Adverse effects of metallic artifacts on voxel-wise analysis and tract-based spatial statistics in diffusion tensor imaging.

CONCLUSION: Metallic implants existing outside the field of view produce artifacts that affect the statistical analysis (voxel-wise group comparisons) for FA mapping. When statistical analysis for FA mapping is conducted by researchers, it is important to pay attention to any dental implants present in the mouths of the participants. PMID: 27069095 [PubMed - as supplied by publisher]
Source: Acta Radiologica - Category: Radiology Authors: Tags: Acta Radiol Source Type: research

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Publication date: Available online 9 December 2019Source: NeuroImageAuthor(s): Robert A. Brown, Dumitru Fetco, Robert Fratila, Giulia Fadda, Shangge Jiang, Nuha M. Alkhawajah, E. Ann Yeh, Brenda Banwell, Amit Bar-Or, Douglas L. Arnold, Canadian Pediatric Demyelinating Disease NetworkAbstractIn conventional non-quantitative magnetic resonance imaging, image contrast is consistent within images, but absolute intensity can vary arbitrarily between scans. For quantitative analysis of intensity data, images are typically normalized to a consistent reference. The most convenient reference is a tissue that is always present in th...
Source: NeuroImage - Category: Neuroscience Source Type: research
by Lara C. Foland-Ross, Bruce Buckingam, Nelly Mauras, Ana Maria Arbelaez, William V. Tamborlane, Eva Tsalikian, Allison Cato, Gabby Tong, Kimberly Englert, Paul K. Mazaika, Allan L. Reiss, for the Diabetes Research in Children Network (DirecNet) BackgroundOptimal glycemic control is particularly difficult to achieve in children and adolescents with type 1 diabetes (T1D), yet the influence of dysglycemia on the developing brain remains poorly understood. Methods and findingsUsing a large multi-site study framework, we investigated activation patterns using functional magnetic resonance imaging (fMRI) in 93 children with T1...
Source: PLoS Medicine - Category: Internal Medicine Authors: Source Type: research
This study aimed to clarify the diagnostic performance of DWI for assessing LN metastasis compared with positron emission tomography (PET) in patients with esophageal squamous cell cancer (eSCC).MethodsSeventy-six patients with histologically proven eSCC who underwent curative esophagectomy without neoadjuvant treatment were reviewed retrospectively. Harvested LNs were divided into 1229 node stations with 94 metastases. Diagnostic abilities and prognostic significance were compared.ResultsIn a station-by-station evaluation, the sensitivity was higher in DWI than PET (67% vs. 32%,P  
Source: Esophagus - Category: Gastroenterology Source Type: research
Conclusions: The successful treatment of this patient was the result of the collaboration between the neurology and neuroradiology departments.The first therapeutic option in carotid dissection has to be stenting, under certain conditions. PMID: 31803282 [PubMed]
Source: Journal of Medicine and Life - Category: General Medicine Tags: J Med Life Source Type: research
Conclusion: By use of our nomogram, bone scans of men with prostate cancer can be avoided in a large proportion of men. PMID: 31805808 [PubMed - as supplied by publisher]
Source: Scandinavian Journal of Urology - Category: Urology & Nephrology Tags: Scand J Urol Source Type: research
Objective The aim of this study was to assess the signal intensity of the anterior pituitary (AP) gland on unenhanced T1-weighted images in patients with history of serial intravenous injections of gadodiamide and normal renal function. Materials and Methods We included 53 patients who had undergone at least 5 injections of gadodiamide and a control group of 15 subjects who underwent at least 5 brain magnetic resonance imaging without gadolinium-based contrast agents. Using unenhanced sagittal T1-weighted images, values of mean signal intensity of the AP and of the central pons were obtained. Anterior pituitary–...
Source: Investigative Radiology - Category: Radiology Tags: Original Articles Source Type: research
Objectives The aim of this study was to evaluate the significance of a new imaging sign, the “cloverleaf sign,” in diagnosing deep infiltrating endometriosis (DIE) with magnetic resonance imaging (MRI) in concordance to intraoperative findings. Materials and Methods This retrospective study included 103 patients operated during the January 2016 to June 2018 period with preoperative 1.5 T and 3 T MRI, with or without vaginal and rectal gel filling. Magnetic resonance imaging scans were read blinded to intraoperative findings by a specialized gynecologic radiologist and a junior radiologist, and then compare...
Source: Investigative Radiology - Category: Radiology Tags: Original Articles Source Type: research
CONCLUSION: The method of numerical simulation with the MRI simulator using a phase map was close to the actual conditions and was considered to be useful for the validation of new sampling methods. The random sampling method using GH is expected to be useful for the highly efficient acquisition of data under ideal conditions; however, more accurate phase correction is necessary to apply the actual measurement data. PMID: 31802054 [PubMed - in process]
Source: Hellenic Journal of Nuclear Medicine - Category: Nuclear Medicine Tags: Hell J Nucl Med Source Type: research
CONCLUSIONS: This case series demonstrates that the use of a high frequency jet ventilator for cardiac MRI was feasible, safe, providing good quality cardiac imaging and avoiding anesthesia personnel to be inside the hazardous environment of MRI room. Future studies are needed to confirm its safety and efficiency in pediatric patients. PMID: 31796302 [PubMed - as supplied by publisher]
Source: Revista Brasileira de Anestesiologia - Category: Anesthesiology Tags: Rev Bras Anestesiol Source Type: research
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Source: TIME: Health - Category: Consumer Health News Authors: Tags: Uncategorized medicine onetime Research syndication Source Type: news
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