Search Results
Results 1 - 50 of 1386
1 2 3 4 5 6 7 8 9 10 >
Craiovan Benjamin B Orthopaedic Department, University of Regensburg, Regensburg, Germany, - - 2014
Malposition of the acetabular component in total hip arthroplasty (THA) is a common surgical problem that can lead to hip dislocation, reduced range of motion and may result in early loosening. The aim of this study is to validate the accuracy and reproducibility of a single x-ray image based 2D/3D ...
Michele Cappuccio C Department of Orthopedics and Traumatology - Spine Surgery, Maggiore Hospital, Bologna, - - 2014
Study Design. A case report.Objective. To describe an exceptional case of traumatic two level adjacent disks disruption with expulsion of the vertebral body into the spinal canal treated by vertebrectomy and spine shortening.Summary of Background Data. Traumatic spondyloptosis is a very rare injury caused by high-energy trauma. Vertebral body expulsion ...
Egaña-Ugrinovic Gabriela G Maternal-Fetal Medicine Department, Institut Clínic de Ginecologia, Obstetrícia i Neonatologia (ICGON); Fetal and Perinatal Medicine Research Group, Institut d'Investigacions Biomediques August Pi i Sunyer (IDIBAPS) and Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Hospital Clínic, Universitat de Barcelona, Barcelona, - - 2014
To evaluate corpus callosum (CC) development by Magnetic Resonance Imaging (MRI) in late-onset intrauterine growth restricted (IUGR) fetuses compared to appropriate for gestational age (AGA) and its association with neurobehavioral outcome. 117 late-onset IUGR and 73 control fetuses were imaged using a 3 T MRI scanner at term, obtaining T2 half-Fourier ...
Ra In-Hoo IH Department of Orthopedic Surgery, Kyungpook National University Hospital, Daegu, South - - 2014
Many spine surgeons use the freehand technique for lateral mass(LM) screw fixation. However, issues about its safety still exist. This radiological and clinical assessment examines the safety of the freehand technique after LM screw insertion. Retrospective case series PATIENT SAMPLE: A total of 26 patients (21 males and five females) ...
Tirumani Sree Harsha SH 1 Department of Imaging, Dana Farber Cancer Institute, Harvard Medical School, 450 Brookline Ave, Boston, MA - - 2014
OBJECTIVE. The purpose of this study was to describe the MRI features of extramedullary myeloma and to evaluate the role of MRI in extramedullary myeloma. MATERIALS AND METHODS. The cases of 28 patients (15 men, 13 women; mean age, 57.53 years; range, 34-83 years) with extramedullary myeloma who underwent MRI ...
Kuwatsuru Ryohei R Department of Radiology, Juntendo University, Faculty of Medicine, Tokyo, - - 2014
To demonstrate the noninferiority of gadobutrol-enhanced magnetic resonance imaging (MRI) compared with gadopentetate dimeglumine-enhanced MRI in Asian patients referred for contrast-enhanced imaging of the body or extremities. A multicenter, parallel-group comparison study of Asian adults referred for contrast-enhanced MRI were randomized (1:1) to either gadobutrol or gadopentetate dimeglumine. Lesions were ...
Mapelli Paola P Departments of aSurgery and Cancer bNuclear Medicine cDivision of Experimental Medicine, Imperial College, Hammersmith Hospital, London, - - 2014
The objective of this study was to assess the relevance of physiological Ga-DOTATATE PET/computed tomography (CT) findings in the pancreas guided by morphological imaging (MI) in comparison with pathological tumour uptake in patients with neuroendocrine tumours (NETs). A total of 138 patients with pancreatic NET (pNET; n=38) or non-pNET (n=100) ...
Byun Byung Hyun BH Departments of Nuclear Medicine, Korea Institute of Radiological and Medical Sciences (KIRAMS), Seoul, Republic of - - 2014
We evaluated the potential of sequential fluorine-18 fluorodeoxyglucose ((18) F-FDG) positron emission tomography (PET)/computed tomography (CT) and MRI (PET/MRI) after one cycle of neoadjuvant chemotherapy to predict a poor histologic response in osteosarcoma. A prospective study was conducted on 30 patients with osteosarcoma treated with two cycles of neoadjuvant chemotherapy and surgery. All ...
Liese Juliane J Department of General and Visceral Surgery, University Hospital Frankfurt, Goethe-University, Theodor-Stern-Kai 7, Frankfurt, 60590, Germany, - - 2014
The diagnosis of acute appendicitis remains a challenge in daily clinical practice. The aim of the present study was to determine clinical criteria for a careful and cost-effective integration of computed tomography (CT) scans in the clinical pathway for the diagnosis of acute appendicitis. In this retrospective study, we analyzed ...
Huppertz Alexander A Department of Radiology, Charité-University Hospitals Berlin, Charitéplatz 1, 10117, Berlin, Germany, - - 2014
The number of total hip arthroplasties is continuously rising. Although less invasive surgical techniques, sophisticated component design, and intraoperative navigation techniques have been introduced, the rate of peri- and postoperative complications, including dislocations, fractures, nerve palsies, and infections, is still a major clinical problem. Better patient outcome, faster recovery and ...
Kaur Berneet B *Department of Neurology, University of California, Davis, Sacramento, CA †Department of Neurology, Boston University School of Medicine, Framingham Heart Study ‡Department of Biostatistics, Boston University School of Public Health, Boston, - - 2014
Studies of clinical and community cohorts have shown that antemortem imaging measures of hippocampal volume have correlated with postmortem Alzheimer pathology. Fewer studies have examined the relationship between both Alzheimer and cerebrovascular pathology, and antemortem brain imaging. The aim of this study was to correlate antemortem brain magnetic resonance imaging ...
Clause A L - - 2014
A 19-year-old man was admitted with acute dyspnoea. Physical examination revealed subcutaneous emphysema in the cervical and thoracic area. This was further confirmed by the total body computed tomography that also demonstrated mediastinal emphysema. Epidural pneumatosis of the thoracis spine was also evident. There was no history of trauma, but ...
Guttikonda Ravi R Imaging Institute, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH 44195, United - - 2014
The purpose of this study was to estimate total effective dose and cancer risk related to treatment monitoring and surveillance computed tomography (CT) scans in a cohort of patients diagnosed with lymphoma. 76 patients with head, neck, chest, abdomen or pelvis CT and whole-body positron emission tomography (PET)/CT were identified ...
Zhang Zhe Z From the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, - - 2014
A 39-year-old man with mild hemophilia A presented with a 6-month history of repeated headache with mild difficulty in verbal expression. He had a history of pseudotumor in the left tibia, which had been treated by surgery 3 years ago. CT and MRI demonstrated bilateral extra-axial lesions with bone destruction ...
Takeuchi Satoshi S Department of Nuclear Medicine, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd., Houston, TX 77030, USA. Electronic address: - - 2014
Ovarian low-grade serous carcinoma (LGSC) is a rare and indolent tumor. The utility of (18)F-FDG PET/CT in monitoring patients with LGSC has not been established. We assessed the accuracy and clinical impact of (18)F-FDG PET/CT in patients with ovarian LGSC after initial treatment. A retrospective analysis was performed on patients ...
Livne Ofir O Department of Neurosurgery, Sheba Medical Center, Sackler School of Medicine, Tel Aviv University, - - 2014
The aim of the present study was to determine the utility of an intra-operative magnetic resonance imaging (iMRI) system (Polestar N-10, 20, 30) in achieving maximal resection of intra-axial brain lesions. The subjects comprised 163 patients with intra-axial brain lesions that underwent resection at Sheba Medical Center using the Polestar ...
Yeo Dong Myung DM Department of Radiology, Yeouido St. Mary's Hospital, The Catholic University of Korea, Republic of Korea. Electronic address: - - 2014
To assess changes over time in imaging findings retrospectively by multidetector CT (MDCT) with two-dimensional (2D) multiplanar reconstruction and three-dimensional (3D) CT gastrography (CTG), after endoscopic submucosal dissection (ESD) in patients with early gastric cancer (EGC), and to correlate 3D CT images with endoscopic appearance. In this retrospective study, a ...
Giannetti Paolo P Centre for Neuroinflammation and Neurodegeneration, Faculty of Medicine, Imperial College London, Hammersmith Campus, Du Cane Road, London, W12 0NN, United Kingdom. Electronic address: - - 2014
The pathophysiological correlates and the contribution to persisting disability of hypointense T1-weighted MRI lesions, black holes (BH), in multiple sclerosis (MS) are still unclear. In order to study the in vivo functional correlates of this MRI finding, we used 11C-PK11195 PET (PK-PET) to investigate changes in microglial activity. Ten relapsing ...
Yong Woon Jae WJ Department of Mechanical Engineering, POSTECH, Pohang, - - 2014
The proximal ulna, particularly the course of the posterior border, has a complex three-dimensional (3D) morphology which has been highlighted recently due to its clinical relevance in relation to surgical treatments. 3D computed tomography (CT) reconstruction and computer-aided design (CAD) based software can help to visualize the complex anatomy and ...
Hassepass F F Department of Otorhinolaryngology-Head and Neck Surgery, University Medical Center - - 2014
Purpose: Cochlear implantation (CI) represents the gold standard in the treatment of children born deaf and postlingually deafened adults. Initial magnetic resonance imaging (MRI) was contraindicated in CI users. Meanwhile, there are specific recommendations concerning MRI compatibility depending on the type of CI system and the device manufacturer. Some CI ...
Bertolaccini Luca L Division of Thoracic Surgery Unit, S. Croce e Carle Hospital, Via Michele Coppino 26, 12100, Cuneo, Italy, - - 2014
(18)Fluorine-fluorodeoxyglucose positron emission tomography/computed tomography is not yet accepted as a standard pretreatment evaluation of thymic epithelial neoplasm (TEN). Statistical correlation between standardized uptake value of tumor/mediastinum ratio and patients' WHO risk class has been reported. PET metabolic tumor volume (MTV) and total glycolytic volume (TGV) have been reported as ...
Zhao Kai K Monell Chemical Senses Center, Philadelphia, PA; Department of Otolaryngology, Thomas Jefferson University, Philadelphia, - - 2014
Besides sensorineural factors, conductive impediments likely contribute to olfactory losses in chronic rhinosinusitis (CRS) patients, yet no conclusive evidence exists. We aimed to examine possible conductive factors using computational fluid dynamics (CFD) models. A total of 29 CRS patients were assessed via odorant detection thresholds (ODTs), rhinomanometry (nasal resistance [NR]), ...
Walther Stefan S From the Department of Radiology, Charité, Medical School, Humboldt-Universität zu Berlin, Freie Universität Berlin, Charitéplatz 1, 10117 Berlin, Germany (S.W., S.S., R.T., G.M.S., M.D.); and Department of Medical Statistics, Informatics and Documentation, University Hospital of Friedrich Schiller University Jena, Jena, Germany - - 2014
Purpose To determine the compliance of prospective diagnostic accuracy studies investigating computed tomographic (CT) coronary angiography with Standards for Reporting of Diagnostic Accuracy (STARD) guidelines. Materials and Methods Relevant studies were identified by means of a systematic literature search that included the MEDLINE, EMBASE, and Institute for Scientific Information Web ...
Smith Matthew R MR Department of Radiology, University of Wisconsin, Madison, Wisconsin, - - 2014
To demonstrate feasibility of exploiting the spatial distribution of off-resonance surrounding metallic implants for accelerating multispectral imaging techniques. Multispectral imaging (MSI) techniques perform time-consuming independent three-dimensional acquisitions with varying radio frequency offsets to address the extreme off-resonance from metallic implants. Each off-resonance bin provides a unique spatial sensitivity that is ...
Reza Soltani Zahra Z Department of Physical Medicine and Rehabilitation, School of Medicine, Islamic Republic of Iran Army University of Medical Sciences, Tehran, Islamic Republic of - - 2014
The aim of this study was to evaluate the agreement of magnetic resonance imaging and electrodiagnostic studies by comparing their findings in patients with clinically suspected radiculopathy. The agreements between these two procedures and clinical findings were also examined. In a 2-year cross-sectional study, a total of 114 patients with ...
Fujishiro Takaaki T Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-Cho Chuo-Ku, Kobe, Hyogo, 650-0017, Japan, - - 2014
The purposes of the present study were (1) to investigate the variation and accuracy of both acetabular and femoral component version on the axial computed tomographic (CT) images, and (2) to better define the associations between the components version and clinical factors. We investigated acetabular and femoral component orientation in ...
Krishnaswamy Amar A Department of Cardiovascular Medicine, Cleveland Clinic, Cleveland, - - 2014
Objectives: Our study was aimed at evaluation of 3D-CT overlay onto the catheterization laboratory fluoroscopy to guide structural cardiac interventions. Background: Current imaging for structural cardiac interventions (fluoroscopy, echocardiography) may not provide adequate guidance. The ability to integrate intracardiac three-dimensional CT imaging data in the cardiac catheterization laboratory may be ...
Wang Shanshan - - 2014
Due to the imperfections of the radio frequency (RF) coil or object-dependent electrodynamic interactions, magnetic resonance (MR) images often suffer from a smooth and biologically meaningless bias field, which causes severe troubles for subsequent processing and quantitative analysis. To effectively restore the original signal, this paper simultaneously exploits the spatial ...
Jung Sung Il SI Department of Radiology, Research Institute of Medical Science, Konkuk University School of Medicine, Seoul 143-729, - - 2014
To compare the diagnostic performance and radiation dose between contrast-enhanced CT (ECT) alone, and combined unenhanced and contrast-enhanced CT (UE + ECT) for the assessment of adnexal mass. This retrospective study was approved by the Institutional Review Board. A total of 146 consecutive patients (mean age, 41.1 years) who underwent ...
Zhu Lei L Nuclear and Radiological Engineering and Medical Physics Programs, The George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, - - 2014
Iterative reconstruction via total variation (TV) minimization has demonstrated great successes in accurate CT imaging from under-sampled projections. When projections are further reduced, over-smoothing artifacts appear in the current reconstruction especially around the structure boundaries. We propose a practical algorithm to improve TV-minimization based CT reconstruction on very few projection ...
Yoon Jung-Hee JH Department of Radiology, Haeundae Paik Hospital, Inje University College of Medicine, Jwa-dong, Haeundae-gu, Busan, - - 2014
We report two cases of focal nodular hyperplasia in patients following gadoxetic acid (Gd-EOB-DTPA)-enhanced magnetic resonance imaging confirmed with histopathology. These cases showed an atypical pattern during the delayed-hepatobiliary phase after the injection of gadoxetic acid. One case showed a total defect, and the other showed a peripheral ring-like enhancement ...
Lurz Philipp P Department of Internal Medicine/Cardiology, Heart Center of the University Leipzig, Struempellstr. 39, 04289 Leipzig, - - 2013
The presence of pericardial effusion (PE) is considered to be suggestive of inflammation in suspected myocarditis. However, the incremental value of assessing for PE in addition to comprehensive cardiac magnetic resonance (CMR) imaging remains unclear. In total, 132 patients with suspected acute (AMC) or chronic myocarditis (CMC) were included. All ...
Suttmeyer Britta - - 2013
Abstract Objectives: A non-contrast-enhanced 2D time-of-flight magnetic resonance angiography (TOF-MRA) protocol was compared with the gold standard of planar digital subtraction angiography (DSA) by calculating correlations of vessel diameters. Methods: A total of 1134 vascular diameters in 81 corresponding sites were prospectively measured by TOF-MRA and DSA in seven patients ...
Postma Ingri L E IL Amphia Hospital Breda, Breda, The Netherlands, - - 2013
In mass casualty incidents (MCI) a large number of patients need to be evaluated and treated fast. Well-designed radiological guidelines can save lives. The purpose of this study was to evaluate the Advanced Trauma Life Support (ATLS) radiological guidelines in the MCI of an aeroplane crash. Medical data of all ...
Jeon Jae Kyun - - 2013
Study Design. A retrospective review seriesObjective. To identify vascular anatomy and esophageal deviations that may interfere with a percutaneous anterior approach in cervical spine surgery.Summary of Background Data. The percutaneous anterior approach has been used for minimally invasive interventions of cervical disc diseases. Although the percutaneous anterior approach is frequently ...
Xue Ming - - 2013
Purpose: To improve the diagnostic quality of CT pulmonary angiography (CTPA) by individually optimizing a biphasic contrast injection function to achieve targeted uniform contrast enhancement. To compare the results against a previously reported discrete Fourier transform (DFT) approach.Methods: This simulation study used the CTPA datasets of 27 consecutive patients with ...
Mahmud N A NA Department of Diagnostic Radiology, Khoo Teck Puat Hospital, Alexandra Health, 90 Yishun Central, Singapore 768828. - - 2013
Spontaneous spinal epidural haematoma is a rarely encountered cause of back pain. It often leads to cauda equina syndrome, necessitating emergency spinal surgery. We report the case of a 19-year-old Chinese man who presented with pain in the lower back, which started after he had carried some heavy boxes. He ...
Lee Hyun Jung HJ The Clinic for Torticollis, Department of Physical Medicine and Rehabilitation, Ajou University School of Medicine, Suwon, - - 2013
To examine whether the clinical severity of cervical dystonia (CD) significantly correlates with (18)F-fluorodeoxyglucose positron emission tomography/computed tomography ((18)F-FDG PET/CT) findings as well as to determine the threshold of the clinical severity of CD for positive (18)F-FDG PET/CT study findings. Forty-seven subjects with torticollis as one of the symptoms of ...
Gregory Thomas - - 2013
Background and purpose It is difficult to evaluate glenoid component periprosthetic radiolucencies in total shoulder arthroplasties (TSAs) using plain radiographs. This study was performed to evaluate whether computed tomography (CT) using a specific patient position in the CT scanner provides a better method for assessing radiolucencies in TSA. Methods Following ...
Orlacchio Antonio - - 2013
The authors analysed the impact of nonmedical costs (travel, loss of productivity) in an economic analysis of PET-CT (positron-emission tomography-computed tomography) performed with standard contrast-enhanced CT protocols (CECT). From October to November 2009, a total of 100 patients referred to our institute were administered a questionnaire to evaluate the nonmedical ...
Boccardi Marina - - 2013
An effort to define and validate a Harmonized Protocol for standard hippocampal segmentation is being carried out. We wished to estimate the effect of magnetic resonance image (MRI) spatial orientation on manual hippocampal segmentations to define optimal standard orientation of MRIs for hippocampal volumetry. Three expert tracers segmented twice the ...
Gökçe E - - 2013
This study evaluated morphological features of developmental venous anomalies (DVAs) based on magnetic resonance imaging (MRI) findings. The study also evaluated the factors affecting the visibility of DVAs on MRI. We reviewed contrast-enhanced MRIs of 75 patients with DVA. The images were selected from 1,165 consecutive cranial MRIs. The images ...
Chun-Sing Wong - - 2013
To describe the prevalence of synchronous second primary malignancy detected by PET/ CT in our clinical practice and its differentiating features from metastatic lesion. All PET/CT scans from 1st October 2009 to 30th September 2010 were reviewed. The suspected cases of synchronous second primary malignancy detected by PET/CT were selected, ...
Begun James W - - 2013
This study explores characteristics that distinguish higher and lower CT use by patients and referring physicians in a population of members of a large health insurance plan. We analyzed 310,467 CT scan claims from 2009-10 in a health plan serving approximately 1.5 million members. Patients who used CT scans and ...
Chuang Michael L - - 2013
Abdominal aortic calcification (AAC) can be quantified using computed tomography (CT), but imaging planes are prescribed based on bony landmarks, so that individual variation between the landmark and the aortoiliac junction can result in variable aortic coverage. In the Framingham CT substudy, we scanned a 15-cm (Z-direction) abdominal segment cranial to ...
Westermann Robert W - - 2013
The purpose of this study was to define an anatomic standard for the femoral footprint of the posterior cruciate ligament (PCL) based on 3-dimensional (3D) surface reconstructions of computed tomography (CT) scans of cadaveric knees. The femoral insertion of the PCL was identified and marked with drill holes in 7 ...
Ma Li - - 2013
A 24-year-old female patient presented to the neurological department after a seizure that lasted for 10 minutes. Magnetic resonance imaging revealed a cystic and heterogeneously enhanced giant mass in the right frontal lobe mimicking parasagittal meningioma. Surgery via a single frontal craniotomy confirmed the tumor was attached to the falx ...
Tsili A C - - 2013
The objective of this retrospective study was to assess the diagnostic performance of multidetector CT (MDCT) in staging patients with surgical-pathological proven early-stage cervical carcinoma. A total of 22 women were referred for preoperative staging by MDCT, on a 16-row CT scanner. The protocol included scanning of the abdomen during ...
Arabi Mohammad - - 2013
The aim of this study was to evaluate our institutional experience with single-photon emission computed tomography/computed tomography (SPECT/CT) hepatobiliary imaging as a problem-solving tool in the workup of suspected acute cholecystitis. We queried our radiology information system database for cases in which SPECT/CT had been performed as part of the ...
Margolis Nathaniel E - - 2013
The purpose of this study was to compare computed tomography (CT) and magnetic resonance imaging (MRI) in terms of likelihood of providing a definitive diagnosis (DD) and a recommendation for additional imaging (RAI), when performed to evaluate indeterminate liver and renal lesions detected on ultrasound as well as in terms ...
1 2 3 4 5 6 7 8 9 10 >