Search Results
Results 1 - 50 of 963
1 2 3 4 5 6 7 8 9 10 >
Diop A D AD Clermont-Ferrand University Hospital, Estaing University Hospital, Department of Radiology and Medical Imaging, 1, place Lucie-Aubrac, 63003 Clermont-Ferrand cedex 1, - - 2014
Invasive peritoneal disease includes more than just peritoneal carcinomatosis. Although this is the most common aetiology, especially when a primary is found, other conditions may be responsible for peritoneal invasion. A rigorous analysis of CT features taken together with the clinical and biological context usually allows the main differential diagnoses, ...
Armao Diane D Department of Radiology and Department of Pathology and Laboratory Medicine, UNC Health Care System, Chapel Hill, NC, USA; Department of Physician Assistant Studies, Elon University, Elon, NC, USA. - - 2014
Concerns have increased about the potential health risks of ionizing radiation from computed tomography (CT) scans. This paper discusses the biological effects of radiation, describes research findings related to CT use, cites strategies for radiation dose reduction, and emphasizes the need to be judicious in ordering CT scans for children.
Hedgire Sandeep S SS Department of Abdominal Imaging and Intervention, Massachusetts General Hospital 55 Fruit St, Boston, 02114 MA, USA. Electronic address: - - 2014
The purpose of this study was to assess the attenuation characteristics of the Alloderm Biologic Mesh Spacer (ABMS) in the abdomen and pelvis. Of nine patients with ABMS, five underwent multidetector computed tomographic scans at 1, 4, and 7 months postsurgery. Two patients underwent positron emission tomography-computed tomography (PET-CT). The ...
Brioli Annamaria A Centre for Myeloma Research, Division of Molecular Pathology, The Institute of Cancer Research, London, - - 2014
The 14th International Myeloma Workshop Kyoto, Japan, 3-7 April 2013 The International Myeloma Workshop (IMW) is a biannual meeting that gathers experts in multiple myeloma (MM) from all over the world and scientists interested in clinical and biological aspects of myeloma. The 2013 IMW was held in Kyoto, Japan and ...
Li Junfeng J Department of Radiology, Heping Hospital Affiliated to Changzhi Medical College, No. 110, Yan'an Road (South), Changzhi City, Shanxi Province, China. Electronic address: - - 2014
Triple-negative breast cancer (TNBC), which characterized by distinct biological and clinical pathological features, has a worse prognosis because the lack of effective therapeutic targets. Breast MR is the most accurate imaging modality for diagnosis of breast cancer currently. MR imaging recognition could assist in diagnosis, pretreatment planning and prognosis evaluation ...
Yeo Dong-Myung DM Department of Radiology, Seoul St. Mary's Hospital, Catholic University of Korea, Seoul, Republic of - - 2013
To investigate whether quantitative parameters derived from dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) are correlated with angiogenesis and biologic aggressiveness of rectal cancer. A total of 46 patients with rectal cancer underwent DCE-MRI. Using a two-compartmental model, quantitative parameters (K(trans) , kep , ve , and iAUC) were calculated from ...
Stramare Roberto R Section of Radiology, Department of Medicine, University of Padua, Via Giustiniani 2, 35128, Padua, - - 2013
This study was done to propose a study protocol for patients with rheumatoid arthritis (RA) treated with biological agents, by evaluating the contribution of contrast-enhanced magnetic resonance (CE-MR) imaging, a software programme that calculates the volume of synovitis on CE-MR images, and contrast-enhanced ultrasound (CEUS). Sixteen patients with RA receiving ...
Maffione Anna Margherita - - 2013
FDG PET/CT has a recognized high predictive power to assess the response to neoadjuvant chemoradiation therapy (CRT) in patients affected by locally advanced rectal cancer (LARC), but a relatively high number of false-positive findings decrease its specificity: with the aim to solve this problem, a new method of imaging analysis ...
Doura Tomohiro - - 2013
We report a new strategy for designing a signal off-to-on-type (19)F MRI chemical probe that operates in biological environments. The present strategy is based on the control of adherence of a (19)F MRI chemical probe to certain blood proteins, accompanied by a change in transverse relaxation time of (19)F nuclei.
Naumann H D - - 2013
The effect of molecular weight of condensed tannins (CT) from a variety of warm-season perennial legumes commonly consumed by sheep and goats on anthelmintic activity has not been previously explored. The objectives of this study were to determine if molecular weight of CT from warm-season perennial legumes could predict the ...
Cao Binrui - - 2013
Magnetic nanoparticles (MNPs), which can be aligned along a magnetic field, were applied to generate large-scale assemblies of biological nanofibers with the orientation of the constituent nanofibers defined by the applied magnetic field. When decorated with MNPs, these nanofibers could be guided by the external magnetic field to become oriented ...
Gebhardt P - - 2013
Positron emission tomography/computer tomography (PET/CT) is an established method in preclinical research in small animal disease models and the clinical diagnosis of cancer. It combines functional information of the positron-emitting biomarker with the anatomical data obtained from the CT image. Thus, it allows for 4D in vivo investigation of biological ...
Romero-Aburto Rebeca - - 2013
Fluorinated graphene oxide (FGO) is reported for the first time as a magnetically responsive drug carrier that can serve both as a magnetic resonance imaging (MRI) and photoacoustic contrast agent, under preclinical settings, and as a type of photothermal therapy. Its hydrophilic nature facilitates biocompatibility. FGO as a broad wavelength ...
Ellingson Benjamin M - - 2013
To outline the pathogenesis of cervical spondylotic myelopathy (CSM), the correlative abnormalities observed on standard magnetic resonance imaging (MRI), the biological implications and current status of diffusion tensor imaging (DTI), and MR spectroscopy (MRS) as clinical tools, and future directions of MR technology in the management of CSM patients. A ...
Belloli Sara - - 2013
The prognosis of malignant gliomas remains largely unsatisfactory for the intrinsic characteristics of the pathology and for the delayed diagnosis. Multimodal imaging based on PET and MRI may assess the dynamics of disease onset and progression allowing the validation of preclinical models of glioblastoma multiforme (GBM). The aim of this ...
Leibfarth Sara - - 2013
Background. Combined positron emission tomography (PET)/magnetic resonance imaging (MRI) is highly promising for biologically individualized radiotherapy (RT). Hence, the purpose of this work was to develop an accurate and robust registration strategy to integrate combined PET/MR data into RT treatment planning. Material and methods. Eight patient datasets consisting of an ...
Niyazi Maximilian - - 2013
This study compared manually delineated gross tumour volume (GTV) and automatically generated biological tumour volume (BTV) based on fluoro-deoxy-glucose (FDG) positron emission tomography (PET)/CT to assess the robustness of predefined PET algorithms for radiotherapy (RT) planning in routine clinical practice. RT-planning data from 20 consecutive patients (lung- (40%), oesophageal- (25%), ...
Giurazza F - - 2013
Together with race, stature and age, sex is a main component of the biological identity. Thanks to its proportional correlation with parts of the human body, sex can be evaluated form the skeleton.
Liu Guocai - - 2013
To more accurately and precisely delineate a biologic target volume (BTV) for the positron emission tomography (PET)-guided radiotherapy treatment planning, we proposed a novel Hierarchical Mumford-Shah Vector Model (HMSMv), where the image-vector was composed of the molecular biological characteristics such as contrast, busyness and the standard uptake value (SUV) of ...
Sham E - - 2013
A range of nuclear magnetic resonance (NMR) techniques are employed to provide novel, non-invasive measurements of both the structure and transport properties of porous media following a biologically mediated calcite precipitation reaction. Both a model glass bead pack and a sandstone rock core were considered. Structure was probed using magnetic ...
Manfredi Riccardo - - 2013
To describe MR imaging features of non-hyperfunctioning neuroendocrine pancreatic tumours by comparing them to histopathology and to determine the accuracy of MR imaging in predicting biological behaviour. After institutional review board approval, we retrospectively reviewed 45 patients with pathologically proven NF-NET of the pancreas and ≥1 preoperative MR/MRCP examinations. Of ...
Chen Wengen - - 2013
A significant majority of atherosclerotic plaque ruptures occur in coronary arteries exhibiting none or only modest luminal narrowing on coronary angiography. Emerging data suggest the biological composition of an atherosclerotic plaque (vulnerability to rupture) rather than its degree of stenosis or size is the major determinants for acute clinical events. ...
Ramirez-Giraldo Juan C - - 2013
OBJECTIVE. The purpose of this study is to evaluate radiation dose reduction strategies in perfusion CT by using a biologic phantom. MATERIALS AND METHODS. A formalin-preserved porcine liver was submerged in a 32-cm-wide acrylic phantom filled with water. The portal vein was connected to a continuous flow pump. The phantom ...
Lee Jae-Hyun - - 2013
Various bio-medical applications of magnetic nanoparticles have been explored during the past few decades. As tools that hold great potential for advancing biological sciences, magnetic nanoparticles have been used as platform materials for enhanced magnetic resonance imaging (MRI) agents, biological separation and magnetic drug delivery systems, and magnetic hyperthermia treatment. ...
Leung Katherine - - 2013
Pheochromocytomas are relatively rare neuroendocrine tumors of the adrenal medulla. Their variable clinical presentation and biologic behavior often make accurate diagnosis challenging. A variable spectrum of imaging appearances--some of which may also mimic other diseases--has been recognized. This article reviews the epidemiology; associations; and clinical, biochemical, pathologic, and multimodality imaging ...
Wakefield Jennie C JC Cancer Research UK and EPSRC Cancer Imaging Centre, Institute of Cancer Research and Royal Marsden NHS Foundation Trust, DownsRd, Sutton, SM2 5PT, United - - 2013
Functional MR techniques report on a variety of biologic features of tumors: dynamic contrast-enhanced, diffusion-weighted, and intrinsic susceptibility-weighted MRI and MR spectroscopy reflect, at a simplistic level, vascularity, cellularity, hypoxic status, and metabolism, respectively. This article reviews the evidence for each of the functional MR readouts to determine these clinical ...
Psimadas Dimitrios - - 2013
Abstract The application of combined diagnosis and therapy through nanotechnology applications is attracting increasing attention worldwide. Polymeric self-assembled nanoparticles (NPs) have been studied for this purpose. Micelles and vesicles with or without a magnetic core can efficiently carry diagnostic and/or therapeutic agents to a desired target. The biological behavior of ...
Naswa Niraj - - 2013
Because of the increasing clinical importance of gastric carcinoids and the difficulty in diagnosing them, the need for non-invasive diagnostic methods is growing. Currently, the only reliable method is upper gastrointestinal endoscopy with biopsy. We report the case of a 32-year-old male where a combination of functional imaging studies ((18)F-fluorodeoxyglucose-positron ...
Phinikaridou Alkystis - - 2013
Despite advances in prevention, risk assessment and treatment, coronary artery disease (CAD) remains the leading cause of morbidity and mortality in Western countries. The lion's share is due to acute coronary syndromes (ACS), which are predominantly triggered by plaque rupture or erosion and subsequent coronary thrombosis. As the majority of ...
Shumei Ma - - 2012
Abstract Purpose: With the widespread use of computed tomography (CT), the risks of low-dose radiation from CT have been increasingly highlighted. This study aims to illustrate the CT -induced biological effects and analyze the potential beneficial or harmful outcomes so as to provide radiologists reasonable advice on CT usage. Materials ...
Mocharla Vani P - - 2012
CA II makes a good PET: Discovering positron emission tomography (PET) probes with high target affinities is challenging. PET probe discovery using in situ click chemistry uses (19) F-bearing fragments as (18) F surrogates. This ensures that the lead hits and PET probes have equivalent chemical or biological characteristics, making PET probe discovery ...
Pizzuti L M - - 2012
Imaging techniques, such as ultrasound imaging (US), computed tomography (CT), positron emission tomography-CT (PET-CT) or PET-magnetic resonance imaging (MRI), are highly accurate procedure in the lymph node enlargement detection, but none of them has the same sensitivity in the biological definition and in the cause of enlargement identification. Therefore, a ...
Adan Ana - - 2012
The interest in the systematic study of the circadian typology (CT) is relatively recent and has developed rapidly in the two last decades. All the existing data suggest that this individual difference affects our biological and psychological functioning, not only in health, but also in disease. In the present study, ...
Kobayashi Katsuhiro - - 2012
Positron emission tomography (PET)/computed tomography (CT) with fluorine 18 fluorodeoxyglucose (FDG) is increasingly used in evaluation of oncology patients. Because PET/CT can demonstrate malignancy before morphologic changes are evident, application of PET/CT information to image-guided biopsy can facilitate early histologic diagnosis and staging. However, because FDG uptake is not specific ...
Okada Yumiko - - 2012
The aim of our study was to examine the usefulness of PET with C-methionine (MET) and F-fluorodeoxyglucose (FDG) in the differentiation of glioblastoma multiforme (GBM) and intracranial diffuse large B-cell lymphoma (DLBCL). We evaluated 22 patients retrospectively with an enhancing brain tumor on MRI, including 15 GBM and 7 DLBCL, ...
Gs Boasquevisque - - 2012
ABSTRACT: In neurolymphomatosis, malignant lymphocytes infiltrate the peripheral nervous system in the presence of a known or unknown hematological malignancy. This report describes the findings of diffusion-weighted MRI and F-FDG PET/CT in a 65-year-old man with hoarseness. Results revealed a mass with restricted diffusion on diffusion-weighted imaging in the right ...
Tsang Hailey Hoi Ching - - 2012
ABSTRACT: A 62-year-old woman was in remission from previously treated stage IV diffuse large B-cell lymphoma with cranial involvement. She presented with new-onset hoarseness of voice and choking; MRI of the brain showed disease recurrence in the left cavernous sinus. She was subsequently referred for F-FDG PET/CT with contrast for ...
Jouan Youenn - - 2012
Ulcerative colitis (UC) is an inflammatory bowel disease that can on rare occasions affect the respiratory tract. We report the case of a 32-year-old woman suffering from UC, for whom 2-deoxy-2[(18)F]fluoro-D: -glucose positron emission tomography ((18)F-FDG PET) was useful, both for diagnosis and management of tracheal involvement. She presented with ...
Hamilton Roisin - - 2012
A 74 year old man presented with fatigue, weight loss, fever, night sweats and unsteady gait. Full blood count showed Hb 46g/dl, white cell count 11.70x10(9) /l, neutrophils of 7.87x10(9) /l, platelets 100x10(9) /l. Serum lactate dehydrogenase (LDH) and ferritin were elevated at 778U/L (NR <260) and 1775 ng/ml (NR ...
Uematsu Takayoshi - - 2012
Subcutaneous panniculitis-like T-cell lymphoma (SPTCL) is a rare subtype of cutaneous lymphoma, which is characterized by infiltration of neoplastic cytotoxic T cells into the subcutaneous tissue. We here report the case of a 66-year-old woman with SPTCL of the breast, which is a very uncommon location. Multiple suspicious irregular small ...
Zukotynski Katherine - - 2012
PET/CT with (18)F-FDG is a powerful tool to evaluate patients with hematologic malignancy or to assess the burden of metastatic disease from solid tumors. Metabolically active renal pathology associated with lymphoma, leukemia, or metastatic disease can be missed without close attention to both the PET and CT portions of the ...
Jankowski Pawel P - - 2012
The authors describe here a unique case of contiguous, synchronous meningioma and lymphoma in the spinal column. Both tumors were present at the same vertebral level, one intradural and the other extradural. A patient presented with bilateral leg pain, acute weakness, and sensory loss in the lower extremities. Magnetic resonance ...
Buchbender Christian - - 2012
With integrated whole-body PET/MRI, a novel metabolic-anatomic imaging technique recently has been introduced into clinical practice. This review addresses PET/MRI of bone tumors, soft-tissue sarcoma, melanoma, and lymphoma. If PET/MRI literature is not yet available for some types of tumors, potential indications are based on available PET/CT and MRI data. ...
Buchalla Rüdiger - - 2012
Objective Implementation of a new neuronavigation system in the department included the opportunity to change the brain biopsy procedures from a frame-based system to a frameless system-the BrainLAB® VarioGuide. We report our first 20 consecutive procedures within 2 years, analyzing the effectiveness of this new tool.Patients, Materials, and Methods 15 ...
Galldiks Norbert - - 2012
AbstractIn patients with recurrent glioblastoma multiforme (GBM), local minimally invasive treatment modalities have gained increasing interest recently because they are associated with fewer side effects than open surgery. For example, local tumor coagulation by laser-induced interstitial thermotherapy (LITT) is such a minimally invasive technique. We monitored the metabolic effects of ...
Rosenkrantz Andrew B - - 2012
The objective of our study was to retrospectively compare the MRI features of retroperitoneal fibrosis (RPF) and lymphoma presenting as confluent retroperitoneal soft tissue. MRI studies of 31 patients (18 men, 13 women; mean age, 58.4 ± 15.8 [SD] years; 22 with RPF and nine with lymphoma) were evaluated. Two ...
Nakatani Koya - - 2012
The usefulness of F fluorodeoxyglucose (FDG) positron emission tomography (PET) in pediatric Hodgkin lymphoma (p-HL) has been well demonstrated; however, pediatric non-Hodgkin lymphoma (p-NHL) has distinct characteristics from p-HL and adult NHL. We assessed roles of FDG PET in p-NHL. Nineteen patients with p-NHL underwent 80 scans. Scans for staging ...
Yapar Ali Fuat - - 2012
ABSTRACT: A 38-year-old man presented with declining appetite and progressive abdominal distention. Abdominal ultrasonography revealed omental and bowel wall thickening. Histopathologic examination showed a high-grade lymphoblastic Burkitt-like B-cell lymphoma. F fluorodeoxyglucose positron emission tomography/computed tomography images showed diffusely increased metabolic activity in the thickened omentum, intestines, mesentery, and peritoneum (omental ...
Stikova E - - 2012
(Full text is available at http://www.manu.edu.mk/prilozi). This paper provides an overview of the published literature regarding magnetic resonance imaging (MRI) safety. It gives basic information about the electromagnetic fields that are generated during the MRI diagnostic procedure, followed by a description of the biological effects of those fields on humans. ...
García-Álvarez Sheila M - - 2012
ABSTRACT:: In this study, the case of a 58-year-old man with a 2-month history of left chin paresthesia with difficulty swallowing and chewing, and dysphonia is reported. He had an absence of the gag reflex, unilateral palatal palsy and deviation of the tongue upon attempted protrusion with unilateral atrophy. Magnetic ...
1 2 3 4 5 6 7 8 9 10 >