Cerebrovascular disease (CVD) is often present in old age and may be associated with microstructural pathology of white matter (WM) and cognitive dysfunction. The current review investigated the relationship between CVD, cognitive status and WM integrity as assessed by diffusion tensor imaging (DTI). Methods DTI studies were searched on ISI and Pubmed databases from 2002 to 2012. Results St...

Abstract Background Reconstruction of the proximal humerus with a locking plate is often first surgical approach for fractures. Screw cut-out common complication and relevant in osteoporotic bone older adults. The Deltoid Tuberosity Index (DTI) an indirect measure assessing local quality failure rate before surgery, providing important information planning. This was independent, large-sample re...

Despite the increasing precision of radiotherapy delivery, it is still frequently associated with neurological complications. This in part due to damage eloquent white matter (WM) tracts, which made more likely by fact they cannot be visualised on standard structural imaging. WM additionally vulnerable than grey radiation damage. Primary brain malignancies also are known spread along WM. Diffus...

Although promising for visualizing the structure of ordered tissues, MR diffusion tensor imaging (DTI) has been hampered by long acquisition time and low spatial resolution associated with its inherently low signal-to-noise ratio (SNR). Moreover, the uncertainty in the DTI measurements has a direct impact on the accuracy of structural renderings such as fiber streamline tracking. Noise removal ...

Este artículo analiza el concepto de destino turístico inteligente (DTI), examinando su relación con la sostenibilidad. En este nivel los destinos turísticos, trabajo indica las principales dimensiones que pueden ayudar a mejorar competitividad (gobernanza, innovación, tecnología, accesibilidad y sostenibilidad). Nuestro se centra principalmente en sostenibilidad,indicando acciones e indicadore...

BACKGROUND Diffusion tensor imaging (DTI) is widely used to assess tissue microstructure non-invasively. Cardiac DTI enables inference of cell and sheetlet orientations, which are altered under pathological conditions. However, DTI is affected by many factors, therefore robust validation is critical. Existing histological validation is intrinsically flawed, since it requires further tissue proc...

The development of accurate, non-invasive methods for mapping white matter fiber-tracts is of critical importance. However, fiber-tracking is typically performed on diffusion tensor imaging (DTI) data obtained with echo-planar-based imaging techniques (EPI), which suffer from susceptibility-related image artifacts, and image warping due to eddy-currents. Thus, a number of white matter fiber-bun...

Department of Neurosurgery, Hospital Garcia de Orta, Almada, Portugal Recently, DKI-based tractography has been developed, showing improved crossing-fiber resolution in comparison to deterministic DTI-based tractography in healthy subjects. In this work, DTI and DKI-based tractography methods were compared regarding the assessment of the corticospinal tract in patients presenting space-occupyin...

BACKGROUND Visualization of the precise course of the visual pathways is relevant to prevent damage that may inflict visual field deficits during neurosurgical resections. In particular the optic radiations (OR) are susceptible to such damage during neurosurgery. Cortical pathways can be mapped in vivo, by using Diffusion Tensor Imaging (DTI). Visualization of these pathways would be potentiall...