendly, more frequently performed, and require fewer health care resources.
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Affiliation(s)
- Jonathan R Dillman
- Department of Radiology, Cincinnati Children's Hospital Medical Center, University of Cincinnati, 3333 Burnet Ave, Cincinnati, OH 45229
| | - Sudha A Anupindi
- Department of Radiology, Children's Hospital of Philadelphia, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA
| | - Bari Dane
- Department of Radiology, NYU Langone Health, New York, NY
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Li X, Wu W, Yuan Y, Zhu Z, Liu X, Xiao D, Long X. CT energy spectral parameters of creeping fat in Crohn's disease and correlation with inflammatory activity. Insights Imaging 2024; 15:10. [PMID: 38228821 DOI: 10.1186/s13244-023-01592-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Accepted: 12/09/2023] [Indexed: 01/18/2024] Open
Abstract
OBJECTIVES Creeping fat is a kind of unique abnormal mesenteric tissue at the sites of diseased bowel of Crohn's disease. By using dual-energy CT enterography, this study aimed to evaluate the feasibility of spectral parameters in the quantitative analysis of mesenteric adipose tissue or creeping fat. METHODS In this study, patients with known or suspected Crohn's disease who underwent dual-energy CT enterography from March 1, 2019, to March 31, 2021, were enrolled. Among them, 40 patients with surgery and pathology-proven creeping fat were selected as the creeping fat Crohn's disease group, and 40 normal patients were selected as the control group. The quantitative spectral parameters including the slope of the Hounsfield unit curve, normalised fat-water concentration, normalised fat-iodine concentration, and normalised fat volume fraction at the enteric phases were obtained. Mann-Whitney U test, Kruskal-Wallis H test, and receiver operating characteristic curve analysis were applied to compare quantitative parameters among various groups. RESULTS A significant difference was observed in the slope of the Hounsfield unit curve, normalised fat-water concentration, normalised fat-iodine concentration, and normalised fat volume fraction between mesenteric adipose tissue and creeping fat with Crohn's disease at the enteric phase (all p < 0.001). The slope of the Hounsfield unit curve of creeping fat at the enteric phase had a better capability to distinguish inactive and active Crohn's disease (AUC = 0.93, p < 0.001). CONCLUSION Dual-energy CT enterography with quantitative spectral parameters is a potentially novel noninvasive tool for evaluating creeping fat in Crohn's disease. CRITICAL RELEVANCE STATEMENT Energy spectral parameters of creeping fat in Crohn's disease are significantly different from normal mesenteric adipose tissues and are correlated with inflammatory activity. KEY POINTS • Dual-energy CT enterography allows quantitatively assessing creeping fat with spectral parameters. • The creeping fat has distinct spectral parameters to normal mesenteric adipose. • The spectral parameters accurately differentiate active and inactive Crohn's disease.
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Affiliation(s)
- Xianchu Li
- Department of Radiology, The Second Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang, China
- Department of Radiology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, China
| | - Wei Wu
- Department of General Surgery, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Yan Yuan
- Department of Radiology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, China
| | - Zhiming Zhu
- Department of Radiology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, China
| | - Xiaowei Liu
- Department of Gastroenterology, Xiangya Hospital, Central South University, Changsha, China
| | - Desheng Xiao
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, China
| | - Xueying Long
- Department of Radiology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, China.
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China.
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Pierro A, Minordi LM, Larosa L, Guerri G, Grimaldi A, Quinto F, Rotondi F, Marcellino A, Bevere T, Basilico R, Iezzi R, Cilla S. Small Bowel Imaging from Stepchild of Roentgenology to MR Enterography: Part I: Guidance in Performing and Observing Normal and Abnormal Imaging Findings. Life (Basel) 2023; 13:1691. [PMID: 37629548 PMCID: PMC10455392 DOI: 10.3390/life13081691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 07/31/2023] [Accepted: 08/03/2023] [Indexed: 08/27/2023] Open
Abstract
MRE has become a standard imaging test for evaluating patients with small bowel pathology, but the indications, interpretation of imaging findings, methodology, and appropriate use must be standardized and widely known. Several signs of small bowel damage in inflammatory and non-inflammatory small bowel pathology include strictures, abscess, inflammatory activity, sinus tract, wall edema, fistula, mucosal lesions, and mesentery fat hypertrophy, all of which are widely and accurately explained by MRE. MRE is a non-invasive modality that accurately assesses the intra-luminal, parietal, and extra-luminal small bowel. The differential MRE appearance allows us to distinguish between different small bowel pathologies, such as neoplastic and non-neoplastic small bowel diseases. The purpose of this paper is to present the MRE technique, as well as the interpretation of imaging findings, through the approach of a rigorous stepwise methodology.
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Affiliation(s)
- Antonio Pierro
- Radiology Unit, San Timoteo Hospital, 86039 Termoli, Italy; (A.P.); (T.B.)
| | - Laura Maria Minordi
- Radiology Unit, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, 00168 Roma, Italy; (L.M.M.); (L.L.); (G.G.); (A.G.); (R.I.)
| | - Luigi Larosa
- Radiology Unit, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, 00168 Roma, Italy; (L.M.M.); (L.L.); (G.G.); (A.G.); (R.I.)
| | - Giulia Guerri
- Radiology Unit, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, 00168 Roma, Italy; (L.M.M.); (L.L.); (G.G.); (A.G.); (R.I.)
| | - Alessandro Grimaldi
- Radiology Unit, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, 00168 Roma, Italy; (L.M.M.); (L.L.); (G.G.); (A.G.); (R.I.)
| | - Fabio Quinto
- Angiography Unit, “L. Bonomo” Hospital, 70031 Andria, Italy;
| | - Fabio Rotondi
- Oncological Surgery Unit, Gemelli Molise Hospital, 86100 Campobasso, Italy;
| | | | - Teresa Bevere
- Radiology Unit, San Timoteo Hospital, 86039 Termoli, Italy; (A.P.); (T.B.)
| | - Raffaella Basilico
- Department of Neurosciences, Imaging and Clinical Studies, “Gabriele D’Annunzio” University, 66100 Chiety, Italy;
| | - Roberto Iezzi
- Radiology Unit, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, 00168 Roma, Italy; (L.M.M.); (L.L.); (G.G.); (A.G.); (R.I.)
| | - Savino Cilla
- Medical Physics Unit, Responsible Research Hospital, 86100 Campobasso, Italy
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Ingenerf M, Schmid-Tannwald C. [Magnetic resonance enterography/enteroclysis : Technical aspects and indications]. RADIOLOGIE (HEIDELBERG, GERMANY) 2023:10.1007/s00117-023-01149-0. [PMID: 37219729 DOI: 10.1007/s00117-023-01149-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Accepted: 04/13/2023] [Indexed: 05/24/2023]
Abstract
BACKGROUND Magnetic resonance enterography/enteroclysma (MRE) is an examination technique without ionizing radiation that allows assessment of bowel wall changes and extraluminal pathologies/complications such as in chronic inflammatory bowel diseases, among others. OBJECTIVES To discuss requirements for optimal MR imaging of the small bowel, technical basis of MRE and principles for the development and optimization of a MRE protocol, and clinical indications for this specific imaging technique. MATERIALS AND METHODS Guidelines, basic and review papers will be analyzed. RESULTS MRE enables the diagnosis of inflammatory bowel diseases and neoplasms and their evaluation during therapy. In addition to intra- and transmural changes, extramural pathologies and complications can also be detected. Standard sequences include steady-state free precession sequences, T2-weighted single-shot fast spin echo sequences, and three-dimensional (3D) T1-weighted gradient echo (GRE) sequences with fat saturation after contrast administration. Prior to image acquisition, optimal patient preparation and distension of the bowel using intraluminal contrast agents is necessary. CONCLUSIONS Careful patient preparation for MRE, understanding of optimal imaging technique, and appropriate clinical indications are essential to achieve high-quality images of the bowel for accurate assessment and diagnosis as well as therapy monitoring of small bowel disease.
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Affiliation(s)
- Maria Ingenerf
- Klinik und Poliklinik für Radiologie, Klinikum der Universität München, LMU München, Ziemssenstr. 5, 80336, München, Deutschland
| | - Christine Schmid-Tannwald
- Klinik und Poliklinik für Radiologie, Klinikum der Universität München, LMU München, Ziemssenstr. 5, 80336, München, Deutschland.
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Bohra A, Vasudevan A, Kutaiba N, Van Langenberg DR. Challenges and Strategies to Optimising the Quality of Small Bowel Magnetic Resonance Imaging in Crohn’s Disease. Diagnostics (Basel) 2022; 12:diagnostics12102533. [PMID: 36292222 PMCID: PMC9600769 DOI: 10.3390/diagnostics12102533] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 10/03/2022] [Accepted: 10/17/2022] [Indexed: 11/21/2022] Open
Abstract
Magnetic resonance enterography (MRE) is one of the most highly utilised tools in the assessment of patients with small bowel Crohn’s disease (CD). As a non-invasive modality, it has both patient and procedure-related advantages over ileocolonoscopy which is the current gold standard for Crohn’s disease activity assessment. MRE relies upon high-quality images to ensure accurate disease activity assessment; however, few studies have explored the impact of image quality on the accuracy of small bowel CD activity assessment. Bowel distension and motion artifacts are two key imaging parameters that impact the quality of images obtained through MRE. Multiple strategies have been employed to both minimise the effects of motion artifacts and improve bowel distension. This review discusses the definitions of bowel distension and motion artifacts within the literature with a particular focus on current strategies to improve bowel distension and limit motion artifacts in MRE.
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Affiliation(s)
- Anuj Bohra
- Department of Gastroenterology, Eastern Health, Box Hill 3128, Australia
- Correspondence:
| | - Abhinav Vasudevan
- Department of Gastroenterology, Eastern Health, Box Hill 3128, Australia
| | - Numan Kutaiba
- Department of Radiology, Eastern Health, Box Hill 3128, Australia
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Affiliation(s)
- Michael A Ohliger
- From the Department of Radiology and Biomedical Imaging, University of California, San Francisco, 505 Parnassus Ave, San Francisco, CA 94143
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Shazeeb MS. Editorial for "Bowel Wall Visualization Using MR Enterography in Relationship to Bowel Lumen Contents and Patient Demographics". J Magn Reson Imaging 2021; 54:737-738. [PMID: 33963803 DOI: 10.1002/jmri.27668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Accepted: 04/14/2021] [Indexed: 11/06/2022] Open
Affiliation(s)
- Mohammed Salman Shazeeb
- Department of Radiology, University of Massachusetts Medical School, Worcester, Massachusetts, 01655, USA.,Department of Biomedical Engineering, Worcester Polytechnic Institute, Worcester, Massachusetts, 01609, USA
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Zhang TT, Chang W, Wang ZJ, Sun DC, Ohliger MA, Yeh BM. Bowel Wall Visualization Using MR Enterography in Relationship to Bowel Lumen Contents and Patient Demographics. J Magn Reson Imaging 2021; 54:728-736. [DOI: 10.1002/jmri.27589] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 02/16/2021] [Accepted: 02/17/2021] [Indexed: 12/20/2022] Open
Affiliation(s)
- Ting Ting Zhang
- Department of Radiology and Biomedical Imaging UCSF Medical Center San Francisco California USA
- Department of Radiology Xinhua Hospital, Shanghai Jiao Tong University School of Medicine Shanghai China
| | - Wei‐Chou Chang
- Department of Radiology and Biomedical Imaging UCSF Medical Center San Francisco California USA
- Department of Radiology Tri‐Service General Hospital, National Defense Medical Center Taipei Taiwan
| | - Zhen Jane Wang
- Department of Radiology and Biomedical Imaging UCSF Medical Center San Francisco California USA
| | - Derek C. Sun
- Department of Radiology and Biomedical Imaging UCSF Medical Center San Francisco California USA
| | - Michael A. Ohliger
- Department of Radiology and Biomedical Imaging UCSF Medical Center San Francisco California USA
| | - Benjamin M. Yeh
- Department of Radiology and Biomedical Imaging UCSF Medical Center San Francisco California USA
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Chatterji M, Fidler JL, Taylor SA, Anupindi SA, Yeh BM, Guglielmo FF. State of the Art MR Enterography Technique. Top Magn Reson Imaging 2021; 30:3-11. [PMID: 33528207 DOI: 10.1097/rmr.0000000000000263] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
ABSTRACT Magnetic resonance enterography (MRE) is a well-established imaging technique that is commonly used for evaluating a variety of bowel diseases, most commonly inflammatory bowel disease which is increasing in prevalence. Inflammatory bowel disease is composed of 2 related, but distinct disease entities: Crohn disease (CD) and ulcerative colitis. In ulcerative colitis, inflammation is generally limited to the mucosa and invariably involves the rectum, and often the more proximal colon. CD is typified by transmural inflammation with skip lesions occurring anywhere from the mouth to anus, but characteristically involves the terminal ileum. The transmural involvement of CD may lead to debilitating ulceration and, ultimately, development of sinus tracts, which can be associated with abscesses and fistulae as extraenteric manifestations of the disease. Because much of the small bowel and extraenteric disease cannot be adequately assessed with conventional endoscopy, imaging plays a crucial role in initial diagnosis and follow-up. MRE does not use ionizing radiation which is important for these patients, many of which present earlier in life and may require multiple imaging examinations. In this article, we review the clinical indications, patient preparation, and optimal technique for MRE. We also discuss the role and proper selection of intravenous gadolinium-based contrast material, oral contrast material, and antiperistaltic agents, including pediatric considerations. Finally, we review the recommended and optional pulse sequence selection, including discussion of a "time-efficient" protocol, reviewing their utility, advantages, and limitations. Our hope is to aid the radiologist seeking to develop a robust MRE imaging program for the evaluation of bowel disease.
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Affiliation(s)
- Manjil Chatterji
- Department of Radiology, Weill Cornell College of Medicine, New York, NY
| | | | - Stuart A Taylor
- Centre for Medical Imaging, University College London, London, UK
| | - Sudha A Anupindi
- Department of Radiology, The Children's Hospital of Philadelphia, Philadelphia, PA
| | - Benjamin M Yeh
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, CA
| | - Flavius F Guglielmo
- Department of Radiology, Thomas Jefferson University Hospital, Philadelphia, PA
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MRI of Inflammatory Bowel Disease. Top Magn Reson Imaging 2021; 30:1-2. [PMID: 33528206 DOI: 10.1097/rmr.0000000000000265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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