MAGNETIC RESONANCE IMAGING IN A ROUTINE CLINICAL SETTING

1986 ◽  
Vol 6 (1) ◽  
pp. 116
Author(s):  
H. L. Baker
1985 ◽  
Vol 60 (2) ◽  
pp. 75-90 ◽  
Author(s):  
HILLIER L. BAKER ◽  
TOM H. BERQUIST ◽  
DAVID B. KISPERT ◽  
DAVID F. REESE ◽  
O. WAYNE HOUSER ◽  
...  

2013 ◽  
Vol 6 ◽  
pp. CCRep.S13309
Author(s):  
Hieu Tran ◽  
Anthony Allworth ◽  
Cameron Bennett

We report a rare cause of encephalitis that is not often described in the adult clinical setting. Our case was a 16-year-old female who presented with a clinical picture of viral encephalitis; however, magnetic resonance imaging showed a demyelinating lesion of the left frontal lobe. In this age group, differential diagnoses of acute demyelination encephalomyelitis and multiple sclerosis were entertained. Further investigations demonstrated positive Mycoplasma pneumoniae serology. As a result, a diagnosis of Mycoplasma pneumoniae-associated encephalitis was made based on a process of exclusion.


2021 ◽  
Vol 11 (12) ◽  
pp. 1613
Author(s):  
Gianvincenzo Sparacia ◽  
Giuseppe Parla ◽  
Giuseppe Mamone ◽  
Mariangela Caruso ◽  
Fabio Torregrossa ◽  
...  

Resting-state functional magnetic resonance imaging (rest-f-MRI) is a neuroimaging technique that has demonstrated its potential in providing new insights into brain physiology. rest-f-MRI can provide useful information in pre-surgical mapping aimed to balancing long-term survival by maximizing the extent of resection of brain neoplasms, while preserving the patient’s functional connectivity. Rest-fMRI may replace or can be complementary to task-driven fMRI (t-fMRI), particularly in patients unable to cooperate with the task paradigm, such as children or sedated, paretic, aphasic patients. Although rest-fMRI is still under standardization, this technique has been demonstrated to be feasible and valuable in the routine clinical setting for neurosurgical planning, along with intraoperative electrocortical mapping. In the literature, there is growing evidence that rest-fMRI can provide valuable information for the depiction of glioma-related functional brain network impairment. Accordingly, rest-fMRI could allow a tailored glioma surgery improving the surgeon’s ability to increase the extent of resection (EOR), and simultaneously minimize the risk of damage of eloquent brain structures and neuronal networks responsible for the integrity of executive functions. In this article, we present a review of the literature and illustrate the feasibility of rest-fMRI in the clinical setting for presurgical mapping of eloquent networks in patients affected by brain tumors, before and after tumor resection.


2021 ◽  
Author(s):  
Hannah Eichhorn ◽  
Andreea-Veronica Vascan ◽  
Martin Nørgaard ◽  
Andreas Høyby Ellegaard ◽  
Jakob Slipsager ◽  
...  

Head motion is one of the major reasons for artefacts in Magnetic Resonance Imaging (MRI), which is especially challenging for children who are often intimidated by the dimensions of the MR scanner. In order to optimise the MRI acquisition for children in the clinical setting, insights into children's motion patterns are essential. In this work, we analyse motion data from 61 pediatric patients. We compare structural MRI data of children imaged with and without general anaesthesia (GA), all scanned using the same hybrid PET/MR scanner. We analyse several metrics of motion based on the displacement relative to a reference, decompose the transformation matrix into translation and rotation, as well as investigate how different regions in the brain are affected by motion. Head motion for children without GA was significantly higher (mean displacement of $2.19 \pm 0.93$ mm (median $\pm$ standard deviation) during $41.7 \pm 7.5$ min scans); however, even anaesthetised children showed substantial residual head motion (mean displacement of $1.12 \pm 0.35$ mm). For both patient groups translation along the z-axis (along the scanner bore) was significantly larger in absolute terms (GA / no GA: $0.87 \pm 0.29$ mm / $0.92 \pm 0.49$ mm) compared to the other directions. Considering directionality, both patient groups were moving in negative z-direction and thus, out of the scanner. The awake children additionally showed significantly more nodding rotation ($0.33 \pm 0.20~^{\circ}$). Consequently, in future studies as well as in the clinical setting, these predominant types of motion need to be taken into consideration to limit artefacts and reduce re-scans due to poor image quality.


2000 ◽  
Author(s):  
Rajakumar Israel ◽  
Theresa Atkinson

Abstract Tendon and ligament typically produce a weak signal during Magnetic Resonance Imaging (MRI). As a result only gross defects in the tissue could be detected. A method was recently developed to allow more detailed images of tendon structure to be obtained. This new method requires less than 2.5 minutes per scan and is therefore a reasonable method to utilize in a clinical setting to evaluate tendon or ligament injury and healing.


2011 ◽  
Vol 8 (2) ◽  
pp. 307-312
Author(s):  
Hugo Alexandre Fereira ◽  
Alexandre Andrade ◽  
Pedro Contreiras Pinto ◽  
Luis Monteiro Rodrigues

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