Diffuse Axonal Injury at Ultra-High Field MRI

Diffuse Axonal Injury at Ultra-High Field MRI

OBJECTIVE Diffuse axonal injury (DAI) is a specific type of traumatic brain injury caused by shearing forces leading to widespread tearing of axons and small vessels. Traumatic microbleeds (TMBs) are regarded as a radiological marker for DAI. This study aims to compare DAI-associated TMBs at 3 Tesla (T) and 7 T susceptibility weighted imaging (SWI) to evaluate possible diagnostic benefits of ul...

Intracranial diffuse axonal injury at autopsy.

An illustrative case of diffuse axonal injury (DAI) emphasizes features that help to separate focal outer head trauma owing to blows and/or falls from angular acceleration head injuries associated with diffuse inner brain lesions. In the past, explaining significant neurological deficits and death as the result of diffuse closed head trauma received from high-speed automobile accidents has been...

Dielectric Resonance in Ultra High Field MRI

INTRODUCTION Since the start of magnetic resonance imaging, there has been a constant drive towards more powerful magnets and consequently higher operational frequencies. For head imaging, it is expected for the electromagnetic fields to be influenced by the presence of the tissue at these frequencies (field strength AT). As a result, fundamental problems were anticipated regarding the presence...

Ultra-High Field Cardiovascular MRI: Challenges

The realization of the potential advantages of 7T cardiovascular MRI is challenging due to a number of technical and practical issues (1). For example, the clinical application of 7T MRI is limited by safety issues related to stents and other devices. Many patients with ischemic heart disease have undergone previous stent implantation and extensive safety testing is required before these patien...

Brain Phantoms for Ultra High Field MRI