Search Results
Results 251 - 300 of 1314
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Tonolini Massimo - - 2012
Splenic rupture with hemoperitoneum represents a life-threatening surgical emergency. Malaria should be highly suspected as the probable underlying disease in returning travellers, expatriates, or recent immigrants from endemic countries. Malarial complications involving the spleen occur even with appropriate prophylaxis or during antimalarial therapy. Among them, splenic infarction has a favourable ...
Baum Richard P - - 2012
The acronym THERANOSTICS epitomizes the inseparability of diagnosis and therapy, the pillars of medicine and takes into account personalized management of disease for a specific patient. Molecular phenotypes of neoplasms can be determined by molecular imaging with specific probes using positron emission tomography (PET), single photon emission computed tomography (SPECT), ...
Morris Carol D - - 2012
There is considerable overlap in the clinical and imaging presentation of general orthopaedic conditions and musculoskeletal neoplasms. At centers that treat orthopaedic oncologic conditions, it is not uncommon to see patients with spine and extremity tumors previously treated for presumed general orthopaedic ailments. It is important for orthopaedic surgeons to ...
Thorwarth D - - 2012
This work addresses the clinical adoption of FDG-PET/CT for image-guided radiation therapy planning (RTP). As such, important technical and methodological aspects of PET/CT-based RTP are reviewed and practical recommendations are given for routine patient management and clinical studies. First, recent developments in PET/CT hardware that are relevant to RTP are ...
Basu Sandip - - 2012
Behavioral heterogeneity within a given patient cohort has been a major challenge in clinical practice and is probably most prominently observed in the field of oncology. This has been the prime impetus of the cutting-edge preclinical and clinical research studies over recent times, many of which seek to further stratify ...
Tsuji Yoshihisa - - 2012
Early intensive care for severe acute pancreatitis is essential for improving SAP mortality rates. However, intensive therapies for SAP are often delayed because there is no ideal way to accurately evaluate severity in the early stages. Currently, perfusion CT has been shown useful to predict prognosis of SAP in the ...
Maksymowych Walter P - - 2012
Demonstration of an association between inflammation and spinal ankylosis has been challenging. Until the advent of MRI, prospective study was not possible due to inaccessibility of tissue. Recent studies using MRI have described an association between the presence of bone edema at vertebral corners on MRI and the subsequent development ...
Kostkiewicz Magdalena - - 2012
The paper presents clinical abilities of PET/CT technique in the diagnostics of coronary heart disease. Clinical value and limitations of SPECT, PET and CT methods, performed separately were discussed. Fusion systems technique was presented and its value as a method used for diagnostics and assessment of prognosis in ischaemic heart ...
Hijnen Nicole M - - 2012
Purpose: We report on the design, performance, and specifications of a dedicated set-up for the treatment of rats on a clinical magnetic resonance high intensity focused ultrasound (MR-HIFU) system. Materials and methods: The small animal HIFU-compatible 4-channel MR receiver volume coil and animal support were designed as add-on to a ...
Ley Sebastian - - 2012
Lung perfusion is one of the key components of oxygenation. It is hampered in pulmonary arterial diseases and secondary due to parenchymal diseases. Assessment is frequently required during the workup of a patient for either of these disease categories. This review provides insight into imaging techniques, qualitative and quantitative evaluation, ...
Vorobiof Gabriel - - 2012
Coronary CT angiography is a rapidly growing technique that offers distinct advantages over traditional imaging techniques. However, because of rapid growth of this technique, radiation dose safety has been placed under the spotlight. There are several main determinants of total radiation dose, and these are outlined in this review. Integration ...
Ripollés Tomás - - 2011
BACKGROUND: Recent meta-analysis has demonstrated no significant differences in diagnostic accuracy among different imaging techniques (US, MRI and CT) in the evaluation of Crohn's disease (CD). High-resolution bowel ultrasound has emerged as an alternative imaging technique for the diagnosis and follow-up of patients with CD, being as accurate as CT ...
Shimao Daisuke - - 2011
This study was performed to introduce and evaluate the potential of kinematic magnetic resonance imaging (KMRI) using a high-field open-magnet magnetic resonance (MR) system. We attempted to perform KMRI of healthy volunteers' lumbar spine and knee in the lateral position and ankle in the supine position utilizing the superconducting, horizontally ...
Costo Sylvie - - 2011
Fifteen months after implantation of a Jarvik 2000 left ventricle assistance device, a 60-year-old man developed infection at the percutaneous retroauricular skull-mounted pedestal. PET/CT demonstrated hypermetabolism in the left cutaneous retroauricular pedestal, on the thoracic internal cable, and in the left lung. A second F-18 FDG PET/CT performed after 3 ...
Upadhyay N - - 2011
MRI using T(1) weighted, T(2) weighted and gadolinium-enhanced sequences plays a central clinical role in diagnosis, characterisation, surveillance and therapeutic monitoring of gliomas. Such conventional MRI protocols provide high resolution multiplanar structural information, and substantially improved tissue characterisation compared with CT. However, the MRI signal lacks biological specificity, e.g. T(2) ...
Chiewvit Pipat - - 2011
Cerebral venous thrombosis is increasing common disease in daily practice with sharing clinical nonspecific symptoms. This disorder is potentially lethal but treatable, oftenly it was overlooked in both clinical and radiologic in routine practice. Whenever, clinical suspected, prompt investigation by noninvasive imaging Magnetic resonance (MR) or advanced modilities such as ...
Ferguson Berrylin J - - 2011
Background. A prolonged course of antibiotic therapy is often initiated for chronic rhinosinusitis (CRS) based on symptomatology. We examined differences in clinical manifestations and underlying conditions in patients with symptoms typical for CRS. CT scan abnormality of the sinuses was the gold standard for diagnosis of CRS.Methods. We performed a prospective observational ...
Hashimoto Tsuyoshi - - 2011
In this report, we describe a case of Weil disease. Chest x-ray and computed tomography (CT) findings showed temporary deterioration 1 day after the initiation of antibiotic treatment, and high-resolution CT findings with the patient's physical findings made us suspect pulmonary alveolar hemorrhage (PAH). We believed that the PAH had ...
Zhou Jinyuan J Division of MRI Research, Department of Radiology and Radiological Sciences, Johns Hopkins University School of Medicine, Baltimore, MD 21287, - - 2011
It has been proposed that the spatial mismatch between deficits on perfusion-weighted imaging (PWI) and diffusion-weighted imaging (DWI) in MRI can be used to decide regarding thrombolytic treatment in acute stroke. However, uncertainty remains about the meaning and reversibility of the perfusion deficit and even part of the diffusion deficit. ...
Tan York Kiat - - 2012
Magnetic resonance imaging (MRI) has added a new dimension to the study of osteoarthritis, a long-known degenerative joint disease with limited therapeutic options. It has advanced our understanding of joint pathophysiology and identifying that osteoarthritis as a simple 'wear and tear' process of the articular cartilage has indeed become a ...
Agarwal Vikas - - 2011
Pyomyositis is the primary infection of the skeletal muscle. It is common in the tropics, but is increasingly being reported worldwide. It can affect immunocompromised and immunocompetent individuals. Staphylococcus aureus is the most common causative organism. Muscle histology and its culture remain the gold standard for diagnosis. However, among noninvasive ...
Leung Randy - - 2011
Advances in cone beam computed tomography (CBCT) technology have allowed for reduction in radiation dosages as well as the miniaturization of CT scanner units. This has given rise to new applications for CT scanning, including point-of-care (POC) in-office and intraoperative applications. A review of recent changes to radiological modalities as ...
Frullano Luca - - 2011
The development of gadolinium chelators that can be easily and readily linked to various substrates is of primary importance for the development high relaxation efficiency and/or targeted magnetic resonance imaging (MRI) contrast agents. Over the last 25 years a large number of bifunctional chelators have been prepared. For the most ...
Dean Deyle Gail - - 2011
This clinical perspective presents an overview of current and potential uses for magnetic resonance imaging (MRI) in musculoskeletal practice. Clinical practice guidelines and current evidence for improved outcomes will help providers determine the situations when an MRI is indicated. The advanced competency standard of examination used by physical therapists will ...
Conley David - - 2011
Point-of-care computed tomography (POC-CT) has become more feasible since the introduction of smaller imaging devices that deliver lower radiation doses. As the availability of this modality continues to increase, its impact on diagnostic and therapeutic algorithms in patients with chronic rhinosinusitis (CRS) must be evaluated. We conducted a study of ...
Chen Chih-Yi - - 2011
Complete agenesis of the bladder and urethra is an extremely rare congenital anomaly and most of these patients are stillborn or die during infancy. We report the case of a 1-month-old female infant with bladder and urethral agenesis who presented with bilateral dilated and tortuous ectopic ureters draining into the ...
Park Seong-Hyun - - 2011
The purpose of this study was to evaluate whether (18)F-fluorodeoxyglucose positron emission tomography (FDG-PET) can be used to assess the therapeutic response of brain abscess. A study was conducted on 10 consecutive patients with brain abscess. Magnetic resonance imaging (MRI) with diffuse-weighted imaging (DWI) was performed at 3 and 6 ...
Guimarães F S M - - 2011
In spintronics, the ability to transport magnetic information often depends on the existence of a spin current traveling between two different magnetic objects acting as the source and probe. A large fraction of this information never reaches the probe and is lost because the spin current tends to travel omnidirectionally. We ...
Sieroń Dominik - - 2011
Uterine fibroids are the most common benign female tumours during reproductive age. The traditional treatment for this condition is typically hysterectomy. However, there are new technologies on the rise, such as Uterine Artery Embolisation and Magnetic Resonance-guided Focused Ultrasound which are directed towards a minimally invasive or even noninvasive treatment ...
Chan Rs - - 2011
Radiofrequency ablation (RFA) therapy is recognised as a safe and effective treatment option for osteoid osteoma. This case report describes a 27-year-old man who underwent computed tomography (CT)-guided percutaneous RFA for a femoral osteoid osteoma, which was diagnosed based on his clinical presentation and CT findings. The patient developed worsening ...
Forney Michael C - - 2011
ABSTRACT: As the treatment of inflammatory arthropathies has advanced with new therapies that can slow or even halt the development of disabling disease, early and accurate diagnosis has become imperative. Magnetic resonance (MR) imaging has proved to be very sensitive in the detection of erosions, but more importantly, it can ...
Paiva Joseph - - 2011
Adjacent calvarial hyperostosis is commonly used to aid in the radiological diagnosis of a meningioma. While occasionally reported in dural non-Hodgkin's lymphoma (NHL), adjacent calvarial hyperostosis has not been reported with systemic presentation of Hodgkin's lymphoma (HL). We report the first patient with systemic HL presenting as an extra-axial mass ...
Menichetti L - - 2011
The present study focuses on a micro-PET/CT application to be used for experimental Boron Neutron Capture Therapy (BNCT), which integrates, in the same frame, micro-CT derived anatomy and PET radiotracer distribution. Preliminary results have demonstrated that (18)F-fluoroethyl-tyrosine (FET)/PET allows the identification of the extent of cerebral lesions in F98 tumor ...
Urquhart Donna M - - 2011
: Although several studies have examined the relationship between physical activity and knee osteoarthritis, the effect of physical activity on knee joint health is unclear. The aim of this systematic review was to examine the relationships between physical activity and individual joint structures at the knee. : Computer-aided searches were ...
Sanchez Joaquin - - 2011
After De΄s pivotal demonstration in 1959 of a diarrhoeogenic exo-enterotoxin in cell-free culture filtrates from Vibrio cholerae (of classical biotype), much insight has been gained about cholera toxin (CT), which is arguably now the best known of all microbial toxins. The subunit structure and function of CT, its receptor (the ...
Cowell Gordon W - - 2011
The authors report a case of portal vein thrombosis, with no underlying malignant cause identified, which was initially detected by fludeoxyglucose positron emission tomography/CT (FDG PET/CT) and subsequently confirmed by both contrast enhanced CT and MRI. The multimodality imaging findings are outlined, the potential clinical implications discussed and note made ...
Bulte Jeff W M - - 2011
Magnetic resonance imaging (MRI) cell tracking has become an important non-invasive technique to interrogate the fate of cells upon transplantation. At least 6 clinical trials have been published at the end of 2010, all of which have shown that real-time monitoring of the injection procedure, initial engraftment, and short-term biodistribution ...
Lin Michelle I - - 2011
Pituitary abscess is a rare but potentially life-threatening infectious process. Diagnosis is challenging as symptoms are non-specific and signs of infection may be absent. We report the case of a previously healthy 17-year-old male who presented with worsening headaches, polyuria, polydipsia and no clinical signs of infection. On evaluation, he ...
Buck Florian M - - 2011
To determine the accuracy of ultrasonography (US) in the evaluation of degenerative changes in the distal radioulnar joint (DRUJ). Ten cadaveric specimens were obtained. US evaluation of cartilage degeneration and thickness was performed by two independent and blinded readers (R1 and R2). Gross anatomy and MR arthrography evaluated by two ...
Hori Junji - - 2010
The purpose of this study was to investigate the chondrogenic potential of magnetically labeled synovium-derived cells (M-SDCs) and examine whether M-SDCs could repair the articular cartilage using an intra-articular magnet after delivery to the lesion. Synovium-derived cells (SDCs) were cultured from the synovium of a rat knee, and were magnetically ...
Wiener E - - 2011
Delayed gadolinium-enhanced MR imaging of cartilage is used to quantify the proteoglycan loss in early osteoarthritis. It is assumed that T1 after Gd-DTPA administration in the near equilibrium state reflects selective proteoglycan loss from cartilage. To investigate the influence of the collagen network integrity on contrast accumulation, the relaxation rates ...
Pan J - - 2011
To study the role of vastus lateralis/vastus medialis cross-sectional area CSA ratio (VL/VM CSA ratio) in preclinical knee osteoarthritis (OA) using magnetic resonance imaging (MRI)-based cartilage T2 mapping technique and morphological analysis at 3.0T in non-symptomatic, middle-aged subjects. 174 non-symptomatic individuals aged 45-55 years with OA risk factors were selected ...
Williams A A Cartilage Restoration Center, Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, PA, - - 2011
Ultrashort echo-time enhanced T2∗ (UTE-T2∗) mapping of articular cartilage is a novel quantitative MRI technique with the potential to visualize deep cartilage characteristics better than standard T2 mapping. The feasibility and intersession repeatability of UTE-T2∗ mapping of cartilage in vivo has not previously been evaluated. Eleven asymptomatic subjects underwent repeat ...
Irrechukwu Onyi N ON Magnetic Resonance Imaging and Spectroscopy Section, Gerontology Research Center 4D-06, National Institute on Aging, National Institutes of Health, Baltimore, Maryland, - - 2011
Noninvasive monitoring of matrix development in tissue-engineered cartilage constructs would permit ongoing assessment with the ability to modify culture conditions during development to optimize tissue characteristics. In this study, chondrocytes seeded in a collagen hydrogel were exposed for 20 min/day to pulsed low-intensity ultrasound (PLIUS) at 30 mWcm(-2) and cultured for ...
Inglis Dean - - 2011
The study's purpose was to assess the effect of multiplanar reconstruction on precision of weight-bearing medial and lateral femoral cartilage (cMF, cLF) morphometry in maloriented coronal MR images. Twenty knees were scanned four times with a 1.0 Tesla extremity imager using a fat-suppressed T1-weighted three-dimensional spoiled gradient recalled echo sequence; ...
Sillanpää Petri J - - 2011
The clinical role of patellofemoral (PF) osteoarthrosis (OA) in the outcome after PF stabilizing surgery is poorly understood. The study hypothesis was that PF cartilage lesions and OA are associated with a poor long-term outcome after PF stabilizing surgery. The study cohort included thirty-seven patients who underwent PF stabilizing surgery ...
Holtzman Daniel J DJ School of Medicine, University of California, San Francisco (UCSF), San Francisco, California 94158, - - 2010
To examine T(1ρ) (T1rho) and T(2) quantitative magnetic resonance imaging (MRI) in evaluating cartilage regeneration following microfracture (MFx) and mosaicplasty (MOS) cartilage resurfacing procedures. Eighteen patients underwent MFx and eight patients underwent MOS to treat symptomatic focal cartilage defects. Quantitative T(1ρ) and T(2) maps were acquired at 3-6 months and ...
Bermel Robert A - - 2010
Over the past 2 decades, MRI has been integrated into the diagnosis of multiple sclerosis (MS), the study of MS pathobiology, and the development and monitoring of MS treatments. This integration has irrevocably changed the way we think about the disease. New treatments, advanced through early stages of development using ...
Bittersohl Bernd - - 2010
This pilot study defines the feasibility of cartilage assessment in symptomatic femoroacetabular impingement patients using intra-articular delayed gadolinium-enhanced MRI of cartilage (ia-dGEMRIC). Nine patients were scanned preliminary to study the contrast infiltration process into hip joint cartilage. Twenty-seven patients with symptomatic femoroacetabular impingement were subsequently scanned with intra-articular delayed gadolinium-enhanced ...
Ampanozi Garyfalia - - 2010
This case report describes the incidental finding of a calcified ligamentum arteriosum during post-mortem CT examination. The calcification of the ligament was confirmed at autopsy. Subsequent histological examination revealed the presence of cartilage-like and bone-like tissue as well as extended calcification areas. The importance of not confusing this normal post-mortem ...
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