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Chiavaras Mary M MM 1 Department of Radiology, McMaster University, Hamilton General Hospital, Hamilton, ON, - - 2014
OBJECTIVE. The purpose of this article is to review a number of diagnostic pitfalls related to ultrasound evaluation of the hand and wrist. Such pitfalls relate to evaluation of ten-dons (extensor retinaculum, multiple tendon fascicles, tendon subluxation), inflammatory arthritis (incomplete evaluation, misinterpretation of erosions, failure to evaluate for enthesitis), carpal ...
Haggerty Ashley F AF *Division of Gynecologic Oncology, University of Pennsylvania, Philadelphia, PA; †Division of Gynecologic Oncology, Washington University of St Louis, St Louis, MO; ‡Division of Gynecologic Oncology, Fox Chase Cancer Center, Philadelphia, PA; and §Department of Radiology, University of Pennsylvania, Philadelphia, - - 2014
The aim of this study was to determine the accuracy of pelvic magnetic resonance imaging (MRI) diagnoses compared with the final pathology diagnoses for a series of women with indeterminate adnexal masses. We performed a retrospective cohort study of women who underwent pelvic MRI with a diagnosis of an adnexal ...
Thuny Franck F Département de Cardiologie, Unité Nord Insuffisance cardiaque et Valvulopathies (UNIV), Centre Hospitalier Universitaitre de Marseille, Hôpital Nord, Aix-Marseille Université, Marseille, France; Département de Cardiologie, Centre Hospitalier Universitaitre de Marseille, Hôpital de la Timone, Aix-Marseille Université, Marseille, France; URMITE, UM63, CNRS 7278, IRD 198, Inserm 1095, Faculté de Médecine, Aix-Marseille Université, Marseille, France. Electronic address: - - 2014
Infective endocarditis (IE) is among the most severe infectious disease, the prevention of which has not decreased its incidence. The age of patients and the rate of health care-associated IE have increased as a consequence of medical progress. The prevention strategies have been subjected to an important debate and nonspecific ...
Yoo Sylvia H SH Jules Stein Eye Institute, UCLA, Los Angeles, California, - - 2014
A patient was found to have a metallic foreign body in the left anterior orbit on CT imaging, but the foreign body was not evident on clinical examination. On high-resolution ultrasonography, an object was identified in the left upper eyelid; however, the typical shadow with metallic foreign bodies was not ...
Paruthikunnan Samir S Department of Radio-diagnosis and Imaging, Kasturba Medical College and Hospital, Manipal University, Manipal, 576104, Karnataka, India, - - 2014
Toxoplasmosis is a ubiquitous protozoal infection that during pregnancy commonly affects the fetus severely, with maternal infection usually being mild self-limiting. Disseminated toxoplasmosis in a healthy pregnant woman has, to the best of our knowledge, not been reported before. We present a case of disseminated toxoplasmosis involving pulmonary, central nervous ...
Dong Su-Zhen SZ Department of Radiology, Shanghai Children's Medical Center, Shanghai Jiaotong University School of Medicine, 1678 Dongfang Rd, Shanghai, 200127, - - 2014
Fetal echocardiography is the imaging modality of choice for prenatal diagnosis of congenital cardiovascular anomalies. However, echocardiography has limitations. Fetal cardiac magnetic resonance imaging (MRI) has the potential to complement US in detecting congenital cardiovascular anomalies. This article draws on our experience; it describes the transverse aortic arch view on ...
Shikha Deep D Department of Endocrinology, SUNY Downstate Medical Center, Brooklyn, - - 2014
Objective: To present a case of gestational thyrotoxicosis and hyperemesis gravidarum associated with Wernicke's encephalopathy.Methods: We present a detailed case report with the clinical, imaging and laboratory findings of the patient and review the pertinent literature.Case presentation: A 36 year old woman, at 14 weeks of gestation, was admitted to ...
Pinto Fabio F Department of Diagnostic Radiological Imaging, Marcianise Hospital, ASL Caserta, CE, Italy, - - 2014
Computed tomography (CT) still represents the preferred imaging method in the assessment of patients presenting with multiple trauma. Nevertheless, in patients with low-energy abdominal trauma, the use of CT is debated because of the possible unnecessary radiation exposure. Accordingly, conventional ultrasound (US) imaging has been increasingly employed as the initial ...
Miller Joseph J Department of Imaging, Cedars-Sinai Medical Center, Los Angeles, - - 2014
Occult hernias are symptomatic but not palpable on physical examination. This is more commonly seen with inguinal hernias. Early diagnosis and treatment of occult hernias are essential in relieving symptoms and improving patients' quality of life. To determine the effectiveness of imaging-ultrasonography (US), computed tomography (CT), and magnetic resonance imaging ...
Stidd D A DA From the Departments of Neurosurgery (D.A.S., R.M., M.C., D.K.L.), Internal Medicine (Y.D., Y.L.), and Radiology (M.D.J.), Rush University Medical Center, Chicago, Illinois; and Siemens Healthcare Sector (B.S., C.R., H.T.), Erlangen, - - 2014
Flat panel detector CT images are degraded by streak artifacts caused by radiodense implanted materials such as coils or clips. A new metal artifacts reduction prototype algorithm has been used to minimize these artifacts. The application of this new metal artifacts reduction algorithm was evaluated for flat panel detector CT ...
Singh V K VK Peripheral Nerve Injury Unit, Royal National Orthopaedic Hospital Stanmore, Brockley Hill, Stanmore, United - - 2014
PURPOSE. To evaluate the diagnostic value of magnetic resonance imaging (MRI) in thoracic outlet syndrome (TOS). METHODS. Medical records of 30 women and 10 men aged 18 to 68 (mean, 38) years who presented with unilateral (n=35) and bilateral (n=5) TOS and underwent 42 surgical decompressions of the right (n=23) ...
Křiklavová Lucie L Institute for Nanomaterials, Advanced Technology and Innovation, Technical University of Liberec, Studentská 2, 461 17 Liberec 1, Czech Republic. Electronic address: - - 2014
The aim of this study was to evaluate the impact of short-term repeated exposure to a static magnetic field (induction 370mT) on the Rhodococcus erythropolis cells. Specifically, it was ascertained the magnetic field's potential to influence degradation of a phenol substrate, cell growth and respiration activity (oxygen consumption) during substrate ...
Wang Anna M AM Laboratory of Biomedical Imaging and Signal Processing, The University of Hong Kong, Pokfulam, Hong Kong SAR, China; Department of Electrical and Electronic Engineering, The University of Hong Kong, Pokfulam, Hong Kong SAR, - - 2014
To investigate whether diffusion magnetic resonance spectroscopy (MRS) can detect the extracellular matrix (ECM) degradation during intervertebral disc degeneration (IVDD) by the increased mobility of ECM macromolecules such as proteoglycans and collagens. Fresh bovine intervertebral discs were injected with papain solution to induce ECM degradation. The apparent diffusion coefficients (ADCs), ...
Thakkar Rashmi S RS The Russell H. Morgan Department of Radiology and Radiology Science; Johns Hopkins Hospital, Baltimore, MD, United - - 2014
When pain or disability occurs after rotator cuff surgery, post-operative imaging is frequently performed. Post-operative complications and expected post-operative imaging findings in the shoulder are presented, with a focus on magnetic resonance imaging, magnetic resonance arthrography, and computed tomography arthrography. Magnetic resonance and computed tomography techniques are available to reduce ...
Egger Christine C Novartis Institutes for BioMedical Research, Analytical Sciences and Imaging, Basel, Switzerland; University of Basel, Biocenter, Basel, - - 2014
To assess whether hyaluronic acid, a building block of proteoglycans and extracellular matrix with hydrophilic characteristics, might contribute to magnetic resonance imaging (MRI)-detected proton signals elicited by bleomycin in the lung. To this end, hyaluronidase, which degrades hyaluronic acid, was administered to bleomycin-challenged animals. Fibrosis was induced by oropharyngeal aspiration ...
Kuo Hsiang-Chi HC Department of Radiation Oncology, Bronx, NY, - - 2014
To evaluate the variations of multi-lumen balloon (MLB)-based brachytherapy from simulation day to treatment day and their dosimetric impacts during accelerated partial breast irradiation (APBI). A total of 42 CT images scanned from seven patients were evaluated with regards to daily variation due to of: 1) internal uncertainty: size and ...
Ye Fei F Division of Experimental Cancer Medicine, Department of Laboratory Medicine (LABMED), Karolinska Institutet, SE-141 86 Stockholm, - - 2014
We have developed biodegradable polymeric vesicles as a nanocarrier system for multimodal bio-imaging and anticancer drug delivery. The poly(lactic-co-glycolic acid) (PLGA) vesicles were fabricated by encapsulating inorganic imaging agents of superparamagnetic iron oxide nanoparticles (SPION), manganese-doped zinc sulfide (Mn:ZnS) quantum dots (QDs) and the anticancer drug busulfan into PLGA nanoparticles ...
Bae Sungjun - - 2014
Experiments were conducted to investigate the effect of riboflavin on the reactivity of nanoscale zero-valent iron (NZVI) during three reaction cycles of carbon tetrachloride (CT) degradation. The degradation kinetics of CT by NZVI without riboflavin (0.556 ± 0.044 h-1) was 1.5 times higher than that with riboflavin (0.370 ± 0.012 ...
Suzuki Akira A Diagnostic Imaging Center, Japanese Red Cross Sendai Hospital, Miyagi, - - 2014
CT-based attenuation correction (CTAC) of myocardial SPECT images has been becoming more popular-and the application of SPECT/CT increasing-because it prevents attenuation-induced image degradation. However, CTAC can be affected by overestimation of counts caused by metals. It is possible that pacemaker, left ventricle (LV), and implantable cardioverter-defibrillator (ICD) leads have an ...
Narisawa Ayumi A Departments of - - 2014
The authors report on a 49-year-old man with a thoracic spinal dural arteriovenous shunt (dAVS) in which rupture of a varix caused intramedullary hemorrhage. In the literature, patients with a thoracic dAVS predominantly present with congestive myelopathy; however, the patient featured in this report presented without increased deep tendon reflexes ...
Goode Kevin M - - 2014
Abstract Background: The in vitro stability of a biomarker can determine whether it should be used in clinical practice where long delays between sampling and assay are common. We measured the in vitro stability of five novel biomarkers that are being evaluated for their diagnostic and/or prognostic utility in patients ...
Li Zhoubo Z Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota - - 2014
Purpose: To develop and evaluate an image-domain noise reduction method based on a modified nonlocal means (NLM) algorithm that is adaptive to local noise level of CT images and to implement this method in a time frame consistent with clinical workflow.Methods: A computationally efficient technique for local noise estimation directly ...
Landaluce Hugo H Deusto Institute of Technology (DeustoTech), University of Deusto, Bilbao 48007, Spain. - - 2014
Radio Frequency Identification (RFID) technology faces the problem of message collisions. The coexistence of tags sharing the communication channel degrades bandwidth, and increases the number of bits transmitted. The window methodology, which controls the number of bits transmitted by the tags, is applied to the collision tree (CT) protocol to ...
Yu Yeyang Y School of Information Technology and Electrical Engineering, the University of Queensland, St Lucia, Queensland, - - 2014
Compressed Sensing (CS) has been applied in dynamic Magnetic Resonance Imaging (MRI) to accelerate the data acquisition without noticeably degrading the spatial-temporal resolution. A suitable sparsity basis is one of the key components to successful CS applications. Conventionally, a multidimensional dataset in dynamic MRI is treated as a series of ...
Martinez-Ramirez Sergi S Philip J. Kistler Stroke Research Center, Massachusetts General Hospital, 175 Cambridge Street Suite 300, Boston, MA 02114, - - 2014
Cerebral microbleeds (MBs) are small chronic brain hemorrhages which are likely caused by structural abnormalities of the small vessels of the brain. Owing to the paramagnetic properties of blood degradation products, MBs can be detected in vivo by using specific magnetic resonance imaging (MRI) sequences. Over the last decades, the ...
Fieseler Michael - - 2014
Respiratory motion is known to degrade image quality in PET imaging. The necessary acquisition time of several minutes per bed position will inevitably lead to a blurring effect due to organ motion. A lot of research has been done with regards to motion correction of PET data. As full-body PET-MRI ...
Taneichi Akiyo A Department of Obstetrics and Gynecology, School of Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi 329-0498, - - 2014
A leiomyoma rarely causes disseminated intravascular coagulopathy (DIC). In the present report, we describe a case of DIC caused by leiomyoma. A 36-year-old nulliparous woman presented with hypermenorrhea and a lower abdominal mass. On magnetic resonance imaging, we detected a 14 cm uterine tumor, which was suspected to be a sarcoma. ...
Chi Alexander A Department of Radiation Oncology, Mary Babb Randolph Cancer Center, West Virginia University , Morgantown, WV , - - 2014
The improved accuracy in tumor identification with FDG-PET has led to its increased utilization in target volume delineation for radiotherapy treatment planning in the treatment of lung cancer. However, PET/CT has constantly been influenced by respiratory motion-related image degradation, which is especially prominent for small lung tumors in the peri-diaphragmatic ...
Berhanu Aaron Elias AE Department of Medicine, Brigham and Women's Hospital, Boston, Massachusetts, - - 2014
Summary Primary spontaneous cerebral spinal fluid (CSF) rhinorrhoea is a rare disease associated with female gender, obesity and empty sella syndrome. The authors describe the case of a 59-year-old woman who presented to her primary care physician with a 2-week history of drainage of a clear fluid from her right ...
Bekiesińska-Figatowska Monika M Department of Diagnostic Imaging, Institute of Mother and Child, Warsaw, - - 2014
Since 2003, very few publications have described brain examinations using neonatal MR-compatible incubator (INC). The authors present their first experience in these examinations, not limited to brain scans, with the use of an incubator equipped not only with head coil, but also with a coil designed for examinations of the ...
Vidal C M P CM Department of Restorative Dentistry, Dental Materials Area, Piracicaba Dental School, State University of Campinas, Piracicaba, - - 2013
Degradation of dentin matrix components within caries dentin has been correlated with the activity of host-derived proteases, such as matrix metalloproteases (MMPs) and cysteine cathepsins (CTs). Since this relationship has not been fully established, we hypothesized that the abundance of MMPs and CTs in caries-affected dentin must be higher than ...
Ventura Manuela M Department of Biomaterials, Radboud University Nijmegen Medical Centre, PO Box 9101, 6500 HB Nijmegen, The - - 2013
With biomimetic biomaterials, like calcium phosphate cements (CPCs), non-invasive assessment of tissue regeneration is challenging. This study describes a theranostic agent (TA) to simultaneously enhance both imaging and osteogenic properties of such a bone substitute material. For this purpose, mesoporous silica beads were produced containing an iron oxide core to ...
Lavdas Eleftherios E Technological Educational Institute of Athens, Radiology Department, Athens, - - 2013
The purpose of this retrospective clinical study was to identify and evaluate the presence and frequency of T2 FLAIR artifacts on brain MRI studies performed at 3 T. We reviewed axial T2 FLAIR images in 200 consecutive unremarkable brain MRI studies performed at 3 T. All studies were reviewed for ...
Schleyer Paul J - - 2013
Respiratory motion affects cardiac PET-computed tomography (CT) imaging by reducing attenuation correction (AC) accuracy and by introducing blur. The aim of this study was to compare three approaches for reducing motion-induced AC errors and evaluate the inclusion of respiratory motion correction. AC with a helical CT was compared with averaged ...
Glick Stephen J - - 2013
A number of research groups have been investigating the use of dedicated breast computerized tomography (CT). Preliminary results have been encouraging, suggesting an improved visualization of masses on breast CT as compared to conventional mammography. Nonetheless, there are many challenges to overcome before breast CT can become a routine clinical ...
Camenisch Colette C - - 2013
Macrolane is a biocompatible, biodegradable, injectable stabilized hyaluronic acid-based gel of nonanimal origin manufactured using the nonanimal stabilized hyaluronic acid technology. This was a substudy to evaluate localization, displacement, and degradation of the gel when used for volume restoration and shaping of the buttocks. Subjects aged 20 years or older ...
Tonkopi Elena - - 2013
OBJECTIVE. The objective of this study was to optimize CT protocols for whole-body PET/CT by reducing radiation dose while minimizing effects on image quality. MATERIALS AND METHODS. Before protocol optimization, a survey of 140 consecutive patients was conducted to establish the baseline dose from a whole-body PET/CT examination. Another sample ...
Nappi Carmela - - 2013
Simultaneous PET/MRI is an emerging technique combining two powerful imaging modalities in a single device. The wide variety of available tracers for perfusion and metabolic studies and the high sensitivity of positron emission tomography (PET) combined with the high spatial resolution and soft tissue contrast of magnetic resonance imaging (MRI) ...
Del Gaizo Andrew J - - 2013
Computed tomographic (CT) enterography is a diagnostic examination that is increasingly being used to evaluate disorders of the small bowel. An undesirable consequence of CT, however, is patient exposure to ionizing radiation. This is of particular concern with CT enterography because patients tend to be young and require numerous follow-up ...
Zhang Yunwan - - 2013
Ultra-low-dose x-ray computed tomography (CT) imaging is needed in CT fields. Through a scan protocol by lowering the milliampere-seconds (mAs) and reducing the number of projections per rotation around the body, we can realize low-dose CT imaging. However, the resulting noisy and insufficient measurements will unavoidably cause the degradation of ...
Kaplan Alex - - 2013
We present an optical mode solver for a whispering gallery resonator coupled to an adjacent arbitrary shaped nano-particle that breaks the axial symmetry of the resonator. Such a hybrid resonator-nanoparticle is similar to what was recently used for bio-detection and for field enhancement. We demonstrate our solver by parametrically studying ...
Di Gregorio Enza - - 2013
Commercial Gd-containing complexes are often used as MRI reporters in cellular labeling procedures as they are internalized into endosomes by pinocytosis. A methodology has been applied to assess the relative stability of three commercial Gd contrast agents following cellular uptake in fibroblasts and macrophages. It has been found that the ...
Yitta Silaja - - 2013
OBJECTIVE. This article will discuss routine 1.5 and 3 T MRI of the breast as well as illustrate several examples of patient-related and technical artifacts one might encounter. Suggestions to help eliminate these artifacts and optimize images will be provided. CONCLUSION. Artifacts seen on breast MR images can degrade image ...
Hani Ahmad Fadzil Mohd - - 2013
Osteoarthritis is a common joint disorder that is most prevalent in the knee joint. Knee osteoarthritis (OA) can be characterized by the gradual loss of articular cartilage (AC). Formation of lesion, fissures and cracks on the cartilage surface has been associated with degenerative AC and can be measured by morphological ...
Matsuki Mitsuru - - 2013
BACKGROUND: While CT is widely used in medical practice, a substantial source of radiation exposure is associated with an increased lifetime risk of cancer. Therefore, concerns to dose reduction in CT examinations are increasing and an iterative reconstruction algorithm, which allow for dose reduction by compensating image noise in the ...
Morsbach Fabian - - 2013
PURPOSE: To determine the value of a metal artefact reduction (MAR) algorithm with iterative reconstructions for dental hardware in carotid CT angiography. METHODS: Twenty-four patients (six of which were women; mean age 70 ± 12 years) with dental hardware undergoing carotid CT angiography were included. Datasets were reconstructed with filtered back projection (FBP) ...
Korn A - - 2013
PURPOSE: Iterative reconstruction has recently been revisited as a promising concept for substantial CT dose reduction. The purpose of this study was to assess the potential benefit of sinogram affirmed iterative reconstruction (SAFIRE) in head CT by comparing objective and subjective image quality at reduced tube current with standard dose ...
Hong Key Jo - - 2013
Purpose: The aim of this study was to develop a prototype magnetic resonance (MR)-compatible positron emission tomography (PET) that can be inserted into a MR imager and that allows simultaneous PET and MR imaging of the human brain. This paper reports the initial results of the authors' prototype brain PET ...
Rakoczy Megan M DLCSPM 4-5, National Defence, 101 Colonel By Dr., Ottawa, Canada, K1A 0K2. - - 2013
The accuracy of computer-aided diagnosis (CAD) for early detection and classification of breast cancer in dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) is dependent upon the features used by the CAD classifier. Here, we show that fast orthogonal search (FOS), which provides a more efficient iterative manner of computing stepwise regression ...
Kim Jongsik J University of Illinois at Urbana-Champaign, Beckman Institute for Advanced Science and Technology, 405 North Mathews Avenue, Urbana, Illinois 61801, - - 2013
Magnetomotive optical coherence tomography (MM-OCT) is a functional extension of OCT which utilizes magnetically responsive materials that are modulated by an external magnetic field for contrast enhancement and for elastography to assess the structural and viscoelastic properties of the surrounding tissues. Traditionally, magnetomotive contrast relies on the interaction between the ...
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