Topics in magnetic resonance imaging : TMRI
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Top Magn Reson Imaging · Jun 2007
ReviewWhole-body magnetic resonance imaging and positron emission tomography-computed tomography in oncology.
The advent of positron emission tomography-computed tomography (PET-CT) and whole-body magnetic resonance imaging (WB-MRI) has introduced tumor imaging with a systemic and functional approach compared with established sequential, multimodal diagnostic algorithms. Whole-body PET with [18F]-fluoro-2-desoxy-glucose is a useful imaging procedure for tumor staging and monitoring that can visualize active tumor tissue by detecting pathological glucose metabolism. The combination of PET with the detailed anatomical information of multislice computed tomography as dual-modality scanners has markedly increased lesion localization and diagnostic accuracy compared with both modalities as standalone applications. ⋯ Whole-body magnetic resonance imaging has shown advantages for the detection of distant metastatic disease, especially from tumors frequently spreading to the liver or brain and as a whole-body bone marrow screening application. Within this context, WB-MRI is highly accurate for the detection of skeletal metastases and staging of multiple myeloma. This article summarizes recent developments of CT/PET-CT and WB-MRI and highlights their performance within the scope of systemic oncological imaging.
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Top Magn Reson Imaging · Jun 2007
ReviewThe role of magnetic resonance imaging in the early diagnosis of rheumatoid arthritis.
Rheumatoid arthritis (RA) is a common disease that affects 1% of the population. With the advent of disease-modifying therapies, it became particularly important to detect RA as early as possible. ⋯ We also review the role of MRI in establishing correct diagnosis in cases of arthritis, which do not demonstrate classical clinical presentation. The role of MRI in the follow-up of RA is addressed.
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Top Magn Reson Imaging · Jun 2007
ReviewMagnetic resonance imaging of appendicular musculoskeletal infection.
Appendicular skeletal infection includes osseous and extraosseous infections. Skeletal infection needs early diagnosis and appropriate management to prevent long-term morbidity. ⋯ This article describes the role of magnetic resonance imaging in relation to the other available imaging modalities in the diagnosis of skeletal infection. Special circumstances such as diabetic foot, postoperative infection, and chronic recurrent multifocal osteomyelitis are discussed separately.
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Diffusion weighted imaging gained attention as an imaging modality, which provides information on the microstructure of a tissue, which can be used for tissue characterization. This is of importance in patients where other diagnostic tools provide equivocal or unspecific information. ⋯ However, with the improvement in scanner technology and the availability of new MR sequences investigation of the Muskulo Skeletal System was made possible. We describe the potential of Diffusion Weighted Imaging as a non-invasive technique to evaluate pathological, inflammatory and physiological processes in osteoradiology.