1
|
Park EH, O'Donnell T, Fritz J. Dual-Energy Computed Tomography Applications in Rheumatology. Radiol Clin North Am 2024; 62:849-863. [PMID: 39059976 DOI: 10.1016/j.rcl.2024.02.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/28/2024]
Abstract
Dual-energy computed tomography (DECT) has emerged as a transformative tool in the past decade. Initially employed in gout within the field of rheumatology to distinguish and quantify monosodium urate crystals through its dual-material discrimination capability, DECT has since broadened its clinical applications. It now encompasses various rheumatic diseases, employing advanced techniques such as bone marrow edema assessment, iodine mapping, and collagen-specific imaging. This review article aims to examine the unique characteristics of DECT, discuss its strengths and limitations, illustrate its applications for accurately evaluating various rheumatic diseases in clinical practice, and propose future directions for DECT in rheumatology.
Collapse
Affiliation(s)
- Eun Hae Park
- Division of Musculoskeletal Radiology, Department of Radiology, NYU Grossman School of Medicine, New York, USA; Department of Radiology, Research Institute of Clinical Medicine of Jeonbuk National University-Biomedical Research Institute of Jeonbuk National University Hospital, Geonjiro 20, Deokjin-gu, Jeonju, Jeollabukdo 54907, Republic of Korea
| | - Thomas O'Donnell
- CT Research Collaborations Siemens Healthineers, Malvern PA, USA
| | - Jan Fritz
- Division of Musculoskeletal Radiology, Department of Radiology, NYU Grossman School of Medicine, New York, USA.
| |
Collapse
|
2
|
Wu J, Yan J, Chang J, Li C, Xia B, Liu S, Zhu X, Zhou Q. Diagnostic values of different musculoskeletal ultrasound signs, serum uric acid, and their combined detection for gouty arthritis. Arch Rheumatol 2024; 39:265-273. [PMID: 38933715 PMCID: PMC11196220 DOI: 10.46497/archrheumatol.2024.10366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Accepted: 11/13/2023] [Indexed: 06/28/2024] Open
Abstract
Objectives The study aimed to investigate the diagnostic values of different musculoskeletal ultrasound (MSUS) signs, serum uric acid (SUA), and their combined detection for gouty arthritis (GA). Patients and methods In this retrospective study, 70 patients (62 males, 8 females; mean age: 46.1±14.1 years; range, 25 to 86 years) diagnosed with GA (the GA group) between August 2022 and March 2023 and 70 patients (54 females, 16 males; mean age: 49.0±14.1 years; range, 21 to 75 years) diagnosed with rheumatoid arthritis and osteoarthritis during the same period (the non-GA group) were included. The positive rate of MSUS signs and SUA in both groups was recorded to compare the differences. The correlations of MSUS signs and SUA with GA were analyzed using Spearman's rank correlation analysis. The diagnostic values of different MSUS signs, SUA, and their combined detection for GA were analyzed using a receiver operating characteristic, the area under the curve (AUC), sensitivity, specificity, and the Youden index. Results The positive rate of the double contour (DC) sign (chi-squared [χ2 ]=102.935, p<0.001), hyperechoic spots (χ2=56.395, p<0.001), bone erosions (χ2 =10.080, p<0.001), and SUA (χ2 =41.117, p <0.001) were higher in the GA group than in the non-GA group. The positive rate of the DC sign (rs=0.829, p=0.001), hyperechoic spots (rs=0.631, p<0.001), bone erosion (rs=0.268, p=0.001), and SUA (rs=0.542, p<0.001) were positively correlated with GA. Among the single-indicator measures, the DC sign exhibited the highest diagnostic value (AUC=0.907, sensitivity=81.4%, specificity=100%, p<0.001). Among the combined-indicator measures, the DC sign combined with SUA exhibited the highest diagnostic value (AUC=0.929, sensitivity=91.4%, specificity=94.3%, p<0.001), higher than DC sign detection alone. Conclusion The DC sign combined with SUA yielded a high diagnostic value and can thus provide a reliable basis for effectively and efficiently diagnosing GA.
Collapse
Affiliation(s)
- Jinyu Wu
- Department of Information Technology, The Fourth Affiliated Hospital of School of Medicine, and International School of Medicine, International Institutes of Medicine, Zhejiang University, Yiwu, China
| | - Junliang Yan
- Department of Ultrasound in Medicine, The Fourth Affiliated Hospital of School of Medicine, and International School of Medicine, International Institutes of Medicine, Zhejiang University, Yiwu, China
| | - Jie Chang
- Department of Rheumatology, The Fourth Affiliated Hospital of School of Medicine, and International School of Medicine, International Institutes of Medicine, Zhejiang University, Yiwu, China
| | - Chang Li
- Department of Information Technology, The Fourth Affiliated Hospital of School of Medicine, and International School of Medicine, International Institutes of Medicine, Zhejiang University, Yiwu, China
| | - Bin Xia
- Department of Ultrasound in Medicine, The Fourth Affiliated Hospital of School of Medicine, and International School of Medicine, International Institutes of Medicine, Zhejiang University, Yiwu, China
| | - Shanna Liu
- Department of Information Technology, The Fourth Affiliated Hospital of School of Medicine, and International School of Medicine, International Institutes of Medicine, Zhejiang University, Yiwu, China
| | - Xinjian Zhu
- Department of Information Technology, The Fourth Affiliated Hospital of School of Medicine, and International School of Medicine, International Institutes of Medicine, Zhejiang University, Yiwu, China
| | - Qingli Zhou
- Department of Information Technology, The Fourth Affiliated Hospital of School of Medicine, and International School of Medicine, International Institutes of Medicine, Zhejiang University, Yiwu, China
| |
Collapse
|
3
|
Wang Y, Zha Y, Liu L, Liao A, Dong Z, Roberts N, Li Y. Single photon emission computed tomography/computed tomography imaging of gouty arthritis: A new voice. J Transl Int Med 2024; 12:215-224. [PMID: 39081275 PMCID: PMC11284626 DOI: 10.2478/jtim-2022-0066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2023] Open
Abstract
Gouty arthritis, often referred to simply as gout, is a disorder of purine metabolism characterized by the deposition of monosodium urate monohydrate (MSU) crystals in multiple systems and organs, especially in joints and their surrounding soft tissue. Gout is a treatable chronic disease, and the main strategy for effective management is to reverse the deposition of MSU crystals by uric acid reduction, and to prevent gout attacks, tophi deposition and complications, and thereby improve the quality of life. However, the frequent association of gout with other conditions such as hypertension, obesity, cardiovascular disease, diabetes, dyslipidemia, chronic kidney disease (CKD) and kidney stones can complicate the treatment of gout and lead to premature death. Here, we review the use of medical imaging techniques for studying gouty arthritis with special interest in the potential role of single photon emission computed tomography (SPECT)/computed tomography (CT) in the clinical management of gout and complications (e.g., chronic kidney disease and cardiovascular disease).
Collapse
Affiliation(s)
- Yan Wang
- Department of Nuclear Medicine, Guizhou Provincial People's Hospital, Affiliated Hospital of Guizhou University, Guiyang 550002, Guizhou Province, China
| | - Yan Zha
- Department of Nuclear Medicine, Guizhou Provincial People's Hospital, Affiliated Hospital of Guizhou University, Guiyang 550002, Guizhou Province, China
- Departnent of Nephrology, Guizhou Provincial People's Hospital, Affiliated Hospital of Guizhou University, Guiyang 550002, Guizhou Province, China
| | - Lin Liu
- Department of Nuclear Medicine, Guizhou Provincial People's Hospital, Affiliated Hospital of Guizhou University, Guiyang 550002, Guizhou Province, China
- Department of Respiratory and Critical Care Medicine, Guizhou Provincial People's Hospital, Affiliated Hospital of Guizhou University, Guiyang 550002, Guizhou Province, China
| | - Ang Liao
- Department of Nuclear Medicine, Guizhou Provincial People's Hospital, Affiliated Hospital of Guizhou University, Guiyang 550002, Guizhou Province, China
| | - Ziqiang Dong
- Department of Nuclear Medicine, Guizhou Provincial People's Hospital, Affiliated Hospital of Guizhou University, Guiyang 550002, Guizhou Province, China
| | - Neil Roberts
- School of Clinical Sciences, The Queen’s Medical Research Institute, University of Edinburgh, EdinburghEH8 9YL , United Kingdom
| | - Yaying Li
- Department of Nuclear Medicine, Guizhou Provincial People's Hospital, Affiliated Hospital of Guizhou University, Guiyang 550002, Guizhou Province, China
| |
Collapse
|
4
|
Hu F, Xue L, Zhao D, Chen C, Liu G, Yang Q. Spinal gout with intervertebral foramen infiltration: A rare case perfectly mimicking degenerative lumbar disc disease. Exp Ther Med 2024; 27:66. [PMID: 38234610 PMCID: PMC10792407 DOI: 10.3892/etm.2023.12354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Accepted: 11/28/2023] [Indexed: 01/19/2024] Open
Abstract
Spinal gout is a relatively rare disease characterized by significant clinical symptoms. In the current study, the first case of spinal gout with tophus in the intervertebral foramen, which perfectly mimicked degenerative lumbar disc disorders, was presented. The patient was a 57-year-old man with a medical history of gout who had suffered from progressive neurological deterioration for the last 12 months. Imaging examination revealed bilateral stenosis in the L5/S1 intervertebral foramen, mimicking degenerative lumbar disc disease. Nerve root radiculography and blocking were performed and the neurological symptoms were completely relieved. Open surgery was further performed and unexpectedly, the intra-operative findings were amorphous chalky white lesions. Histopathology confirmed the diagnosis of spinal gout. After surgery, the patient was prescribed a medication and achieved complete remission of clinical symptoms. No deterioration was found at the 1-year follow-up. To the best of our knowledge, this is the first report of spinal gout tophus in intervertebral foramen in the literature. It was concluded that, although intraspinal tophaceous gout is relatively rare, orthopedic surgeons should take it into consideration as a differential diagnosis, particularly if the patient has a medical history of gout. Early diagnosis and timely medical management may possibly be able to avoid neurological compromise and the need for surgery.
Collapse
Affiliation(s)
- Fangke Hu
- Department of Spine Surgery, Tianjin Hospital, Tianjin University, Tianjin 300000, P.R. China
| | - Lu Xue
- Department of Spine Surgery, Tianjin Hospital, Tianjin University, Tianjin 300000, P.R. China
| | - Dong Zhao
- Department of Spine Surgery, Tianjin Hospital, Tianjin University, Tianjin 300000, P.R. China
| | - Chao Chen
- Department of Spine Surgery, Tianjin Hospital, Tianjin University, Tianjin 300000, P.R. China
| | - Gang Liu
- Department of Spine Surgery, Tianjin Hospital, Tianjin University, Tianjin 300000, P.R. China
| | - Qiang Yang
- Department of Spine Surgery, Tianjin Hospital, Tianjin University, Tianjin 300000, P.R. China
| |
Collapse
|
5
|
Truthmann J, Freyer Martins Pereira J, Richter A, Schuster F, Witte A, Böhm S, Greser A, Kamin P, Stracke S, Dörr M, Bülow R, Engeli S, Gágyor I, Hummers E, Chenot JF. Prednisolone Versus Colchicine for Acute Gout in Primary Care (COPAGO): protocol for a two-arm multicentre, pragmatic, prospective, randomized, double-blind, controlled clinical trial of prednisolone and colchicine for non-inferiority with a parallel group design. Trials 2023; 24:643. [PMID: 37798801 PMCID: PMC10557330 DOI: 10.1186/s13063-023-07666-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Accepted: 09/20/2023] [Indexed: 10/07/2023] Open
Abstract
BACKGROUND Gout is the most common form of rheumatic disease in which monosodium urate crystals are deposited in the joints followed by acute inflammatory reactions. There are various approved drugs that can be prescribed for pain relief during an acute gout attack. However, to date, no direct comparison of efficacy of colchicine and prednisolone for the treatment of acute gout attacks has been investigated. Furthermore, the majority of previous research studies were not only conducted in tertiary centres but also excluded patients with common comorbidities due to contraindications to naproxen. METHODS This pragmatic, prospective, double-blind, double-dummy, parallel-group, randomized, non-inferiority trial investigates whether prednisolone (intervention) is non-inferior to treatment with colchicine (active control) in patients with acute gout. Adult patients presenting with acute gout to their general practitioners in 60 practices across 3 university sites (Greifswald, Göttingen, and Würzburg) are eligible to participate in the study. Participants in the intervention group receive 30 mg prednisolone for 5 days. Those in the control group receive low-dose colchicine (day 1: 1.5 mg; days 2-5: 1 mg). The primary outcome is the absolute level of the most severe pain on day 3 (in the last 24 h) measured with an 11-item numerical rating scale. Day 0 is the day patients take their study medication for the first time. They are then asked to fill out a study diary the same time each day for pain quantification. Pain scores are used for comparison between the two medications. Secondary outcomes are average response to treatment, swelling, tenderness and physical function of the joint, patients' global assessment of treatment success, use of additional pain medication and non-pharmacological pain therapies. For safety reasons, potential side effects and course of systolic blood pressure are assessed. DISCUSSION This trial will provide evidence on the effectiveness of pain reduction and side effects of colchicine and prednisolone in acute gout in primary care. TRIAL REGISTRATION ClinicalTrials.gov Identifier: NCT05698680 first posted on January 26, 2023 (retrospectively registered). URL of trial registry record: https://clinicaltrials.gov/study/NCT05698680.
Collapse
Affiliation(s)
- Julia Truthmann
- Department of General Practice, Institute for Community Medicine, University Medical Center Greifswald, Greifswald, Germany.
| | - Julia Freyer Martins Pereira
- Department of General Practice, Institute for Community Medicine, University Medical Center Greifswald, Greifswald, Germany
| | - Adrian Richter
- Department of Prevention Research and Social Medicine, Institute for Community Medicine, University Medical Center Greifswald, Greifswald, Germany
| | - Franziska Schuster
- Coordinating Center for Clinical Studies, University Medical Center Greifswald, Greifswald, Germany
| | - Amelie Witte
- Coordinating Center for Clinical Studies, University Medical Center Greifswald, Greifswald, Germany
| | - Susanne Böhm
- Coordinating Center for Clinical Studies, University Medical Center Greifswald, Greifswald, Germany
| | - Alexandra Greser
- Department of General Practice, University Hospital Würzburg, Würzburg, Germany
| | - Petra Kamin
- Department of General Practice, University Medical Center Göttingen, Göttingen, Germany
| | - Sylvia Stracke
- Department of Internal Medicine, University Medical Center, Greifswald, Germany
| | - Marcus Dörr
- Department of Internal Medicine, University Medical Center, Greifswald, Germany
| | - Robin Bülow
- Institute for Radiology and Neuroradiology, University Medical Center Greifswald, Greifswald, Germany
| | - Stefan Engeli
- Coordinating Center for Clinical Studies, University Medical Center Greifswald, Greifswald, Germany
- Institute of Pharmacology, University Medical Center Greifswald, Greifswald, Germany
| | - Ildikó Gágyor
- Department of General Practice, University Hospital Würzburg, Würzburg, Germany
| | - Eva Hummers
- Department of General Practice, University Medical Center Göttingen, Göttingen, Germany
| | - Jean-François Chenot
- Department of General Practice, Institute for Community Medicine, University Medical Center Greifswald, Greifswald, Germany
| |
Collapse
|
6
|
Subhas N, Wu F, Fox MG, Nacey N, Aslam F, Blankenbaker DG, Caracciolo JT, DeJoseph DA, Frick MA, Jawetz ST, Said N, Sandstrom CK, Sharma A, Stensby JD, Walker EA, Chang EY. ACR Appropriateness Criteria® Chronic Extremity Joint Pain-Suspected Inflammatory Arthritis, Crystalline Arthritis, or Erosive Osteoarthritis: 2022 Update. J Am Coll Radiol 2023; 20:S20-S32. [PMID: 37236743 DOI: 10.1016/j.jacr.2023.02.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 02/27/2023] [Indexed: 05/28/2023]
Abstract
Evaluation for suspected inflammatory arthritis as a cause for chronic extremity joint pain often relies on imaging. It is essential that imaging results are interpreted in the context of clinical and serologic results to add specificity because there is significant overlap of imaging findings among the various types of arthritis. This document provides recommendations for imaging evaluation of specific types of inflammatory arthritis, including rheumatoid arthritis, seronegative spondyloarthropathy, gout, calcium pyrophosphate dihydrate disease (or pseudogout), and erosive osteoarthritis. The ACR Appropriateness Criteria are evidence-based guidelines for specific clinical conditions that are reviewed annually by a multidisciplinary expert panel. The guideline development and revision process support the systematic analysis of the medical literature from peer reviewed journals. Established methodology principles such as Grading of Recommendations Assessment, Development, and Evaluation or GRADE are adapted to evaluate the evidence. The RAND/UCLA Appropriateness Method User Manual provides the methodology to determine the appropriateness of imaging and treatment procedures for specific clinical scenarios. In those instances in which peer reviewed literature is lacking or equivocal, experts may be the primary evidentiary source available to formulate a recommendation.
Collapse
Affiliation(s)
| | - Fangbai Wu
- Research Author, Cleveland Clinic Foundation, Cleveland, Ohio.
| | - Michael G Fox
- Program Director and Panel Chair, Mayo Clinic Arizona, Phoenix, Arizona
| | - Nicholas Nacey
- Panel Vice-Chair, University of Virginia Health System, Charlottesville, Virginia
| | - Fawad Aslam
- Mayo Clinic, Scottsdale, Arizona, Rheumatologist
| | - Donna G Blankenbaker
- University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Jamie T Caracciolo
- Section Head, Musculoskeletal Imaging, Moffitt Cancer Center and University of South Florida Morsani College of Medicine, Tampa, Florida; and Chair, MSK-RADS (Bone) Committee
| | | | - Matthew A Frick
- Chair of Education, Department of Radiology, Chair of Musculoskeletal Imaging, Mayo Clinic, Rochester, Minnesota
| | | | - Nicholas Said
- Duke University Medical Center, Durham, North Carolina
| | - Claire K Sandstrom
- University of Washington Medical Center, Seattle, Washington; Committee on Emergency Radiology-GSER
| | - Akash Sharma
- Mayo Clinic, Jacksonville, Florida; Commission on Nuclear Medicine and Molecular Imaging
| | | | - Eric A Walker
- Penn State Milton S. Hershey Medical Center, Hershey, Pennsylvania and Uniformed Services University of the Health Sciences, Bethesda, Maryland
| | - Eric Y Chang
- Specialty Chair, VA San Diego Healthcare System, San Diego, California
| |
Collapse
|
7
|
Sanghavi N, Korem S, Dey S, Wasserman A, Ash J. Dual-Energy Computed Tomography (DECT) Resolves the Diagnostic Dilemma in an Atypically Presenting Case of Gout. Cureus 2023; 15:e38247. [PMID: 37252479 PMCID: PMC10225115 DOI: 10.7759/cureus.38247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/28/2023] [Indexed: 05/31/2023] Open
Abstract
Gout is a common inflammatory arthropathy that presents as acute monoarthritis, most commonly of the first metatarsophalangeal (MTP) joint. Chronic polyarticular involvement may lead to confusion with other inflammatory arthropathies, including rheumatoid arthritis (RA). A thorough history, physical examination, synovial fluid analysis, and imaging are keys to establishing a correct diagnosis. Although a synovial fluid analysis remains the gold standard, the affected joints may be difficult to access by arthrocentesis. In cases where a large monosodium urate (MSU) crystal deposition is in the soft tissues - the ligaments, bursae, and tendons, it becomes a clinical impossibility. In such cases, dual-energy computed tomography (DECT) can assist in differentiating gout from other inflammatory arthropathies, including RA. Additionally, DECT can perform quantitative analysis of tophaceous deposits and, therefore, assess response to treatment.
Collapse
Affiliation(s)
- Nirali Sanghavi
- Internal Medicine, Westchester Medical Center, Valhalla, USA
| | | | - Subo Dey
- Internal Medicine, Westchester Medical Center, Valhalla, USA
| | - Amy Wasserman
- Rheumatology, Westchester Medical Center, Valhalla, USA
| | - Julia Ash
- Rheumatology, Westchester Medical Center, Valhalla, USA
| |
Collapse
|
8
|
Zheng WY, Zhan WF, Wang JY, Deng WM, Hung YK, Wang W, Jiang GH. Detailed analysis of the association between urate deposition and bone erosion in gout: a dual-energy computed tomography study. Front Endocrinol (Lausanne) 2023; 14:1167756. [PMID: 37143721 PMCID: PMC10153093 DOI: 10.3389/fendo.2023.1167756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Accepted: 03/24/2023] [Indexed: 05/06/2023] Open
Abstract
Objective This study aimed to analyze the effect of urate deposition (UD) on bone erosion and examine the association between the volume of monosodium urate (MSU) crystals and an improved bone erosion score method, as measured in the metatarsophalangeal (MTP) joints of patients with gout. Materials and methods Fifty-six patients diagnosed with gout using the 2015 European League Against Rheumatism and American College of Rheumatology criteria were enrolled. MSU crystals volume at each MTP joint was measured using dual-energy computed tomography (DECT) images. The degree of bone erosion was evaluated with the modified Sharp/van der Heijde (SvdH) erosion scoring system based on CT images. Differences in clinical features between patients with (UD group) and without (non-UD group) UD were assessed, and the correlation between erosion scores and urate crystal volume was analyzed. Results The UD and non-UD groups comprised 30 and 26 patients, respectively. Among the 560 MTP joints assessed, 80 showed MSU crystal deposition, and 108 showed bone erosion. Bone erosion occurred in both groups but was significantly less severe in the non-UD group (p <0.001). Both groups had equivalent levels of serum uric acid (p=0.200). Symptom duration was significantly longer in the UD group (p=0.009). The UD group also had a higher rate of kidney stones (p=0.023). The volume of MSU crystals was strongly and positively associated with the degree of bone erosion (r=0.714, p <0.001). Conclusion This study found that patients with UD show significant increased bone erosion than those without UD. The volume of MSU crystals is associated with the improved SvdH erosion score based on CT images, regardless of serum uric acid level, demonstrating the potential of combining DECT and serum uric acid measurements in helping optimize the management of patients with gout.
Collapse
Affiliation(s)
- Wan-Yi Zheng
- Department of Medical Imaging, The Affiliated Guangdong Second Provincial General Hospital of Jinan University, Guangzhou, China
| | - Wen-Feng Zhan
- Department of Medical Imaging, Guangdong Second Provincial General Hospital, Guangzhou, China
| | | | - Wei-Ming Deng
- Department of Rheumatology and Immunology, Guangdong Second Provincial General Hospital, Guangzhou, China
| | - Yu-Kai Hung
- Department of Rheumatology and Immunology, Guangdong Second Provincial General Hospital, Guangzhou, China
| | - Wei Wang
- Department of Medical Imaging, Guangdong Second Provincial General Hospital, Guangzhou, China
| | - Gui-Hua Jiang
- Department of Medical Imaging, The Affiliated Guangdong Second Provincial General Hospital of Jinan University, Guangzhou, China
- *Correspondence: Gui-Hua Jiang,
| |
Collapse
|
9
|
Sotniczuk M, Nowakowska-Płaza A, Wroński J, Wisłowska M, Sudoł-Szopińska I. The Clinical Utility of Dual-Energy Computed Tomography in the Diagnosis of Gout-A Cross-Sectional Study. J Clin Med 2022; 11:jcm11175249. [PMID: 36079179 PMCID: PMC9457243 DOI: 10.3390/jcm11175249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 08/26/2022] [Accepted: 09/04/2022] [Indexed: 11/18/2022] Open
Abstract
Dual-energy computed tomography (DECT) is an imaging technique that detects monosodium urate (MSU) deposits. This study aimed to assess the clinical utility of DECT in the diagnosis of gout. A total of 120 patients with clinical suspicion of gout who underwent DECT were retrospectively enrolled. The sensitivity and specificity of DECT alone, American College of Rheumatology (ACR)/European Alliance of Associations for Rheumatology (EULAR) classification criteria without DECT, and ACR/EULAR criteria with DECT were assessed. Additionally, an analysis of gout risk factors was performed. When artifacts were excluded, any MSU volume provided the best diagnostic value of DECT (AUC = 0.872, 95% CI 0.806−0.938). DECT alone had a sensitivity of 90.4% and specificity of 74.5%. Although ACR/EULAR criteria without DECT provided better diagnostic accuracy than DECT alone (AUC = 0.926, 95% CI 0.878−0.974), the best value was obtained when combing both (AUC = 0.957, 95% CI 0.924−0.991), with 100% sensitivity and 76.6% specificity. In univariate analysis, risk factors for gout were male sex, presence of tophi, presence of MSU deposits on DECT, increased uric acid in serum (each p < 0.001), and decreased glomerular filtration rate (GFR) (p = 0.029). After logistic regression, only increased serum uric acid (p = 0.034) and decreased GFR (p = 0.018) remained independent risk factors for gout. Our results suggest that DECT significantly increases the sensitivity of the ACR/EULAR criteria in the diagnosis of gout.
Collapse
Affiliation(s)
- Maria Sotniczuk
- Department of Radiology, National Institute of Geriatrics, Rheumatology and Rehabilitation, 02-637 Warsaw, Poland
- Correspondence:
| | - Anna Nowakowska-Płaza
- Department of Rheumatology, National Institute of Geriatrics, Rheumatology and Rehabilitation, 02-637 Warsaw, Poland
| | - Jakub Wroński
- Department of Rheumatology, National Institute of Geriatrics, Rheumatology and Rehabilitation, 02-637 Warsaw, Poland
| | - Małgorzata Wisłowska
- Department of Rheumatology, National Institute of Geriatrics, Rheumatology and Rehabilitation, 02-637 Warsaw, Poland
| | - Iwona Sudoł-Szopińska
- Department of Radiology, National Institute of Geriatrics, Rheumatology and Rehabilitation, 02-637 Warsaw, Poland
| |
Collapse
|
10
|
Zidane M, Jungkunz HW, Kahle B, Miller A, Ochsendorf F, Sunderkötter C, Traidl-Hoffmann C, Wurpts G, Nast A. S1-Leitlinie: Differenzialdiagnose akuter und chronischer Rötungen der Unterschenkel. J Dtsch Dermatol Ges 2022; 20:1041-1048. [PMID: 35881086 DOI: 10.1111/ddg.14816_g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Accepted: 04/16/2022] [Indexed: 11/30/2022]
Affiliation(s)
- Miriam Zidane
- Klinik für Dermatologie, Venerologie und Allergologie, Division of Evidence-Based Medicine (dEBM), Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin
| | | | - Birgit Kahle
- Klinik für Dermatologie, Venerologie und Allergologie, Universitätsklinikum Schleswig-Holstein Campus Lübeck
| | | | - Falk Ochsendorf
- Klinik für Dermatologie, Venerologie und Allergologie, Universitätsklinikum Frankfurt, Frankfurt am Main
| | - Cord Sunderkötter
- Universitätsklinik und Poliklinik für Dermatologie und Venerologie, Universitätsklinikum Halle (Saale)
| | - Claudia Traidl-Hoffmann
- Lehrstuhl und Hochschulambulanz für Umweltmedizin, Medizinische Fakultät Augsburg, Universitätsklinikum Augsburg
| | - Gerda Wurpts
- Klinik für Dermatologie und Allergologie, Aachener Comprehensive Allergy Center (ACAC), Universitätsklinik der RWTH Aachen
| | - Alexander Nast
- Klinik für Dermatologie, Venerologie und Allergologie, Division of Evidence-Based Medicine (dEBM), Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin
| |
Collapse
|
11
|
Zidane M, Jungkunz HW, Kahle B, Miller A, Ochsendorf F, Sunderkötter C, Traidl-Hoffmann C, Wurpts G, Nast A. S1 guideline: Differential diagnosis of acute and chronic redness of the lower legs. J Dtsch Dermatol Ges 2022; 20:1041-1047. [PMID: 35758562 DOI: 10.1111/ddg.14816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Accepted: 04/16/2022] [Indexed: 11/28/2022]
Abstract
Acute or chronic redness of the lower leg is a frequent reason for visits to clinics and practices. The differential diagnosis is often challenging. The aim of this guideline is to define criteria and procedures for the differential diagnosis of acute or chronic, unilateral or bilateral redness of the lower leg. Finding the correct diagnosis is essential for selecting an appropriate treatment and can help to reduce the inappropriate use of antibiotics. The guideline committee identified the most relevant differential diagnoses: 1. erysipelas, 2. stasis dermatitis, 3. hyperergic ictus reaction, 4. superficial and deep vein thrombosis, 5. gout, 6. chronic allergic contact dermatitis, and 7. acute toxic or allergic contact dermatitis. Algorithms/diagnostic pathways, each of which can be broken down into anamnesis, clinical examination, and diagnostics, have been developed for these seven diagnoses. In addition, the guideline group identified over 40 other relevant diagnoses and summarized their characteristics in a table to facilitate further differential diagnoses.
Collapse
Affiliation(s)
- Miriam Zidane
- Department of Dermatology, Venereology and Allergology, Division of Evidence-Based Medicine (dEBM), Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Germany
| | | | - Birgit Kahle
- Department of Dermatology, Venereology and Allergology, University Hospital Schleswig-Holstein Campus Lübeck, Germany
| | - Anya Miller
- Practice Dr.med. Anya Miller, Berlin, Germany
| | - Falk Ochsendorf
- Department of Dermatology, Venereology and Allergology, University Hospital Frankfurt, Frankfurt am Main, Germany
| | - Cord Sunderkötter
- Department of Dermatology and Venereology, University Hospital Halle (Saale), Germany
| | - Claudia Traidl-Hoffmann
- Institute of Environmental Medicine (IEM), Medical Faculty Augsburg, University Hospital Augsburg, Germany
| | - Gerda Wurpts
- Department of Dermatology and Allergology, Aachen Comprehensive Allergy Center (ACAC), University Hospital of RWTH Aachen, Germany
| | - Alexander Nast
- Department of Dermatology, Venereology and Allergology, Division of Evidence-Based Medicine (dEBM), Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Germany
| |
Collapse
|
12
|
McPherson M, Aslam F. Green Pixels on DECT: Is it Gout? Am J Med Sci 2022; 364:e27-e28. [DOI: 10.1016/j.amjms.2022.02.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 10/06/2021] [Accepted: 02/04/2022] [Indexed: 11/01/2022]
|
13
|
Shin DH, Song YS, Choi Y, Yoo WH, Kummel F, Park EH. Clumpy artifacts can be differentiated from tophi with DECT: comparison between gout-free and gouty patients. Br J Radiol 2022; 95:20210990. [PMID: 34767489 PMCID: PMC8722253 DOI: 10.1259/bjr.20210990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
OBJECTIVES To accurately differentiate clumpy artifacts from tophi with foot and ankle DECT. METHODS AND MATERIALS In session 1, 108 clumpy artifacts from 35 patients and 130 tophi images from 25 patients were analyzed. Reviewers classified green pixelation according to anatomic location, shape (linear, stippled, angular, oval), and height and width ratio. In session 2, green pixelation confined to the tendon was evaluated (shape, height and width ratio, occupied area in the tendon, accompanied peritendinous green pixelation). RESULTS In session 1, while tophi were noted at various locations, almost all clumpy artifacts were located at the tendon (99%, p < 0.0001). Most clumpy artifacts were linear, stippled, and wide, while most tophi were angular and oval (p < 0.05). In session 2, the shape of green pixelation from clumpy artifacts and tophi was significantly different (p < 0.0001) and most clumpy artifacts occupied less than 50% of the tendon (p = 0.02), and most tophi were accompanied by peritendinous green pixelation (p < 0.0001). Univariant logistic regression showed that tophi were significantly correlated with peritendinous deposits, angular and oval shape, and more than 50% of the tendon (p < 0.05). CONCLUSION Clumpy artifacts can be differentiated from tophi in DECT. Clumpy artifacts typically are located in the tendon with a linear or stippled shape, wide, and less than 50% of a tendon's cross-section. Tophi, on the other hand, typically are oval, larger than 50% of the tendon's cross-section, and associated with adjacent peritendinous green pixelation. ADVANCES IN KNOWLEDGE Clumpy artifacts can be differentiated from tophi in image findings by their location and shape.
Collapse
Affiliation(s)
- Dong Han Shin
- Department of Radiology, Jeonbuk National University Medical School, Jeonju, Republic of Korea
| | - You Seon Song
- Department of Radiology, Pusan National University Hospital, Biomedical Research Institute, Pusan, Republic of Korea
| | | | | | - Florian Kummel
- SHS DI CT M&S PCMM, Siemens Healthcare GmbH, Forchheim, Germany
| | | |
Collapse
|
14
|
Shang J, Zhou LP, Wang H, Liu B. Diagnostic Performance of Dual-energy CT Versus Ultrasonography in Gout: A Meta-analysis. Acad Radiol 2022; 29:56-68. [PMID: 32980243 DOI: 10.1016/j.acra.2020.08.030] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 08/18/2020] [Accepted: 08/20/2020] [Indexed: 12/12/2022]
Abstract
OBJECTIVE Dual-energy computed tomography (DECT), along with ultrasound (US), has been increasingly utilized for the diagnosis of gout because of its noninvasive advantages. However, the superiority of DECT over US remains controversial. This meta-analysis was performed to investigate whether DECT is superior to US in the diagnosis of gout. METHODS A comprehensive search of PubMed, EMBASE, Cochrane, and Web of Science databases was conducted for potentially eligible articles. Studies that evaluated the utility of DECT or US for gout diagnosis were qualified. Two distinctive ultrasonographic features of gout, namely, the double contour sign and the presence of tophus, were also assessed. The methodological quality of the included studies was evaluated using the Quality Assessment of Diagnostic Accuracy Studies-2 criteria. Besides, the subgroup analyses of early disease duration (≤ 2 years) was also performed. RESULTS Twenty-eight studies were included in the meta-analysis. The pooled sensitivity and specificity of DECT were 0.89 (0.80-0.94) and 0.91 (0.88-0.94), respectively. The pooled sensitivity and specificity of US were 0.70 (0.58-0.79) and 0.95 (0.87-0.98), respectively, for double contour sign; 0.57 (0.38-0.74) and 0.99 (0.88-1.00), respectively, for tophus; and 0.84 (0.73-0.91) and 0.84 (0.78-0.89), respectively, for overall consideration of US signs. At the early disease duration (≤ 2 years), the pooled sensitivity and specificity were 0.75 (0.60-0.86) and 0.85 (0.75-0.91), respectively, for DECT; 0.93 (0.72-0.99) and 0.80 (0.71-0.86), respectively, for overall consideration of US signs. CONCLUSION DECT and US showed promising accuracy for gout diagnosis. DECT has higher sensitivity, specificity, and AUC than overall consideration of US signs and thus has a better diagnostic ability in diagnosing gout. Moreover, the diagnostic sensitivity of DECT is lower than that of overall consideration of US signs at less than 2 years' disease duration.
Collapse
|
15
|
Nhi LHH, Minh LHN, Tieu TM, Mostafa EM, Karimzadeh S, Dung NM, Hai Nam N, Phuoc LV, Huy NT. Role of Dual-Energy Computed Tomography in the Identification of Monosodium Urate Deposition in Gout Patients: A Comprehensive Analysis of 828 Joints According to Structural Joint Damage. Cureus 2021; 13:e19930. [PMID: 34966618 PMCID: PMC8710919 DOI: 10.7759/cureus.19930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/26/2021] [Indexed: 11/07/2022] Open
Abstract
Background Dual-energy computed tomography (DECT) has become a promising, non-invasive procedure for the visualization, characterization, and quantification of monosodium urate (MSU) crystals, which aids clinicians in the diagnosis of gout. In this study, we aimed to examine the diagnostic accuracy of DECT in the evaluation of gout. Methodology This cross-sectional retrospective study included patients who were clinically diagnosed with gout and underwent a DECT scan. Results A majority (80.4%) of the MSU deposits were found in the ankle joints. The presence of MSU deposits on DECT scan was highly correlated with bone erosion in the upper limb (odds ratio [OR] = 132; 95% confidence interval [CI] = 17.3-1004.3), bone sclerosis in the lower limb (OR = 36.4; 95% CI = 15.4-86.1), bone erosion in metacarpophalangeal joints (OR = 160; 95% CI = 42.7-600.2), and bone sclerosis in metatarsophalangeal joints (OR = 35.6; 95% CI = 15.5-81.9). Using linear regression analysis on patient-level data, correlations were found between DECT MSU crystal deposition and damage on all categories of structural joint damage showing significant association with erosion (r = 0.91, p < 0.001) and space narrowing (r = 0.75, p < 0.001) but not with joints having periarticular calcification (r = 0.52, p < 0.041). Conclusions Our study established DECT as a valid method for detecting MSU deposits and their association with structural joint deterioration in a Vietnamese population.
Collapse
Affiliation(s)
- Le Huu Hanh Nhi
- Department of Radiology, Vinmec Healthcare System, Ho Chi Minh City, VNM
| | - Le Huu Nhat Minh
- Faculty of Medicine, University of Medicine and Pharmacy at Ho Chi Minh City, Ho Chi Minh City, VNM
| | | | | | - Sedighe Karimzadeh
- Online Research Club, School of Tropical Medicine and Global Health, Nagasaki University, Nagasaki, JPN
| | - Nguyen Minh Dung
- Department of Medicine, Vietnam National University, Ho Chi Minh City, VNM
| | | | - Le Van Phuoc
- Department of Radiology, Cho Ray Hospital, Ho Chi Minh City, VNM
| | - Nguyen Tien Huy
- School of Tropical Medicine and Global Health, Nagasaki University, Nagasaki, JPN
| |
Collapse
|
16
|
Boudabbous S, Paulin EN, Delattre BMA, Hamard M, Vargas MI. Spinal disorders mimicking infection. Insights Imaging 2021; 12:176. [PMID: 34862958 PMCID: PMC8643376 DOI: 10.1186/s13244-021-01103-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Accepted: 10/03/2021] [Indexed: 12/23/2022] Open
Abstract
Spinal infections are very commonly encountered by radiologists in their routine clinical practice. In case of typical MRI features, the diagnosis is relatively easy to interpret, all the more so if the clinical and laboratory findings are in agreement with the radiological findings. In many cases, the radiologist is able to make the right diagnosis, thereby avoiding a disco-vertebral biopsy, which is technically challenging and associated with a risk of negative results. However, several diseases mimic similar patterns, such as degenerative changes (Modic) and crystal-induced discopathy. Differentiation between these diagnoses relies on imaging changes in endplate contours as well as in disc signal. This review sought to illustrate the imaging pattern of spinal diseases mimicking an infection and to define characteristic MRI and CT patterns allowing to distinguish between these different disco-vertebral disorders. The contribution of advanced techniques, such as DWI and dual-energy CT (DECT) is also discussed.
Collapse
Affiliation(s)
- Sana Boudabbous
- Division of Radiology, Department of Diagnosis, Geneva University Hospitals, Rue Gabrielle-Perret-Gentil 4, 1211, Geneva 14, Switzerland. .,Faculty of Medicine of the Geneva University, Geneva, Switzerland.
| | - Emilie Nicodème Paulin
- Division of Radiology, Medical Imaging Department, Hospital of Neuchatel, Neuchâtel, Switzerland
| | - Bénédicte Marie Anne Delattre
- Division of Radiology, Department of Diagnosis, Geneva University Hospitals, Rue Gabrielle-Perret-Gentil 4, 1211, Geneva 14, Switzerland.,Faculty of Medicine of the Geneva University, Geneva, Switzerland
| | - Marion Hamard
- Division of Radiology, Department of Diagnosis, Geneva University Hospitals, Rue Gabrielle-Perret-Gentil 4, 1211, Geneva 14, Switzerland
| | - Maria Isabel Vargas
- Faculty of Medicine of the Geneva University, Geneva, Switzerland.,Division of Neuroradiology, Diagnostic Department, University Hospitals of Geneva, Geneva, Switzerland
| |
Collapse
|
17
|
Anjum ZI, Bacha R, Manzoor I, Gilani SA. Reliability of knee joint sonography in the evaluation of gouty arthritis. J Ultrason 2021; 21:e300-e305. [PMID: 34970441 PMCID: PMC8678699 DOI: 10.15557/jou.2021.0051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Accepted: 07/14/2021] [Indexed: 11/22/2022] Open
Abstract
Objective: To determine the reliability of knee joint sonography in the evaluation of gouty arthritis. Methodology: A search of Google Scholar, PubMed, NCBI, MEDLINE, and Medscape databases, from 1988 up to 2020. The key search terms used were knee joint; knee joint ultrasound; gout; gouty arthritis, knee joint pain; sensitivity; specificity. The reviewer independently screened the titles and abstracts of the relevant articles and full-text downloads to determine whether the inclusion or exclusion criteria were met. Results: In total, 103 articles were identified through the database search. In addition, 11 articles were identified through other sources. Then, screening was performed, and 9 articles were removed due to duplication. Further screening was done for 105 articles, and 27 articles were excluded due to insufficient information. Seventy-eight full-text articles were assessed for eligibility. A total of 13 full-text articles were excluded due to research performed on animals, as the study had been designed as a review of only human studies. Sixty-three studies were included that had a qualitative synthesis. Conclusion: The knee is a weight-bearing joint and may be affected by a myriad of different pathological conditions, therefore a proper diagnosis is of prime importance for a proper management plan. Ultrasound is a non-invasive, radiation-free, and readily available modality that has high sensitivity and specificity in the evaluation of gouty arthritis.
Collapse
|
18
|
Stewart S, Su I, Gamble GD, Dalbeth N. Diagnostic value of different imaging features for patients with suspected gout: A network meta-analysis. Semin Arthritis Rheum 2021; 51:1251-1257. [PMID: 34763198 DOI: 10.1016/j.semarthrit.2021.10.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 10/06/2021] [Accepted: 10/25/2021] [Indexed: 12/27/2022]
Abstract
OBJECTIVE Microscopic identification of monosodium urate (MSU) crystals is the gold standard for gout diagnosis. However, joint aspiration is not always practical, and imaging is increasingly used in clinical practice. This study aimed to assess the diagnostic accuracy of imaging features for gout compared with microscopy, using network meta-analysis methodology. METHODS MEDLINE, EMBASE, PubMed and Cochrane databases were searched for studies reporting on the use of imaging modalities to diagnose gout in patients with an unclear diagnosis or suspected gout, which was later confirmed by microscopy. A combination of direct and indirect comparisons were performed by network meta-analysis to evaluate the combined odds ratios for sensitivity, specificity, and accuracy. To assist interpretation, the surface under the cumulative ranking curve (SUCRA) scores were calculated to provide a ranking of the imaging features. RESULTS Fifteen eligible studies were included. Compared to the gold standard microscopic identification of MSU crystals, dual energy computed tomography (DECT) MSU crystal deposition and ultrasound double contour had greater sensitivity than ultrasound tophus. DECT, ultrasound double contour sign and ultrasound tophus all had greater specificity than ultrasound aggregates. The SUCRA scores ranked DECT as highest for overall accuracy, followed by ultrasound double contour, aggregates, and tophus, while ultrasound snowstorm was ranked the lowest. However, there were no significant differences in the odds ratios for overall accuracy between these imaging features. CONCLUSION DECT and ultrasound are both useful modalities for the detection of imaging features of MSU crystal deposition, and have a similar overall diagnostic accuracy for gout diagnoses.
Collapse
Affiliation(s)
- Sarah Stewart
- Department of Medicine, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand.
| | - Isabel Su
- Department of Medicine, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand.
| | - Gregory D Gamble
- Department of Medicine, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand.
| | - Nicola Dalbeth
- Department of Medicine, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand.
| |
Collapse
|
19
|
Chabernaud Negrier A, Taihi L, Vicaut E, Richette P, Bardin T, Lioté F, Ea HK, Bousson V. Distribution of bony erosions in feet and performance of two bone erosion scores: A dual-energy computed tomography study of 61 patients with gout. PLoS One 2021; 16:e0259194. [PMID: 34727118 PMCID: PMC8562819 DOI: 10.1371/journal.pone.0259194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Accepted: 10/14/2021] [Indexed: 11/18/2022] Open
Abstract
OBJECTIVES To assess the distribution of bone erosions and two erosion scores in the feet of patients with gout and analyze the association between erosion scores and monosodium urate (MSU) crystal deposition using dual-energy computed tomography (DECT). MATERIALS AND METHODS We included all patients who underwent DECT of both feet between 2016 and 2019 in our radiology department, with positive detection of MSU deposits. Data on sex, age, treatment, serum urate, and DECT urate volumes were obtained. CT images were analyzed to score bone erosions in 31 sites per foot by using the semi-quantitative method based on the Rheumatoid Arthritis MRI Scoring (RAMRIS) system and the Dalbeth-simplified score. Reproducibility for the two scores was calculated with intraclass correlation coefficients (ICCs). Correlations between clinical features, erosion scores and urate crystal volume were analyzed by the Spearman correlation coefficient (r). RESULTS We studied 61 patients (mean age 62.0 years); 3,751 bones were scored. The first metatarsophalangeal joint and the midfoot were the most involved in terms of frequency and severity of bone erosions. The distribution of bone erosions was not asymmetrical. The intra- and inter-observer reproducibility was similar for the RAMRIS and Dalbeth-simplified scores (ICC 0.93 vs 0.94 and 0.96 vs 0.90). DECT urate volume was significantly correlated with each of the two erosion scores (r = 0.58-0.63, p < 0.001). There was a high correlation between the two scores (r = 0.96, p < 0.001). CONCLUSIONS DECT demonstrates that foot erosions are not asymmetric in distribution and predominate at the first ray and midfoot. The two erosion scores are significantly correlated with DECT urate volume. An almost perfect correlation between the RAMRIS and Dalbeth-simplified scores is observed.
Collapse
Affiliation(s)
| | - Lokmane Taihi
- Service de Radiologie, Hôpital Lariboisière, AP-HP.Nord-Université de Paris, Paris, France
| | - Eric Vicaut
- Unité de Recherche Clinique, Hôpitaux Lariboisière, Fernand Widal, Saint Louis, AP-HP.Nord-Université de Paris, Paris, France
| | - Pascal Richette
- Service de Rhumatologie, INSERM UMR 1132, Hôpital Lariboisière, AP-HP.Nord-Université de Paris, Paris, France
| | - Thomas Bardin
- Service de Rhumatologie, INSERM UMR 1132, Hôpital Lariboisière, AP-HP.Nord-Université de Paris, Paris, France
| | - Frédéric Lioté
- Service de Rhumatologie, INSERM UMR 1132, Hôpital Lariboisière, AP-HP.Nord-Université de Paris, Paris, France
| | - Hang-Korng Ea
- Service de Rhumatologie, INSERM UMR 1132, Hôpital Lariboisière, AP-HP.Nord-Université de Paris, Paris, France
| | - Valérie Bousson
- Service de Radiologie, Hôpital Lariboisière, AP-HP.Nord-Université de Paris, Paris, France
| |
Collapse
|
20
|
Diagnosing Spinal Gout: A Rare Case of Back Pain and Fever. Case Rep Rheumatol 2021; 2021:7976420. [PMID: 34631191 PMCID: PMC8494596 DOI: 10.1155/2021/7976420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Accepted: 09/11/2021] [Indexed: 11/17/2022] Open
Abstract
Gout is a common inflammatory arthritis that has a high prevalence worldwide. It is characterized by monosodium urate deposition, usually affecting the joints and soft tissue of the lower extremities. Urate deposition in the axial skeleton resulting in spinal gout is rare. However, it seems to be more prevalent than usually thought, largely because it is underdiagnosed. Imaging findings are, for the most part, nonspecific and often mimic infectious etiologies. Definitive diagnosis requires pathological examination. Thus, it can be easily missed. We present a 41-year-old male with a seven-year history of untreated gout who came in with severe back pain, fevers, and radiculopathy. He was initially diagnosed with vertebral osteomyelitis. However, after a biopsy, spinal gout was confirmed. Spinal gout can be misdiagnosed as vertebral osteomyelitis given the similarities in presentation and imaging findings. This case report highlights the importance of keeping spinal gout as a differential of vertebral osteomyelitis, especially in patients with long-standing or uncontrolled gout with tophi.
Collapse
|
21
|
The role of dual energy computed tomography in the differentiation of acute gout flares and acute calcium pyrophosphate crystal arthritis. Clin Rheumatol 2021; 41:223-233. [PMID: 34626261 PMCID: PMC8724058 DOI: 10.1007/s10067-021-05949-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 09/27/2021] [Accepted: 09/29/2021] [Indexed: 12/27/2022]
Abstract
Objectives To analyse the diagnostic impact of dual energy computed tomography (DECT) in acute gout flares and acute calcium pyrophosphate (CPP) crystal arthritis when compared to the gold standard of arthrocentesis with compensated polarised light microscopy. Microscopy results were also compared to musculoskeletal ultrasound (MUS), conventional radiographs, and the suspected clinical diagnosis (SCD). Methods Thirty-six patients with a suspected gout flare (n = 24) or acute CPP crystal arthritis (n = 11, n = 1 suffered from neither) who received a DECT and underwent arthrocentesis were included. Two independent readers assessed DECT images for signs of monosodium urate crystals or calcium pyrophosphate deposition. Results Sensitivity of DECT for gout was 63% (95% CI 0.41–0.81) with a specificity of 92% (0.41–0.81) while sensitivity and specificity for acute CPP arthritis were 55% (0.23–0.83) and 92% (0.74–0.99), respectively. MUS had the highest sensitivity of all imaging modalities with 92% (0.73–0.99) and a specificity of 83% (0.52–0.98) for gout, while sensitivity and specificity for acute CPP crystal arthritis were 91% (0.59–1.00) and 92% (0.74–0.99), respectively. Conclusion DECT is an adequate non-invasive diagnostic tool for acute gout flares but might have a lower sensitivity than described by previous studies. Both MUS and SCD had higher sensitivities than DECT for acute gout flares and acute CPP crystal arthritis. Supplementary Information The online version contains supplementary material available at 10.1007/s10067-021-05949-4.
Collapse
|
22
|
Christiansen SN, Hammer HB, Torp-Pedersen S, Terslev L. Comment on: Dual-energy computed tomography vs ultrasound, alone or combined, for the diagnosis of gout: a prospective study of accuracy. Rheumatology (Oxford) 2021; 60:e367-e368. [PMID: 33711101 DOI: 10.1093/rheumatology/keab243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Accepted: 03/06/2021] [Indexed: 11/13/2022] Open
Affiliation(s)
- Sara Nysom Christiansen
- Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Rigshospitalet, Glostrup, Denmark
| | - Hilde B Hammer
- Rheumatology Department, Diakonhjemmet Hospital.,Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Søren Torp-Pedersen
- Department of Radiology, Bispebjerg and Frederiksberg Hospital, Copenhagen, Denmark.,Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Lene Terslev
- Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Rigshospitalet, Glostrup, Denmark.,Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| |
Collapse
|
23
|
Singh JA, Budzik JF, Becce F, Pascart T. Dual-energy computed tomography vs ultrasound, alone or combined, for the diagnosis of gout: a prospective study of accuracy. Rheumatology (Oxford) 2021; 60:4861-4867. [PMID: 33410491 DOI: 10.1093/rheumatology/keaa923] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 12/06/2020] [Indexed: 12/27/2022] Open
Abstract
OBJECTIVE To examine the accuracy of dual-energy CT (DECT) vs ultrasound or their combination for the diagnosis of gout. METHODS Using prospectively collected data from an outpatient rheumatology clinic at a tertiary-care hospital, we examined the diagnostic accuracy of either modality alone or their combination, by anatomical site (feet/ankles and/or knees), for the diagnosis of gout. We used two standards: (i) demonstration of monosodium urate crystals in synovial fluid (gold), and (ii) modified (excluding DECT and ultrasound) 2015 ACR-EULAR gout classification criteria (silver). RESULTS Of the 147 patients who provided data, 48 (33%) had synovial fluid analysis performed (38 were monosodium urate-crystal positive) and mean symptom duration was 9.2 years. One hundred (68%) patients met the silver standard. Compared with the gold standard, diagnostic accuracy statistics for feet/ankles DECT, feet/ankles ultrasound, knees DECT and knees ultrasound were, respectively: sensitivity: 87%, 84%, 91% and 58%; specificity: 100%, 60%, 87% and 80%; positive predictive value: 100%, 89%, 97% and 92%; negative predictive value: 67%, 50%, 70% and 33%; area under the receiver operating characteristic curve: 0.93, 0.72, 0.89 and 0.66. Combining feet/ankles DECT with ultrasound or knees DECT with ultrasound led to a numerically higher sensitivity compared with DECT alone, but overall accuracy was lower. Similarly, combining imaging knees to feet/ankles also yielded a numerically higher sensitivity and negative predictive values compared with feet/ankles DECT alone, without differences in overall accuracy. Findings were replicated compared with the silver standard, but with lower numbers. CONCLUSIONS Feet/ankles or knees DECT alone had the best overall accuracy for gout diagnosis. The DECT-US combination or multiple joint imaging offered no additional increase in overall diagnostic accuracy.
Collapse
Affiliation(s)
- Jasvinder A Singh
- Medicine Service, Birmingham Veterans Affairs (VA) Medical Center.,Department of Medicine at School of Medicine.,Division of Epidemiology at School of Public Health, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Jean-François Budzik
- Department of Diagnostic and Interventional Radiology, Lille Catholic Hospitals, University of Lille, Lomme.,ULR 4490, Marrow Adiposity and Bone Laboratory (MABLab), University of Lille, Lille, France
| | - Fabio Becce
- Department of Diagnostic and Interventional Radiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Tristan Pascart
- ULR 4490, Marrow Adiposity and Bone Laboratory (MABLab), University of Lille, Lille, France.,Department of Rheumatology, Lille Catholic Hospitals, University of Lille, Lomme, France
| |
Collapse
|
24
|
Ahn SJ, Zhang D, Levine BD, Dalbeth N, Pool B, Ranganath VK, Benhaim P, Nelson SD, Hsieh SS, FitzGerald JD. Limitations of dual-energy CT in the detection of monosodium urate deposition in dense liquid tophi and calcified tophi. Skeletal Radiol 2021; 50:1667-1675. [PMID: 33532938 DOI: 10.1007/s00256-021-03715-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 01/11/2021] [Accepted: 01/12/2021] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Dual-energy CT (DECT) detection of monosodium urate (MSU) crystal deposition has demonstrated good sensitivity and specificity in patients with established gout. However, limitations have been reported with early disease and with low urate burden. We aimed to study the performance of DECT in the detection and quantification of MSU deposition in solid and liquid tophi. MATERIALS AND METHODS Patient-derived solid and liquid tophi, suspensions of commercial synthetic, and in-house synthetic MSU crystals were prepared at varying concentrations. DECT was performed at 80 kVp and 150 kVp, and post-processed using Syngo Via gout software (Siemens) that color-coded urate and cortical bone as green and purple, respectively. DECT findings were correlated with ultrasound and microscopic findings. The protocol was reviewed by IRB and considered a non-human subject research. RESULTS DECT did not detect urate deposition in either patient-derived liquid tophi or in-house synthetic crystals at any concentration. Lowering the post-processing minimum threshold increased the detection of in-house synthetic crystals but did not change the detection of patient-derived liquid tophi. Areas of calcium-rich purple color-coded regions, masking detection of urate, within the solid tophi and surrounding liquid tophi were noted on DECT. Histology showed co-presence of calcium along with MSU deposition in these. CONCLUSION This study illustrates important limitations of DECT for liquid tophi due to subthreshold CT attenuation and for calcified tophi due to the obscuration of urate by calcium. Urate may be either undetectable or underestimated by DECT when these conditions are present.
Collapse
Affiliation(s)
- Se Jin Ahn
- Department of Radiology, University of Washington School of Medicine, 1959 NE Pacific St, Box 357115, Seattle, WA, 98195, USA.
| | - Dawen Zhang
- Department of Medicine, University of Illinois, Chicago, IL, USA.,Department of Medicine, Jesse Brown Veterans Affairs Medical Center, Chicago, IL, USA
| | - Benjamin D Levine
- David Geffen School of Medicine, Department of Radiology, University of California, Los Angeles, CA, USA
| | - Nicola Dalbeth
- Department of Medicine, University of Auckland, Auckland, New Zealand
| | - Bregina Pool
- Department of Medicine, University of Auckland, Auckland, New Zealand
| | - Veena K Ranganath
- David Geffen School of Medicine, Department of Medicine, University of California, Los Angeles, CA, USA
| | - Prosper Benhaim
- David Geffen School of Medicine, Department of Surgery, University of California, Los Angeles, CA, USA
| | - Scott D Nelson
- David Geffen School of Medicine, Department of Pathology, University of California, Los Angeles, CA, USA
| | - Scott S Hsieh
- Department of Radiology, Mayo Clinic, Rochester, MN, USA
| | - John D FitzGerald
- David Geffen School of Medicine, Department of Surgery, University of California, Los Angeles, CA, USA.,Department of Medicine, Veteran Affairs Administration, Los Angeles, CA, USA
| |
Collapse
|
25
|
Khanna I, Pietro R, Ali Y. What Has Dual Energy CT Taught Us About Gout? Curr Rheumatol Rep 2021; 23:71. [PMID: 34259946 DOI: 10.1007/s11926-021-01035-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/27/2021] [Indexed: 12/27/2022]
Abstract
PURPOSE OF THE REVIEW Dual energy computed tomography (DECT) scan has emerged as a useful diagnostic tool in the diagnosis of gout over recent years. Here, we review the role of DECT in the context of typical and atypical gout, including its role in identifying extra-articular monosodium urate (MSU) deposition. RECENT FINDINGS DECT has been found to be more accurate than ultrasound in detecting extra-articular MSU deposition in soft tissue. It has the ability to identify axial MSU deposition in gout patients with non-specific back pain. For individuals with no other clear etiology, this potentially implicates MSU as the cause of the pain. DECT also has the ability to detect vascular MSU deposition. This correlates with high coronary calcium scores and elevated Framingham cardiovascular risk. DECT continues to aid our understanding of articular and extra-articular MSU deposition, including the role of vascular MSU deposition on cardiovascular health. Not only does it allow quantification of urate burden but it can also potentially avoid invasive diagnostic procedures. The limitations and advantages of DECT are further explored in this article.
Collapse
Affiliation(s)
- Ira Khanna
- Division of Rheumatology, Icahn School of Medicine, Mount Sinai Hospital, New York, NY, USA.
| | - Rebecca Pietro
- Department of Internal Medicine, Icahn School of Medicine, Mount Sinai West, New York, NY, USA
| | - Yousaf Ali
- Division of Rheumatology, Icahn School of Medicine, Mount Sinai Hospital, New York, NY, USA
| |
Collapse
|
26
|
Cipolletta E, Di Battista J, Di Carlo M, Di Matteo A, Salaffi F, Grassi W, Filippucci E. Sonographic estimation of monosodium urate burden predicts the fulfillment of the 2016 remission criteria for gout: a 12-month study. Arthritis Res Ther 2021; 23:185. [PMID: 34243813 PMCID: PMC8268270 DOI: 10.1186/s13075-021-02568-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Accepted: 06/28/2021] [Indexed: 12/27/2022] Open
Abstract
Objective To investigate whether baseline monosodium urate (MSU) burden estimated by ultrasound (US) predicts the achievement of the 2016 remission criteria for gout after 12 months. Methods In this 12-month prospective, observational and single-center study, patients with gout fulfilling all the domains of the 2016 preliminary remission criteria for gout at baseline and on urate-lowering therapy (ULT) for at least the preceding 6 months were consecutively enrolled. The US findings indicative of MSU deposits [aggregates, double contour (DC) sign, and/or tophi] were identified according to the Outcome Measure in Rheumatology US Working Group definitions. The US MSU burden was estimated by evaluating elbows, wrists, 2nd metacarpophalangeal joints, knees, ankles, and 1st metatarsophalangeal joints. Results Remission criteria were fulfilled in 21 (42.0%) out of 50 patients at 12 months. The baseline US MSU burden was significantly lower in patients who achieved remission than in those who did not fulfill the remission criteria at 12 months (1.9±1.8 vs 5.1±3.1, p<0.01). US scores and ongoing flare prophylaxis were the only significant predictors of remission with an odds ratio of 10.83 [(95%CI=1.14–102.59), p=0.04] for the absence of MSU deposits, 5.53 [(95%CI=1.34–22.76), p<0.01] for the absence of aggregates, 7.33 [(95%CI=1.71–31.44), p<0.01] for the absence of DC sign, 3.88 [(95%CI=1.08–13.92), p=0.04] for the absence of tophi, and 0.23 [(95%CI=0.07–0.75), p=0.02] for ongoing flare prophylaxis. Conclusion In gout, baseline US estimation of MSU burden is an independent predictor of the achievement of the remission criteria at 12 months. Supplementary Information The online version contains supplementary material available at 10.1186/s13075-021-02568-x.
Collapse
Affiliation(s)
- Edoardo Cipolletta
- Rheumatology Unit, Department of Clinical and Molecular Sciences, Polytechnic University of Marche, "Carlo Urbani" Hospital, Via Aldo Moro 25, Jesi (Ancona), Italy.
| | - Jacopo Di Battista
- Rheumatology Unit, Department of Clinical and Molecular Sciences, Polytechnic University of Marche, "Carlo Urbani" Hospital, Via Aldo Moro 25, Jesi (Ancona), Italy
| | - Marco Di Carlo
- Rheumatology Unit, Department of Clinical and Molecular Sciences, Polytechnic University of Marche, "Carlo Urbani" Hospital, Via Aldo Moro 25, Jesi (Ancona), Italy
| | - Andrea Di Matteo
- Rheumatology Unit, Department of Clinical and Molecular Sciences, Polytechnic University of Marche, "Carlo Urbani" Hospital, Via Aldo Moro 25, Jesi (Ancona), Italy
| | - Fausto Salaffi
- Rheumatology Unit, Department of Clinical and Molecular Sciences, Polytechnic University of Marche, "Carlo Urbani" Hospital, Via Aldo Moro 25, Jesi (Ancona), Italy
| | - Walter Grassi
- Rheumatology Unit, Department of Clinical and Molecular Sciences, Polytechnic University of Marche, "Carlo Urbani" Hospital, Via Aldo Moro 25, Jesi (Ancona), Italy
| | - Emilio Filippucci
- Rheumatology Unit, Department of Clinical and Molecular Sciences, Polytechnic University of Marche, "Carlo Urbani" Hospital, Via Aldo Moro 25, Jesi (Ancona), Italy
| |
Collapse
|
27
|
Abdellatif W, Ding J, Khorshed D, Shojania K, Nicolaou S. Unravelling the mysteries of gout by multimodality imaging. Semin Arthritis Rheum 2021; 50:S17-S23. [PMID: 32620197 DOI: 10.1016/j.semarthrit.2020.04.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Gout is a common inflammatory arthritis that manifests as an aggregate of variably symptomatic monosodium urate crystals (MSU) in the joints and surrounding tissues in addition to multisystem involvement such as genitourinary and cardiovascular systems. In recent decades, there has been a documented increase in the prevalence and incidence of gout. Risk factors for gout include obesity, dietary influences, hypertension, renal impairment, and diuretic use. A prompt diagnosis followed by uric acid lowering treatment prior to the onset of bone destruction is the goal in any suspected case of gout. Advanced imaging modalities, such as dual energy computed tomography (DECT) and ultrasonography (US), employed for the diagnosis of gout are each accompanied by advantages and disadvantages. Conventional radiography (CR), although useful in visualizing joint erosions and mineralization, is limited in its ability to diagnose gout flare. Although synovial fluid aspiration remains the gold standard for MSU crystal visualization, less-invasive imaging modalities are preferred to avoid potential complications. DECT and US in particular are useful in the diagnosis of gout. In this review, we will discuss the current state and role of imaging in the detection of gout.
Collapse
Affiliation(s)
- Waleed Abdellatif
- Department of Radiology, Department of Emergency and Trauma Radiology, University of British Columbia/ Vancouver General Hospital, 899W 12th Ave, Vancouver, BC V5Z 1M9, Canada
| | - Jeffrey Ding
- Faculty of Science, University of British Columbia, Vancouver, BC, Canada
| | | | - Kam Shojania
- Department of Rheumatology, University of British Columbia, Vancouver, BC, Canada
| | - Savvas Nicolaou
- Department of Radiology, Department of Emergency and Trauma Radiology, University of British Columbia/ Vancouver General Hospital, 899W 12th Ave, Vancouver, BC V5Z 1M9, Canada.
| |
Collapse
|
28
|
Shang J, Li XH, Lu SQ, Shang Y, Li LL, Liu B. Gout of feet and ankles in different disease durations: diagnostic value of single-source DECT and evaluation of urate deposition with a novel semi-quantitative DECT scoring system. Adv Rheumatol 2021; 61:36. [PMID: 34118994 DOI: 10.1186/s42358-021-00194-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Accepted: 06/02/2021] [Indexed: 12/22/2022] Open
Abstract
OBJECTIVES To investigate the diagnostic performance of single-source dual-energy computed tomography (DECT) based on gemstone spectral imaging technology (including Discovery CT750HD and Revolution CT) in patients with suspected feet/ankles gouty arthritis, and evaluate the urate deposition with a novel semi-quantitative DECT scoring system. METHODS A total of 196 patients were consecutively included. Feet and ankles were evaluated in all patients by single-source DECT scan. The 2015 EULAR/ACR criteria were used as the reference for the diagnosis of gout. The sensitivity, specificity, and area under the receiver operating characteristic curve (AUC) of DECT for the diagnosis of gout in the early (≤1 year), middle (1-3 years), and late (> 3 years) disease durations were calculated. Besides, a novel semi-quantitative DECT scoring system was assessed for the measurement of urate deposition, and the correlation between the scores and the clinical and serological data were also evaluated. Moreover, the influences of artifacts on the diagnostic performance of DECT were also determined. RESULTS The sensitivity, specificity, and AUC of DECT in 196 patients were 38.10, 96.43%, and 0.673 in the early-stage group; 62.96, 100.00%, and 0.815 in the middle-stage group; and 77.55, 87.50%, and 0.825 in the late-stage group, respectively. The overall diagnostic accuracies in the AUC of DECT (Discovery CT750HD and Revolution CT) in the middle and late stages of gout were higher than that in the early stage of gout. Besides, the monosodium urate crystals were deposited on the first metatarsophalangeal joints and ankles/midfeet. Age, the presence of tophus, bone erosion, and disease duration considerably affected the total urate score. No statistical difference in the positive detection of nail artifact, skin artifact, vascular calcification, and noise artifact was found between the case and control groups. CONCLUSION DECT (Discovery CT750HD and Revolution CT) showed promising diagnostic accuracy for the detection of urate crystal deposition in gout but had limited diagnostic sensitivity for short-stage gout. Longer disease duration, the presence of tophus, and bone erosion were associated with the urate crystal score system. The artifacts do not remarkably affect the diagnostic performance of DECT in gout.
Collapse
Affiliation(s)
- Jin Shang
- Department of Radiology, The First Affiliated Hospital of Anhui Medical University, 210 Jixi Road, Hefei, 230022, Anhui, China
| | - Xiao-Hu Li
- Department of Radiology, The First Affiliated Hospital of Anhui Medical University, 210 Jixi Road, Hefei, 230022, Anhui, China
| | - Shu-Qin Lu
- Department of Radiology, The First Affiliated Hospital of Anhui Medical University, 210 Jixi Road, Hefei, 230022, Anhui, China
| | - Yi Shang
- Outpatient Department of The Second Central Division, The General Hospital of PLA, Beijing, 100853, China
| | - Lu-Lu Li
- Department of Radiology, The First Affiliated Hospital of Anhui Medical University, 210 Jixi Road, Hefei, 230022, Anhui, China
| | - Bin Liu
- Department of Radiology, The First Affiliated Hospital of Anhui Medical University, 210 Jixi Road, Hefei, 230022, Anhui, China.
| |
Collapse
|
29
|
Xie Y, Li L, Luo R, Xu T, Yang L, Xu F, Lin H, Zhang G, Zhang X. Diagnostic efficacy of joint ultrasonography, dual-energy computed tomography and minimally invasive arthroscopy on knee gouty arthritis, a comparative study. Br J Radiol 2021; 94:20200493. [PMID: 33861155 DOI: 10.1259/bjr.20200493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVE This study aimed to investigate the diagnostic performance of minimally invasive arthroscopy for knee gout when comparing with joint ultrasonography and dual-energy computed tomography (DECT). METHODS From January 2016 to December 2018, 121 inpatients with knee joint swelling and pain were prospectively enrolled, including 63 gout patients and 58 non-gout patients. All patients underwent pre-operative ultrasonography and DECT to evaluate knee joint monosodium urate (MSU) deposits, followed by minimally invasive arthroscopy. The gold-standard for gout diagnosis was defined as the detection of MSU crystals in the synovial fluid under polarizing microscopic or pathological analysis. RESULTS The diagnostic results of ultrasonic double contour sign, hyperechogenic foci, MSU deposition (detected by DECT), MSU deposition (detected by arthroscopy) and MSU deposition in cartilage (detected by arthroscopy) were significantly associated with that of the gold-standard. Except for hyperechogenic foci, the other four indexes had high sensitivity and specificity (approximately or over 80%) and a large odds ratio (OR) (14.73 to 36.56), indicating good diagnostic performance. Detection of MSU deposition in cartilage by arthroscopy had a good diagnostic agreement with the ultrasonic double contour sign (κ = 0.711, p < 0.001). CONCLUSION Joint ultrasonography, DECT, and minimally invasive arthroscopy had high sensitivity and specificity for the diagnosis of knee gouty arthritis. Minimally invasive arthroscopy was superior to joint ultrasonography and DECT, which can be a useful supplement for the diagnosis of gout. ADVANCES IN KNOWLEDGE This is the first study comparing the diagnostic performance for knee gout among the joint ultrasonography, DECT, and minimally invasive arthroscopy.
Collapse
Affiliation(s)
- Yuesheng Xie
- The Second School of Clinical Medicine, Southern Medical University, Guangzhou, China.,Department of Rheumatology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Ling Li
- Department of Rheumatology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Riqiang Luo
- Department of Rheumatology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Ting Xu
- Department of Rheumatology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Lin Yang
- Department of Radiology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Fangping Xu
- Department of Pathology and Laboratory Medicine, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Haobo Lin
- Department of Rheumatology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Guangfeng Zhang
- Department of Rheumatology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Xiao Zhang
- The Second School of Clinical Medicine, Southern Medical University, Guangzhou, China.,Department of Rheumatology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| |
Collapse
|
30
|
Singh JA, Budzik JF, Becce F, Pascart T. Comment on: Dual-energy computed tomography versus ultrasound, alone or combined, for the diagnosis of gout: a prospective study of accuracy: Reply. Rheumatology (Oxford) 2021; 60:e372-e374. [PMID: 33784386 DOI: 10.1093/rheumatology/keab320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Accepted: 03/24/2021] [Indexed: 11/14/2022] Open
Affiliation(s)
- Jasvinder A Singh
- Medicine Service, Birmingham Veterans Affairs (VA) Medical Center, 510 20th Street South, FOT 805B, Birmingham, AL 35233, USA.,Department of Medicine at School of Medicine.,Division of Epidemiology at School of Public Health, University of Alabama at Birmingham, 1720 2nd Ave South, Birmingham, AL 35294-0022, USA
| | - Jean-François Budzik
- Department of Diagnostic and Interventional Radiology, Lille Catholic Hospitals, University of Lille, 59160 Lomme, France.,ULR 4490, Marrow Adiposity and Bone Laboratory (MABLab), University of Lille, 59000 Lille, France
| | - Fabio Becce
- Department of Diagnostic and Interventional Radiology, Lausanne University Hospital and University of Lausanne, 1011 Lausanne, Switzerland
| | - Tristan Pascart
- ULR 4490, Marrow Adiposity and Bone Laboratory (MABLab), University of Lille, 59000 Lille, France.,Department of Rheumatology, Lille Catholic Hospitals, University of Lille, 59160 Lomme, France
| |
Collapse
|
31
|
A crystal conundrum: a review of investigation and management of gout for the hand surgeon. EUROPEAN JOURNAL OF PLASTIC SURGERY 2021. [DOI: 10.1007/s00238-020-01753-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
32
|
Ziegeler K, Eshed I, Diekhoff T, Hermann KG. Imaging of Joints and Bones in Autoinflammation. J Clin Med 2020; 9:E4074. [PMID: 33348664 PMCID: PMC7766736 DOI: 10.3390/jcm9124074] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Revised: 12/11/2020] [Accepted: 12/14/2020] [Indexed: 12/19/2022] Open
Abstract
Autoinflammatory disorders are commonly characterized by seemingly unprovoked systemic inflammation mainly driven by cells and cytokines of the innate immune system. In many disorders on this spectrum, joint and bone involvement may be observed and imaging of these manifestations can provide essential diagnostic information. This review aimed to provide a comprehensive overview of the imaging characteristics for major diseases and disease groups on the autoinflammatory spectrum, including familial Mediterranean fever (FMF), Behçet disease (BD), crystal deposition diseases (including gout), adult-onset Still's disease (AoSD), and syndromatic synovitis, acne, pustulosis, hyperostosis, and osteitis (SAPHO)/chronic recurrent multifocal osteomyelitis (CRMO). Herein, we discuss common and distinguishing imaging characteristics, phenotypical overlaps with related diseases, and promising fields of future research.
Collapse
Affiliation(s)
- Katharina Ziegeler
- Department of Radiology, Charité—Universitätsmedizin Berlin, 10117 Berlin, Germany; (T.D.); (K.G.H.)
| | - Iris Eshed
- Department of Diagnostic Imaging, Sheba Medical Center, Tel Giborim Affiliated with the Sackler School of Medicine, Tel Aviv University, 52621 Tel Aviv, Israel;
| | - Torsten Diekhoff
- Department of Radiology, Charité—Universitätsmedizin Berlin, 10117 Berlin, Germany; (T.D.); (K.G.H.)
| | - Kay Geert Hermann
- Department of Radiology, Charité—Universitätsmedizin Berlin, 10117 Berlin, Germany; (T.D.); (K.G.H.)
| |
Collapse
|
33
|
Quin K, Madhoun HM. Ultrasound as a Biomarker in Rheumatic Diseases. Diagnostics (Basel) 2020; 10:diagnostics10110933. [PMID: 33182835 PMCID: PMC7697963 DOI: 10.3390/diagnostics10110933] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 11/06/2020] [Accepted: 11/09/2020] [Indexed: 12/24/2022] Open
Abstract
Rheumatic diseases are a heterogeneous group of disorders which often affect the musculoskeletal system. Given the lack of definitive testing, there are limited diagnostic tools at clinicians’ disposal. Over the recent decades, ultrasonography has gained widespread use within rheumatology due to its accessibility, safety, and relatively low cost. This review describes the clinical utility of ultrasound as a biomarker in the diagnosis and management of several rheumatic diseases.
Collapse
|
34
|
Min HK, Cho H, Park SH. Pilot study: asymptomatic hyperuricemia patients with obesity and nonalcoholic fatty liver disease have increased risk of double contour sign. Korean J Intern Med 2020; 35:1517-1523. [PMID: 31181878 PMCID: PMC7652642 DOI: 10.3904/kjim.2018.448] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Accepted: 03/19/2019] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND/AIMS Double contour sign (DCS) is a representative ultrasonographic finding in gout. DCS is evidence of monosodium urate deposit in gouty arthritis and has been identified in some patients with asymptomatic hyperuricemia. However, the specific characteristics of asymptomatic hyperuricemia in patients with DCS have not yet been revealed. METHODS We enrolled patients with incidentally found hyperuricemia. Baseline characteristics were compared between asymptomatic hyperuricemia patients with and without DCS. Logistic regression analysis was performed to determine associated factors for DCS in patients with asymptomatic hyperuricemia. RESULTS A total of 62 patients with asymptomatic hyperuricemia were enrolled, and 22 of the patients showed DCS. The metatarsophalangeal were the most commonly affected joints, and differences between asymptomatic hyperuricemia patients with and without DCS were seen in aspects of class II obesity and nonalcoholic fatty liver disease (NAFLD). Multivariate logistic regression analysis demonstrated that class II obesity and NAFLD significantly increased the risk of DCS in asymptomatic hyperuricemia patients (odds ratio [OR], 6.58, p = 0.022; OR, 5.21, p = 0.020, respectively). CONCLUSION Asymptomatic hyperuricemia patients with class II obesity and NAFLD had increased risk of DCS. Determining the presence of crystal deposition, such as DCS, among patients with asymptomatic hyperuricemia might help determine whether early pharmacologic intervention is needed, especially with severe obesity or NAFLD.
Collapse
Affiliation(s)
- Hong Ki Min
- Division of Rheumatology, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
- Division of Rheumatology, Department of Internal Medicine, Konkuk University Medical Center, Seoul, Korea
| | - Hyonjoung Cho
- Division of Rheumatology, Department of Internal Medicine, The Armed Forces Capital Hospital, Armed Forces Medical Command, Seongnam, Korea
| | - Sung-Hwan Park
- Division of Rheumatology, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
- Correspondence to Sung-Hwan Park, M.D. Division of Rheumatology, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 222 Banpo-daero, Seocho-gu, Seoul 06591, Korea Tel: +82-2-2258-6011 Fax: +82-2-599-3589 E-mail:
| |
Collapse
|
35
|
Takakubo Y, Imamura Y, Tezuka H, Okada S, Naganuma Y, Ito J, Sugawara M, Yang S, Oki H, Sasaki A, Sasaki K, Konta T, Takagi M. Rapid disappearance of gouty tophi of the foot by resection of massive gouty tophi of the opposite foot in a patient with hyperuricaemia: a case report. Mod Rheumatol Case Rep 2020; 4:116-121. [PMID: 33086973 DOI: 10.1080/24725625.2019.1680135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Gouty tophi occur less frequently and disappear only with modern medication therapy for symptomatic or asymptomatic hyperuricaemia. However, the medication may require a long time to take effect due to the systemic urate pool associated with massive gouty tophi. We present the case of a 37-year-old woman who suffered from massive gouty tophi of both feet due to hyperuricaemia. After resection of the massive gouty tophi from her right foot and treatment with uricemia medication, the gouty tophi of her opposite foot disappeared rapidly due to reducing the patient's systemic urate pool with intensification of drug medication.
Collapse
Affiliation(s)
- Yuya Takakubo
- Department of Orthopaedic Surgery, Yamagata University Faculty of Medicine, Yamagata-City, Japan
| | - Yuta Imamura
- Department of Orthopaedic Surgery, Yamagata University Faculty of Medicine, Yamagata-City, Japan
| | - Hiroshi Tezuka
- Department of Orthopaedic Surgery, Yamagata University Faculty of Medicine, Yamagata-City, Japan
| | - Soichiro Okada
- Department of Orthopaedic Surgery, Yamagata University Faculty of Medicine, Yamagata-City, Japan
| | - Yasushi Naganuma
- Department of Orthopaedic Surgery, Yamagata University Faculty of Medicine, Yamagata-City, Japan
| | - Juji Ito
- Department of Orthopaedic Surgery, Yamagata University Faculty of Medicine, Yamagata-City, Japan
| | - Masato Sugawara
- Department of Orthopaedic Surgery, Yamagata University Faculty of Medicine, Yamagata-City, Japan
| | - Suran Yang
- Department of Orthopaedic Surgery, Yamagata University Faculty of Medicine, Yamagata-City, Japan
| | - Hiroharu Oki
- Department of Orthopaedic Surgery, Yamagata Saisei Hospital, Yamagata-City, Japan
| | - Akiko Sasaki
- Department of Orthopaedic Surgery, Yamagata University Faculty of Medicine, Yamagata-City, Japan
| | - Kan Sasaki
- Department of Orthopaedic Surgery, Yamagata Saisei Hospital, Yamagata-City, Japan
| | - Tsuneo Konta
- Department of Public Health and Hygiene, Yamagata University Faculty of Medicine, Yamagata-City, Japan
| | - Michiaki Takagi
- Department of Orthopaedic Surgery, Yamagata University Faculty of Medicine, Yamagata-City, Japan
| |
Collapse
|
36
|
谢 一, 王 昱, 邓 雪, 耿 研, 季 兰, 张 卓. [Analysis of risk factors influencing the detection rate of urate crystal by dual energy computed tomography]. BEIJING DA XUE XUE BAO. YI XUE BAN = JOURNAL OF PEKING UNIVERSITY. HEALTH SCIENCES 2020; 53:261-265. [PMID: 33879895 PMCID: PMC8072442 DOI: 10.19723/j.issn.1671-167x.2021.02.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Indexed: 06/12/2023]
Abstract
OBJECTIVE To explore the risk factors of detection of uric acid crystals by dual energy CT (DECT) in patients with gout diagnosed by gold standard. METHODS From June 2011 to December 2018, clinical data of 29 patients were collected who were diagnosed with acute or chronic gout by positive polarized light analysis of joint synovial fluid in First Hospital of Peking University. Chi-square test, Logistic regression and t-test were used. The relationship between DECT and the clinical data, laboratory examination and drug treatment were analyzed. RESULTS In this study, 29 patients were included, of whom, 22 patients were detected with uric acid crystals by DECT, and 7 patients were not. According to whether the uric acid crystals were detected or not by DECT, the patients were divided into two groups. Compared with the negative group, the patients were older in positive group [(47±12) vs. (39±11) years, P=0.15], had higher body bass index (BMI) [(27.9±3.7) vs. (22.8±2.1) kg/m2, P=0.002], longer gout disease duration [(135±102) vs.(45±53) months, P=0.035], higher in the highest serum uric acid in history [(643±121) vs. (543±103) μmol/L, P=0.043]. Although uric acid near DECT in positive group was higher than in negative group, there was no statistical difference [(558±150) vs. (513±89) μmol/L, P=0.497]. Comparing positive group with negative group, the percentage of the patients in acute phase was higher than in chronic phase [18(81.8%) vs. 4(57%), P=0.311];the percentage of the patients taking uric-acid-lowering drugs was higher than the other group [22(100%) vs. 5 (71%), P=0.052];the percentage of the patients with recurrent typical attacks was higher than that of those without typical attacks [22 (100%) vs.6 (85%), P=0.241]. The consistency of symptoms and the finding of uric acid crystals by DECT had been compared between the joints. The right knee joint had the highest consistency (Kappa=0.627), followed by the left MTP1 (Kappa=0.58), the right metatarsophalangeal 1(MTP1, Kappa=0.551) and the left knee (Kappa=0.494), all of which had statistical significance. The consistency of the ankle joint was lower (the right ankle joint: Kappa=0.19, the left ankle joint: Kappa=0.256), showing no statistical significance. BMI (kg/m2) [2.307 (1.139-4.670), P=0.02], gout duration (years) [0.306 (0.906-4.881), P=0.186], and the highest uric acid level in history (mg/dL) [0.023 (0.981-2.764), P=0.137] had relationship to the positive result of urate crystals in DECT. CONCLUSION Gout patients with larger BMI, higher previous highest uric acid value and longer gout duration had higher sensitivity of the positive result in DECT.
Collapse
Affiliation(s)
- 一帆 谢
- />北京大学第一医院风湿免疫科,北京 100034Department of Rheumatology and Clinical Immunology, Peking University First Hospital, Beijing 100034, China
| | - 昱 王
- />北京大学第一医院风湿免疫科,北京 100034Department of Rheumatology and Clinical Immunology, Peking University First Hospital, Beijing 100034, China
| | - 雪蓉 邓
- />北京大学第一医院风湿免疫科,北京 100034Department of Rheumatology and Clinical Immunology, Peking University First Hospital, Beijing 100034, China
| | - 研 耿
- />北京大学第一医院风湿免疫科,北京 100034Department of Rheumatology and Clinical Immunology, Peking University First Hospital, Beijing 100034, China
| | - 兰岚 季
- />北京大学第一医院风湿免疫科,北京 100034Department of Rheumatology and Clinical Immunology, Peking University First Hospital, Beijing 100034, China
| | - 卓莉 张
- />北京大学第一医院风湿免疫科,北京 100034Department of Rheumatology and Clinical Immunology, Peking University First Hospital, Beijing 100034, China
| |
Collapse
|
37
|
Schwabl C, Taljanovic M, Widmann G, Teh J, Klauser AS. Ultrasonography and dual-energy computed tomography: impact for the detection of gouty deposits. Ultrasonography 2020; 40:197-206. [PMID: 33307617 PMCID: PMC7994744 DOI: 10.14366/usg.20063] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Accepted: 10/02/2020] [Indexed: 12/27/2022] Open
Abstract
Ultrasonography (US) and dual-energy computed tomography (DECT) are useful and sensitive diagnostic tools to identify monosodium urate deposits in joints and soft tissues. The purpose of this review is to overview the imaging findings obtained by US and DECT in patients with gout, to understand the strengths and weaknesses of each imaging modality, and to evaluate the added value of using both modalities in combination.
Collapse
Affiliation(s)
- Christoph Schwabl
- Department of Radiology, Medical University Innsbruck, Innsbruck, Austria
| | - Mihra Taljanovic
- Department of Medical Imaging, Banner University Medical Center, The University of Arizona, College of Medicine, Tucson, AZ, USA
| | - Gerlig Widmann
- Department of Radiology, Medical University Innsbruck, Innsbruck, Austria
| | - James Teh
- Department of Radiology, Nuffield Orthopaedic Centre, Oxford University Hospitals NHS Trust, Oxford, UK
| | - Andrea S Klauser
- Department of Radiology, Medical University Innsbruck, Innsbruck, Austria
| |
Collapse
|
38
|
|
39
|
Gout of ankle and foot: DECT versus US for crystal detection. Clin Rheumatol 2020; 40:1533-1537. [PMID: 32880052 DOI: 10.1007/s10067-020-05378-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Revised: 08/23/2020] [Accepted: 08/27/2020] [Indexed: 12/27/2022]
Abstract
OBJECTIVE To compare dual-energy computed tomography (DECT) and ultrasound (US) in detecting monosodium urate (MSU) crystals in the ankle and foot in patients with acute gouty arthritis. METHODS Bilateral ankle and foot were examined by DECT and US and the differences between the findings were compared. RESULTS A total of 50 patients underwent DECT and US examinations. At the patient level, the overall positivity of crystal deposition detected by DECT was higher than that by US (92% vs 68%, P = 0.005). The agreement of detecting crystal deposition between DECT and US was not very strong (К = 0.44, P = 0.003). At different joint/area levels, there were significant differences between the two examinations in the area of the dorsum (36% vs 12%, P = 0.009) and metatarsal bone (34% vs 12%, P = 0.017), but the sensitivity of DECT and US was similar in the first metatarsophalangeal joint (MTP) and ankle areas (P>0.05). Agreement between the two examinations in the ankle and first MTP was very strong (К = 0.86, P < 0.001; К = 0.79, P < 0.001, respectively). However, agreement between the two examinations in other joints/areas was poor. CONCLUSION These findings indicated that DECT should be the first choice for acute gouty arthritis in patients with ankle and foot involvement. Key Points • There is little data regarding DECT and US in detecting MSU crystals in the ankle and foot in patients with acute gouty arthritis. • The overall positivity of crystal deposition detected by DECT was higher than that by US, but the sensitivity of DECT and US was similar in the first metatarsophalangeal joint (MTP) and ankle areas. • Agreement between the two examinations in the ankle and first MTP was very strong; however, agreement between the two examinations in other joints/areas was poor.
Collapse
|
40
|
Hammer HB, Karoliussen L, Terslev L, Haavardsholm EA, Kvien TK, Uhlig T. Ultrasound shows rapid reduction of crystal depositions during a treat-to-target approach in gout patients: 12-month results from the NOR-Gout study. Ann Rheum Dis 2020; 79:1500-1505. [PMID: 32669301 DOI: 10.1136/annrheumdis-2020-217392] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 06/06/2020] [Accepted: 06/24/2020] [Indexed: 12/17/2022]
Abstract
OBJECTIVES As ultrasound is sensitive for detecting crystal depositions in patients with gout, our objectives were to explore the main locations for depositions and the extent of dissolution of depositions during a treat-to-target approach with urate lowering treatment (ULT) in patients with gout. METHODS Patients with a recent flare of gout were consecutively included in this single-centre study and managed by a treat-to-target approach with ULT. All patients were assessed at baseline, 3, 6 and 12 months including bilateral ultrasound examinations of joints/tendons/entheses of hands, elbows, knees, ankles and feet. A new semiquantitative scoring system of 0-3 of elementary lesions (double contour (DC), tophi and aggregates) was applied to quantify the amount of depositions during the follow-up. RESULTS 209 of the patients were evaluated with ultrasound at baseline (mean (SD) age 56.4 (13.8) years and disease duration 7.9 (7.7) years, 95.2% men). The serum urate levels decreased from baseline to 12 months (mean (SD) 500 (77) to 312 (49) µmol/L) (p<0.001)). The first metatarsophalangeal joint was the most frequent location for all the elementary lesions and erosions were associated with higher levels of crystal depositions. From baseline to 12 months, mean sum scores decreased for DC (4.3 to 1.3), tophi (6.5 to 3.8) and aggregates (9.3 to 6.7) (p<0.001 for all), with DC being most sensitive to change. CONCLUSIONS The ultrasound scoring system for crystal depositions was sensitive to change and showed that a treat-to-target approach with ULT resulted in significant reductions of all the depositions, most extensively for DC.
Collapse
Affiliation(s)
- Hilde Berner Hammer
- Department of Rheumatology, Diakonhjemmet Sykehus, Oslo, Norway .,University of Oslo, Faculty of Medicine, Oslo, Norway
| | | | - Lene Terslev
- Department of Rheumatology, Glostrup University Hospital, Copenhagen, Denmark
| | | | - Tore K Kvien
- Department of Rheumatology, Diakonhjemmet Sykehus, Oslo, Norway.,University of Oslo, Faculty of Medicine, Oslo, Norway
| | - Till Uhlig
- Department of Rheumatology, Diakonhjemmet Sykehus, Oslo, Norway.,University of Oslo, Faculty of Medicine, Oslo, Norway
| |
Collapse
|
41
|
Carotti M, Salaffi F, Filippucci E, Aringhieri G, Bruno F, Giovine S, Gentili F, Floridi C, Borgheresi A, De Filippo M, Masciocchi C, Barile A, Giovagnoni A. Clinical utility of Dual Energy Computed Tomography in gout: current concepts and applications. ACTA BIO-MEDICA : ATENEI PARMENSIS 2020; 91:116-124. [PMID: 32945286 PMCID: PMC7944678 DOI: 10.23750/abm.v91i8-s.9942] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Accepted: 06/12/2020] [Indexed: 12/17/2022]
Abstract
Gout is the most common inflammatory arthritis and is increasing in prevalence and incidence in many countries worldwide. Dual Energy Computed Tomography (DECT) has a high diagnostic accuracy in established gout, but its diagnostic sensitivity is low in subjects with recent-onset gout. A meta-analysis of 17 studies showed a pooled sensitivity and specificity of 0.85 and 0.88, respectively. DECT is a useful diagnostic tool for patients with contraindications for joint aspiration or for those who refuse joint aspiration. This article aims to give an up to date review and summary of existing literature on the role and accuracy of DECT in the imaging of gout. (www.actabiomedica.it)
Collapse
Affiliation(s)
- Marina Carotti
- Department of Radiology - Division of Special and Pediatric Radiology, University Hospital "Umberto I - Lancisi -Salesi"- Universiy Politecnica Marche - Via Conca 71, 60126 Ancona, AN, Italy. .
| | - Fausto Salaffi
- Rheumatological Clinic, Department of Molecular and Clinical Sciences, University Politecnica Marche - Ancona, Italy.
| | - Emilio Filippucci
- Rheumatological Clinic, Department of Molecular and Clinical Sciences, University Politecnica Marche - Ancona, Italy.
| | - Giacomo Aringhieri
- Radiologia Diagnostica ed Interventistica, Dipartimento di ricercar Traslazionale e Nuove Tecnologie in Medicina e Chirurgia, Università di Pisa, Pisa, Italy.
| | - Federico Bruno
- Department of Biotechnology and Applied Clinical Science, University of L'Aquila, L'Aquila, Italy.
| | - Sabrina Giovine
- Department of Radiology, SG Moscati Hospital, ASL Caserta, Aversa, Caserta, Italy.
| | - Francesco Gentili
- Department of Medicine and Surgery (DiMec), Section of Radiology, University of Parma, Maggiore Hospital, Parma, Italy.
| | - Chiara Floridi
- University Politecnica delle Marche, Department of Clinical Special and Dental Sciences, Ancona, Italy.
| | - Alessandra Borgheresi
- Department of Radiology - Division of Special and Pediatric Radiology, University Hospital "Umberto I - Lancisi -Salesi"- University Politecnica Marche - Ancona, Italy.
| | - Massimo De Filippo
- Department of Medicine and Surgery (DiMec), Section of Radiology, University of Parma, Maggiore Hospital, Parma, Italy.
| | - Carlo Masciocchi
- Department of Biotechnology and Applied Clinical Science, University of L'Aquila, L'Aquila, Italy.
| | - Antonio Barile
- Department of Applied Clinical Science and Biotechnology, University of L'Aquila, L'Aquila, Italy.
| | - Andrea Giovagnoni
- Department of Radiology - Division of Special and Pediatric Radiology, University Hospital "Umberto I - Lancisi -Salesi"- University Politecnica Marche - Ancona, Italy.
| |
Collapse
|
42
|
Ramon A, Ornetti P. Dual energy computed tomography: A breakthrough for gout? Joint Bone Spine 2020; 87:289-291. [DOI: 10.1016/j.jbspin.2019.12.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/24/2019] [Indexed: 12/27/2022]
|
43
|
Chen X, Xu G, Hu Q, Zhao T, Bi Q, Huang Y, Shao H, Zhang J. Percutaneous transforaminal endoscopic decompression for the treatment of intraspinal tophaceous gout: A case report. Medicine (Baltimore) 2020; 99:e20125. [PMID: 32481280 PMCID: PMC7249926 DOI: 10.1097/md.0000000000020125] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
RATIONALE Intraspinal tophaceous gout is relatively rare condition presenting with major clinical manifestations, such as spinal cord or nerve roots compressions (radiculopathy). It is usually difficult to differentiate intraspinal tophaceous gout, lumbar disc herniation, stenosis of spinal canal, ossification of ligamentum flavum, and other degenerative spinal disorders from each other. PATIENT CONCERNS A 64-year-old man was admitted with a history of progressive low back pain for 11 months. He also presented with radiculopathy and numbness of his left lower extremity. DIAGNOSES Preoperative computed tomography (CT) and magnetic resonance imaging (MRI) showed L4/5 disc herniation and lateral recess stenosis on the left side. During the operation of percutaneous transforaminal endoscopic decompression, intraspinal chalky white material was seen. Post-operative pathologic results confirmed the diagnosis of gouty tophi. INTERVENTIONS Percutaneous transforaminal endoscopic decompression was performed as treatment. Intraspinal chalky white material was seen. We removed most of the chalky white material and extruded nucleus. OUTCOMES His symptom subsided rapidly and no deterioration was noted 1 year post-operatively. LESSONS Although intraspinal tophaceous gout is not commonly seen, clinicians should take it into consideration as a possible differential diagnosis when the patient exhibits axial pain or neurological deficits with risk factors of gout. We identified and treated this case with percutaneous transforaminal endoscopic decompression for the first time and got an excellent outcome. Percutaneous transforaminal endoscopic surgery proved to be an effective and minimally invasive alternative for identifying and treating intraspinal tophaceous gout.
Collapse
Affiliation(s)
- Xinji Chen
- Department of Orthopedics, Zhejiang Provincial People's Hospital
- Hangzhou Medical College People's Hospital, Hangzhou
- School of Clinical Medicine, Wenzhou Medical College, Wenzhou, Zhejiang
| | - Guokang Xu
- Department of Orthopedics, Fuyang First People's Hospital
| | - Qingfeng Hu
- Department of Orthopedics, The Affiliated Guang-Xing Hospital of Zhejiang TCM University, Hangzhou, Zhejiang
| | - Tingxiao Zhao
- Department of Orthopedics, Zhejiang Provincial People's Hospital
- Hangzhou Medical College People's Hospital, Hangzhou
- Bengbu Medical College, Bengbu, Anhui, China
| | - Qing Bi
- Department of Orthopedics, Zhejiang Provincial People's Hospital
- Hangzhou Medical College People's Hospital, Hangzhou
| | - Yazeng Huang
- Department of Orthopedics, Zhejiang Provincial People's Hospital
- Hangzhou Medical College People's Hospital, Hangzhou
| | - Haiyu Shao
- Department of Orthopedics, Zhejiang Provincial People's Hospital
- Hangzhou Medical College People's Hospital, Hangzhou
| | - Jun Zhang
- Department of Orthopedics, Zhejiang Provincial People's Hospital
- Hangzhou Medical College People's Hospital, Hangzhou
| |
Collapse
|
44
|
Dual-energy CT in the differentiation of crystal depositions of the wrist: does it have added value? Skeletal Radiol 2020; 49:707-713. [PMID: 31802167 DOI: 10.1007/s00256-019-03343-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Revised: 11/06/2019] [Accepted: 11/07/2019] [Indexed: 02/02/2023]
Abstract
OBJECTIVES To evaluate the ability of dual-energy computed tomography (DECT) to improve diagnostic discrimination between gout and other crystal arthropathies such as calcium pyrophosphate deposition disease (CPPD) of the wrist in a clinical patient population. MATERIALS AND METHODS This retrospective case-control study included 29 patients with either gout (case group; n = 9) or CPPD (control group; n = 20) who underwent DECT of the wrist for clinically suspected crystal arthropathy. Color-coded urate and enhanced calcium as well as virtual 120 kVe blended images were reconstructed from the DECT datasets. Two independent and blinded readers evaluated each reconstructed dataset for the presence of depositions in 17 predefined regions. Additionally, a global diagnosis was made first for 120 kVe images only, based solely on morphologic criteria, and subsequently for all reconstructed images. RESULTS Sensitivity for the global diagnosis of gout was 1.0 (95% CI 0.63-1) for both DECT and 120 kVe images with specificities of 0.70 (95% CI 0.46-0.87) for DECT and 0.80 (95% CI 0.56-0.93) for 120 kVe images. Color-coded DECT images did not detect more depositions than monochrome standard CT images. CONCLUSION Discrimination of crystal arthropathies of the wrist is limited using DECT and primarily relying on color-coded images. Evaluation of morphologic criteria on standard CT images is essential for accurate diagnosis.
Collapse
|
45
|
Zhang B, Yang M, Wang H. Diagnostic value of ultrasound versus dual-energy computed tomography in patients with different stages of acute gouty arthritis. Clin Rheumatol 2020; 39:1649-1653. [PMID: 32157468 DOI: 10.1007/s10067-020-05014-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Revised: 02/19/2020] [Accepted: 02/28/2020] [Indexed: 11/30/2022]
Abstract
OBJECTIVE Previous studies of the diagnostic accuracy of ultrasound (US) and dual-energy computed tomography (DECT) in patients with gout have reported different results. The aim of this study is to compare the diagnostic value of US and DECT in patients with different stages of acute gouty arthritis. METHODS Based on the presence of monosodium urate (MSU) crystals in the synovial fluid, patients (n = 37) were divided into three groups according to gout duration: early stage (within 1 year, n = 15), middle stage (1 to 3 years, n = 12), and late stage (more than 3 years, n = 10). All the affected joints were examined by US and DECT. RESULTS In the early-stage group, the sensitivity of US was significantly higher than DECT in identifying MSU deposition (66.7% vs 26.6%, p < 0.05), while in the middle- and late-stage groups, the sensitivity of US and DECT was similar. In the early-stage group, the US results in nine joints were positive (four with double contour sign, four with snowstorm sign, and one with both double contour sign and snowstorm sign), while DECT did not show any urate crystal deposits. CONCLUSION These findings indicate that US should be the first choice for acute gouty arthritis, especially in patients with early-stage disease.Key Points• Previous studies have compared DECT with US to evaluate the reliability of each method in diagnosing gout but have reported different results, which may be partly due to different gout duration.• In our study, the sensitivity of US was significantly higher than DECT in identifying MSU deposition in the early-stage group, while in the middle- and late-stage groups, the sensitivity of US and DECT was similar.• US should be the first choice for the diagnosis of acute gouty arthritis, especially in patients with early-stage disease.
Collapse
Affiliation(s)
- Bin Zhang
- Department of Rheumatology, Affiliated Hospital of Jiaxing University, The First Hospital of Jiaxing, Jiaxing, 314000, Zhejiang, China
| | - Mingfeng Yang
- Department of Rheumatology, Affiliated Hospital of Jiaxing University, The First Hospital of Jiaxing, Jiaxing, 314000, Zhejiang, China
| | - Hongzhi Wang
- Department of Rheumatology, Affiliated Hospital of Jiaxing University, The First Hospital of Jiaxing, Jiaxing, 314000, Zhejiang, China.
| |
Collapse
|
46
|
|
47
|
Cicero G, Ascenti G, Albrecht MH, Blandino A, Cavallaro M, D'Angelo T, Carerj ML, Vogl TJ, Mazziotti S. Extra-abdominal dual-energy CT applications: a comprehensive overview. Radiol Med 2020; 125:384-397. [PMID: 31925704 DOI: 10.1007/s11547-019-01126-5] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Accepted: 12/27/2019] [Indexed: 12/12/2022]
Abstract
Unlike conventional computed tomography, dual-energy computed tomography is a relatively novel technique that exploits ionizing radiations at different energy levels. The separate radiation sets can be achieved through different technologies, such as dual source, dual layers or rapid switching voltage. Body tissue molecules vary for their specific atomic numbers and electron density, and the interaction with different sets of radiations results in different attenuations, allowing to their final distinction. In particular, iodine recognition and quantification have led to important information about intravenous contrast medium delivery within the body. Over the years, useful post-processing algorithms have also been validated for improving tissue characterization. For instance, contrast resolution improvement and metal artifact reduction can be obtained through virtual monoenergetic images, dose reduction by virtual non-contrast reconstructions and iodine distribution highlighting through iodine overlay maps. Beyond the evaluation of the abdominal organs, dual-energy computed tomography has also been successfully employed in other anatomical districts. Although lung perfusion is one of the most investigated, this evaluation has been extended to narrowly fields of application, such as musculoskeletal, head and neck, vascular and cardiac. The potential pool of information provided by dual-energy technology is already wide and not completely explored, yet. Therefore, its performance continues to raise increasing interest from both radiologists and clinicians.
Collapse
Affiliation(s)
- Giuseppe Cicero
- Section of Radiological Sciences, Department of Biomedical Sciences and Morphological and Functional Imaging, University of Messina, Policlinico "G. Martino" Via Consolare Valeria 1, 98100, Messina, Italy.
| | - Giorgio Ascenti
- Section of Radiological Sciences, Department of Biomedical Sciences and Morphological and Functional Imaging, University of Messina, Policlinico "G. Martino" Via Consolare Valeria 1, 98100, Messina, Italy
| | - Moritz H Albrecht
- Department of Diagnostic and Interventional Radiology, University Hospital Frankfurt, Theodor-Stern-Kai 7, 60590, Frankfurt am Main, Germany
| | - Alfredo Blandino
- Section of Radiological Sciences, Department of Biomedical Sciences and Morphological and Functional Imaging, University of Messina, Policlinico "G. Martino" Via Consolare Valeria 1, 98100, Messina, Italy
| | - Marco Cavallaro
- Section of Radiological Sciences, Department of Biomedical Sciences and Morphological and Functional Imaging, University of Messina, Policlinico "G. Martino" Via Consolare Valeria 1, 98100, Messina, Italy.,Department of Diagnostic and Interventional Radiology, University Hospital Frankfurt, Theodor-Stern-Kai 7, 60590, Frankfurt am Main, Germany
| | - Tommaso D'Angelo
- Section of Radiological Sciences, Department of Biomedical Sciences and Morphological and Functional Imaging, University of Messina, Policlinico "G. Martino" Via Consolare Valeria 1, 98100, Messina, Italy
| | - Maria Ludovica Carerj
- Section of Radiological Sciences, Department of Biomedical Sciences and Morphological and Functional Imaging, University of Messina, Policlinico "G. Martino" Via Consolare Valeria 1, 98100, Messina, Italy
| | - Thomas J Vogl
- Department of Diagnostic and Interventional Radiology, University Hospital Frankfurt, Theodor-Stern-Kai 7, 60590, Frankfurt am Main, Germany
| | - Silvio Mazziotti
- Section of Radiological Sciences, Department of Biomedical Sciences and Morphological and Functional Imaging, University of Messina, Policlinico "G. Martino" Via Consolare Valeria 1, 98100, Messina, Italy
| |
Collapse
|
48
|
Liu Y, Li X, Jiao G, Zhou P, Li Z. Multilevel Lumbar Stenosis Caused by Large Tophi Involving Both Spinal Canal and Posterior Spinal Elements: A Rare Case Report and Literature Review. J Med Cases 2019; 10:333-337. [PMID: 34434303 PMCID: PMC8383701 DOI: 10.14740/jmc3392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Accepted: 11/20/2019] [Indexed: 11/27/2022] Open
Abstract
Tophus is a characteristic manifestation of gout entering the chronic phase, which usually deposits in the joints of the extremities, skin mucosa, etc. A gout tophus that involves the spine causing spinal stenosis is rare and it can be misdiagnosed as a spinal tumor preoperatively. We report the case of a 35-year-old man who presented with lumbar stenosis symptoms, and suffered multiple-site gout tophi involvement throughout his body. Radiographic examinations showed that the large tophi infiltrated the posterior elements of the spine and encroached the lumbar spinal canal, resulting in neurologic compression from the second to the fifth lumbar level. Urate could be observed on a dual-energy computed tomography. A posterior-based procedure was performed to eradicate the tophi and stabilize the spine. Finally, urate crystal was confirmed by postoperative pathological examination. Here, the clinical manifestations, radiological, pathological and surgical features for this case are reported.
Collapse
Affiliation(s)
- Yang Liu
- Department of Spinal Surgery, The First Affiliated Hospital of Jinan University, Guangzhou City, Guangdong Province, China
| | - Xueshi Li
- Department of Spinal Surgery, The First Affiliated Hospital of Jinan University, Guangzhou City, Guangdong Province, China
| | - Genlong Jiao
- Department of Spinal Surgery, The First Affiliated Hospital of Jinan University, Guangzhou City, Guangdong Province, China
| | - Pan Zhou
- Department of Spinal Surgery, The First Affiliated Hospital of Jinan University, Guangzhou City, Guangdong Province, China
| | - Zhizhong Li
- Department of Spinal Surgery, The First Affiliated Hospital of Jinan University, Guangzhou City, Guangdong Province, China
| |
Collapse
|
49
|
Pascart T, Lioté F. Gout: state of the art after a decade of developments. Rheumatology (Oxford) 2019; 58:27-44. [PMID: 29547895 DOI: 10.1093/rheumatology/key002] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2017] [Indexed: 02/06/2023] Open
Abstract
This review article summarizes the relevant English literature on gout from 2010 through April 2017. It emphasizes that the current epidemiology of gout indicates a rising prevalence worldwide, not only in Western countries but also in Southeast Asia, in close relationship with the obesity and metabolic syndrome epidemics. New pathogenic mechanisms of chronic hyperuricaemia focus on the gut (microbiota, ABCG2 expression) after the kidney. Cardiovascular and renal comorbidities are the key points to consider in terms of management. New imaging tools are available, including US with key features and dual-energy CT rendering it able to reveal deposits of urate crystals. These deposits are now included in new diagnostic and classification criteria. Overall, half of the patients with gout are readily treated with allopurinol, the recommended xanthine oxidase inhibitor (XOI), with prophylaxis for flares with low-dose daily colchicine. The main management issues are related to patient adherence, because gout patients have the lowest rate of medication possession ratio at 1 year, but they also include clinical inertia by physicians, meaning XOI dosage is not titrated according to regular serum uric acid level measurements for targeting serum uric acid levels for uncomplicated (6.0 mg/dl) and complicated gout, or the British Society for Rheumatology recommended target (5.0 mg/dl). Difficult-to-treat gout encompasses polyarticular flares, and mostly patients with comorbidities, renal or heart failure, leading to contraindications or side effects of standard-of-care drugs (colchicine, NSAIDs, oral steroids) for flares; and tophaceous and/or destructive arthropathies, leading to switching between XOIs (febuxostat) or to combining XOI and uricosurics.
Collapse
Affiliation(s)
- Tristan Pascart
- EA 4490, Lille University, Lille, France.,Service de Rhumatologie, Hôpital Saint-Philibert, Lomme, France
| | - Frédéric Lioté
- UFR de Médecine, University of Paris Diderot, USPC, France.,INSERM, UMR 1132 Bioscar (Centre Viggo Petersen), France.,Service de Rhumatologie (Centre Viggo Petersen), Pôle Appareil Locomoteur, Hôpital Lariboisière (AP-HP), Paris, France
| |
Collapse
|
50
|
Impact of Dual-Energy CT Postprocessing Protocol for the Detection of Gouty Arthritis and Quantification of Tophi in Patients Presenting With Podagra: Comparison With Ultrasound. AJR Am J Roentgenol 2019; 213:1315-1323. [PMID: 31553656 DOI: 10.2214/ajr.19.21404] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
OBJECTIVE. The objective of our study was to compare ultrasound (US) tophus and monosodium urate (MSU) deposit detection and US tophus size in the metatarsophalangeal (MTP) 1 joint with dual-energy CT (DECT) using two DECT postprocessing protocols in patients presenting with podagra. SUBJECTS AND METHODS. Seventy-five consecutive patients with podagra (66 men and nine women; mean age, 65.6 years; age range, 33-88 years) and 75 control subjects with MTP 1 joint osteoarthritis (49 men and 26 women; mean age, 63.0 years; age range, 35-87 years) prospectively underwent US and DECT between 2016 and 2018 to assess the MTP 1 joint. Two Syngovia postprocessing DECT protocols with different minimum attenuation thresholds of 150 HU (DECT 150 protocol) versus 120 HU (DECT 120 protocol) and the same maximum attenuation threshold (500 HU) and constant kilovoltage setting of tubes A and B at 80 and 140 kVp were evaluated. Interobserver variability of the two DECT protocols was calculated and compared with that of US. RESULTS. The postprocessing DECT 150 protocol was positive for tophus detection in 55 of 75 patients (73.3%) with podagra, whereas the postprocessing DECT 120 protocol detected MSU deposits in all 75 patients (100%). Tophus size assessed using the DECT 120 protocol showed an improved correlation with tophus size detected on US (p < 0.01). Interobserver variability of DECT was improved when using the DECT 120 protocol (p < 0.01). CONCLUSION. The postprocessing DECT 120 protocol enables improved visualization of MSU deposits and provides more accurate information about tophus size that better correlates with tophus size on US compared with the standard postprocessing DECT 150 protocol.
Collapse
|