Anisotropic phantom measurements for quality assured use of diffusion tensor imaging in clinical practice.

ConclusionPhantom QA is necessary before using DTI for novel procedures to identify the uncertainties associated with DTI data. It is important to remember that the results are software-dependent and that representation of the tracts may vary between software products. We therefore recommend caution with regard to the application of fiber tracking results intraoperatively when dealing with abnormal fiber tract anatomy. PMID: 23474770 [PubMed - as supplied by publisher]
Source: Acta Radiologica - Category: Radiology Authors: Tags: Acta Radiol Source Type: research

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AbstractPurposeTo assess the diagnostic performance of magnetic resonance imaging (MRI) compared to blood tests and clinical scoring systems for the evaluation of histopathologic severity in patients with primary sclerosing cholangitis (PSC).MaterialsFifty-one patients (M/F 37/14, mean age 41  years) with PSC who underwent MRI and liver histopathology were included in this IRB-approved retrospective study. Two radiologists independently graded the severity of biliary abnormalities on magnetic resonance cholangiopancreatography (MRCP) using a standardized scoring system, parenchymal enha ncement, and diffusion-weighted...
Source: Abdominal Imaging - Category: Radiology Source Type: research
AbstractBackgroundThe core symptoms of autism spectrum disorder (ASD) are widely theorized to result from altered brain connectivity. Diffusion-weighted magnetic resonance imaging (DWI) has been a versatile method for investigating underlying microstructural properties of white matter (WM) in ASD. Despite phenotypic and etiological heterogeneity, DWI studies in majority male samples of older children, adolescents, and adults with ASD have largely reported findings of decreased fractional anisotropy (FA) across several commissural, projection, and association fiber tracts. However, studies in preschool-aged children (i.e.,
Source: Journal of Neurodevelopmental Disorders - Category: Neurology Source Type: research
Publication date: Available online 14 December 2019Source: NeuroImage: ClinicalAuthor(s): Cavaliere Carlo, Aiello Marco, Soddu Andrea, Laureys Steven, NinaL Reislev, Ptito Maurice, Kupers RonAbstractWe investigated the effects of blindness on the structural and functional integrity of the corpus callosum and the anterior commissure (AC), which together form the two major components of the commissural pathways. Twelve congenitally blind (CB), 15 late blind (LB; mean onset of blindness of 16.6 ± 8.9 years), and 15 matched normally sighted controls (SC) participated in a multimodal brain imaging study. Magnetic resonan...
Source: NeuroImage: Clinical - Category: Radiology Source Type: research
Publication date: January 2020Source: Epilepsy &Behavior, Volume 102Author(s): Niels Hansen, Kerstin Schwing, Demet Önder, Guido Widman, Pitshaporn Leelaarporn, Indra Prusseit, Rainer Surges, Nico Melzer, Catharina Gross, Albert J. Becker, Juri-Alexander Witt, Christian E. Elger, Christoph HelmstaedterAbstractPurposeInvestigating immune cells in autoimmune limbic encephalitis (LE) will contribute to our understanding of its pathophysiology and may help to develop appropriate therapies. The aim of the present study was to analyze immune cells to reveal underlying immune signatures in patients with temporal lobe epi...
Source: Epilepsy and Behavior - Category: Neurology Source Type: research
CONCLUSIONS: The use of this novel cartilage restoration surgical technique provides excellent clinical, functional, and MRI-based outcomes in young, active individuals with full-thickness cartilage or osteochondral defects. LEVEL OF EVIDENCE: Level IV-Therapeutic case series. PMID: 31835970 [PubMed - in process]
Source: Journal of Orthopaedic Surgery - Category: Orthopaedics Authors: Tags: J Orthop Surg (Hong Kong) Source Type: research
A 33-year-old male patient attended a surgical service reporting a swelling in the right nasal cavity for around 6 months. Magnetic resonance imaging showed a hypointense image on the upper wall of the right maxillary sinus invading the nasal cavity of the same side. There was a previous biopsy in the same region with an inconclusive diagnosis. The patient was submitted to excisional biopsy, and the surgical specimen was referred for a pathologic service with clinical suspicion of paraganglioma.
Source: Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics - Category: ENT & OMF Authors: Source Type: research
CONCLUSIONS The results of this study suggest that n-3 FA dietary supplementation reduces systemic inflammation by lowering AA/EPA ratios in blood serum and has potential protective effects on the progression of spinal disc degeneration, as demonstrated by reduced needle injury-induced dehydration of intervertebral discs and reduced histological signs of IVD degeneration. PMID: 31836696 [PubMed - in process]
Source: Medical Science Monitor - Category: Research Tags: Med Sci Monit Source Type: research
Publication date: Available online 14 December 2019Source: NeuroImage: ClinicalAuthor(s): Michael J. Cook, Andrew J. Gardner, Magdalena Wojtowicz, W. Huw Williams, Grant L. Iverson, Peter StanwellAbstractTask-based functional magnetic resonance imaging (fMRI) has been used to examine neuroanatomical and functional changes following mild traumatic brain injury (mTBI). Prior studies have lacked consistency in identifying common regions of altered neural activity during cognitive tasks. This may be partly due to differences in task paradigm, patient heterogeneity, and methods of fMRI analysis. We conducted a meta-analysis usi...
Source: NeuroImage: Clinical - Category: Radiology Source Type: research
ConclusionThe lower involvement of brain regions observed in Takotsubo patients suggests an impairment in emotional regulation, which might be of etiological importance in this brain-heart disease.
Source: NeuroImage: Clinical - Category: Radiology Source Type: research
ConclusionIn orthopaedics, bone defects create a high impact on the quality of life of the patient. It leads to a higher demand for bone substitutes for replacement of bone defect. Bone tissue engineering can help to replace a critical defect bone. 3D printing is a useful technology for the fabrication of scaffolds critical in bone tissue engineering. There are different binders which can create bone scaffolds with requisite mechanical strength. These binders are used to create excellent osteoconductive, bioactive scaffolds. Computed tomography (CT) and Magnetic resonance imaging (MRI) help to provide images of specific de...
Source: Journal of Clinical Orthopaedics and Trauma - Category: Orthopaedics Source Type: research
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