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Fritz Jan J Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, 601 North Caroline Street, Baltimore, MD, 21287, USA, - - 2014
To evaluate the feasibility of magnetic resonance imaging (MRI)-guided vertebroplasty at 1.5 Tesla using augmented reality image overlay navigation. Twenty-five unilateral vertebroplasties [5 of 25 (20 %) thoracic, 20 of 25 (80 %) lumbar] were prospectively planned in 5 human cadavers. A clinical 1.5-Teslan MRI system was used. An augmented reality image ...
Thompson Eric M EM Department of Neurological Surgery, Oregon Health & Science University, Portland, - - 2014
Object Growing concern about potential adverse effects of ionizing radiation exposure during imaging studies is particularly relevant to the pediatric population. To decrease radiation exposure, many institutions use rapid-sequence (or quick-brain) MRI to evaluate cerebral ventricle size. There are obstacles, however, to widespread implementation of this imaging modality. The purpose ...
Balachandran Ramya R *Department of Otolaryngology, Vanderbilt University Medical Center, Nashville, Tennessee; †Department of Otorhinolaryngology, The University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma; and ‡Department of Electrical Engineering and Computer Science, Vanderbilt University, Nashville, Tennessee, - - 2014
In this case report, we present a novel, minimally invasive image-guided approach to drainage of a petrous apex lesion. A 34-year-old man diagnosed with a petrous apex lesion consistent with cholesterol granuloma. The granuloma was large and caused mild compression of the brainstem with associated neurologic symptoms and seizure-like activity. ...
Ghosh Partha P Siemens Healthcare, Molecular Imaging, Chicago, - - 2014
Bone scintigraphy is widely used for the detection of skeletal metastases, particularly in prostate and breast cancer. Although planar imaging is widely used, single-photon emission computed tomography (SPECT) imaging has demonstrated higher sensitivity. SPECT/CT imaging with the integration of CT and SPECT gantries has enhanced bone scintigraphy by providing accurate ...
Qiu Long-Hua LH Department of Radiology, Huashan Hospital, Fudan University, Shanghai, - - 2014
To evaluate the use of endoglin-targeted paramagnetic liposomes in delineating the glioma margins using magnetic resonance (MR) angiogenesis imaging in a rat model. Four liposome preparations, including nontargeted paramagnetic liposomes (Gd-SLs), isotype control IgG-coupled paramagnetic liposomes (IgG-Gd-SLs), endoglin monoclonal antibody coupled paramagnetic liposomes (MAb-Gd-SLs), and biotinylated antibodies (Bio-MAb)/streptavidin-coupled paramagnetic liposomes ...
Bailey Dale L DL Department of Nuclear Medicine, Royal North Shore Hospital, Sydney, - - 2014
This workshop was held a year after the initial positron emission tomography/magnetic resonance (PET/MR) workshop in Tübingen, which was recently reported in this journal. The discussions at the 2013 workshop, however, differed substantially from those of the initial workshop, attesting to the progress of combined PET/MR as an innovative imaging ...
Cömert Ela E Clinic of Otolaryngology, Ankara Oncology Education and Research Hospital, Ankara, - - 2014
The objective of this study is to demonstrate the surgical anatomy of the infralabyrinthine approach (ILA) and ways to prevent complications based on the complex anatomy. Cadaveric study. Ankara University Faculty of Medicine, Department of Anatomy. Temporal bones were selected from 30 sides of 20 fixed human cadaver heads. Computed ...
Cho Young Jun YJ *Department of Radiology and Radiological Science, Medical University of South Carolina, Charleston, SC ‡Siemens Healthcare Sector, Malvern, PA †Department of Radiology, Konyang University College of Medicine, Daejeon, Korea §Department of Clinical Radiology, University Hospitals LMU, Munich, Germany Departments of ∥Medical Radiology ¶Legal Medicine, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, - - 2014
Iterative image reconstruction algorithms provide significant improvements over traditional filtered back projection in computed tomography (CT). Clinically available through recent advances in modern CT technology, iterative reconstruction enhances image quality through cyclical image calculation, suppressing image noise and artifacts, particularly blooming artifacts. The advantages of iterative reconstruction are apparent in ...
Adrien Judith J Head and Neck Surgery Department, Lariboisière Hospital, 2, rue AmbroiseParé, 75010, Paris, - - 2014
Background: Intra-osseous arachnoid cysts (ACs) are rare and difficult to diagnose. This study's objectives were to describe the clinical and radiological semiology of petrous and sphenoid ACs and to propose a specific management strategy. Methods: This was a retrospective, descriptive study of patients with ACs, which utilized computed tomography (CT), ...
Demirev Anastas A Department of Nuclear Medicine, University Hospital of Maastricht, Maastricht, The - - 2014
In diagnosing osteomyelitis (OM) both MRI and [18 F]FDG PET-CT proved to be accurate modalities. In anticipation of the advent of hybrid PET/MRI scanners we analyzed our patient group to give direction to future imaging strategies in patients with suspected OM. In this retrospective study all patients of a tertiary referral ...
McNulty J P JP School of Medicine and Medical Science, University College Dublin, Belfield, Dublin 4, Ireland, - - 2014
The purpose of this study was to investigate the diagnostic efficacy of a range of conventional magnetic resonance imaging (MRI) pulse sequences in the identification of internuclear ophthalmoplegia (INO) caused by medial longitudinal fasciculus (MLF) lesions in multiple sclerosis patients using a receiver-operating characteristic (ROC) methodology. A total of 15 ...
Fielden Samuel W SW Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia, - - 2014
The major hurdle to widespread adoption of spiral trajectories has been their poor off-resonance performance. Here we present a self-correcting spiral k-space trajectory that avoids much of the well-known spiral blurring during data acquisition. In comparison with a traditional spiral-out trajectory, the spiral-in/out trajectory has improved off-resonance performance. By combining ...
Marras Ioannis I Aristotle University of Thessaloniki, Department of Informatics, Box 451, 54124 Thessaloniki, Greece. Electronic address: - - 2014
In this paper, a novel method for MRI volume segmentation based on region adaptive splitting and merging is proposed. The method, called Adaptive Geometric Split Merge (AGSM) segmentation, aims at finding complex geometrical shapes that consist of homogeneous geometrical 3D regions. In each volume splitting step, several splitting strategies are ...
Condette-Auliac Stéphanie S Department of Diagnostic and Therapeutic Neuroradiology, Hôpital Foch, Suresnes, - - 2014
The purpose of this review is to describe the diagnostic criteria for spinal cord arteriovenous shunts (SCAVSs) when using magnetic resonance imaging (MRI) and magnetic resonance angiography (MRA), and to discuss the extent to which the different MRI and MRA sequences and technical parameters provide the information that is required ...
Sohn Beomseok B Department of Radiology and Research Institute of Radiological Science, Severance Children's Hospital, Yonsei University, College of Medicine, 50 Yonsei-ro, Seodaemun-gu, 120-752, Seoul, South - - 2014
Variable sequences can be used in MR enterography, and no consensus exists for the best protocol in children with Crohn disease. To compare the lesion detectability of various MR enterography sequences and to correlate the findings of these sequences with the Pediatric Crohn's Disease Activity Index (PCDAI) in children with ...
Kofler James M JM Department of Radiology, Mayo Clinic, Rochester, Minnesota. Electronic address: - - 2014
To reduce the radiation dose associated with CT scans, much attention is focused on CT protocol review and improvement. In fact, annual protocol reviews will soon be required for ACR CT accreditation. A major challenge in the protocol review process is determining whether a current protocol is optimal and deciding ...
Haidekker Mark A - - 2014
Computed tomography (CT) scanners are expensive imaging devices, often out of reach for small research groups. Designing and building a CT scanner from modular components is possible, and this article demonstrates that realization of a CT scanner from components is surprisingly easy. However, the high costs of a modular X-ray ...
Hedgire Sandeep S SS Department of Abdominal Imaging and Intervention, Massachusetts General Hospital, 55 Fruit St, Boston, MA, 02114, USA, - - 2014
Multiparametric MRI has developed as a tool for prostate cancer lesion detection, characterization, staging, surveillance, and imaging of local recurrence. Given the disease frequency and the growing importance of imaging, as reliance on PSA declines, radiologists involved in prostate MRI imaging must become proficient with the fundamentals of multiparametric prostate ...
Krüger Karsten K Department of Radiology, Vivantes Humboldt Hospital, Berlin, Germany. Electronic address: - - 2014
To characterize bladder endometriosis by MRI and assess aspects of ureteral involvement. From 2007 to 2013, bladder endometriosis was diagnosed, surgically treated and histopathologically verified in 18 patients (mean age 31.7±4.6 years) retrospectively enrolled under a published MRI protocol at our hospital's Endometriosis Center. Preoperatively, to diagnose disease spread, cystoscopy ...
De Maeseneer Michel M Department of Radiology, Universitair Ziekenhuis Brussel, Laarbeeklaan 101, 1090, Jette, Brussels, Belgium, - - 2014
The purpose of this study is to investigate the distal insertions of the semimembranosus tendon with MR imaging, correlated with findings in cadavers. Four fresh cadaveric specimens were studied with 3-T MR imaging. Sequences included proton density (PD) sequences (TE, 13; TR, 4957; FOV, 170 × 170; matrix, 424 × ...
Shi Yu Y Department of Radiology, Shengjing Hospital, China Medical University, No.36, Sanhao Street, Heping District, Shenyang, 110004, P.R. - - 2014
The purpose of this study was to evaluate the short- and midterm repeatability of liver stiffness measurements with magnetic resonance elastography (MRE) in healthy subjects at 3.0T. Twenty-two healthy volunteers were enrolled in this prospective study. The stiffness measurements were obtained from three slices with three repeated acquisitions for each ...
Oohashi Yoshikazu Y Oohashi Orthopaedic Clinic, 38-20, Ninomiya-3-choume, Fukui City, Fukui-Ken, 910-0015, Japan, - - 2014
Bipartite patella has been recognized as an incidental radiographic finding. However, symptomatic bipartite patella is occasionally diagnosed in adolescents and young athletes. The incidence of bipartite patella has been reported at 0.2-1.7, and 1-2 % of these cases are symptomatic. The purpose of this review article was to discuss current concepts ...
Boulter Daniel J DJ Department of Radiology, Medical University of South Carolina, Charleston, SC, - - 2014
Percutaneous spine procedures can be performed with computed tomography (CT) guidance. The use of CT guidance is cumbersome for procedures where an oblique needle trajectory is imposed by the spatial orientation of the spine, often requiring complex needle triangulation relative to the true axial scan plane. We describe a procedural ...
Heymsfield Steven B SB Pennington Biomedical Research Center, Louisiana State University, 6400 Perkins Rd, Baton Rouge, LA, 70808, USA, - - 2014
Even though skeletal muscle (SM) is the largest body compartment in most adults and a key phenotypic marker of sarcopenia and cachexia, SM mass was until recently difficult and often impractical to quantify in vivo. This review traces the historical development of SM mass measurement methods and their evolution to ...
White Mark J MJ National Hospital for Neurology and Neurosurgery, Queen Square, London, UK; UCL Institute of Neurology, Queen Square, London, - - 2014
The design and operation of a facility in which a magnetic resonance imaging (MRI) scanner is incorporated into a room used for surgical or endovascular cardiac interventions presents several challenges. MR safety must be maintained in the presence of a much wider variety of equipment than is found in a ...
Karantanis D D David Geffen School of Medicine at UCLA, Department of Molecular and Medical Pharmacology, 200 Medical Plaza, Suite B114, Los Angeles, California 90024, United States, E-mail: - - 2014
Aim: To elucidate techniques most commonly used for interpreting oncologic PET/CT studies. This survey forms a basis to work on standardization of reporting and highlight the most important issues to be addressed.Methods: A web-based survey of 329 PET/CT imaging specialists was designed with the intent to determine image interpretation patterns. ...
Van Reeth Eric E School of Chemical and Bioengineering, Nanyang Technological University, - - 2014
Four-dimensional (4D) thoracic magnetic resonance imaging (MRI) sequences have been shown to successfully monitor both tumor and lungs anatomy. However, a high temporal resolution is required to avoid motion artifacts, which leads to volumes with poor spatial resolution. This article proposes to reconstruct an isotropic 4D MRI thoracic sequence with ...
Mendes Coelho Vanessa C VC From the Clínica DAPI-Diagnóstico Avançado por Imagem (V.C.M.C., D.B., S.E.O., A.d.C.N.); and UFPR-Universidade Federal do Paraná (A.d.C.N.), Curitiba, PR, - - 2014
Two patients with cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL) (figure), evolving with cognitive deterioration, had MRI. Hydrographic 3D high-resolution turbo spin-echo (TSE) with variable flip angle sequence (SPACE) was performed to demonstrate the subcortical lacunar lesions (SLL) (figure, A and B), considered specific in CADASIL.(1.)
Park S Y SY Department of Radiology, Pusan National University Hospital, Biomedical Research Institute, Republic of Korea; Pusan National University School of Medicine, Busan, Republic of - - 2014
To compare the diagnostic accuracies of three-dimensional (3D) isotropic magnetic resonance arthrography (MRA) using fat-suppressed proton density (PD) or volume interpolated breath-hold examination (VIBE) sequences with that of conventional MRA for the diagnosis of rotator cuff and labral lesions. Eighty-six patients who underwent arthroscopic surgery were included. 3D isotropic sequences ...
Abuja G A GA Department of Clinical Sciences, Tufts University, Cummings School of Veterinary Medicine, 200 Westboro Road, North Grafton, MA 01536, - - 2014
Although an uncommon condition, cranial nuchal bursitis can affect the performance of the equine athlete. The anatomy is not well described and there are no reports of diagnostic imaging for endoscopic approaches OBJECTIVES: To describe the anatomy, ultrasonographic (US) and magnetic resonance (MR) features and endoscopic approach, of the cranial ...
Lamba Ramit R Department of Radiology, University of California, Davis, Sacramento, California. Electronic address: - - 2014
Radiation dose to patients can be high for some CT-guided interventional procedures in the abdomen and pelvis, especially tumor ablations. Strategies for radiation dose reduction include choosing an alternative guidance modality that does not use radiation whenever feasible, restricting the cranio-caudal length of interventional scans to the interventional target, and ...
Van Beers Bernard E BE IPMA Laboratory, U773 INSERM University Paris Diderot, Sorbonne Paris Cité Department of Radiology Beaujon University Hospital Paris Nord 100 Boulevard du General Leclerc 92110 Clichy, - - 2014
Summary By showing that intravoxel incoherent motion parameters at diffusion-weighted magnetic resonance (MR) imaging may be indicators of the microcirculatory changes in patients with nonalcoholic steatohepatitis and fatty liver disease, Joo et al have taken a step forward in the validation of quantitative MR imaging parameters as biomarkers of nonalcoholic ...
Westphalen Antonio C AC 1 Department of Radiology and Biomedical Imaging, University of California San Francisco, 505 Parnassus Ave, M-372, Box 0628, San Francisco, CA, - - 2014
OBJECTIVE. In this article, we provide our perspective on current multiinstitutional efforts to improve standardization of interpretation and reporting of multiparametric prostate MRI, emphasizing their strengths and limitations based on our experiences, and provide several suggestions for guiding continued initiatives for standardizing multiparametric prostate MRI reporting. CONCLUSION. Significant steps are ...
Tharin Baxter D BD 1 Department of Radiology, San Antonio Military Medical Center, 3851 Roger Brooke Dr, Fort Sam Houston, TX - - 2014
OBJECTIVE. This article reviews brachial plexus anatomy in the context of key landmarks, illustrates common findings of traumatic and nontraumatic causes of brachial plexopathies, describes symptoms associated with these maladies, and explains how proper diagnosis impacts clinical decisions. CONCLUSION. Knowledge of brachial plexus anatomy and of the imaging sequelae of ...
Suzuki Jun J Department of Otorhinolaryngology-Head and Neck Surgery, Tohoku University School of - - 2014
Osteoma of the internal auditory canal (IAC) is an uncommon benign bone tumor. Its imaging features may be similar to other IAC lesions, such as vestibular schwannomas that are benign and usually slow-growing but sometimes life-threatening tumors. Thus, detecting IAC lesions and differentiating osteoma from other IAC lesions are both ...
Santhanam Anand A Department of Radiation Oncology, University of California, Los - - 2014
The aim of this paper is to model and visualize cardiovascular deformations in order to better understand vascular movements inside the lung and heart caused by abnormal cardiac conditions. The modeling was performed in two steps: first step involved modeling the cardiac output taking into account of the heart rate ...
Pasoglou Vasiliki V Department of Radiology, Centre du Cancer et Institut de Recherche Expérimentale et Clinique (IREC), Cliniques Universitaires Saint Luc, Université Catholique de Louvain, Brussels, - - 2013
Multiparametric magnetic resonance imaging (mpMRI) is the standard for local prostate cancer (PCa) staging. Whole-body MRI (wbMRI) has shown capabilities for metastatic screening. This study assesses the feasibility and value of an all-in-one AJCC TNM staging of PCa during a unique MRI session combining mpMRI and wbMRI. Thirty consecutive patients ...
Pereira Faria H H Department of Anatomy and Image, Federal University of Minas Gerais, Minas Gerais, Brazil; School of Medicine, Federal University of Ouro Preto, Minas Gerais, Brazil. Electronic address: - - 2013
To describe the high-resolution computed tomography (HRCT) features of pneumoconiosis observed in soapstone artisans. The present study included 12 soapstone artisans with chest radiography abnormalities consistent with the diagnosis of pneumoconiosis, in accordance with the International Labour Office classification. All patients had undergone HRCT, and the images were retrospectively analysed ...
Diez Yago Y Computer Vision and Robotics Group, University of Girona, Campus Montilivi, Ed. P-IV, 17071, Girona, Spain, - - 2013
Registration is a key step in many automatic brain Magnetic Resonance Imaging (MRI) applications. In this work we focus on longitudinal registration of brain MRI for Multiple Sclerosis (MS) patients. First of all, we analyze the effect that MS lesions have on registration by synthetically eliminating some of the lesions. ...
Beckers Catherine - - 2013
Introducing a hybrid imaging method such as single photon emission computed tomography (SPECT)/CT greatly alters the routine in the nuclear medicine department. It requires designing new workflow processes and the revision of original scheduling process and imaging protocols. In addition, the imaging protocol should be adapted for each individual patient, ...
Theologis Alexander A - - 2013
Study Design. Observational, cross-sectionalObjective. To evaluate cervical spine clearance protocols in level I trauma centers in the United States.Summary of Background Data. Cervical spine clearance protocols were developed to prevent missed injuries that could result in neurologic deficits. The degree of incorporation of evidence-based guidelines into protocols at trauma centers ...
Sutter Reto - - 2013
OBJECTIVE. The purpose of this article is to compare slice-encoding for metal artifact correction (SEMAC) sequences versus optimized standard MRI sequences in patients with total knee arthroplasty (TKA). SUBJECTS AND METHODS. Forty-two patients with TKA underwent 1.5-T MRI. Sequences optimized for metal implant imaging (SEMAC) were compared with standard sequences ...
Blanke Philipp - - 2013
Transcatheter aortic valve replacement is a new method to treat patients with symptomatic, severe aortic stenosis who are at high surgical risk. Short- and midterm results have been encouraging, with more than 90 000 procedures performed worldwide. Patient selection, prosthesis sizing, and access strategies heavily rely on noninvasive imaging. Computed ...
Cuccurullo V - - 2013
In the last decades the outcome of women with breast cancer has been significantly modified partially as a result of screening which has facilitated earlier diagnosis and consequently allowed a conservative surgical approach. Today diagnostic imaging is generally based on Mammography (Mx), with a minor role for ultrasounds and Magnetic ...
Izumo Takehiro T Department of Endoscopy, Respiratory Endoscopy Division, National Cancer Center Hospital, Tokyo 104-0045, - - 2013
With the widespread use of computed tomography (CT), the frequency of discovering ground glass opacity (GGO) pulmonary lesions has increased. There have been some reports on surgery or transthoracic needle aspiration (TTNA) for diagnostic sampling of GGOs but none on transbronchial biopsy (TBB). The purpose of this study was to ...
Engelmann Bodil Elisabeth - - 2013
Abstract Objectives. Optimal management of colon cancer (CC) requires detailed assessment of extent of disease. This study prospectively investigates the diagnostic accuracy of 2-deoxy-2-[18F]fluoro-D-glucose positron emission tomography/computed tomography (PET/CT) for staging and detection of recurrence in primary CC. Material and methods. PET/CT for preoperative staging was performed in 66 prospectively ...
Vargas Hebert Alberto HA From the Department of Radiology (H.A.V., C.W., J.J.F., A.W., D.A.G., S.M.L., H.H.), Department of Epidemiology and Biostatistics (D.K., M.G.), and Genitourinary Oncology Service, Department of Medicine (M.J.M., H.I.S.), Memorial Sloan-Kettering Cancer Center, 1275 York Ave, New York, NY 10065; and Department of Radiology, Oncology and Radiations Sciences, Section of Radiology, Nuclear Medicine and PET, Uppsala University, Uppsala, Sweden - - 2013
Purpose To compare the features of bone metastases at computed tomography (CT) to tracer uptake at fluorine 18 fluorodeoxyglucose (FDG) positron emission tomography (PET) and fluorine 18 16β-fluoro-5-dihydrotestosterone (FDHT) PET and to determine associations between these imaging features and overall survival in men with castration-resistant prostate cancer. Materials and Methods ...
Schilling René R From the Department of Radiology, Charité Campus Mitte, Universitaetsmedizin Berlin, Charitéplatz 1, 10117 Berlin, Germany (R.S., A.S.I.); 3D Laboratory, Faculty II, Institute for Mathematics, Technische Universitaet Berlin, Berlin, Germany (B.J.); and Museum of Natural History, Leibniz Institute for Evolution and Biodiversity Research, Berlin, Germany (O.W., - - 2013
Purpose To demonstrate the feasibility of using computed tomography (CT) to confirm the identity of an unprepared fossil and to use the CT dataset to separate the fossilized bone from its surrounding sediment matrix and produce a three-dimensional (3D) print. Materials and Methods The examined object was a plaster jacket ...
Puech P - - 2013
Multiparametric MRI (mp-MRI) of the prostate currently provides stable and reproducible performances. The usefulness of dynamic contrast-enhanced (DCE) sequences is currently challenged, as they sometimes only confirm what has already been observed on diffusion-weighted imaging (DWI) and require the additional purchase of a contrast agent. Eliminating these sequences may help ...
Shaikh Aasef G - - 2013
Torsional nystagmus was noted in a patient with hypothalamic hamartoma. Magnetic resonance imaging revealed an exophytic hypothalamic mass extending into the pre-pontine cistern and abutting ventral mesencephalon. The quickphase of the torsional nystagmus was directed towards the left side, ipsilateral to the side of compression by the hamartoma. Ipsi-lesionally directed ...
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