scholarly journals An open resource for nonhuman primate imaging

2017 ◽  
Author(s):  
Michael P. Milham ◽  
Lei Ai ◽  
Bonhwang Koo ◽  
Ting Xu ◽  
Fabien Balezeau ◽  
...  
Keyword(s):  
Data Exchange ◽  
Independent Data ◽  
Resonance Imaging ◽  
The Past ◽  
Initial Release ◽  
Neuroimaging Data ◽  
Magnetic Resonance Imaging Mri ◽  
Comparative Neuroscience ◽  
Data Collections ◽  
Human Primate

ABSTRACTNon-human primate neuroimaging is a rapidly growing area of research that promises to transform and scale translational and cross-species comparative neuroscience.Unfortunately, the technological and methodological advances of the past two decades have outpaced the accrual of data, which is particularly challenging given the relatively few centers that have the necessary facilities and capabilities. The PRIMate Data Exchange (PRIME-DE) addresses this challenge by aggregating independently acquired non-human primate magnetic resonance imaging (MRI) datasets and openly sharing them via the International Neuroimaging Data-sharing Initiative (INDI). Here, we present the rationale, design and procedures for the PRIME-DE consortium, as well as the initial release, consisting of 13 independent data collections aggregated across 11 sites (total = 98 macaque monkeys). We also outline the unique pitfalls and challenges that should be considered in the analysis of the non-human primate MRI datasets, including providing automated quality assessment of the contributed datasets.

Comorbid Depressive Disorders in Epilepsy

CNS Spectrums ◽  
2010 ◽  
Vol 15 (S4) ◽  
pp. 3-6 ◽  
Author(s):  
Andres M. Kanner ◽  
Andrew J. Cole
Keyword(s):  
Emergency Room ◽  
Depressive Disorders ◽  
Clonic Seizure ◽  
Resonance Imaging ◽  
Abnormal Signal ◽  
The Past ◽  
History Of ◽  
Magnetic Resonance Imaging Mri ◽  
The Right ◽  
History Of Depression

A 27-year-old woman presented to the emergency room after having witnessed generalized tonic clonic seizure while asleep. Birth and development were normal. She had suffered a single febrile seizure at 13 months of age, but had no other seizure risk factors. She was otherwise well except for a history of depression for which she was taking sertraline. Depressive symptoms had been well controlled over the past 3 months, but she had been under increased stress working to finish a doctoral thesis. Neurological examination was normal. Magnetic resonance imaging (MRI) showed modest asymmetry of the hippocampi, slightly smaller on the right, but no abnormal signal and well-preserved laminar anatomy. An electroencephalogram was negative. She was discharged from the emergency room with no treatment. Three weeks later, the patient's boyfriend witnessed an episode of behavioral arrest with lip smacking and swallowing automatisms lasting 45 seconds, after which the patient was confused for 20–30 minutes. The next morning she and her boyfriend kept a previously scheduled appointment with a neurologist.

scholarly journals Epileptic Seizures Induced by a Spontaneous Carotid Cavernous Fistula

2016 ◽  
Vol 2016 ◽  
pp. 1-3
Author(s):  
Güner Koyuncu Çelik ◽  
Erkan Yildirim
Keyword(s):  
Present Report ◽  
Epileptic Seizures ◽  
Digital Subtraction ◽  
Resonance Imaging ◽  
Carotid Cavernous Fistula ◽  
Cavernous Fistula ◽  
The Past ◽  
First Case ◽  
Eye Symptoms ◽  
Magnetic Resonance Imaging Mri

A 79-year-old woman was admitted to our emergency department with complaints of fainting and loss of consciousness three times during the past month. She was diagnosed with epilepsy and started to be treated with antiepileptic drug. Physical examination showed, in the left eye, chemosis, limited eye movements in all directions, and minimal exophthalmos as unexisting symptoms on admission developed on the sixth day. Orbital magnetic resonance imaging (MRI) and digital subtraction angiography (DSA) imaging revealed a carotid cavernous fistula (CCF). Epileptic attacks and ophthalmic findings previously present but diagnosed during our examinations were determined to ameliorate completely after performing the coil embolization. Based on literature, we present the first case with nontraumatic CCF manifesting with epileptic seizures and intermittent eye symptoms in the present report.

Neuroimaging of Acute Stroke

2017 ◽  
Author(s):  
Chelsea S. Kidwell ◽  
Kambiz Nael
Keyword(s):  
Acute Stroke ◽  
Resonance Imaging ◽  
Significant Progress ◽  
Stroke Patients ◽  
The Past ◽  
Stroke Imaging ◽  
Magnetic Resonance Imaging Mri ◽  
Noncontrast Computed Tomography ◽  
Acute Stroke Imaging ◽  
Multimodal Ct

The neuroimaging workup for patients with suspected acute ischemic stroke has advanced significantly over the past few decades. Evaluation is no longer limited to noncontrast computed tomography (CT), but now frequently also includes vascular and perfusion imaging. Although acute stroke imaging has made significant progress with the development of multimodal approaches, there are still many unanswered questions regarding their appropriate use in daily patient care. It is important for all physicians taking care of stroke patients to be familiar with current multimodal CT and magnetic resonance imaging (MRI) techniques, including their strengths, limitations, and their role in guiding therapy.

Neurogenic Stuttering: Further Corroboration of Site of Lesion

1996 ◽  
Vol 75 (3) ◽  
pp. 161-168 ◽  
Author(s):  
Reinhardt J. Heuer ◽  
Robert Thayer Sataloff ◽  
Steven Mandel ◽  
Nancy Travers
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Past Century ◽  
Unilateral Lesion ◽  
Resonance Imaging ◽  
The Past ◽  
Magnetic Resonance Imaging Mri

Cases of neurogenic stuttering have been reported in the literature throughout the past century. Site(s) of lesion(s) have been documented usually by association of symptoms, EEG studies and occasionally by computed tomography (CT). The authors present three cases in which the site(s) of lesion(s) are documented by CT, magnetic resonance imaging (MRI) and SPECT. This study supports previous findings of neurogenic stuttering following either bilateral diffuse lesions or a unilateral lesion. In at least one case, the actual site of the lesion would have been missed without the use of SPECT testing. EEG studies were not helpful in identifying the site of the lesion.

Enhanced magnetic resonance imaging in multiple sclerosis

2000 ◽  
Vol 6 (5) ◽  
pp. 320-326 ◽  
Author(s):  
M Filippi
Keyword(s):  
Magnetic Resonance Imaging ◽  
Multiple Sclerosis ◽  
Magnetic Resonance ◽  
Tissue Loss ◽  
Resonance Imaging ◽  
The Past ◽  
Magnetic Resonance Imaging Mri ◽  
The One ◽  
The Relationship

Gadolinium-enhanced magnetic resonance imaging (MRI) is very sensitive in the detection of active lesions of multiple sclerosis (MS) and has become a valuable tool to monitor the evolution of the disease either natural or modified by treatment. In the past few years, several studies, on the one hand, have assessed several ways to increase the sensitivity of enhanced MRI to disease activity and, on the other, have investigated in vivo the nature and evolution of enhancing lesions using different non-conventional MR techniques to better define the relationship between enhancement and tissue loss in MS. The present review is a summary of these studies whose results are discussed in the context of MS clinical trial planning and monitoring.

The Syndrome of Spontaneous Intracranial Hypotension

Cephalalgia ◽  
1999 ◽  
Vol 19 (2) ◽  
pp. 80-87 ◽  
Author(s):  
CP O'Carroll ◽  
M Brant-Zawadzki
Keyword(s):  
Intracranial Hypotension ◽  
Spontaneous Intracranial Hypotension ◽  
Subdural Effusion ◽  
Resonance Imaging ◽  
Mri Findings ◽  
The Past ◽  
Downward Displacement ◽  
Prior Literature ◽  
Magnetic Resonance Imaging Mri

The authors report four cases of headache and other symptomatology related to the syndrome of intracranial hypotension. They were seen in a routine clinical practice over the past 3 years. The clinical features, magnetic resonance imaging (MRI) findings, and follow-up of these patients are described. Review of the prior literature on the topic is also included. All four patients presented with orthostatic headache syndrome. Three of the four demonstrated diffuse leptomeningeal thickening and enhancement on MRI studies. One subsequently developed a subdural effusion. One patient demonstrated downward displacement of the posterior fossa initially, which resolved on follow-up MRI scanning. Possible pathophysiologies of the syndrome are discussed.

scholarly journals EEG Patterns in Patients with Prader-Willi Syndrome

2021 ◽  
Author(s):  
Maurizio Elia ◽  
Irene Rutigliano ◽  
Michele Sacco ◽  
Simona Madeo ◽  
Malgorzata Wasniewska ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Brain Magnetic Resonance Imaging ◽  
The Other ◽  
Prader Willi Syndrome ◽  
Resonance Imaging ◽  
Clinical Genetic ◽  
Behavioral Disturbances ◽  
Neuroimaging Data ◽  
Interictal Eeg ◽  
Magnetic Resonance Imaging Mri

Abstract Prader-Willi syndrome (PWS) is a rare disease determined by the loss of the paternal copy of the 15q11-q13 region, characterized by hypotonia, hyperphagia and obesity, short stature, hypogonadism, craniofacial dysmorphisms, cognitive and behavioral disturbances. The aims of this retrospective study were to analyze interictal EEG findings in a group of PWS patients and to correlate them with genetic, clinical and neuroimaging data. Demographic, clinical, genetic, EEG, and neuroimaging data about seventy-four patients were collected. Associations between the presence of EEG paroxysmal abnormalities, genotype, clinical and neuroimaging features were investigated. Four patients (5.4%) presented a drug-sensitive epilepsy. Interictal EEG paroxysmal abnormalities, focal or multifocal, were present in 25.7% of the cases, and normalization of EEG occurred in about 25% of the cases. In 63.2% of the cases paroxysmal abnormalities were localized over the middle-posterior regions bilaterally. Brain magnetic resonance imaging (MRI) was performed in 39 patients (abnormal in 59%). No relevant associations were found between EEG paroxysmal abnormalities and all the other variables considered. Interictal EEG paroxysmal abnormalities, in particular with a bilateral middle-posterior localization, could represent an important neurological feature of PWS not associated with genotype, cognitive or behavior endophenotypes, MRI anomalies, or prognosis.

Conventional uroradiology with excretory urography: a forgotten art?

2022 ◽  
Author(s):  
Prateek Kumar Madaan ◽  
Rohini Gupta Ghasi
Keyword(s):  
Imaging Modality ◽  
Low Cost ◽  
Excretory Urography ◽  
Resonance Imaging ◽  
Dynamic Nature ◽  
Cross Sectional ◽  
Radiation Burden ◽  
The Past ◽  
Key Points ◽  
Magnetic Resonance Imaging Mri

Excretory urography (EU) had been the most frequently performed imaging modality for uroradiology in the past. With the advances in Ultrasonography, and development of cross-sectional urography with Computed tomography (CT) and Magnetic resonance Imaging (MRI), EU is now seldom performed. Consequently, there has been a decline of expertise in this technique. However, EU has multiple advantages such as dynamic nature, easy availability, low cost and radiation burden. These render it potentially very valuable in specific indications like congenital anomalies, urothelial lesions and urinary leaks. This review intends to emphasize the current day relevance of excretory urography, outline the key points of the technique, and describe the pearls and pitfalls of interpretation.

Neuroimaging in Psychology: The Portrayal of Key Radiological Techniques in Contemporary Texts

2008 ◽  
Vol 7 (1) ◽  
pp. 46-51
Author(s):  
David Llewellyn ◽  
Alison Hodrien ◽  
Victoria Llewellyn
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Emission Tomography ◽  
Radio Frequency Pulse ◽  
Functional Magnetic Resonance ◽  
Resonance Imaging ◽  
Positron Emission ◽  
Neuroimaging Data ◽  
Magnetic Resonance Imaging Mri ◽  
Frequency Pulse

Neuroimaging is increasingly important in psychology, yet psychologists can fall prey to misconceptions. We examined the presentation of key radiological techniques in 12 widely distributed contemporary psychology texts. Errors were common in descriptions of computed tomography (CT), magnetic resonance imaging (MRI), functional magnetic resonance imaging (fMRI) and positron emission tomography (PET). For example, PET images are generated by detecting pairs of photons, not the direct measurement of positrons. Similarly, many authors omit the need for a radio frequency pulse in MRI, implying that the technique simply relies on the application of a magnetic field. Misconceptions should be addressed in an attempt to reduce levels of confusion and maximise the contribution of neuroimaging data to psychological theorising.

Magnetic Resonance Imaging Contrast Agents and the Nuclear Pharmacist

1989 ◽  
Vol 2 (3) ◽  
pp. 191-195
Author(s):  
Jeffrey A. Clanton
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Contrast Agents ◽  
Resonance Imaging ◽  
Specific Group ◽  
The Past ◽  
Iodinated Contrast ◽  
Magnetic Resonance Imaging Contrast ◽  
Magnetic Resonance Imaging Mri ◽  
Insight Into

The nuclear pharmacist works with a very specific group of drugs. These drugs generally exhibit no toxic effects and are used almost exclusively for diagnosis. In the past these have been the radioactive drugs used in nuclear medicine and the iodinated contrast agents used in radiology. However, with the advent of magnetic resonance imaging (MRI), there is an additional class of drugs used in radiology, the magnetopharmaceuticals. These drugs are designed especially for increasing diagnostic sensitivity with MRI. This article is intended to provide topical insight into the basics of MRI and magnetopharmaceuticals.

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