Imaging: magnetic resonance imaging

2016 ◽  
Author(s):  
David J. Hunter ◽  
Frank W. Roemer ◽  
Ed Riordan
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Observational Studies ◽  
Joint Space Narrowing ◽  
Conventional Radiography ◽  
Joint Space ◽  
Resonance Imaging ◽  
Future Directions ◽  
Magnetic Resonance Imaging Mri ◽  
Qualitative Measurements

Magnetic resonance imaging (MRI) overcomes many of the limitations associated with conventional radiography, the technique historically regarded as the gold standard in imaging of osteoarthritis (OA). MRI allows visualization of changes and pathologies in joint tissues including cartilage and the menisci, the two tissue components responsible for the indirect radiographic marker of joint space narrowing, decreasing the length of time that must elapse before disease progression can be detected. Other elements of the joint can also be analysed simultaneously: a key development in the understanding of OA. This chapter focuses on the utility of MRI in observational studies and clinical trials, detailing the available MRI techniques and quantitative/qualitative measurements, and their correlation with tissue damage. The possible future directions of MRI in OA are also discussed, with a view to its potential utility in identifying disease-modifying interventions.

Hand Joint Space Narrowing and Osteophytes Are Associated with Magnetic Resonance Imaging-defined Knee Cartilage Thickness and Radiographic Knee Osteoarthritis: Data from the Osteoarthritis Initiative

2011 ◽  
Vol 39 (1) ◽  
pp. 161-166 ◽  
Author(s):  
IDA K. HAUGEN ◽  
SEBASTIAN COTOFANA ◽  
MARTIN ENGLUND ◽  
TORE K. KVIEN ◽  
DONATUS DREHER ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Joint Space Narrowing ◽  
Joint Space ◽  
Cartilage Thickness ◽  
Resonance Imaging ◽  
Knee Cartilage ◽  
Knee Oa ◽  
Osteoarthritis Initiative ◽  
Hand Radiographs

Objective.To evaluate whether features of radiographic hand osteoarthritis (OA) are associated with quantitative magnetic resonance imaging (MRI)-defined knee cartilage thickness, radiographic knee OA, and 1-year structural progression.Methods.A total of 765 participants in Osteoarthritis Initiative (OAI; 455 women, mean age 62.5 yrs, SD 9.4) obtained hand radiographs (at baseline), knee radiographs (baseline and Year 1), and knee MRI (baseline and Year 1). Hand radiographs were scored for presence of osteophytes and joint space narrowing (JSN). Knee radiographs were scored according to the Kellgren-Lawrence (KL) scale. Cartilage thickness in the medial and lateral femorotibial compartments was measured quantitatively from coronal FLASHwe images. We examined the cross-sectional and longitudinal associations between features of hand OA (total osteophyte and JSN scores) and knee cartilage thickness, 1-year knee cartilage thinning (above smallest detectable change), presence of knee OA (KL grade ≥ 3), and progression of knee OA (KL change ≥ 1) by linear and logistic regression. Both hand OA features were included in a multivariate model (if p ≤ 0.25) adjusted for age, sex, and body mass index (BMI).Results.Hand JSN was associated with reduced knee cartilage thickness (ß = −0.02, 95% CI −0.03, −0.01) in the medial femorotibial compartment, while hand osteophytes were associated with the presence of radiographic knee OA (OR 1.10, 95% CI 1.03–1.18; multivariate models) with both hand OA features as independent variables adjusted for age, sex, and BMI). Radiographic features of hand OA were not associated with 1-year cartilage thinning or radiographic knee OA progression.Conclusion.Our results support a systemic OA susceptibility and possibly different mechanisms for osteophyte formation and cartilage thinning.

Magnetic Resonance Imaging and Radiographic Assessment of Carpal Depressions in Children with Juvenile Idiopathic Arthritis: Normal Variants or Erosions?

2012 ◽  
Vol 39 (3) ◽  
pp. 645-650 ◽  
Author(s):  
PETER BOAVIDA ◽  
RIKIN HARGUNANI ◽  
CATHERINE M. OWENS ◽  
KAREN ROSENDAHL
Keyword(s):  
Magnetic Resonance Imaging ◽  
Juvenile Idiopathic Arthritis ◽  
Magnetic Resonance ◽  
Bone Marrow Edema ◽  
Joint Space ◽  
Healthy Children ◽  
Resonance Imaging ◽  
Normal Variants ◽  
Vascular Channels ◽  
Magnetic Resonance Imaging Mri

Objective.Magnetic resonance imaging (MRI) is playing an increasingly important role in the diagnosis and followup of juvenile idiopathic arthritis (JIA). Carpal depressions are commonly observed in healthy children and in patients with JIA. The aim of our study was to further characterize these depressions in patients with JIA.Methods.A total of 29 MRI wrist examinations were analyzed. Depressions were classified according to morphology as either tubular or focal. Features including the presence of a vessel related to the depression, evidence of synovitis, bone marrow edema, or loss of joint space on a radiograph taken on the same day were recorded for each depression.Results.A total of 173 depressions were identified in 145 carpal bones. Forty percent were capitate depressions. A third were focal depressions and two-thirds were tubular. About 10% of tubular depressions and 30% of focal depressions were associated with features suggesting true erosions, with the remainder likely to represent vascular channels and normal variants.Conclusion.Radiologists and clinicians should undertake caution when assessing carpal depressions on MRI because the vast majority are likely to represent normal variants.

scholarly journals Comparison of radiography and magnetic resonance imaging in the diagnosis of hand osteoarthritis

2019 ◽  
Vol 57 (1) ◽  
pp. 91-99 ◽  
Author(s):  
D. M. Kudinsky ◽  
A. V. Smirnov ◽  
L. I. Alekseeva
Keyword(s):  
Magnetic Resonance Imaging ◽  
Articular Cartilage ◽  
Magnetic Resonance ◽  
Bone Marrow Edema ◽  
Soft Tissues ◽  
Joint Space ◽  
Hand Osteoarthritis ◽  
Resonance Imaging ◽  
Magnetic Resonance Imaging Mri

The article discusses the possibilities and search for the optimal concept of diagnosis of hand osteoarthritis (OA). The data of numerous studies with focus on the comparison of sensitivity and specificity of the main techniques in this type of pathology – standard radiography and magnetic resonance imaging (MRI) are presented. Determination of the earliest symptoms of OA allows to predict the development of the disease and begin its therapy. The joint space narrowing due to the loss of articular cartilage is the earliest radiological symptom of OA, which is observed in the advanced stage of the disease. MRI, unlike radiography, makes it possible to visualize the articular cartilage, fluid in the joint cavity, bone marrow edema and soft tissues, but it is more expensive and time-consuming method. At present the main difficulty lies in the absence of a standardized system for assessing the MRI hand OA manifestations, as well as insufficient number of investigations in this area.

Update on the OMERACT Magnetic Resonance Imaging Task Force: Research and Future Directions

2013 ◽  
Vol 41 (2) ◽  
pp. 383-385 ◽  
Author(s):  
Philip G. Conaghan ◽  
Fiona M. McQueen ◽  
Paul Bird ◽  
Charles Peterfy ◽  
Espen Haavardsholm ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Task Force ◽  
Joint Space ◽  
Hand Osteoarthritis ◽  
Resonance Imaging ◽  
Good Reliability ◽  
Surrogate Outcome ◽  
Magnetic Resonance Imaging Mri ◽  
Mri Score

Magnetic resonance imaging (MRI) provides an important biomarker across a range of rheumatological diseases. At the Outcome Measures in Rheumatology (OMERACT) 11 meeting, the MRI task force continued its work of developing and improving the use of MRI outcomes for use in clinical trials. The breadth of pathology in the Rheumatoid Arthritis MRI Score has been strengthened with further work on the development of a joint space narrowing score, and a series of exercises presented at OMERACT 11 demonstrated good reliability and construct validity for this assessment. Understanding the importance of residual inflammation after RA treatment remains a major focus of the group’s work. Analyses were presented on defining the level of synovitis (using MRI scores of a single hand) that would predict absence of erosion progression. The development of the OMERACT Hand Osteoarthritis MRI score has continued with substantial work presented on its iterative development, including pathology definition, scaling, and subsequent reliability of the score. Optimizing the role of MRI as a robust biomarker and surrogate outcome remains a priority for this group.

scholarly journals Preliminary Definitions for Sacroiliac Joint Pathologies in the OMERACT Juvenile Idiopathic Arthritis Magnetic Resonance Imaging Score (OMERACT JAMRIS-SIJ)

2019 ◽  
Vol 46 (9) ◽  
pp. 1192-1197 ◽  
Author(s):  
Tarimobo M. Otobo ◽  
Philip G. Conaghan ◽  
Walter P. Maksymowych ◽  
Desiree van der Heijde ◽  
Pamela Weiss ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Juvenile Idiopathic Arthritis ◽  
Magnetic Resonance ◽  
Joint Inflammation ◽  
Joint Space ◽  
Structural Elements ◽  
Resonance Imaging ◽  
Structural Joint ◽  
Ongoing Development ◽  
Magnetic Resonance Imaging Mri

Objective.To develop definitions for the assessment of magnetic resonance imaging (MRI) pathologies of the sacroiliac joints (SIJ) in juvenile idiopathic arthritis.Methods.An Outcome Measures in Rheumatology (OMERACT) consensus-driven methodology consisting of iterative surveys and focus group meetings within an international group of rheumatologists and radiologists.Results.Two domains, inflammation and structural, were identified. Definitions for bone marrow edema, joint space inflammation, capsulitis, and enthesitis were derived for joint inflammation; sclerosis, erosion, fatty lesion, and ankylosis were defined for assessing structural joint changes.Conclusion.Preliminary consensus-driven definitions for inflammation and structural elements have been derived, underpinning the ongoing development of the OMERACT Juvenile Arthritis MRI SIJ scoring system (OMERACT JAMRIS-SIJ).

scholarly journals Value of Magnetic Resonance Imaging for Diagnosis of Dentigerous Cyst

2016 ◽  
Vol 2016 ◽  
pp. 1-6 ◽  
Author(s):  
Antonione Santos Bezerra Pinto ◽  
André Luiz Ferreira Costa ◽  
Neiandro dos Santos Galvão ◽  
Thásia Luiz Dias Ferreira ◽  
Sérgio Lúcio Pereira de Castro Lopes
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Dentigerous Cyst ◽  
Conventional Radiography ◽  
Diagnostic Process ◽  
Odontogenic Cysts ◽  
Resonance Imaging ◽  
Enamel Epithelium ◽  
Mri Scans ◽  
Magnetic Resonance Imaging Mri

Odontogenic cysts have a high prevalence in the dental clinic population, with dentigerous cyst being one of the most frequent ones and whose aetiology involves accumulation of fluid between the reduced enamel epithelium and the crown of an unerupted tooth. In the diagnostic process of these lesions, one should consider complementary imaging exams such as conventional radiography and computed tomography, which are commonly used for providing anatomical information on the tissues compromised by the lesion, but not on the nature of it. Magnetic resonance imaging (MRI) scans are noninvasive modalities which, due to their unique acquisition characteristics, can provide distinct information on the nature of the lesion. This study reports on a case of dentigerous cyst in the mandible of a 9-year-old patient, documented by means of different imaging modalities. MRI played an important role in both diagnosis of the lesion and differential diagnosis between neoplastic lesions presenting similar imagenological behaviour under other techniques of radiography.

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