[Craniocerebral trauma : Magnetic resonance imaging of diffuse axonal injury.]

[Craniocerebral trauma : Magnetic resonance imaging of diffuse axonal injury.] Radiologe. 2014 Aug 16; Authors: Mallouhi A Abstract CLINICAL/METHODICAL ISSUE: Acceleration-deceleration rotational brain trauma is a common cause of disability or death in young adults and often leads to a focal destruction of axons. The resulting pathology, axonal shear injury is referred to as diffuse axonal injury (DAI). The DAI-associated lesions occur bilaterally, are widely dispersed and have been observed in the surface and deep white matter. They are found near to and far from the impact site. STANDARD RADIOLOGICAL METHODS: When DAI is clinically suspected, magnetic resonance imaging (MRI) is the method of choice for further clarification, especially in patients where cranial computed tomography (CT) is inconspicuous. METHODICAL INNOVATIONS: To investigate the presence of DAI after traumatic brain injury (TBI), a multimodal MRI approach is applied including the common structural and also functional imaging sequences. PERFORMANCE: For structural MRI, fluid-attenuated inversion recovery (FLAIR) weighted and susceptibility contrast imaging (SWI) are the sequences mainly used. The SWI technique is extremely sensitive to blood breakdown products, which appear as small signal voids at three locations, at the gray-white interface, in the corpus callosum and in the brain stem. Functional MRI comprises a group of constantly develop...
Source: Der Radiologe - Category: Radiology Authors: Tags: Radiologe Source Type: research