Non-invasive determination of cartilage thickness throughout joint surfaces using magnetic resonance imaging

Determination of liver iron concentration by magnetic resonance imaging (MRI) is becoming the new technique of choice for the diagnosis of iron overload in hereditary haemochromatosis and other liver iron surcharge diseases. Determination of hepatic iron concentration obtained by liver biopsy has been the gold standard for years. The development of MRI techniques, via signal intensity ratio methods or relaxometry, has provided a non-invasive and more accurate approach to the diagnosis of liver iron overload. This article reviews the available MRI methods for the determination of liver iron concentration and also evaluates the technique for the diagnosis and quantification of iron overload in different clinical practice scenarios.

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Safety and Practicality of Magnetic Resonance Imaging (MRI) for Non-invasive Assessment of Coronary Stents

Journal of the American College of Cardiology ◽

10.1016/s0735-1097(97)85365-x ◽

1998 ◽

Vol 31 (2) ◽

pp. 382A

Author(s):

S Rosario

Keyword(s):

Magnetic Resonance Imaging ◽

Magnetic Resonance ◽

Coronary Stents ◽

Resonance Imaging ◽

Non Invasive ◽

Magnetic Resonance Imaging Mri

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Evaluation of Cartilage in the Wrist using Magnetic Resonance Imaging

Current Rheumatology Reviews ◽

10.2174/1573397115666190819153912 ◽

2020 ◽

Vol 16 (3) ◽

pp. 170-177

Author(s):

Wesley N. Sivak ◽

Joseph E. Imbriglia

Keyword(s):

Magnetic Resonance Imaging ◽

Magnetic Resonance ◽

Wrist Arthroscopy ◽

Resonance Imaging ◽

Joint Surfaces ◽

Articular Cartilage Surface ◽

Small Joint ◽

Magnetic Resonance Imaging Mri ◽

Clinical Conditions ◽

Accurate Imaging

Wrist pain is a common patient complaint with a myriad of clinical conditions that can explain the underlying cause. Short of wrist arthroscopy, no technique other than formal wrist arthrotomy exists for direct examination of the hyaline cartilage coating the articular surfaces of the carpal bones. Magnetic resonance imaging (MRI) has been proven accurate in evaluating joint surfaces of large joints such as the shoulder, hip, and knee with articular cartilage surface thickness is in excess of 1 mm. However, in the carpus the thickness of the cartilage and the contours present have precluded accurate imaging. Advances in MRI technology over the last several decades are now making imaging of small joint surfaces, such as the carpus, an area worth revisiting. Herein we provide a review of these efforts with a specific focus on the evaluation of the wrist.

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Non-invasive diagnostics in fossils - Magnetic Resonance Imaging of pathological belemnites

Biogeosciences ◽

10.5194/bg-2-133-2005 ◽

2005 ◽

Vol 2 (2) ◽

pp. 133-140 ◽

Cited By ~ 18

Author(s):

D. Mietchen ◽

H. Keupp ◽

B. Manz ◽

F. Volke

Keyword(s):

Magnetic Resonance Imaging ◽

Magnetic Resonance ◽

Soft Tissue ◽

Clinical Diagnostics ◽

Resonance Imaging ◽

Non Invasive ◽

Physiological Processes ◽

Magnetic Resonance Imaging Mri ◽

Invasive Diagnostics

Abstract. For more than a decade, Magnetic Resonance Imaging (MRI) has been routinely employed in clinical diagnostics because it allows non-invasive studies of anatomical structures and physiological processes in vivo and to differentiate between healthy and pathological states, particularly of soft tissue. Here, we demonstrate that MRI can likewise be applied to fossilized biological samples and help in elucidating paleopathological and paleoecological questions: Five anomalous guards of Jurassic and Cretaceous belemnites are presented along with putative paleopathological diagnoses directly derived from 3D MR images with microscopic resolution. Syn vivo deformities of both the mineralized internal rostrum and the surrounding former soft tissue can be traced back in part to traumatic events of predator-prey-interactions, and partly to parasitism. Besides, evidence is presented that the frequently observed anomalous apical collar might be indicative of an inflammatory disease. These findings highlight the potential of Magnetic Resonance techniques for further paleontological applications.

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