3D Printing, Augmented Reality, and Virtual Reality for the Assessment and Management of Kidney and Prostate Cancer: A Systematic Review.

Three-dimensional (3D) printing, augmented reality, and virtual reality technologies have an increasing presence in the management of prostate and kidney cancer. To assess the utility of 3D printing, augmented reality, and virtual reality for (1) quantitative outcomes, (2) surgical planning, (3) intraoperative guidance, (4) training and simulation, and (5) patient education for patients with kidney and prostate cancer a systematic literature review was performed. Existing evidence demonstrates improvement in clinical outcomes, surgical planning and intra-operative guidance, as well as training. Future studies are needed to assess the impact of 3D technologies on long-term patient-related outcomes.

Spatial Mechanisms within the Dorsal Visual Pathway Contribute to the Configural Processing of Faces.

Human face recognition is often attributed to configural processing; namely, processing the spatial relationships among the features of a face. If configural processing depends on fine-grained spatial information, do visuospatial mechanisms within the dorsal visual pathway contribute to this process? We explored this question in human adults using functional magnetic resonance imaging and transcranial magnetic stimulation (TMS) in a same-different face detection task. Within localized, spatial-processing regions of the posterior parietal cortex, configural face differences led to significantly stronger activation compared to featural face differences, and the magnitude of this activation correlated with behavioral performance. In addition, detection of configural relative to featural face differences led to significantly stronger functional connectivity between the right FFA and the spatial processing regions of the dorsal stream, whereas detection of featural relative to configural face differences led to stronger functional connectivity between the right FFA and left FFA. Critically, TMS centered on these parietal regions impaired performance on configural but not featural face difference detections. We conclude that spatial mechanisms within the dorsal visual pathway contribute to the configural processing of facial features and, more broadly, that the dorsal stream may contribute to the veridical perception of faces.

Results of early cranial decompression as an initial approach for damage control therapy in severe traumatic brain injury in a hospital with limited resources.

INTRODUCTION: Severe traumatic brain injury (sTBI) is a disease that generates significant mortality and disability in Latin America, and specifically in Colombia. The purpose of this study was to evaluate the 12-month clinical outcome in patients with sTBI managed with an early cranial decompression (ECD) as the main procedure for damage control (DC) therapy, performed in a University Hospital in Colombia over a 4-year period. MATERIALS AND METHODS: A database of 106 patients who received the ECD procedure, and were managed according to the strategy for DC in neurotrauma, was analyzed. Variables were evaluated, and the patient outcome was determined according to the Glasgow Outcome Score (GOS) at 12 months postinjury. This was used to generate a dichotomous variable with "favorable" (GOS of 4 or 5) or "unfavorable" (GOS of 1-3) outcomes; analysis of variance was performed with the Chi-square, Wilcoxon-Mann-Whitney and Fisher tests. RESULTS: An overall survival rate of 74.6% was observed for the procedure, At 12 months postsurgery, a favorable clinical outcome (GOS 4-5) was found in 70 patients (66.1%), Unfavorable outcomes in patients were associated with the following factors: Closed trauma, an Injury Severity Score >16, obliterated basal cisterns, subdural hematoma as the main injury seen on the admission computed tomography, and nonreactive pupils observed in the emergency department. CONCLUSION: Twelve months outcome of patients with sTBI managed with ECD in a neuromonitoring limited resource University Hospital in Colombia shows an important survival rate with favorable clinical outcome measure with GOS.

Common Dorsal Stream Substrates for the Mapping of Surface Texture to Object Parts and Visual Spatial Processing.

Everyday objects are often composed of multiple parts, each with a unique surface texture. The neural substrates mediating the integration of surface features on different object parts are not fully understood, and potential contributions by both the ventral and dorsal visual pathways are possible. To explore these substrates, we collected fMRI data while human participants performed a difference detection task on two objects with textured parts. The objects could either differ in the assignment of the same texture to different object parts ("texture-location") or the types of texture ("texture-type"). In the ventral stream, comparable BOLD activation levels were observed in response to texture-location and texture-type differences. In contrast, in a priori localized spatial processing regions of the dorsal stream, activation was greater for texture-location than texture-type differences, and the magnitude of the activation correlated with behavioral performance. We confirmed the reliance of surface texture to object part mapping on spatial processing mechanisms in subsequent psychophysical experiments, in which participants detected a difference in the spatial distance of an object relative to a reference line. In this task, distracter objects occasionally appeared, which differed in either texture-location or texture-type. Distracter texture-location differences slowed detection of spatial distance differences, but texture-type differences did not. More importantly, the distracter effects were only observed when texture-location differences were presented within whole shapes and not between separated shape parts at distinct spatial locations. We conclude that both the mapping of texture features to object parts and the representation of object spatial position are mediated by common neural substrates within the dorsal visual pathway.