Non tumoral muscular MRI: Old pathologies, new techniques

Congress:

ECR 2013

Poster Number:

C-2581

Type:

Educational Exhibit

Keywords:

Musculoskeletal soft tissue, Musculoskeletal system, MR, MR-Diffusion/Perfusion, Imaging sequences, Diagnostic procedure, Inflammation, Trauma

Authors:

A. Alvarez Vazquez¹, L. Herraiz Hidalgo¹, J. Carrascoso Arranz², C. Hayoun¹, A. Fernández¹, V. Martinez de Vega¹; ¹Madrid/ES, ²POZUELO MADRID, Madrid/ES

DOI:

10.1594/ecr2013/C-2581

DOI-Link:

https://dx.doi.org/10.1594/ecr2013/C-2581

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Learning objectives

•To illustrate the utility of MRI to evaluate non tumoral muscular pathology. •To describe the most frequent patterns of muscular signal alteration, showing a recompilation of diverse cases including rare ones. •To outline the differential diagnosis and possible pitfalls in the muscular pathology. •To show new techniques useful to evaluate muscular lesions and its evolution.

Background

Magnetic resonance imaging (MRI) has an important role in detection and characterization of changes in muscular signal caused by different pathologic conditions. MRI allows an optimal evaluation of anatomical detail and muscles morphology. T1 weighted images (T1WI) are the best suited for the evaluation of anatomy and also provide presence of subacute haemorrhage and muscle atrophy. T2 weighted images (T2WI) are indispensable to detect edema and therefore pathology. Contrast-enhanced T1WI are useful to differ solid lesions and recognise muscular abscesses. Diffusion weighted images (DWI) help...

Imaging findings OR Procedure details

Due to its ability of multiplanar imaging and greater soft tissue contrast, MRI is the method of choice for evaluating the anatomy and pathology of the muscles. Imaging protocol: all patients were examined with a 1.5T or 3T MRI system Between 2008 and 2012, patients with muscular alteration of diverse causes were explored in our department. In this exhibits, we will report the spectrum of MR findings of non tumoral pathology and we will review many of the potencial causes of muscular signal intensity alteration...

Conclusion

MRI is the best imaging method for caracterize non tumoral muscular signal intensity alteration. A diagnosis of muscular pathology is usually based on clinical, analityc and MRI features. New techniques allow early diagnose, spatial and microfibrillar evaluation, to evaluate secondary complications and to illustrate muscular recovery.

References

1. May DA et al. Abnormal Signal Intensity in Skeletal Muscle at MR Imaging: Patterns, Pearls, and Pitfalls. RadioGraphics 2000; 20:S295–S315 2. Soterios Gyftopoulos, Zehava Sadka Rosenberg, Mark E. Schweitzer and Marcelo Bordalo-Rodrigues. Normal Anatomy and Strains of the Deep Musculotendinous Junction of the Proximal Rectus Femoris: MRI Features AJR March 2008 vol. 190 no. 3 W182-W186 3. Sookur PA et al. Accessory Muscles: Anatomy, Symptoms, and Radiologic Evaluation. RadioGraphics 2008; 28:481–499 4. Delfaut EM et al. Imaging of Foot and Ankle Nerve Entrapment Syndromes:...