AJR. American journal of roentgenology
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AJR Am J Roentgenol · Mar 2014
Evaluation of tentorial length and angle in sleep-wake disturbances after mild traumatic brain injury.
The purpose of this study was to determine if there is an association between tentorial length and angle and sleep-wake disturbances in patients with mild traumatic brain injury (TBI). ⋯ Among patients with mild TBI with similar cognitive function and symptom severity, those with sleep-wake disturbances have significantly longer tentorial length with a flatter angle than do patients with mild TBI without sleep symptoms, with length of time to recovery being directly correlated with tentorial length and indirectly correlated with tentorial angle. Direct impact between the tentorium and the pineal gland during mild TBI may lead to pineal gland injury, disruption of melatonin homeostasis, and sleep-wake disturbances.
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AJR Am J Roentgenol · Mar 2014
Diffusion-tensor MRI at 3 T: differentiation of central gland prostate cancer from benign prostatic hyperplasia.
The purpose of this article is to retrospectively evaluate the utility of diffusion-tensor imaging (DTI) at 3 T in differentiating central gland prostate cancer from benign prostatic hyperplasia (BPH). ⋯ DTI at 3 T is useful for distinguishing central gland cancers from BPH foci, with significantly different ADC and FA values. Furthermore, ADC showed greater diagnostic accuracy than FA in differentiating central gland cancers from stromal and glandular hyperplasia foci.