Magnetic Resonance Imaging of the Brain in Children With Headache

2011 ◽  
Vol 50 (12) ◽  
pp. 1134-1139 ◽  
Author(s):  
Phillipp Fridolin Streibert ◽  
Werner Piroth ◽  
Michael Mansour ◽  
Patrick Haage ◽  
Thorsten Langer ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Clinical Relevance ◽  
State Of The Art ◽  
Resonance Imaging ◽  
Magnetic Resonance Imaging Mri ◽  
The Brain

The aim of this study was to evaluate the frequency of abnormal findings in magnetic resonance imaging (MRI) in children with headache, the clinical relevance of these findings, and whether more sophisticated technologies also result in more relevant abnormal findings. The MRIs of 1004 children with age ranging from 1 to 17 years were retrospectively analyzed. Children who were investigated with established sequences (n = 419) were compared with those examined with state-of-the-art MRI acquisition technology (n = 585). In 216/1004 investigations, MRI was performed because of headache (74/216 with established sequences, 142/216 with state-of-the-art acquisition technology). In 114/216 (52.8%) patients with headache, the MRI was abnormal with relevant findings in 23/114 patients and findings without clinical relevance in 91/114 children. A higher incidence of abnormal findings than in previous reports was found but there was only limited clinical gain of information using modern sequences in children with headache.

scholarly journals 876 Disorders of the Brain Revealed by Magnetic Resonance Imaging (MRI) in Infants with Severe Congenital Cytomegaly

2010 ◽  
Vol 68 ◽  
pp. 440-440
Author(s):  
B Milewska-Bobula ◽  
B Lipka ◽  
J Zebrowska ◽  
E Jurkiewicz ◽  
I Pakula-Kosciesza ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Resonance Imaging ◽  
Magnetic Resonance Imaging Mri ◽  
The Brain

Magnetic resonance imaging of catalytically relevant processes

2019 ◽  
Vol 0 (0) ◽  
Author(s):  
Alexandra I. Svyatova ◽  
Kirill V. Kovtunov ◽  
Igor V. Koptyug
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
State Of The Art ◽  
Chemical Processes ◽  
Resonance Imaging ◽  
Heterogeneous Catalytic ◽  
Heterogeneous Catalytic Processes ◽  
Hyperpolarized Mri ◽  
Magnetic Resonance Imaging Mri ◽  
Low Sensitivity

Abstract The main aim of this article is to provide a state-of-the-art review of the magnetic resonance imaging (MRI) utilization in heterogeneous catalysis. MRI is capable to provide very useful information about both living and nonliving objects in a noninvasive way. The studies of an internal heterogeneous reactor structure by MRI help to understand the mass transport and chemical processes inside the working catalytic reactor that can significantly improve its efficiency. However, one of the serious disadvantages of MRI is low sensitivity, and this obstacle dramatically limits possible MRI application. Fortunately, there are hyperpolarization methods that eliminate this problem. Parahydrogen-induced polarization approach, for instance, can increase the nuclear magnetic resonance signal intensity by four to five orders of magnitude; moreover, the obtained polarization can be stored in long-lived spin states and then transferred into an observable signal in MRI. An in-depth account of the studies on both thermal and hyperpolarized MRI for the investigation of heterogeneous catalytic processes is provided in this review as part of the special issue emphasizing the research performed to date in Russia/USSR.

Application of Artificial Intelligence in Magnetic Resonance Imaging to reduce Gadolinium accumulation in patients with multiple sclerosis: A Review

2021 ◽  
Vol 1 (4) ◽  
pp. 416-428
Author(s):  
Vijay Anant Athavale ◽  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Artificial Intelligence ◽  
Multiple Sclerosis ◽  
Magnetic Resonance ◽  
Resonance Imaging ◽  
Mri Scans ◽  
The Central Nervous System ◽  
Magnetic Resonance Imaging Mri ◽  
The Brain ◽  
New Onset

Gadolinium (Gd) is a based contrast agent is used for Magnetic Resonance Imaging (MRI). In India, gadobutrolhas been is approved for MRI of the Central Nervous System (CNS), liver, kidneys, and breast. It has been noted in several studies that the accumulation of gadolinium occurs in different structures in the brain. Patients with Multiple Sclerosis (MS) are regularly followed up with MRI scans and MRI with contrast enhancement is the most common method of distinguishing new-onset pathological changes. Developments in technology and methods in artificial intelligence have shown that there is reason to map out the X-ray technician’s work with examinations and medicines administered to patients may be altered to prevent the accumulation of gadolinium.

Cavitating Leukoencephalopathy With Posterior Predominance Caused by a Deletion in the APOPT1 Gene in an Indian Boy

2018 ◽  
Vol 33 (6) ◽  
pp. 428-431 ◽  
Author(s):  
Suvasini Sharma ◽  
Preeti Singh ◽  
Erika Fernandez-Vizarra ◽  
Massimo Zeviani ◽  
Marjo S. Van der Knaap ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Molecular Analysis ◽  
Coenzyme Q ◽  
Resonance Imaging ◽  
Truncated Protein ◽  
Magnetic Resonance Imaging Mri ◽  
The Brain

A 5-year-old Indian boy presented with subacute onset regression of milestones associated with seizures and spasticity. The symptoms started after an attack of measles. The magnetic resonance imaging (MRI) of the brain showed cavitating leukodystrophy with posterior predominance. Molecular analysis of the APOPT1 gene, a recently described gene associated with mitochondrial leukodystrophy, showed the patient to be homozygous for a 12.82-kilobase deletion, including coding exon 3. Deletion of exon 3 produces a frameshift, predicting the translation of a truncated protein (p.Glu121Valfs*4). The patient was started on mitochondrial cocktail regimen of thiamine, riboflavin, coenzyme Q and carnitine. Although he initially showed some improvement, he died 6 months after the onset of his illness.

scholarly journals Deep sedation with midazolam and propofol in children undergoing ambulatory magnetic resonance imaging of the brain

2011 ◽  
Vol 68 (10) ◽  
pp. 842-845 ◽  
Author(s):  
Jasna Jevdjic ◽  
Maja Surbatovic ◽  
Svetlana Drakulic-Miletic ◽  
Filip Zunic
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Adverse Events ◽  
Induction Time ◽  
Deep Sedation ◽  
Resonance Imaging ◽  
Respiratory Events ◽  
Two Factors ◽  
Magnetic Resonance Imaging Mri ◽  
The Brain

Backround/Aim. Sedation is necessary in children undergoing magnetic resonance imaging (MRI) to ensure motionless. The success of sedation is typically measured by two factors: safety (lack of adverse events) and effectiveness of the procedure (successful completion of the diagnostic examination). Propofol is frequently used to induce deep sedation in children. However, increased doses of propofol may lead to oversedation and respiratory depression. The aim of the study was to investigate sedation in children using propofol with midazolam in regard to efficacy, adverse events and time to return to presedation functional status. Methods. We investigated 24 children prospectively. Sedation was introduced with a single bolus of intravenous (iv) midazolam 0.1 mg/kg followed by repeated small iv boluses of propofol until sufficient depth of sedation was obtained. The outcome of sedation was measured by the induction time, sedation time, need for additional sedation, respiratory events, cardiovascular events and sedation failure. Results. Median age of children was 4.72 ? 3.06 (1.1-12.3) years and their body weight was 21.3 ? 11.9 (11-60) kg. Average propofol bolus dose for induction was 1.76 ? 0.9 (0.5-4) mg/kg. The induction time was 8.88 ? 2.92 (5-15) min, and sedation time 28.39 ? 8.42 (20-50) min. Additional sedation was necessary in 3 (12.5%) patients. Unsucesfull sedation or significant adverse events were not observed. Conclusion. The presented sedation technique for children undergoing ambulatory MRI of the brain is safe and adequate. This sedation regiment provides short induction time, fast recovery, stable cardiorespiratory conditions and rarely demans additional sedation.

Non-Neoplastic Dural Sinus Thrombosis

2005 ◽  
Vol 18 (5-6) ◽  
pp. 581-588
Author(s):  
I. Tsitouridis ◽  
P. Papapostolou ◽  
J. Rudolf ◽  
K. Natsis ◽  
L. Tarazi ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Sinus Thrombosis ◽  
Magnetic Resonance Venography ◽  
Dural Sinus ◽  
Dural Sinus Thrombosis ◽  
Resonance Imaging ◽  
Magnetic Resonance Imaging Mri ◽  
Mri Study ◽  
The Brain

Magnetic Resonance Imaging (MRI) study of the brain and Magnetic Resonance Venography (MRV) offer major advantages in evaluating patients suspected of having dural sinus thrombosis. Since 2002, we have examined 49 patients in our department with definite dural sinus thrombosis. MRI and MRV revealed the thrombosis of the dural sinus, and the underlying cause in most patients. There is consensus in the literature that MRI scanning in combination with MRV is the method of choice for evaluating dural sinus thrombosis, and this is also the end result of our study. We also compared the 3D-TOF technique and 2D-PC technique for MRV examination and found that the 3D-TOF technique is clearly the method of choice.

Magnetic resonance imaging and diffusion‐weighted imaging in methylmalonic acidemia

2005 ◽  
Vol 46 (1) ◽  
pp. 101-103 ◽  
Author(s):  
A. Yeşildağ ◽  
A. Ayata ◽  
B. Baykal ◽  
M. Koroglu ◽  
H. Yıldız ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Diffusion Weighted Imaging ◽  
Methylmalonic Acidemia ◽  
Resonance Imaging ◽  
Laboratory Findings ◽  
Diffusion Weighted ◽  
Magnetic Resonance Imaging Mri ◽  
The Brain ◽  
And Diffusion

Methylmalonic acidemia (MMA) is an inborn disorder of amino acid metabolism, often presenting with neurological symptoms. We present the results of magnetic resonance imaging (MRI) and diffusion‐weighted imaging (DWI) of the brain in a 16‐month‐old male patient with classic neurological and laboratory findings for MMA. MRI demonstrated the hyperintensity within globi pallidi both on T2‐weighted image and DWI during the acute episode of metabolic acidosis.

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