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MRI (Magnetic Resonance Imaging)

Magnetic resonans imaging (MRI) is an imaging technique used for high quality images of the body's organs and soft parts.

The human body is primarily fat and water. Fat and water have many hydrogen atoms which make the human body approximately 63% hydrogen atoms. Protons in the hydrogen atoms possess a property called spin, which can be thought of as a small magnetic field.

Magnetic resonance imaging is based on the absorption and emission of energy in the radio frequency range of the electromagnetic spectrum and uses the spatial variations in the energy's phase and frequency from the illustrated object. By means of the spectroscopic MR technique it is possible to get chemical microscopic information about the molecules.

Traditional x-ray images show bone tissue, not cartilage tissue. It is often the quality and the quantity of cartilage tissue that decide whether joint preservation or joint compensatory surgery is possible. Therefore, the MR technique gives important information to orthopaedic surgeons.

When performing joint preservation operations such as Ganz osteotomy for the treatment of hip dysplasia, it is advantageous to examine the thickness of the cartilage in the articulated surfaces. This should be done before the operation and in the years following the operation in order to estimate whether the development of osteoarthritis continues.

MRI does not cause radiation impact, which is a great advantage, but because of the magnetic resonance not all patients can go through this examination and orthopaedic surgical osteosyntheses or prosthesis can make up a contra indication for MR.

 
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Contact Inger Buur Mechlenburg for further information.
 
Kalender

Publikationer
Progressive resistance training in patients with hip dysplasia: A feasibility study.
Mortensen L, Schultz J, Elsner A, Jakobsen SS, Søballe K, Jacobsen JS, Kierkegaard S, Dalgas U, Mechlenburg I.
Effects of supervised exercise compared to non-supervised exercise early after total hip replacement on patient-reported function, pain, health-related quality of life and performance-based function - a systematic review and meta-analysis of randomized controlled trials.
Hansen S, Aaboe J, Mechlenburg I, Overgaard S, Mikkelsen LR.
Association between periacetabular osteotomy and hip dysplasia among relatives: a cross-sectional study.
Simonsen PO, Hertz JM, Søballe K, Mechlenburg I.
Ortopædkirurgisk Forskning Aarhus Universitetshospital Tage-Hansens Gade 2 Bygning 9A 8000 Aarhus C Tel: +45 7846 7471
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