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Evrard R, Manon J, Rafferty C, Fieve L, Cornu O, Kirchgesner T, Lecouvet FE, Schubert T, Lengele B. Vascular study of decellularized porcine long bones: Characterization of a tissue engineering model. Bone 2024; 182:117073. [PMID: 38493932 DOI: 10.1016/j.bone.2024.117073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Revised: 03/12/2024] [Accepted: 03/14/2024] [Indexed: 03/19/2024]
Abstract
INTRODUCTION Massive bone allografts enable the reconstruction of critical bone defects in numerous conditions (e.g. tumoral, infection or trauma). Unfortunately, their biological integration remains insufficient and the reconstruction may suffer from several postoperative complications. Perfusion-decellularization emerges as a tissue engineering potential solution to enhance osseointegration. Therefore, an intrinsic vascular study of this novel tissue engineering tool becomes essential to understand its efficacy and applicability. MATERIAL AND METHODS 32 porcine long bones (humeri and femurs) were used to assess the quality of their vascular network prior and after undergoing a perfusion-decellularization protocol. 12 paired bones were used to assess the vascular matrix prior (N = 6) and after our protocol (N = 6) by immunohistochemistry. Collagen IV, Von Willebrand factor and CD31 were targeted then quantified. The medullary macroscopic vascular network was evaluated with 12 bones: 6 were decellularized and the other 6 were, as control, not treated. All 12 underwent a contrast-agent injection through the nutrient artery prior an angio CT-scan acquisition. The images were processed and the length of medullary vessels filled with contrast agent were measured on angiographic cT images obtained in control and decellularized bones by 4 independent observers to evaluate the vascular network preservation. The microscopic cortical vascular network was evaluated on 8 bones: 4 control and 4 decellularized. After injection of gelatinous fluorochrome mixture (calcein green), non-decalcified fluoroscopic microscopy was performed in order to assess the perfusion quality of cortical vascular lacunae. RESULTS The continuity of the microscopic vascular network was assessed with Collagen IV immunohistochemistry (p-value = 0.805) while the decellularization quality was observed through CD31 and Von Willebrand factor immunohistochemistry (p-values <0.001). The macroscopic vascular network was severely impaired after perfusion-decellularization; nutrient arteries were still patent but the amount of medullary vascular channels measured was significantly higher in the control group compared to the decellularized group (p-value <0.001). On average, the observers show good agreement on these results, except in the decellularized group where more inter-observer discrepancies were observed. The microscopic vascular network was observed with green fluoroscopic signal in almost every canals and lacunae of the bone cortices, in three different bone locations (proximal metaphysis, diaphysis and distal metaphysis). CONCLUSION Despite the aggressiveness of the decellularization protocol on medullary vessels, total porcine long bones decellularized by perfusion retain an acellular cortical microvascular network. By injection through the intact nutrient arteries, this latter vascular network can still be used as a total bone infusion access for bone tissue engineering in order to enhance massive bone allografts prior implantation.
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Affiliation(s)
- R Evrard
- Institut de Recherche Expérimentale et Clinique, Neuro Musculo-Skeletal Lab, Université Catholique de Louvain (UCLouvain), Avenue E. Mounier, 52-B1.52.04, 1200 Bruxelles, Belgium; Service de Chirurgie Orthopédique et Traumatologique, Cliniques Universitaires Saint-Luc, UCLouvain, Avenue Hippocrate 10, 1200 Bruxelles, Belgium.
| | - J Manon
- Institut de Recherche Expérimentale et Clinique, Neuro Musculo-Skeletal Lab, Université Catholique de Louvain (UCLouvain), Avenue E. Mounier, 52-B1.52.04, 1200 Bruxelles, Belgium; Service de Chirurgie Orthopédique et Traumatologique, Cliniques Universitaires Saint-Luc, UCLouvain, Avenue Hippocrate 10, 1200 Bruxelles, Belgium
| | - C Rafferty
- Institut de Recherche Expérimentale et Clinique, Pôle Morphologie, UCLouvain, Avenue E. Mounier, 52-B1.52.04, 1200 Bruxelles, Belgium
| | - L Fieve
- Institut de Recherche Expérimentale et Clinique, Pôle Morphologie, UCLouvain, Avenue E. Mounier, 52-B1.52.04, 1200 Bruxelles, Belgium
| | - O Cornu
- Institut de Recherche Expérimentale et Clinique, Neuro Musculo-Skeletal Lab, Université Catholique de Louvain (UCLouvain), Avenue E. Mounier, 52-B1.52.04, 1200 Bruxelles, Belgium; Service de Chirurgie Orthopédique et Traumatologique, Cliniques Universitaires Saint-Luc, UCLouvain, Avenue Hippocrate 10, 1200 Bruxelles, Belgium; Unité de Thérapie Tissulaire et Cellulaire de l'Appareil Locomoteur, Cliniques Universitaires Saint-Luc, Avenue Hippocrate 10, 1200 Bruxelles, Belgium
| | - T Kirchgesner
- Département d'Imagerie Médicale, Institut de Recherche Expérimentale et Clinique (Pôle IMAG), Cliniques Universitaires Saint-Luc, UCLouvain, Avenue Hippocrate 10, 1200 Bruxelles, Belgium
| | - F E Lecouvet
- Département d'Imagerie Médicale, Institut de Recherche Expérimentale et Clinique (Pôle IMAG), Cliniques Universitaires Saint-Luc, UCLouvain, Avenue Hippocrate 10, 1200 Bruxelles, Belgium
| | - T Schubert
- Institut de Recherche Expérimentale et Clinique, Neuro Musculo-Skeletal Lab, Université Catholique de Louvain (UCLouvain), Avenue E. Mounier, 52-B1.52.04, 1200 Bruxelles, Belgium; Service de Chirurgie Orthopédique et Traumatologique, Cliniques Universitaires Saint-Luc, UCLouvain, Avenue Hippocrate 10, 1200 Bruxelles, Belgium; Unité de Thérapie Tissulaire et Cellulaire de l'Appareil Locomoteur, Cliniques Universitaires Saint-Luc, Avenue Hippocrate 10, 1200 Bruxelles, Belgium
| | - B Lengele
- Institut de Recherche Expérimentale et Clinique, Pôle Morphologie, UCLouvain, Avenue E. Mounier, 52-B1.52.04, 1200 Bruxelles, Belgium; Service de Chirurgie Plastique, Reconstructrice et Esthétique, Cliniques Universitaires Saint-Luc, UCLouvain, Avenue Hippocrate 10, 1200 Bruxelles, Belgium
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d’Abadie P, Gheysens O, Lhommel R, Jamar F, Kirchgesner T, Mazzeo F, Coubeau L, Yildiz H, De Roo AK, Schubert T. Diagnostic Superiority of Dual-Time Point [ 18F]FDG PET/CT to Differentiate Malignant from Benign Soft Tissue Tumors. Diagnostics (Basel) 2023; 13:3202. [PMID: 37892023 PMCID: PMC10606132 DOI: 10.3390/diagnostics13203202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 10/09/2023] [Accepted: 10/10/2023] [Indexed: 10/29/2023] Open
Abstract
[18F]FDG PET/CT is used in the workup of indeterminate soft tissue tumors (STTs) but lacks accuracy in the detection of malignant STTs. The aim of this study is to evaluate whether dual-time point [18F]FDG PET/CT imaging (DTPI) can be useful in this indication. In this prospective study, [18F]FDG PET/CT imaging was performed 1 h (t1) and 3 h (t2) after injection. Tumor uptake (SUVmax) was calculated at each time point to define a retention index (RI) corresponding to the variation between t1 and t2 (%). Sixty-eight patients were included, representing 20 benign and 48 malignant tumors (including 40 sarcomas). The RI was significantly higher in malignant STTs than in benign STTs (median: +21.8% vs. -2%, p < 0.001). An RI of >14.3% predicted STT malignancy with a specificity (Sp) of 90% and a sensitivity (Se) of 69%. An SUVmaxt1 of >4.5 was less accurate with an Sp of 80% and an Se of 60%. In a subgroup of tumors with at least mild [18F]FDG uptake (SUVmax ≥ 3; n = 46), the RI significantly outperformed the diagnostic accuracy of SUVmax (AUC: 0.88 vs. 0.68, p = 0.01). DTPI identifies malignant STT tumors with high specificity and outperforms the diagnostic accuracy of standard PET/CT.
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Affiliation(s)
- Philippe d’Abadie
- Department of Nuclear Medicine, Cliniques Universitaires Saint Luc-Institut Roi Albert II, Université Catholique de Louvain, 1200 Brussels, Belgium; (O.G.); (R.L.); (F.J.)
| | - Olivier Gheysens
- Department of Nuclear Medicine, Cliniques Universitaires Saint Luc-Institut Roi Albert II, Université Catholique de Louvain, 1200 Brussels, Belgium; (O.G.); (R.L.); (F.J.)
| | - Renaud Lhommel
- Department of Nuclear Medicine, Cliniques Universitaires Saint Luc-Institut Roi Albert II, Université Catholique de Louvain, 1200 Brussels, Belgium; (O.G.); (R.L.); (F.J.)
| | - François Jamar
- Department of Nuclear Medicine, Cliniques Universitaires Saint Luc-Institut Roi Albert II, Université Catholique de Louvain, 1200 Brussels, Belgium; (O.G.); (R.L.); (F.J.)
| | - Thomas Kirchgesner
- Department of Radiology, Cliniques Universitaires Saint Luc-Institut Roi Albert II, Université Catholique de Louvain, 1200 Brussels, Belgium;
| | - Filomena Mazzeo
- Department of Clinical Oncology, Cliniques Universitaires Saint Luc-Institut Roi Albert II, Université Catholique de Louvain, 1200 Brussels, Belgium;
| | - Laurent Coubeau
- Department of Abdominal Surgery, Cliniques Universitaires Saint Luc-Institut Roi Albert II, Université Catholique de Louvain, 1200 Brussels, Belgium;
| | - Halil Yildiz
- Department of Internal Medicine, Cliniques Universitaires Saint Luc-Institut Roi Albert II, Université Catholique de Louvain, 1200 Brussels, Belgium;
| | - An-Katrien De Roo
- Department of Pathology, Cliniques Universitaires Saint Luc-Institut Roi Albert II, Université Catholique de Louvain, 1200 Brussels, Belgium;
| | - Thomas Schubert
- Department of Orthopedic Surgery, Cliniques Universitaires Saint Luc-Institut Roi Albert II, Université Catholique de Louvain, 1200 Brussels, Belgium;
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Malghem J, Lecouvet F, Vande Berg B, Kirchgesner T, Omoumi P. Subchondral insufficiency fractures, subchondral insufficiency fractures with osteonecrosis, and other apparently spontaneous subchondral bone lesions of the knee-pathogenesis and diagnosis at imaging. Insights Imaging 2023; 14:164. [PMID: 37782395 PMCID: PMC10545656 DOI: 10.1186/s13244-023-01495-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Accepted: 07/17/2023] [Indexed: 10/03/2023] Open
Abstract
Subchondral insufficiency fractures (SIFs) and SIFs with osteonecrosis (SIF-ONs) of the knee (previously misnamed spontaneous osteonecrosis of the knee (SONK)) are bone lesions that appear without prior traumatic, tumoral, or inflammatory event.Both conditions are characterized in the early stages by epiphyseal bone marrow edema (BME)-like signal at MRI. However, while SIFs usually heal spontaneously, they can also evolve to osteonecrosis (i.e., SIF-ON), which may progress to an irreversible collapse of the articular surface. Careful analysis of other MRI signs may help differentiate the two conditions in the early phase. In SIFs, the BME edema-like signal extends to the area immediately adjacent to the subchondral plate, while in SIF-ONs, this subchondral area shows low signal intensity on fluid-sensitive MR images due to altered bone marrow. The thickness and length of subchondral areas with low fluid-sensitive signal intensity are important factors that determine the prognosis of SIF-ONs. If they are thicker than 4 mm or longer than 14 mm, the prognosis is poor. The differential diagnosis of SIFs and SIF-ONs include bone lesions associated with the "complex regional pain syndrome" (CRPS), epiphyseal osteonecrosis of systemic origin, and those related to cartilage pathology.Clinical relevance statement Imaging plays an essential role in diagnosing subchondral insufficiency fractures (SIFs) from subchondral insufficiency fractures with osteonecrosis (SIF-ONs) and collapse, as well as in distinguishing them from other spontaneous knee subchondral bone lesions presenting with bone marrow edema-like signal.Key points• Subchondral insufficiency fractures may affect the knee, especially in older adults.• Subchondral insufficiency fractures usually heal spontaneously.• Sometimes, subchondral osteonecrosis and collapse may complicate subchondral insufficiency fractures.• Bone marrow-like edema is an aspecific sign seen in all these lesions.• Degraded marrow in osteonecrosis complicating fractures is hypointense on fluid-sensitive sequences.
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Affiliation(s)
- Jacques Malghem
- Department of Radiology, Cliniques Universitaires Saint-Luc, UCLouvain, Avenue Hippocrate 10, 1200, Brussels, Belgium
| | - Frédéric Lecouvet
- Department of Radiology, Cliniques Universitaires Saint-Luc, UCLouvain, Avenue Hippocrate 10, 1200, Brussels, Belgium
| | - Bruno Vande Berg
- Department of Medical Imaging, Clinique CHC Montlégia, Boulevard Patience Et Beaujonc 2, 4000, Liège, Belgium
| | - Thomas Kirchgesner
- Department of Radiology, Cliniques Universitaires Saint-Luc, UCLouvain, Avenue Hippocrate 10, 1200, Brussels, Belgium
| | - Patrick Omoumi
- Department of Diagnostic and Interventional Radiology, Lausanne University Hospital (CHUV) and University of Lausanne, Rue du Bugnon 46, 1010, Lausanne, Switzerland.
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Hoornaert E, Kirchgesner T, Hammer J, De Roo AK, Yildiz H, Néel A. [Myalgia and fever in a 35-year-old woman]. Rev Med Interne 2023; 44:575-578. [PMID: 37302875 DOI: 10.1016/j.revmed.2023.06.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Accepted: 06/04/2023] [Indexed: 06/13/2023]
Affiliation(s)
- E Hoornaert
- Service de médecine interne et maladies infectieuses, cliniques universitaires Saint-Luc, 10, avenue Hippocrate, 1200 Bruxelles, Belgique.
| | - T Kirchgesner
- Service de radiologie, cliniques universitaires Saint-Luc, 10, avenue Hippocrate, 1200 Bruxelles, Belgique
| | - J Hammer
- Service de chirurgie plastique, cliniques universitaires Saint-Luc, 10, avenue Hippocrate, 1200 Bruxelles, Belgique
| | - A-K De Roo
- Service d'anatomopathologie, cliniques universitaires Saint-Luc, 10, avenue Hippocrate, 1200 Bruxelles, Belgique
| | - H Yildiz
- Service de médecine interne et maladies infectieuses, cliniques universitaires Saint-Luc, 10, avenue Hippocrate, 1200 Bruxelles, Belgique
| | - A Néel
- Service de médecine interne, CHU de Nantes, 1, place Alexis-Ricordeau, 44093 Nantes cedex 1, France
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Dion B, Lacrosse R, Michoux N, Stoenoiu M, Durez P, Lecouvet F, Kirchgesner T. Comparison between 2D FSE T2-weighted Dixon MRI and contrast-enhanced 2D FSE and 3D FSPGR T1-weighted Dixon MRI to quantify inflammation in hands of patients with early rheumatoid arthritis. Diagn Interv Imaging 2023; 104:351-358. [PMID: 36997374 DOI: 10.1016/j.diii.2023.03.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2023] [Revised: 03/04/2023] [Accepted: 03/13/2023] [Indexed: 03/30/2023]
Abstract
PURPOSE The purpose of this study was to compare two-dimensional (2D) T2-weighted, contrast-enhanced 2D T1-weighted and contrast-enhanced three-dimensional (3D) T1-weighted Dixon MRI sequences to assess disease activity using the RAMRIS scoring system in hands of patients with early rheumatoid arthritis. MATERIALS AND METHODS Twenty-five patients (19 women, 6 men; mean age 51.4 years ± 12.7 years [SD], age range: 28-70 years) with rheumatoid arthritis prospectively underwent MRI examination of both hands at 1.5 T using 2D fast spin-echo (FSE) T2-weighted, contrast-enhanced 2D FSE T1-weighted and contrast-enhanced 3D fast spoiled gradient echo (FSPGR) T1-weighted Dixon sequences. Three radiologists independently assessed disease activity according to RAMRIS using Dixon water-only and fat-only images. Intraclass correlation coefficients (ICC) were calculated to assess inter-technique and interobserver agreements. RESULTS Agreement to assess total RAMRIS score was very good between the MRI protocols (mean ICC ranging from 0.81 to 0.93) and between readers (mean ICC ranging from 0.91 to 0.94). Mean total RAMRIS scores of the three readers were significantly greater with contrast-enhanced 3D FSPGR T1-weighted (42.73 ± 29.39) than with contrast-enhanced 2D FSE T1-weighted (35.81 ± 25.48) and 2D FSE T2-weighted (32.20 ± 25.06) Dixon sequences. CONCLUSION 2D FSE T2-weighted, contrast-enhanced 2D FSE T1-weighted Dixon and contrast-enhanced 3D FSPGR T1-weighted Dixon protocols are reproducible alternatives for the RAMRIS scoring in hands of patients with early rheumatoid arthritis. Coupling contrast-enhanced 3D FSPGR T1-weighted and 2D FSE T2-weighted sequences might be the most efficient option to completely assess the rheumatoid arthritis -related synovial and bone changes with the Dixon method.
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Affiliation(s)
- Brice Dion
- Department of Medical Imaging - Musculoskeletal Imaging Unit, Cliniques universitaires Saint-Luc, Université Catholique de Louvain, Institut de Recherche Expérimentale et Clinique (IREC), 1200 Brussels, Belgium
| | - Romain Lacrosse
- Department of Medical Imaging - Musculoskeletal Imaging Unit, Cliniques universitaires Saint-Luc, Université Catholique de Louvain, Institut de Recherche Expérimentale et Clinique (IREC), 1200 Brussels, Belgium
| | - Nicolas Michoux
- Department of Medical Imaging - Musculoskeletal Imaging Unit, Cliniques universitaires Saint-Luc, Université Catholique de Louvain, Institut de Recherche Expérimentale et Clinique (IREC), 1200 Brussels, Belgium
| | - Maria Stoenoiu
- Department of Rheumatology - Cliniques universitaires Saint-Luc, Université Catholique de Louvain, Institut de Recherche Expérimentale et Clinique (IREC), 1200 Brussels, Belgium
| | - Patrick Durez
- Department of Rheumatology - Cliniques universitaires Saint-Luc, Université Catholique de Louvain, Institut de Recherche Expérimentale et Clinique (IREC), 1200 Brussels, Belgium
| | - Frédéric Lecouvet
- Department of Medical Imaging - Musculoskeletal Imaging Unit, Cliniques universitaires Saint-Luc, Université Catholique de Louvain, Institut de Recherche Expérimentale et Clinique (IREC), 1200 Brussels, Belgium
| | - Thomas Kirchgesner
- Department of Medical Imaging - Musculoskeletal Imaging Unit, Cliniques universitaires Saint-Luc, Université Catholique de Louvain, Institut de Recherche Expérimentale et Clinique (IREC), 1200 Brussels, Belgium.
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Lecouvet FE, Vekemans MC, Van Den Berghe T, Verstraete K, Kirchgesner T, Acid S, Malghem J, Wuts J, Hillengass J, Vandecaveye V, Jamar F, Gheysens O, Vande Berg BC. Imaging of treatment response and minimal residual disease in multiple myeloma: state of the art WB-MRI and PET/CT. Skeletal Radiol 2022; 51:59-80. [PMID: 34363522 PMCID: PMC8626399 DOI: 10.1007/s00256-021-03841-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 05/28/2021] [Accepted: 06/06/2021] [Indexed: 02/02/2023]
Abstract
Bone imaging has been intimately associated with the diagnosis and staging of multiple myeloma (MM) for more than 5 decades, as the presence of bone lesions indicates advanced disease and dictates treatment initiation. The methods used have been evolving, and the historical radiographic skeletal survey has been replaced by whole body CT, whole body MRI (WB-MRI) and [18F]FDG-PET/CT for the detection of bone marrow lesions and less frequent extramedullary plasmacytomas.Beyond diagnosis, imaging methods are expected to provide the clinician with evaluation of the response to treatment. Imaging techniques are consistently challenged as treatments become more and more efficient, inducing profound response, with more subtle residual disease. WB-MRI and FDG-PET/CT are the methods of choice to address these challenges, being able to assess disease progression or response and to detect "minimal" residual disease, providing key prognostic information and guiding necessary change of treatment.This paper provides an up-to-date overview of the WB-MRI and PET/CT techniques, their observations in responsive and progressive disease and their role and limitations in capturing minimal residual disease. It reviews trials assessing these techniques for response evaluation, points out the limited comparisons between both methods and highlights their complementarity with most recent molecular methods (next-generation flow cytometry, next-generation sequencing) to detect minimal residual disease. It underlines the important role of PET/MRI technology as a research tool to compare the effectiveness and complementarity of both methods to address the key clinical questions.
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Affiliation(s)
- Frederic E. Lecouvet
- Radiology Department, Institut de Recherche Expérimentale et Clinique (IREC), Cliniques Universitaires Saint-Luc, UCLouvain, Hippocrate Avenue 10, 1200 Brussels, Belgium
| | - Marie-Christiane Vekemans
- Haematology Unit, Cliniques Universitaires Saint-Luc, Institut de Recherche Expérimentale et Clinique (IREC), 1200 Brussels, Belgium
| | - Thomas Van Den Berghe
- Radiology Department, Universiteit Ghent, Sint-Pietersnieuwstraat 33, 9000 Gent, Belgium
| | - Koenraad Verstraete
- Radiology Department, Universiteit Ghent, Sint-Pietersnieuwstraat 33, 9000 Gent, Belgium
| | - Thomas Kirchgesner
- Radiology Department, Institut de Recherche Expérimentale et Clinique (IREC), Cliniques Universitaires Saint-Luc, UCLouvain, Hippocrate Avenue 10, 1200 Brussels, Belgium
| | - Souad Acid
- Radiology Department, Institut de Recherche Expérimentale et Clinique (IREC), Cliniques Universitaires Saint-Luc, UCLouvain, Hippocrate Avenue 10, 1200 Brussels, Belgium
| | - Jacques Malghem
- Radiology Department, Institut de Recherche Expérimentale et Clinique (IREC), Cliniques Universitaires Saint-Luc, UCLouvain, Hippocrate Avenue 10, 1200 Brussels, Belgium
| | - Joris Wuts
- Department of Electronics and Informatics (ETRO), Vrije Universiteit Brussel, Avenue du Laerbeek 101, 1090 Jette, Belgium
| | - Jens Hillengass
- Departement of Medicine, Myeloma Unit, Park Comprehensive Cancer Center, Buffalo, NY USA
| | - Vincent Vandecaveye
- Radiology Department, Katholieke Univesiteit Leuven, Oude Markt, 13, 3000 Leuven, Belgium
| | - François Jamar
- Nuclear Medicine Department, Institut de Recherche Expérimentale et Clinique (IREC), Cliniques Universitaires Saint-Luc, 1200 Brussels, Belgium
| | - Olivier Gheysens
- Nuclear Medicine Department, Institut de Recherche Expérimentale et Clinique (IREC), Cliniques Universitaires Saint-Luc, 1200 Brussels, Belgium
| | - Bruno C. Vande Berg
- Radiology Department, Institut de Recherche Expérimentale et Clinique (IREC), Cliniques Universitaires Saint-Luc, UCLouvain, Hippocrate Avenue 10, 1200 Brussels, Belgium
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Vande Berg BC, Kirchgesner T, Acid S, Malghem J, Vekemans MC, Lecouvet FE. Diffuse vertebral marrow changes at MRI: Multiple myeloma or normal? Skeletal Radiol 2022; 51:89-99. [PMID: 34550397 DOI: 10.1007/s00256-021-03886-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 07/27/2021] [Accepted: 07/27/2021] [Indexed: 02/02/2023]
Abstract
Five MRI patterns of marrow involvement (diffuse, focal, combined diffuse and focal, variegated, and normal) are observed in patients with a marrow proliferative disorder including MM. The wide range of marrow involvement patterns in monoclonal plasma cell proliferative disorders mirrors that of their natural histories that can vary from indolent to rapidly lethal. MRI of the axial bone marrow contributes to stage these disorders, but it should not be obtained for disease detection and characterization because of its limited specificity and sensitivity. At MRI, diffuse benign hematopoietic marrow hyperplasia and marrow heterogeneities in elderly patients mimic the diffuse and variegated patterns observed in MM patients. Careful analysis of fat- and fluid-sensitive MR images and quantitative marrow assessment by using MRI and FDG-PET can contribute in differentiating these changes from those associated with neoplastic marrow infiltration, with some residual overlapping findings.
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Affiliation(s)
- B C Vande Berg
- Department of Radiology, IREC, Saint Luc University Hospital, Université Catholique de Louvain, Hippocrate Avenue 10/2942, 1200, Brussels, Belgium.
| | - T Kirchgesner
- Department of Radiology, IREC, Saint Luc University Hospital, Université Catholique de Louvain, Hippocrate Avenue 10/2942, 1200, Brussels, Belgium
| | - S Acid
- Department of Radiology, IREC, Saint Luc University Hospital, Université Catholique de Louvain, Hippocrate Avenue 10/2942, 1200, Brussels, Belgium
| | - J Malghem
- Department of Radiology, IREC, Saint Luc University Hospital, Université Catholique de Louvain, Hippocrate Avenue 10/2942, 1200, Brussels, Belgium
| | - M C Vekemans
- Department of Hematology, IREC, Saint Luc University Hospital, Université Catholique de Louvain, Hippocrate Avenue 10/2942, 1200, Brussels, Belgium
| | - F E Lecouvet
- Department of Radiology, IREC, Saint Luc University Hospital, Université Catholique de Louvain, Hippocrate Avenue 10/2942, 1200, Brussels, Belgium
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Pasoglou V, Van Nieuwenhove S, Peeters F, Duchêne G, Kirchgesner T, Lecouvet FE. 3D Whole-Body MRI of the Musculoskeletal System. Semin Musculoskelet Radiol 2021; 25:441-454. [PMID: 34547810 DOI: 10.1055/s-0041-1730401] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
With its outstanding soft tissue contrast, spatial resolution, and multiplanar capacities, magnetic resonance imaging (MRI) has become a widely used technique. Whole-body MRI (WB-MRI) has been introduced among diagnostic methods for the staging and follow-up assessment in oncologic patients, and international guidelines recommend its use. In nononcologic applications, WB-MRI is as a promising imaging tool in inflammatory diseases, such as seronegative arthritis and inflammatory myopathies. Technological advances have facilitated the introduction of three-dimensional (3D) almost isotropic sequences in MRI examinations covering the whole body. The possibility to reformat 3D images in any plane with equal or almost equal resolution offers comprehensive understanding of the anatomy, easier disease detection and characterization, and finally contributes to correct treatment planning. This article illustrates the basic principles, advantages, and limitations of the 3D approach in WB-MRI examinations and provides a short review of the literature.
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Affiliation(s)
- Vassiliki Pasoglou
- Department of Radiology and Medical Imaging, Cliniques Universitaires Saint-Luc, Institut de Recherche Expérimentale et Clinique, Université Catholique de Louvain, Brussels, Belgium
| | - Sandy Van Nieuwenhove
- Department of Radiology and Medical Imaging, Cliniques Universitaires Saint-Luc, Institut de Recherche Expérimentale et Clinique, Université Catholique de Louvain, Brussels, Belgium
| | - Frank Peeters
- Department of Radiology and Medical Imaging, Cliniques Universitaires Saint-Luc, Institut de Recherche Expérimentale et Clinique, Université Catholique de Louvain, Brussels, Belgium
| | - Gaetan Duchêne
- MR applications, General Electric Healthcare, Diegem, Belgium
| | - Thomas Kirchgesner
- Department of Radiology and Medical Imaging, Cliniques Universitaires Saint-Luc, Institut de Recherche Expérimentale et Clinique, Université Catholique de Louvain, Brussels, Belgium
| | - Frederic E Lecouvet
- Department of Radiology and Medical Imaging, Cliniques Universitaires Saint-Luc, Institut de Recherche Expérimentale et Clinique, Université Catholique de Louvain, Brussels, Belgium
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Kirchgesner T, Stoenoiu M, Michoux N, Libouton X, Houssiau F, Vande Berg B. Instability of the extensor digitorum tendons in Jaccoud arthropathy assessed by semi-dynamic MRI of the metacarpophalangeal joints. Diagn Interv Imaging 2021; 102:553-559. [PMID: 33903055 DOI: 10.1016/j.diii.2021.03.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 03/29/2021] [Accepted: 03/31/2021] [Indexed: 11/28/2022]
Abstract
PURPOSE The purpose of this study was to test the hypothesis that Jaccoud arthropathy (JA) in patients with systemic lupus erythematosus (SLE) is associated with instability of the extensor digitorum (ED) tendons during flexion of the metacarpophalangeal (MCP) joints by comparing the position of the ED tendons between SLE patients with JA and control subjects on hand MRI obtained with flexed and extended MCP joints. MATERIALS AND METHODS Thirty-two hands of SLE patients with JA (13 women and 3 men; mean age, 50.0±12.2 [SD] years; age range: 26-68years) and 24 hands of sex- and age-matched control subjects (20 women and 4 men; mean age, 50.1±13.0 [SD] years; age range: 24-68years) were included in the study. Axial spin echo T1-weighted MRI images of the second to fifth MCP joints in flexion and in extension were obtained. Two radiologists (R1 and R2) separately measured the amplitude and assessed the direction of the displacement of the ED tendons with respect to the midline at the level of each MCP joint. Statistical analysis included two-way ANOVA with random effects to assess differences in amplitude and Fisher-Freeman-Halton exact test to assess differences in direction with P-values<0.0083 and<0.0063 considered as statistically significant respectively. RESULTS Amplitude of the displacement of the ED tendons was statistically significantly greater in SLE patients with JA than in control subjects in flexion for both readers (median 58°, 95% confidence interval [CI]: 50°-65° vs. 20°, 95% CI: 16°-24°; P<0.0001 for R1 and 54°, 95% CI: 47°-61° vs. 25°, 95% CI: 22°-28°; P<0.0001 for R2) and in extension for one reader (17°, 95% CI: 15°-20° vs. 14°, 95% CI: 11°-16°; P=0.0048 for R1 and 20°, 95% CI: 15°-25° vs. 16°, 95% CI: 12°-18°; P=0.0292 for R2). Ulnar deviation of the ED tendons was statistically significantly more frequent in SLE patients with JA than in control subjects in flexion and in extension for both readers (P<0.0001). CONCLUSION JA is associated with instability of the ED tendons in patients with SLE best depicted when MCP joints are flexed.
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Affiliation(s)
- Thomas Kirchgesner
- Department of Medical Imaging, Musculoskeletal Imaging Unit, Cliniques Universitaires Saint-Luc, Université Catholique de Louvain, Institut de Recherche Expérimentale et Clinique (IREC), 1200 Brussels, Belgium.
| | - Maria Stoenoiu
- Department of Rheumatology, Cliniques Universitaires Saint-Luc, Université Catholique de Louvain, Institut de Recherche Expérimentale et Clinique (IREC), 1200 Brussels, Belgium
| | - Nicolas Michoux
- Department of Medical Imaging, Musculoskeletal Imaging Unit, Cliniques Universitaires Saint-Luc, Université Catholique de Louvain, Institut de Recherche Expérimentale et Clinique (IREC), 1200 Brussels, Belgium
| | - Xavier Libouton
- Department of Orthopedic Surgery, Cliniques Universitaires Saint-Luc, Université Catholique de Louvain, Institut de Recherche Expérimentale et Clinique (IREC), 1200 Brussels, Belgium
| | - Frédéric Houssiau
- Department of Rheumatology, Cliniques Universitaires Saint-Luc, Université Catholique de Louvain, Institut de Recherche Expérimentale et Clinique (IREC), 1200 Brussels, Belgium
| | - Bruno Vande Berg
- Department of Medical Imaging, Musculoskeletal Imaging Unit, Cliniques Universitaires Saint-Luc, Université Catholique de Louvain, Institut de Recherche Expérimentale et Clinique (IREC), 1200 Brussels, Belgium
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Vande Berg B, Kirchgesner T, Mourad C, Acid S, Malghem J. Regional osteopenia or regional acceleratory phenomenon: What have we missed at MRI? Diagn Interv Imaging 2021; 102:577-580. [PMID: 33888442 DOI: 10.1016/j.diii.2021.04.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Revised: 03/31/2021] [Accepted: 04/01/2021] [Indexed: 10/21/2022]
Affiliation(s)
- Bruno Vande Berg
- Department of Radiology, Institut de Recherche Expérimentale et Clinique (IREC), Cliniques Universitaires Saint Luc, Université Catholique de Louvain (UCLouvain), 1200 Brussels, Belgium.
| | - Thomas Kirchgesner
- Department of Radiology, Institut de Recherche Expérimentale et Clinique (IREC), Cliniques Universitaires Saint Luc, Université Catholique de Louvain (UCLouvain), 1200 Brussels, Belgium
| | - Charbel Mourad
- Department of Radiology, Institut de Recherche Expérimentale et Clinique (IREC), Cliniques Universitaires Saint Luc, Université Catholique de Louvain (UCLouvain), 1200 Brussels, Belgium; Department of Radiology, Hopital Libanais Geitaoui-CHU, Achrafieh, 1100 Beyrouth, Lebanon
| | - Souad Acid
- Department of Radiology, Institut de Recherche Expérimentale et Clinique (IREC), Cliniques Universitaires Saint Luc, Université Catholique de Louvain (UCLouvain), 1200 Brussels, Belgium
| | - Jacques Malghem
- Department of Radiology, Institut de Recherche Expérimentale et Clinique (IREC), Cliniques Universitaires Saint Luc, Université Catholique de Louvain (UCLouvain), 1200 Brussels, Belgium
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Percy C, Schubert T, Galant C, Kirchgesner T, Mazzeo F. Larotrectinib in a NTRK-rearranged soft tissue sarcoma in the neoadjuvant setting: A case report. Clin Case Rep 2021; 9:1694-1698. [PMID: 33768917 PMCID: PMC7981750 DOI: 10.1002/ccr3.3878] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 11/20/2020] [Accepted: 11/24/2020] [Indexed: 12/15/2022] Open
Abstract
Patients with soft tissue sarcomas should be assessed for neurotrophic tropomyosin receptor kinase (NTRK) gene fusions as neoadjuvant treatment with larotrectinib may prevent amputation.
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Affiliation(s)
- Catherine Percy
- Multidisciplinary Sarcoma TeamCliniques Universitaires Saint‐LucBrusselsBelgium
| | - Thomas Schubert
- Multidisciplinary Sarcoma TeamCliniques Universitaires Saint‐LucBrusselsBelgium
| | - Christine Galant
- Multidisciplinary Sarcoma TeamCliniques Universitaires Saint‐LucBrusselsBelgium
| | - Thomas Kirchgesner
- Multidisciplinary Sarcoma TeamCliniques Universitaires Saint‐LucBrusselsBelgium
| | - Filomena Mazzeo
- Multidisciplinary Sarcoma TeamCliniques Universitaires Saint‐LucBrusselsBelgium
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Perlepe V, Michoux N, Kirchgesner T, Lecouvet F, Vande Berg B. Semi-quantitative CT scoring of nailed shaft fractures during normal healing and in non-unions: comparison with radiographic scoring. Eur J Radiol 2021; 138:109618. [PMID: 33684696 DOI: 10.1016/j.ejrad.2021.109618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 01/25/2021] [Accepted: 02/24/2021] [Indexed: 11/25/2022]
Abstract
PURPOSE To compare tomographic (TUS) with radiographic (RUS) union scores in nailed shaft fractures during normal healing and in non-unions. METHODS Two radiologists blinded to fracture age separately determined RUS and TUS in nailed femoral or tibial shaft fractures by analyzing the radiographic and CT examinations obtained in 47 patients during normal healing (early fracture group; 24 study participants, 17 men,19 tibias, mean fracture-CT delay 109 ± 57 days [42-204 days]) and in surgically proven non-united fractures (late fracture group, 23 patients, 14 men, 12 tibias, mean fracture-CT delay 565 ± 519 days[180-1983 days]). In both study groups, we determined the inter- and intra-observer agreement of RUS and TUS and compared TUS with RUS. RESULTS Intra- and inter-observer agreement of RUS and TUS was very good in the early fracture group and good in the late fracture group for both readers. TUS correlated with RUS substantially in the early fracture group and only weakly in the late fracture group. TUS was statistically significantly lower than RUS in study participants with RUS ≥ 8 or 9 for R2 only and ≥ 10 for both readers in the early fracture group and in patients with RUS ≥ 8, 9 or 10 in the late fracture group for both readers. CONCLUSION RUS and TUS of nailed shaft fractures during normal healing or in non-unions are both feasible and reproducible. They yield similar values in fractures with no or limited callus. TUS yields lower values than RUS in fractures with callus.
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Affiliation(s)
- Vasiliki Perlepe
- Cliniques Universitaires Saint-Luc, IREC (Institut de Recherche Clinique et Experimentale), Avenue Hippocrate 10, 1200, Brussels, Belgium.
| | - Nicolas Michoux
- Cliniques Universitaires Saint-Luc, IREC (Institut de Recherche Clinique et Experimentale), Avenue Hippocrate 10, 1200, Brussels, Belgium
| | - Thomas Kirchgesner
- Cliniques Universitaires Saint-Luc, IREC (Institut de Recherche Clinique et Experimentale), Avenue Hippocrate 10, 1200, Brussels, Belgium
| | - Frederic Lecouvet
- Cliniques Universitaires Saint-Luc, IREC (Institut de Recherche Clinique et Experimentale), Avenue Hippocrate 10, 1200, Brussels, Belgium
| | - Bruno Vande Berg
- Cliniques Universitaires Saint-Luc, IREC (Institut de Recherche Clinique et Experimentale), Avenue Hippocrate 10, 1200, Brussels, Belgium
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Kirchgesner T, Stoenoiu M, Michoux N, Durez P, Vande Berg B. Contrast-enhanced T1-weighted Dixon water- and fat-only images to assess osteitis and erosions according to RAMRIS in hands of patients with early rheumatoid arthritis. Diagn Interv Imaging 2021; 102:439-445. [PMID: 33583754 DOI: 10.1016/j.diii.2021.01.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 01/19/2021] [Accepted: 01/23/2021] [Indexed: 10/22/2022]
Abstract
PURPOSE To assess the agreement between readers using contrast-enhanced T1-weighted Dixon water- and fat-only images and OMERACT-recommended sequences for the scoring of osteitis and erosions according to the rheumatoid arthritis (RA) MRI scoring system (RAMRIS) in hands of patients with early RA. MATERIALS AND METHODS Both hands of 24 patients (16 women, 8 men; mean age, 45.7±14.5 [SD] years; age range: 25-70 years) with early RA were prospectively imaged with fat-saturated T2-weighted sequences, non-Dixon T1-weighted imaging prior to contrast material injection and T1-weighted Dixon imaging after contrast material injection at 1.5T. There were Two radiologists separately quantified osteitis and erosions according to RAMRIS using contrast-enhanced T1-weighted Dixon water-only and fat-saturated T2-weighted images for osteitis and contrast-enhanced T1-weighted Dixon fat-only and T1-weighted images prior to contrast material injection for erosions. Intraclass correlation coefficients (ICC) were calculated to assess inter-technique, intra-observer and inter-observer agreement. RESULTS Mean ICC for the agreement between Dixon and non-Dixon images ranged from 0.68 (95%CI: 0.20-0.90) to 0.99 (95%CI: 0.95-1.00) for the scoring of osteitis and from 0.77 (95%CI: 0.38-0.93) to 0.99 (95%CI: 0.95-1.00) for the scoring of erosions. Mean ICC for the agreement between first and second readings ranged from 0.94 (95%CI: 0.81-0.98) to 0.97 (95%CI: 0.91-0.99) for the scoring of osteitis using Dixon and 0.91 (95%CI: 0.72-0.97) to 0.98 (95%CI: 0.92-0.99) using non-Dixon images and from 0.80 (95%CI: 0.45-0.94) to 0.97 (95%CI: 0.91-0.99) for the scoring of erosions using Dixon and 0.72 (95%CI: 0.29-0.91) to 0.98 (95%CI: 0.92-0.99) using non-Dixon images. CONCLUSION Contrast-enhanced T1-weighted Dixon water- and fat-only images can serve as an alternative to fat-saturated T2-weighted and T1-weighted MRI sequences for the assessment of osteitis and erosions according to the RAMRIS scoring system in hands of patients with early RA.
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Affiliation(s)
- Thomas Kirchgesner
- Department of Medical Imaging - Musculoskeletal Imaging Unit - Cliniques Universitaires Saint-Luc - Université Catholique de Louvain - Institut de Recherche Expérimentale et Clinique (IREC), Avenue Hippocrate 10, 1200 Brussels, Belgium.
| | - Maria Stoenoiu
- Department of Rheumatology - Cliniques Universitaires Saint-Luc - Université Catholique de Louvain - Institut de Recherche Expérimentale et Clinique (IREC), Avenue Hippocrate 10, 1200 Brussels, Belgium
| | - Nicolas Michoux
- Department of Medical Imaging - Musculoskeletal Imaging Unit - Cliniques Universitaires Saint-Luc - Université Catholique de Louvain - Institut de Recherche Expérimentale et Clinique (IREC), Avenue Hippocrate 10, 1200 Brussels, Belgium
| | - Patrick Durez
- Department of Rheumatology - Cliniques Universitaires Saint-Luc - Université Catholique de Louvain - Institut de Recherche Expérimentale et Clinique (IREC), Avenue Hippocrate 10, 1200 Brussels, Belgium
| | - Bruno Vande Berg
- Department of Medical Imaging - Musculoskeletal Imaging Unit - Cliniques Universitaires Saint-Luc - Université Catholique de Louvain - Institut de Recherche Expérimentale et Clinique (IREC), Avenue Hippocrate 10, 1200 Brussels, Belgium
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Mourad C, Galant C, Wacheul E, Kirchgesner T, Michoux N, Vande Berg B. Topology of microfractures in osteonecrotic femoral heads at μCT and histology. Bone 2020; 141:115623. [PMID: 32877712 DOI: 10.1016/j.bone.2020.115623] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 08/14/2020] [Accepted: 08/28/2020] [Indexed: 11/27/2022]
Abstract
AIM To assess the topology of bone and cartilage microfractures in osteonecrotic femoral heads. METHOD Sixteen resected human femoral heads with collapsed osteonecrosis (ON, n = 11) or osteoarthritis (OA, n = 5) were imaged at μCT with 12 μ nominal resolution. Forty-seven histological sections and μCT reformats with (n = 30) or without (8 from ON and 9 from OA femoral heads) osteonecrotic lesions were obtained and divided in 2 × 2 mm segments by a superposed grid. A radiologist and a pathologist separately assessed the presence of bone and cartilage microfractures in each segment on μCT and histological images, respectively. We determined the frequency and distribution of segments with bone microfractures according to a zonal distribution. Matrix analysis was performed by using Matlab to calculate the connectivity index and long/short axis ratios of clustered segments with microfractures. RESULTS Segments with bone microfractures but not with cartilage microfractures were found more frequently in ON than in OA femoral heads. In the 38 matched μCT and histological images from ON femoral heads, 86%/82% of segments with cortical microfracture, 91%/96% of segments with trabecular microfractures involved ON lesions at μCT/histology. At histology, 83% of segments with cartilage microfractures involved ON lesions. In the 30 paired μCT and histological images containing necrotic lesions, the frequency of segments with trabecular microfractures in the superficial layers (55% at μCT/51% at histology) was statistically significantly higher than in the deep layer (25% P < 0.0001/35%; P = 0.0006). Clustered segments with cortical/trabecular microfractures, exclusively found in osteonecrotic lesions, had a connectivity index >2.0/20.0 and mean long/short axis ratio > 2.35/2.2, respectively. CONCLUSION Segments with bone microfractures predominate in necrotic lesions. Segments with trabecular microfractures form elongated clusters near the femoral head surface.
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Affiliation(s)
- Charbel Mourad
- Department of Radiology, Hôpital Libanais Geitaoui-CHU, Achrafieh, 1100 Beyrouth, Lebanon; Institut de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain, 55 Avenue Hippocrate, 1200 Woluwé-Saint-Lambert, Brussels, Belgium.
| | - Christine Galant
- Institut de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain, 55 Avenue Hippocrate, 1200 Woluwé-Saint-Lambert, Brussels, Belgium; Department of Anatomopathology, Cliniques Universitaires Saint Luc, 10 Avenue Hippocrate, 1200 Woluwé-Saint-Lambert, Brussels, Belgium.
| | - Emilie Wacheul
- Department of Anatomopathology, Cliniques Universitaires Saint Luc, 10 Avenue Hippocrate, 1200 Woluwé-Saint-Lambert, Brussels, Belgium.
| | - Thomas Kirchgesner
- Institut de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain, 55 Avenue Hippocrate, 1200 Woluwé-Saint-Lambert, Brussels, Belgium; Department of Radiology, Cliniques Universitaires Saint Luc, 10 Avenue Hippocrate, 1200 Woluwé-Saint-Lambert, Brussels, Belgium.
| | - Nicolas Michoux
- Institut de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain, 55 Avenue Hippocrate, 1200 Woluwé-Saint-Lambert, Brussels, Belgium; Department of Radiology, Cliniques Universitaires Saint Luc, 10 Avenue Hippocrate, 1200 Woluwé-Saint-Lambert, Brussels, Belgium.
| | - Bruno Vande Berg
- Institut de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain, 55 Avenue Hippocrate, 1200 Woluwé-Saint-Lambert, Brussels, Belgium; Department of Radiology, Cliniques Universitaires Saint Luc, 10 Avenue Hippocrate, 1200 Woluwé-Saint-Lambert, Brussels, Belgium.
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Kirchgesner T, Stoenoiu M, Michoux N, Durez P, Vande Berg B. Comparison between 3-point Dixon- and CHESS-based OMERACT-recommended MRI protocols in hands of patients with suspicion of early rheumatoid arthritis. Eur J Radiol 2020; 134:109412. [PMID: 33221617 DOI: 10.1016/j.ejrad.2020.109412] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 08/31/2020] [Accepted: 11/09/2020] [Indexed: 10/23/2022]
Abstract
PURPOSE To compare fat suppression effectiveness, image quality and disease activity scores between MRI protocols based on the Dixon method and the Chemical Shift Selective (CHESS) technique in hands of patients with suspicion of early rheumatoid arthritis (RA). METHOD Both hands of 28 patients (19 women; mean age 45.2 years old) with suspicion of early RA were prospectively imaged with Dixon- and CHESS-based OMERACT recommended protocols at 1.5 T including fat-suppressed T2-weighted and contrast-enhanced T1-weighted imaging. Two radiologists (R1/R2) separately assessed effectiveness of fat suppression and determined RAMRIS scores woth the Dixon- and CHESS-based protocols. R1 repeated the RAMRIS scoring and measured contrast-to-noise ratios (CNRs) on Dixon and CHESS images. Statistics included 2-way ANOVA test for the comparison of CNRs and Bland-Altman methodology for inter-technique and intra-observer agreement (p < 0.05). RESULTS Fat suppression failure occurred in up to 1 patient with the Dixon- and 25 patients with the CHESS-based protocols. CNRs were significantly higher on T1-weighted and lower on T2-weighted Dixon images than on the corresponding CHESS images (p ≤ 0.042). Median bias of the difference between Dixon- and CHESS-based RAMRIS scores was not significantly different from 0 (-0.8 to +1.0 and -1.1 to +1.4 for R1/R2). Median bias of the difference between RAMRIS scores at first and second readings was significantly different from 0 with the CHESS-based protocols (-0.8 to +1.7) but not with the Dixon-based protocols (+0.0 to +1.0). CONCLUSIONS Dixon sequences yield more effective fat suppression and more reproducible RAMRIS scoring than CHESS sequences in hands with suspicion of early RA.
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Affiliation(s)
- Thomas Kirchgesner
- Department of Medical Imaging, Musculoskeletal Imaging Unit, Cliniques universitaires Saint-Luc, Université Catholique de Louvain, Institut de Recherche Expérimentale et Clinique (IREC), Avenue Hippocrate 10 1200, Brussels, Belgium.
| | - Maria Stoenoiu
- Department of Rheumatology, Cliniques universitaires Saint-Luc, Université Catholique de Louvain, Institut de Recherche Expérimentale et Clinique (IREC), Avenue Hippocrate 10 1200, Brussels, Belgium
| | - Nicolas Michoux
- Department of Medical Imaging, Musculoskeletal Imaging Unit, Cliniques universitaires Saint-Luc, Université Catholique de Louvain, Institut de Recherche Expérimentale et Clinique (IREC), Avenue Hippocrate 10 1200, Brussels, Belgium
| | - Patrick Durez
- Department of Rheumatology, Cliniques universitaires Saint-Luc, Université Catholique de Louvain, Institut de Recherche Expérimentale et Clinique (IREC), Avenue Hippocrate 10 1200, Brussels, Belgium
| | - Bruno Vande Berg
- Department of Medical Imaging, Musculoskeletal Imaging Unit, Cliniques universitaires Saint-Luc, Université Catholique de Louvain, Institut de Recherche Expérimentale et Clinique (IREC), Avenue Hippocrate 10 1200, Brussels, Belgium
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Plier M, Nzeusseu Toukap A, Michoux N, Stoenoiu MS, Kirchgesner T, Durez P, Lauwerys B, Lecouvet FE. Diagnostic performance of sacroiliac joint MRI and added value of spine MRI to detect active spondyloarthritis. Diagn Interv Imaging 2020; 102:171-180. [PMID: 32830083 DOI: 10.1016/j.diii.2020.07.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 07/01/2020] [Accepted: 07/05/2020] [Indexed: 11/30/2022]
Abstract
PURPOSE To investigate the diagnostic performance of sacroiliac joint (SIJ) magnetic resonance imaging (MRI) and the incremental value of spine MRI to "predict" clinical disease activity in patients with axial spondyloarthritis (axSpA). MATERIALS AND METHODS This cross-sectional study included adult patients with known axSpA according to the SpondyloArthritis International Society (ASAS) classification criteria, radiological arm. MRI disease activity was scored semi-quantitatively for SIJ and total spine MRI in each patient. Two cut-off levels (≥ 1.3 and ≥ 2.1) for ankylosing spondylitis disease activity score with C-reactive protein (ASDAS-CRP) were considered for clinical disease activity categorization. MRI scores were first evaluated individually. Then, SIJ score was combined with the score from a spine segment (lumbar, cervical, thoracic or total spine) to build a bi-parametric model using a classification tree. Receiver operating characteristic (ROC) curves were constructed to evaluate the classification performance according to disease activity category of these models. RESULTS Forty-four patients (30 men, 14 women; mean age, 37 years±10 [SD] [range: 17-64 years]) with a mean disease duration of 5 years±8 (SD) (range: 0-35 years) were included. Thirty-six patients (36/44; 82%) had ASDAS-CRP≥1.3 and 27 patients (27/44; 61%) had ASDAS-CRP≥2.1. The most frequently involved spinal segment was mid-thoracic (T7-T8). The SIJ MRI score was an informative model to identify active axSpA (AUC≥0.7, regardless of the cut-off level on ASDAS-CRP). Performance of bi-parametric models based on "SIJ+thoracic spine" (for detecting patients with ASDAS-CRP≥1.3) or "SIJ+total spine" (for detecting patients with ASDAS-CRP≥2.1) outperformed that of the individual SIJ score (P<0.05). CONCLUSION The combination of MRI of the SIJ and spine allows to accurately discriminate between active and inactive axSpA, outperforming SIJ MRI alone.
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Affiliation(s)
- M Plier
- Department of Rheumatology, Cliniques Universitaires Saint-Luc, Institut de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain (UCLouvain), 1200 Brussels, Belgium; Department of Rheumatology, Centre Hospitalier de Luxembourg, 1210 Luxembourg, Luxembourg
| | - A Nzeusseu Toukap
- Department of Rheumatology, Cliniques Universitaires Saint-Luc, Institut de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain (UCLouvain), 1200 Brussels, Belgium
| | - N Michoux
- Department of Radiology, Cliniques Universitaires Saint-Luc, Institut de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain (UCLouvain), 1200 Brussels, Belgium
| | - M S Stoenoiu
- Department of Rheumatology, Cliniques Universitaires Saint-Luc, Institut de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain (UCLouvain), 1200 Brussels, Belgium
| | - T Kirchgesner
- Department of Radiology, Cliniques Universitaires Saint-Luc, Institut de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain (UCLouvain), 1200 Brussels, Belgium
| | - P Durez
- Department of Rheumatology, Cliniques Universitaires Saint-Luc, Institut de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain (UCLouvain), 1200 Brussels, Belgium
| | - B Lauwerys
- Department of Rheumatology, Cliniques Universitaires Saint-Luc, Institut de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain (UCLouvain), 1200 Brussels, Belgium
| | - F E Lecouvet
- Department of Radiology, Cliniques Universitaires Saint-Luc, Institut de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain (UCLouvain), 1200 Brussels, Belgium.
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Kirchgesner T, Stoenoiu M, Michoux N, Libouton X, Houssiau F, Vande Berg B. FRI0175 SEMI-DYNAMIC MRI OF THE EXTENSOR DIGITORUM TENDONS IN JACCOUD ARTHROPATHY. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Jaccoud arthropathy (JA) is a rare joint deformity mostly associated with systemic lupus erythematosus (SLE) (1). JA may be defined as a reversible deformity of the hands during flexion with ulnar deviation and swan neck deformities of the fingers. The physiopathology and the mechanisms leading to JA still remain to be elucidated.Objectives:To test the hypothesis that Jaccoud arthropathy (JA) in systemic lupus erythematosus (SLE) patients is associated with abnormal extensor digitorum (ED) tendons displacement during flexion of the metacarpophalangeal (MCP) joints.Methods:16 SLE patients with JA (JA+), 12 SLE patients without JA (JA-) and 24 control subjects were included in the study. Transverse spin echo T1-weighted MR sequences of the MCP joints in flexion and in extension were obtained in each hand of SLE patients and in one randomly-selected hand of control subjects. Two radiologists separately measured the amplitude and the direction of the displacement of the ED tendons with respect to the midline at the level of the MCP joints. Statistical analysis included two-way ANOVA with random effects to assess differences in amplitude (p<0.0083), Fisher-Freeman-Halton exact test to assess differences in direction (p<0.0063) and Gwet’s AC1 score to determine interobserver agreement.Results:Amplitude of the displacement of the ED tendons was statistically significantly higher in JA+ patients than in JA- patients and controls in flexion for both readers (p<0.0001) and in extension for one reader (p<0.0048). Ulnar deviation of the ED tendons was statistically significantly more frequent in JA+ patients than in JA- patients and controls in flexion and in extension for both readers (p<0.0001). Interobserver agreement for the assessment of displacement was moderate to very good (0.51≤kappa≤0.93).Conclusion:JA is associated with abnormal displacement of the ED tendons in flexion and extension. Abnormal displacement of the ED tendons is absent in patients without JA.References:[1]Santiago MB. Miscellaneous non-inflammatory musculoskeletal conditions. Jaccoud’s arthropathy. Best Pract Res Clin Rheumatol. 2011;25(5):715-25.Figure 1.Axial spin echo T1-weighted images of a 49-year-old woman with SLE and JA (a) in flexion and (b) extension. In flexion, the extensor digitorum (ED) tendons of the 3rdand 4thfingers are completely displaced on the ulnar aspect of the metacarpal heads (white arrows) with no tendon visible on the dorsal aspect (arrowheads). In extension, the ED tendons of the 3rdand 4thfingers are slightly displaced on the ulnar side of the dorsal aspect of the metacarpal heads (black arrows).Figure 2.Axial spin echo T1-weighted images of the sex- and age-matched control subject of the patient from Figure 1 (a) in flexion and (b) extension. The extensor digitorum tendons of the 3rdand 4thfingers are normally positioned on the dorsal aspect of the metacarpal heads in flexion (white arrows) and extension (black arrows).Disclosure of Interests:Thomas Kirchgesner: None declared, Maria Stoenoiu: None declared, Nicolas Michoux: None declared, Xavier Libouton: None declared, Frederic Houssiau Grant/research support from: UCB, Consultant of: GSK, Bruno Vande Berg: None declared
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Kirchgesner T, Stoenoiu M, Michoux N, Durez P, Vande Berg B. THU0533 A SINGLE MRI DIXON SEQUENCE TO ASSESS DISEASE ACTIVITY AND CARTILAGE IN EARLY RHEUMATOID HANDS: ONE SEQUENCE TO ASSESS THEM ALL? Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.1685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:OMERACT recommends three “core set” MRI sequences with an optional cartilage-dedicated sequence to perform Rheumatoid Arthritis (RA) MRI scoring (RAMRIS) (1). Dixon method allows the production of four different images from a single MRI sequence.Objectives:To test a short MRI protocol based on a single Dixon sequence to assess disease activity and cartilage in hands of patients with early RA.Methods:Twenty-four patients (16 women, mean age 45.7 years old) with early DMARD-naive RA meeting the ACR/EULAR 2010 criteria were prospectively included. Both hands of each patient were imaged with MRI including contrast-enhanced T1-weighted Dixon and OMERACT “core set” MRI sequences and with conventional radiography.Two musculoskeletal radiologists (R1 and R2) separately assessed disease activity according to RAMRIS scoring system based on the Dixon images (contrast-enhanced T1-weighted Dixon water-only images to score synovitis, tenosynovitis and osteitis and contrast-enhanced T1-weighted Dixon fat-only images to score erosions) and the three OMERACT “core set” MRI sequences (contrast-enhanced fat-saturated T1-weighted images to score synovitis and tenosynovitis, fat-saturated T2-weighted images to score osteitis and T1-weighted images without contrast-material injection to score erosions).One radiologist (R1) separately measured the thickness of the cartilage in the joints corresponding to those assessed by the Sharp/van der Heijde modified scoring method on contrast-enhanced T1-weighted Dixon out-of-phase images and radiographs (2).RAMRIS scoring and measurement of the cartilage thickness were repeated by R1 to assess intra-observer agreement. Statistical analysis was based on intra-class correlation coefficients (ICC) with 95% confidence interval to assess inter-technique, intra-observer and inter-observer agreement. The strength of agreement was interpreted as follows: ≤0, poor; 0.01-0.20, slight; 0.21-0.40, fair; 0.41-0.60, moderate; 0.61-0.80, substantial and ≥0.81, excellent.Results:Agreement between total RAMRIS scores obtained with the Dixon water- and fat-only images and total RAMRIS scores obtained with the OMERACT sequences was excellent for R1 (0.94; 0.86-0.97) and R2 (0.91; 0.81-0.96). Intra-observer agreement was excellent with Dixon images (0.97; 0.92-0.98) and OMERACT sequences (0.96; 0.90-0.98). Inter-observer agreement was excellent with Dixon images (0.92; 0.82-0.96) and OMERACT sequences (0.93; 0.85-0.97).Agreement between the measures of cartilage thickness on the Dixon out-of-phase images and the measures of cartilage thickness on radiographs was substantial (0.71; 0.66-0.75). Intra-observer agreement was excellent with Dixon out-of-phase images (0.94; 0.93-0.95) and radiographs (0.93; 0.92-0.94).Conclusion:An MRI protocol based on a single contrast-enhanced T1-weighted Dixon sequence allows reproducible RAMRIS scoring and measurement of the cartilage thickness. Further studies should be performed to evaluate the value of a short MRI protocol based on the Dixon method to monitor disease activity including cartilage loss in treated RA patients.References:[1]Ostergaard M, Peterfy CG, Bird P, Gandjbakhch F, Glinatsi D, Eshed I, et al. The OMERACT Rheumatoid Arthritis Magnetic Resonance Imaging (MRI) Scoring System: Updated Recommendations by the OMERACT MRI in Arthritis Working Group. J Rheumatol. 2017;44(11):1706-12.[2]van der Heijde D. How to read radiographs according to the Sharp/van der Heijde method. J Rheumatol. 1999;26(3):743-5.Disclosure of Interests:Thomas Kirchgesner: None declared, Maria Stoenoiu: None declared, Nicolas Michoux: None declared, Patrick Durez Speakers bureau: AbbVie, Bristol-Myers Squibb, Celltrion, Eli Lilly, Pfizer, Sanofi, Bruno Vande Berg: None declared
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Legrand J, Kirchgesner T, Sokolova T, Vande Berg B, Durez P. Early clinical response and long-term radiographic progression in recent-onset rheumatoid arthritis: Clinical remission within six months remains the treatment target. Joint Bone Spine 2019; 86:594-599. [PMID: 30928534 DOI: 10.1016/j.jbspin.2019.03.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/13/2019] [Indexed: 01/05/2023]
Abstract
OBJECTIVES The primary objective was to evaluate the correlation between 5-year radiographic structural disease progression and early clinical remission in recent-onset rheumatoid arthritis (RA). The secondary objective was to assess the correlation between erosion development in joints free of damage at baseline and early clinical remission. METHODS A single-center retrospective study was performed in 133 patients meeting ACR criteria for RA of recent onset. Two radiologists independently quantified radiographic structural lesions at the hands and forefeet using the Sharp van der Heijde (SVdH) Score at the diagnosis then 5 years later. The patients were divided into two groups based on whether the lesions were stable (SVdH Score increase ≤ 10 points, Xray-STAB group) or had worsened (SVdH Score increase > 10 points, Xray-PROG group). The clinical response was assessed after 3, 6, and 12 months. Clinical remission was defined based on the DAS28-CRP, SDAI, CDAI, and ACR/EULAR Boolean remission criteria. RESULTS Of the 133 patients, 90 were in the Xray-STAB group (mean SVdH score increase, 2.4 ± 2.9) and 43 in the Xray-PROG group (22.9 ± 13.4). The 6-month disease activity indices were higher in the Xray-PROG group (P < 0.05). Achieving a 6-month clinical remission had 58.6%, 39.1%, 40.0%, and 32.2% sensitivity for predicting 5-year radiographic stability when the DAS28-CRP, SDAI, CDAI, and Boolean definition were used, respectively; corresponding values for specificity were 73.8%, 85.7%, 83.7%, and 90.5%. CONCLUSION Achieving a clinical remission within 6 months is key to preventing radiographic structural progression in patients with recent-onset RA.
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Affiliation(s)
- Julie Legrand
- Service de radiologie, Cliniques universitaires Saint-Luc, 1200 Bruxelles, Belgium; Université Catholique de Louvain, Institut de Recherche Expérimentale et Clinique (IREC), 1200 Bruxelles, Belgium
| | - Thomas Kirchgesner
- Service de radiologie, Cliniques universitaires Saint-Luc, 1200 Bruxelles, Belgium; Université Catholique de Louvain, Institut de Recherche Expérimentale et Clinique (IREC), 1200 Bruxelles, Belgium
| | - Tatiana Sokolova
- Université Catholique de Louvain, Institut de Recherche Expérimentale et Clinique (IREC), 1200 Bruxelles, Belgium; Service de rhumatologie, Cliniques universitaires Saint-Luc, 1200 Bruxelles, Belgium
| | - Bruno Vande Berg
- Service de radiologie, Cliniques universitaires Saint-Luc, 1200 Bruxelles, Belgium; Université Catholique de Louvain, Institut de Recherche Expérimentale et Clinique (IREC), 1200 Bruxelles, Belgium
| | - Patrick Durez
- Université Catholique de Louvain, Institut de Recherche Expérimentale et Clinique (IREC), 1200 Bruxelles, Belgium; Service de rhumatologie, Cliniques universitaires Saint-Luc, 1200 Bruxelles, Belgium.
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Heynen B, Tamigneaux C, Pasoglou V, Malghem J, Vande Berg B, Kirchgesner T. MRI detection of radiographically occult fractures of the hip and pelvis in the elderly: Comparison of T2-weighted Dixon sequence with T1-weighted and STIR sequences. Diagn Interv Imaging 2019; 100:169-175. [DOI: 10.1016/j.diii.2018.11.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2018] [Revised: 11/22/2018] [Accepted: 11/23/2018] [Indexed: 11/25/2022]
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Barakat E, Kirchgesner T, Triqueneaux P, Galant C, Stoenoiu M, Lecouvet FE. Whole-Body Magnetic Resonance Imaging in Rheumatic and Systemic Diseases. Magn Reson Imaging Clin N Am 2018; 26:581-597. [DOI: 10.1016/j.mric.2018.06.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Kirchgesner T, Demondion X, Stoenoiu M, Durez P, Nzeusseu Toukap A, Houssiau F, Galant C, Acid S, Lecouvet F, Malghem J, Vande Berg B. Fasciae of the musculoskeletal system: normal anatomy and MR patterns of involvement in autoimmune diseases. Insights Imaging 2018; 9:761-771. [PMID: 30159858 PMCID: PMC6206374 DOI: 10.1007/s13244-018-0650-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Revised: 06/08/2018] [Accepted: 07/16/2018] [Indexed: 12/19/2022] Open
Abstract
Abstract The fascial system is a three-dimensional continuum of connective tissues present everywhere throughout the body, from the head to the toes and from the skin to the bone. The current article aims to review the normal anatomy of the fasciae of the musculoskeletal system with macroscopic and microscopic correlations and to describe their appearance at MRI in normal subjects and in patients with autoimmune diseases of the musculoskeletal system. Key Points • The fascial system is a three-dimensional continuum of connective tissues. • It is present everywhere throughout the body, from the head to the toes and from the skin to the bone. • The normal fascial system is barely visible at MRI. • MR patterns of fascial involvement in autoimmune diseases reflect the complex anatomy of the fasciae of the musculoskeletal system.
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Affiliation(s)
- Thomas Kirchgesner
- Department of Radiology - Musculoskeletal Imaging Unit, Cliniques universitaires Saint-Luc / Institut de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain, Brussels, Belgium.
| | - Xavier Demondion
- Department of Radiology and Musculoskeletal Imaging, CHRU Lille / Laboratory of Anatomy, Faculty of Medicine of Lille, Lille, France
| | - Maria Stoenoiu
- Department of Rheumatology, Cliniques universitaires Saint-Luc, Brussels, Belgium
| | - Patrick Durez
- Department of Rheumatology, Cliniques universitaires Saint-Luc, Brussels, Belgium
| | | | - Frédéric Houssiau
- Department of Rheumatology, Cliniques universitaires Saint-Luc, Brussels, Belgium
| | - Christine Galant
- Department of Pathology, Cliniques universitaires Saint-Luc, Brussels, Belgium
| | - Souad Acid
- Department of Radiology - Musculoskeletal Imaging Unit, Cliniques universitaires Saint-Luc / Institut de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain, Brussels, Belgium
| | - Frédéric Lecouvet
- Department of Radiology - Musculoskeletal Imaging Unit, Cliniques universitaires Saint-Luc / Institut de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain, Brussels, Belgium
| | - Jacques Malghem
- Department of Radiology - Musculoskeletal Imaging Unit, Cliniques universitaires Saint-Luc / Institut de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain, Brussels, Belgium
| | - Bruno Vande Berg
- Department of Radiology - Musculoskeletal Imaging Unit, Cliniques universitaires Saint-Luc / Institut de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain, Brussels, Belgium
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Gayol S, Kirchgesner T, Kopferschmitt J, Meyer N, Sauleau E, Wiesel ML, Cazenave JP, Gachet C, Lanza F. Evaluation of soluble glycoprotein V as a marker of venous thromboembolism. Thromb Haemost 2017; 107:184-7. [DOI: 10.1160/th11-09-0630] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2011] [Accepted: 10/23/2011] [Indexed: 11/05/2022]
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Kirchgesner T, Perlepe V, Michoux N, Larbi A, Vande Berg B. Fat suppression at three-dimensional T1-weighted MR imaging of the hands: Dixon method versus CHESS technique. Diagn Interv Imaging 2017; 99:23-28. [PMID: 29054404 DOI: 10.1016/j.diii.2017.09.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Revised: 08/07/2017] [Accepted: 09/13/2017] [Indexed: 10/18/2022]
Abstract
PURPOSE To compare the effectiveness of fat suppression and the image quality of the Dixon method with those of the chemical shift-selective (CHESS) technique in hands of normal subjects at non-enhanced three-dimensional (3D) T1-weighted MR imaging. MATERIALS AND METHODS Both hands of 14 healthy volunteers were imaged with 3D fast spoiled gradient echo (FSPGR) T1-weighted Dixon, 3D FSPGR T1-weighted CHESS and 3D T1-weighted fast spin echo (FSE) CHESS sequences in a 1.5T MR scanner. Three radiologists scored the effectiveness of fat suppression in bone marrow (EFSBM) and soft tissues (EFSST) in 20 joints per subject. One radiologist measured the signal-to-noise ratio (SNR) in 10 bones per subject. Statistical analysis used two-way ANOVA with random effects (P<0.0083), paired t-test (P<0.05) and observed agreement to assess differences in effectiveness of fat suppression, differences in SNR and interobserver agreement. RESULTS EFSBM was statistically significantly higher for the 3D FSPGR T1-weighted Dixon than for the 3D FSPGR T1-weighted CHESS sequence and the 3D FSE T1-weighted CHESS sequence (P<0.0001). EFSST was statistically significantly higher for the 3D FSPGR T1-weighted Dixon than for the 3D FSPGR T1-weighted CHESS sequence (P<0.0011) and for the 3D FSE T1-weighted CHESS sequence in the axial plane (P=0.0028). Mean SNR was statistically significantly higher for 3D FSPGR T1-weighted Dixon sequence than for 3D FSPGR T1-weighted CHESS and 3D FSE T1-weighted CHESS sequences (P<0.0001). CONCLUSION The Dixon method yields more effective fat suppression and higher SNR than the CHESS technique at 3D T1-weighted MR imaging of the hands.
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Affiliation(s)
- T Kirchgesner
- Musculoskeletal Imaging Unit, cliniques universitaires Saint-Luc, université catholique de Louvain, institut de recherche expérimentale et clinique (IREC), 10, avenue Hippocrate, 1200 Brussels, Belgium.
| | - V Perlepe
- Musculoskeletal Imaging Unit, cliniques universitaires Saint-Luc, université catholique de Louvain, institut de recherche expérimentale et clinique (IREC), 10, avenue Hippocrate, 1200 Brussels, Belgium.
| | - N Michoux
- Musculoskeletal Imaging Unit, cliniques universitaires Saint-Luc, université catholique de Louvain, institut de recherche expérimentale et clinique (IREC), 10, avenue Hippocrate, 1200 Brussels, Belgium.
| | - A Larbi
- Musculoskeletal Imaging Unit, cliniques universitaires Saint-Luc, université catholique de Louvain, institut de recherche expérimentale et clinique (IREC), 10, avenue Hippocrate, 1200 Brussels, Belgium.
| | - B Vande Berg
- Musculoskeletal Imaging Unit, cliniques universitaires Saint-Luc, université catholique de Louvain, institut de recherche expérimentale et clinique (IREC), 10, avenue Hippocrate, 1200 Brussels, Belgium.
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Colin GC, Kirchgesner T, Vancraeynest D, Ghaye B. Giant left atrium: back to basic chest X-ray interpretation. Acta Cardiol 2017. [DOI: 10.1080/ac.71.6.3178194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Geoffrey C. Colin
- Division of Radiology, Cliniques Universitaires Saint-Luc, Brussels, Belgium
| | - Thomas Kirchgesner
- Division of Radiology, Cliniques Universitaires Saint-Luc, Brussels, Belgium
| | - David Vancraeynest
- Division of Cardiology, Cliniques Universitaires Saint-Luc, Brussels, Belgium
| | - Benoit Ghaye
- Division of Radiology, Cliniques Universitaires Saint-Luc, Brussels, Belgium
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Colin GC, Kirchgesner T, Vancraeynest D, Ghaye B. Giant left atrium: back to basic chest X-ray interpretation. Acta Cardiol 2016; 71:737-738. [PMID: 27920463 DOI: 10.2143/ac.71.6.3178194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Kirchgesner T, Ghaye B, Marchandise S, Le Polain de Waroux JB, Coche E. Iatrogenic cardiac perforation due to pacing lead displacement: Imaging findings. Diagn Interv Imaging 2016; 97:233-8. [DOI: 10.1016/j.diii.2015.03.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2014] [Revised: 03/11/2015] [Accepted: 03/11/2015] [Indexed: 10/23/2022]
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Kirchgesner T, Pesquer L, Larbi A, Meyer P, Moreau-Durieux MH, Silvestre A, Dallaudière B. Axial traction in magnetic resonance arthrography of the wrist: How to do? Diagn Interv Imaging 2015; 96:519-22. [DOI: 10.1016/j.diii.2014.06.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Kirchgesner T, Dallaudière B, Omoumi P, Malghem J, Vande Berg B, Lecouvet F, Houssiau F, Galant C, Larbi A. Eosinophilic fasciitis: Typical abnormalities, variants and differential diagnosis of fasciae abnormalities using MR imaging. Diagn Interv Imaging 2015; 96:341-8. [DOI: 10.1016/j.diii.2014.06.018] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2014] [Revised: 06/11/2014] [Accepted: 06/23/2014] [Indexed: 01/14/2023]
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Kirchgesner T, Danse E, Tombal B. [Intravesical active prostate bleeding diagnosed in B-mode ultrasound]. Prog Urol 2013; 23:906-8. [PMID: 24034804 DOI: 10.1016/j.purol.2013.03.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2013] [Revised: 03/24/2013] [Accepted: 03/27/2013] [Indexed: 12/01/2022]
Abstract
Hematuria is one of the most frequent minor complications after prostatic biopsy. We would like to report the case of a 68-year-old patient with massive hematuria after prostatic biopsy and intravesical active prostate bleeding diagnosed in B-mode ultrasonography.
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Affiliation(s)
- T Kirchgesner
- Department of Radiology, cliniques universitaires Saint-Luc, avenue Hippocrate 10, 1200 Brussels, Belgique.
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