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Radiologia. 2012 Sep;54:38-49. doi: 10.1016/j.rx.2012.06.002. Epub 2012 Sep 14.

[Dynamic magnetic resonance imaging in the diagnosis of tumors and pseudotumors of the musculoskeletal system].

Radiologia

[Article in Spanish]
J M Morales Pérez, A Cano Rodríguez, B Sobrino Guijarro, M Martínez Moya, V M Encinas Tobajas

Affiliations

  1. Servicio de Radiodiagnóstico, Hospital Universitario Virgen del Rocío, Sevilla, España. Electronic address: [email protected].

PMID: 22981140 DOI: 10.1016/j.rx.2012.06.002

Abstract

The greater temporal resolution provided in ultrafast dynamic contrast-enhanced magnetic resonance imaging sequences makes it possible to know the physiological phenomenon of the distribution of the contrast material through a time-signal intensity curve. Analyzing these curves enables us to deduce information relevant to the vascularization and perfusion of tissues, capillary permeability, and the interstitial space in the tumor. A steep curve with early washout in a space-occupying lesion greatly increases the possibility of histological malignancy, although this type of curve is not rare in benign lesions and relatively flat curves are not rare in malignant tumors. Nevertheless, dynamic studies of the uptake of contrast material provide important information for the characterization of neoplasms that, together with the usual signs, can help to differentiate between benign and malignant tumors of adipocyte, chondroid, or neural lineage, clearing up diagnostic uncertainty in certain benign lesions such as osteoid osteoma and ischemic musculoskeletal disease. Furthermore, it enables the accurate determination of the response to chemotherapy, detecting recurrence within the treated tumor early, delimiting more precisely the margins between the tumor and peritumoral edema, and helping in diagnostic planning by determining the most vascularized areas of the tumor, which are more likely to be malignant.

Copyright © 2012 SERAM. Published by Elsevier Espana. All rights reserved.

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