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Schneller Julia J Institute for Clinical Radiology, Ludwig-Maximilians-University Hospital Munich, Munich, - - 2014
The purpose of this study was to provide normal values of volumetry and linear dimensions of adrenal glands. Contrast-enhanced multidetector computed tomography scans of 105 patients were evaluated in this retrospective study. Imaging software was used both to measure the adrenal gland volume and to determine linear dimensions and density. ...
Afzelius Pia P Department of Diagnostic Imaging, North Zealand Hospital, Copenhagen, - - 2014
The major salivary glands, submandibular, parotid and sublingual glands play an important role in preserving the oral cavity and dental health. Patients with problems of the major salivary glands may present with symptoms such as dry mouth, dysphagia and obstruction of duct, inflammation, severe dental caries or swelling. Imaging plays ...
Yokosawa Masahiro M Department of Internal Medicine, Faculty of Medicine, University of Tsukuba , Ibaraki , - - 2014
Objective. To assess the correlation between MR imaging (MRI) of parotid glands with X-ray sialography, histopathology of the labial salivary glands, and salivary secretion, in patients with secondary Sjögren's syndrome (SS) associated with rheumatoid arthritis (RA). Methods. Non-contrast MRI of the parotid glands was performed in 13 secondary SS patients ...
Natasha Shiggaon S Departments of Pedodontics and Preventive Dentistry, Rajiv Gandhi Dental College & Hospital, Bangalore, Karnataka, - - 2014
Parotid fistula is a cause of great distress and embarrassment to the patient. Parotid fistula is most commonly a post-traumatic situation. Congenital parotid salivary fistulas are unusual entities that can arise from accessory parotid glands or even more infrequently, from normal parotid glands through an aberrant Stensen's duct. The treatment ...
Wang Jing J Department of Radiology, Huashan Hospital, Fudan University, 12 Wulumuqi Road, Shanghai, 200040, People's Republic of - - 2014
The aim of this study was to explore the value of three-dimensional sampling perfection with application-optimized contrasts using different flip-angle evolutions (3D-SPACE) sequence in assessment of pituitary micro-lesions. Coronal 3D-SPACE as well as routine T1- and dynamic contrast-enhanced (DCE) T1-weighted images of the pituitary gland were acquired in 52 patients ...
Noureldine Salem I SI Division of Head and Neck Endocrine Surgery, Department of Otolaryngology - Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, - - 2014
Multiphase computed tomography (CT) involves multiple cervical CT acquisitions to accurately identify hyperfunctional parathyroid glands, thus increasing radiation exposure to the patient. We hypothesized that only 2 cervical acquisitions, instead of the conventional 4, would provide equivalent localization information and halve the radiation exposure. We identified 53 consecutive patients with ...
Lu Hung-I HI Department of Cardiovascular and Thoracic Surgery, Chang Gung Memorial Hospital-Kaohsiung Medical Center, Chang Gung University College of Medicine, 123 Ta-Pei Rd, Niao-Sung District, Kaohsiung City, - - 2014
Hypertrophic mediastinal parathyroid glands (HMPGs) play a role in recurrent secondary hyperparathyroidism (SHPT). Thoracoscopic retrieval of HMPGs has been proposed. Twelve patients with recurrent SHPT owing to HMPGs were enrolled. We divided the locations of HMPGs below the innominate vein and right to the ascending aorta as Zone I, those ...
Michaud Laure L Department of Nuclear - - 2014
Preoperative ultrasonography and scintigraphy using (99m)Tc-sestamibi are commonly used to localise abnormal parathyroid glands. In cases of discrepant results between scintigraphy and ultrasonography, it is important to rely on another diagnostic imaging modality. (18)F-fluorodeoxyglucose (FDG) and (11)C-methionine positron emission tomography (PET) have been studied but are imperfect to detect abnormal ...
Hirata Kenji K Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of California, Los Angeles, CA, - - 2014
A 34-year-old man found a mildly tender preauricular mass. Ultrasonography revealed an anechoic mass in the superficial lobe of the parotid gland. Magnetic resonance imaging showed thin ring-like contrast enhancement and homogenously high intensity on T2-weighted images. The mass was resected due to its rapid growth. The cystic lesion contained ...
Markiewicz Erica E Department of Radiology, The University of - - 2014
The purpose of this study was to use high resolution 3D MRI to study mouse mammary gland ductal architecture based on intra-ductal injection of contrast agents. Female FVB/N mice age 12-20 weeks (n=12), were used in this study. A 34G, 45° tip Hamilton needle with a 25uL Hamilton syringe was ...
Radhakrishnan Rupa R Department of Radiology, Cincinnati Children's Hospital Medical Center, 3333 Burnet Ave., Cincinnati, OH, 45040, USA, - - 2014
We present a case of an infant with congenital salivary gland anlage tumor, with fetal and postnatal imaging. To the best of our knowledge, this is the first case describing the in utero imaging findings of salivary gland anlage tumor. A fetal MRI was performed secondary to the clinical finding ...
Johansson Adam A Radiation Physics, Department of Radiation Sciences, Umeå University, Umeå SE-90187, - - 2014
Computed tomography (CT) substitute images can be generated from ultrashort echo time (UTE) MRI sequences with radial k-space sampling. These CT substitutes can be used as ordinary CT images for PET attenuation correction and radiotherapy dose calculations. Parallel imaging allows faster acquisition of magnetic resonance (MR) images by exploiting differences ...
Custer Philip L PL Department of Ophthalmology and Visual Sciences, Washington University School of Medicine, St Louis, Missouri, - - 2014
Ophthalmologists are dependent on computed tomography (CT) and MRI to aid in the diagnosis and management of patients with orbital and visual conditions. Pitfalls in the imaging process can lead to inefficient care or patient harm. This review summarizes these problems and provides methods to reduce imaging errors. There has ...
Suthar Pokhraj Prakashchandra PP Department of Radiodiagnosis, Medical College Baroda, Vadodara, Gujarat, - - 2014
A 12-year-old girl presented with dysphagia and a feeling of fullness in the throat. On examination a midline smooth, rubbery and reddish mass was seen at the base of the tongue, which moved with deglutination and protrusion of the tongue. A thyroid function test was within normal limits. On ultrasonography, ...
de Margerie-Mellon Constance - - 2013
The extent of diffusion lesion on pretreatment imaging is a risk factor for poor outcome and hemorrhagic transformation after thrombolysis, and volumes of 70 to 100 mL have been advocated as cut-offs. However, estimating diffusion-weighted imaging (DWI) lesion volume (VolDWI) in the acute setting may be cumbersome. We aimed to ...
Johansson Adam - - 2013
Background. Estimation of computed tomography (CT) equivalent data, i.e. a substitute CT (s-CT), from magnetic resonance (MR) images is a prerequisite both for attenuation correction of positron emission tomography (PET) data acquired with a PET/MR scanner and for dose calculations in an MR-only radiotherapy workflow. It has previously been shown ...
Jonsson Joakim H - - 2013
The use of magnetic resonance imaging (MRI) as a complement to computed tomography (CT) in the target definition procedure for radiotherapy is increasing. To eliminate systematic uncertainties due to image registration, a workflow based entirely on MRI may be preferable. In the present pilot study, we investigate dose calculation accuracy ...
Boyer A C AC Department of Diagnostic Radiology, Oakland University William Beaumont School of Medicine, Rochester, MI 48073, USA. - - 2013
To evaluate the reproducibility of regional apparent diffusion coefficient (ADC) measurements of the normal fetal brain in the second and third trimesters of pregnancy. Fifty normal singleton fetuses from healthy pregnant women between 19 and 37 weeks' gestation were studied without sedation. Single-shot diffusion-weighted images of the fetal brain were ...
Gutzeit Andreas - - 2012
The aim of this study was to clarify whether addiction-specific neurometabolic reaction patterns occur in the insular cortex during acute nicotine withdrawal in tobacco smokers in comparison to nonsmokers. Fourteen male smokers and 10 male nonsmokers were included. Neurometabolites of the right and the left insular cortices were quantified by ...
Bhadauria H S HS Department of Electrical Engineering, Indian Institute of Technology, Roorkee, India. - - 2012
This paper presents an adaptive denoising approach aiming to improve the visibility and detectability of hemorrhage from brain computed tomography (CT) images. The suggested approach fuses the images denoised by total variation (TV) method, denoised by curvelet-based method, and edge information extracted from the noise residue of TV method. The ...
Mohammad Shaimaa Abdelsattar - - 2012
PURPOSE: To define the role of MRI in the preoperative assessment of patients with persistent cloaca and whether it can substitute other imaging modalities. METHODS: We prospectively examined eleven patients with persistent cloaca between July 2007 and March 2012. Non contrast MRI examinations were performed on 1.5T magnet using head ...
Nawas Mohammed T - - 2012
ABSTRACT: Cerebellar hypometabolism on FDG PET has been described in several conditions, for example, chronic alcohol abuse, antiepileptic medication use, multiple system atrophy, and cerebellar infarction. Corresponding cross-sectional examination is paramount in distinguishing possible etiologies because each condition has a relatively characteristic appearance. We present a case of an asymptomatic ...
Mertens Koen - - 2012
To determine the optimal timing for imaging brain tumours and other brain lesions with F-labelled fluoromethylcholine (F-FCho) PET. Dynamic PET imaging with F-FCho (acquisition time of 28 min) was performed in 24 patients with space-occupying lesions in the brain. On the coregistered PET and MRI, lesion-to-normal tissue uptake ratios (LNRs) ...
Kim Andrew Chae - - 2012
ABSTRACT: In the United States, approximately 1.7 million patients are treated annually for traumatic brain injury, and cerebrovascular insults are the third leading cause of death. Although CT plays a central role in the initial assessment of suspected intracranial injury, planar brain scintigraphy provides valuable information regarding cerebral perfusion, function, ...
Gregory Sarah S Forensic and Neurodevelopmental Sciences Department, Institute of Psychiatry, King's College London, England, - - 2012
The population of men who display persistent antisocial and violent behavior is heterogeneous. Callous-unemotional traits in childhood and psychopathic traits in adulthood characterize a distinct subgroup. To identify structural gray matter (GM) differences between persistent violent offenders who meet criteria for antisocial personality disorder and the syndrome of psychopathy (ASPDP) ...
Sun Xiumei - - 2012
The appearance of cognitive dysfunction after cardiac surgery in the absence of focal neurologic signs, a poorly understood but potentially devastating complication, almost certainly results from procedure-related brain injury. Confirmation of the occurrence of perioperative silent brain injury has been developed through advances in magnetic resonance imaging (MRI) techniques. These ...
Labate A - - 2012
BACKGROUND AND PURPOSE: Autosomal dominant nocturnal frontal lobe epilepsy (ADNFLE) is a distinct epileptic syndrome with a broad range of severity even amongst affected members of the same pedigree, and the level of pharmacoresistance may reach 30%, close to that seen in sporadic focal epilepsies. METHODS: To investigate this issue ...
Johnson Brian - - 2012
Advanced neuroimaging techniques have shown promise in highlighting the subtle changes and nuances in mild traumatic brain injury (MTBI) even though clinical assessment has shown a return to pre-injury levels. Here we use ¹H-magnetic resonance spectroscopy (¹H-MRS) to evaluate the brain metabolites N-acetyl aspartate (NAA), choline (Cho), and creatine (Cr) ...
Moon Il Joon - - 2012
Although central nervous system abnormalities are incidentally detected in preoperative brain magnetic resonance imaging (MRI) studies in pediatric cochlear implant (CI) candidates, the clinical significance of the abnormalities remains unclear. We aimed to assess post-implantation auditory and speech performance in patients with brain lesions seen on MRI. Pediatric CI recipients ...
Hilschenz Ingo - - 2012
Within the magnetic resonance imaging (MRI) community the trend is going to higher and higher magnetic fields, ranging from 1.5 T to 7 T, corresponding to Larmor frequencies of 63.8-298 MHz. Since for high-field MRI the magnetization increases with the applied magnetic field, the signal-to-noise-ratio increases as well, thus enabling ...
Park Jaechan - - 2012
BACKGROUND: In ultra-early aneurysm surgery, the few hours from admission to aneurysm clipping present the greatest risk for an in-hospital recurrent hemorrhage, the development of acute hydrocephalus, and severe brain edema. Thus, severe brain swelling encountered after dural opening in a craniotomy can sometimes not be explained by a preoperative ...
Harrison Daniel M DM Department of Neurology, Johns Hopkins University, 600 North Wolfe Street, Pathology 622A, Baltimore, MD 21287, USA. - - 2013
Although diffusion tensor imaging (DTI) and the magnetization transfer ratio (MTR) have been extensively studied in multiple sclerosis (MS), it is still unclear if they are more effective biomarkers of disability than conventional MRI. MRI scans were performed on 117 participants with MS in addition to 26 healthy volunteers. Mean ...
Carducci Filippo - - 2012
In the search for a less expensive alternative to magnetic resonance imaging (MRI), which is contraindicated in some patients, we evaluated the accuracy of an individualized MR template-based head model in terms of navigated brain stimulation system targeting. The mean error between the identification of target points on individualized and ...
Kimura Yukio - - 2012
Static encephalopathy of childhood with neurodegeneration in adulthood (SENDA) is a recently established disorder that is a subtype of neurodegeneration with brain iron accumulation (NBIA). We presented the first case report of SENDA of a 39-year-old female. She had psychomotor retardation from childhood and remained static for two decades. Then, ...
José-López R - - 2012
Clinical signs and magnetic resonance imaging findings of multiple brain infarcts in two dogs infected with Leishmania spp. are reported. Clinical signs of intracranial dysfunction were peracute and there was no further deterioration. Magnetic resonance images of the brain were consistent with multifocal, non-haemorrhagic, ischaemic lesions. Routine serum biochemistry revealed ...
Stecco A - - 2012
PURPOSE: This study was undertaken to identify tumoural infiltration of peri-enhancing brain tissue in patients with glioblastoma by means of perfusion computed tomography (PCT) parameters, cerebral blood volume (CBV) and permeability surface (PS). MATERIALS AND METHODS: Eight patients with surgically treated glioblastoma who were eligible for radiotherapy and nine patients ...
Lanz Bernard - - 2012
The recent developments in high magnetic field (13) C magnetic resonance spectroscopy with improved localization and shimming techniques have led to important gains in sensitivity and spectral resolution of (13) C in vivo spectra in the rodent brain, enabling the separation of several (13) C isotopomers of glutamate and glutamine. ...
Lu Yu-Yu - - 2012
RATIONALE AND OBJECTIVES: Early detection of regional cerebral anomalies in acute carbon monoxide (CO) poisoning by (99m)Tc-hexamethylprophylene amine oxime (HMPAO) brain single photon emission computed tomography (SPECT) imaging has been reported previously. However, SPECT findings varied in these studies because of their small population sizes. In this study, we included ...
Pienaar Rudolph - - 2012
In patients presenting with cerebral ischemic injury, the outcome of injured brain tissue quantified as decreased apparent diffusion coefficient (ADC) may depend on associated alterations in cerebral blood perfusion (CBP). This study proposes a non-biased method to quantify associations between ADC and CBP in newborns with global or focal cerebral ...
Rosenbluth Kathryn H KH Department of Neurosurgery, University of California San Francisco, San Francisco, California, USA. - - 2012
To characterize the effects of pressure-driven brain infusions using high field intra-operative MRI. Understanding these effects is critical for upcoming neurodegeneration and oncology trials using convection-enhanced delivery (CED) to achieve large drug distributions with minimal off-target exposure. High-resolution T2-weighted and diffusion-tensor images were acquired serially on a 7 Tesla MRI ...
Cho Zang Hee ZH Neuroscience Research Institute, Gachon University of Medicine and Science, Incheon, Republic of Korea. - - 2013
Advances in the new-generation of ultra-high-resolution, brain-dedicated positron emission tomography-magnetic resonance imaging (PET/MRI) systems have begun to provide many interesting insights into the molecular dynamics of the brain. First, the finely delineated structural information from ultra-high-field MRI can help us to identify accurate landmark structures, thereby making it easier to ...
Magro Elsa - - 2012
INTRODUCTION: Diffusion tensor imaging and tractography allow studying white matter fiber bundles in the human brain in vivo. Electrophysiological studies and postmortem dissections permit improving our knowledge about the short association fibers connecting the pre- and postcentral gyri. The aim of this study was first to extract and analyze the ...
Neubauer Henning - - 2012
Diffusion-weighted MRI (DWI) is helpful for detection of brain abscess and pelvic abscess in adults. In the present study, we evaluated the diagnostic performance of DWI in children and young adults with abdominal and soft tissue abscess formations. Seventeen patients (11 females, aged 13 ± 6 years) with suspected abdominal ...
Abosch Aviva - - 2012
: Structural and functional MR images of the human brain acquired at 7 Tesla exhibit rich informational content with potential utility for clinical applications. However, (1) substantial increases in susceptibility artifact, and (2) the possibility of geometrical distortion at increased magnetic field strength, would be detrimental for stereotactic procedures such ...
Mertens Koen - - 2012
To evaluate the distribution of F-labelled fluoromethylcholine (FCho) in normal structures and tumors of the head region using positron emission tomography (PET) and magnetic resonance imaging. We retrospectively reviewed the positron emission tomography, magnetic resonance imaging, and the coregistered images obtained in 17 patients with suspected high-grade gliomas. The accumulation ...
Morrow Chris J - - 2012
Investigation of unexpected mortality in caged layer chickens led to the discovery of a consistent traumatic injury to the heads of affected hens. Initial post-mortem examination found linear skin lacerations and associated fractures in the dorsal cranium of all birds examined, and 5 to 10 mm deep trauma in the ...
Luther Neal - - 2012
: Standard magnetic resonance imaging (MRI) is normal following the vast majority of concussions. Diffusion tensor imaging (DTI) and susceptibility-weighted imaging (SWI) are advanced MRI techniques hypothesized to be more sensitive in detecting subtle evidence of structural brain injury. Using DTI and SWI in National Football League (NFL) players, we ...
Song Ming - - 2012
The functional brain network using blood-oxygen-level-dependent (BOLD) functional magnetic resonance imaging (fMRI) has revealed the potentials for probing brain architecture, as well as for identifying clinical biomarkers for brain diseases. In the general context of Brainnetome, this review focuses on the development of approaches for modeling and analyzing functional brain ...
Büttner Andreas - - 2012
Cocaine abuse represents a significant health issue worldwide. Besides cardiovascular complications, psychiatric and neurologic symptoms are the most common manifestations of cocaine toxicity. In cocaine abusers brain abnormalities have been shown with computed tomography (CT), magnetic resonance imaging (MRI), positron emission tomography (PET), or single photon emission computed tomography (SPECT). ...
Zuo Nianming - - 2012
Increasing evidence shows that the human brain is a highly self-organized system that shows attributes of small-worldness, hierarchy and modularity. The "connectome" was conceived several years ago to identify the underpinning physical connectivities of brain networks. The need for an integration of multi-spatial and -temporal approaches is becoming apparent. Therefore, ...
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