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Hinrichs Jan J Institute of Interventional Radiology, Hannover Medical School, Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Member of the German Center for Lung Research, OE 8220, Carl-Neuberg-Str. 1, 30625 Hannover, Germany. Electronic address: - - 2014
Detection of a systemic hemodynamic response in patients suffering from allergic asthma after segmental endobronchial allergen challenge using phase-contrast magnetic resonance imaging (MRI). Nine asthma patients and four healthy volunteers were examined using MRI (1.5T) before (0 hour), 6 hours, and 24 hours after segmental allergen challenge. Two-dimensional phase-contrast MRI ...
Koplay Mustafa M Department of Radiology, Medical Faculty of Selcuk University, Konya, - - 2014
To determine the diagnostic accuracy of diffusion-weighted magnetic resonance imaging (DW-MRI) for the pre-operative assessment of patients with endometrial carcinoma and to assess myometrial and cervical invasion as well as pelvic lymph node metastasis. Fifty-eight women who underwent surgery for histopathologically confirmed endometrial carcinoma were included in the current study. ...
Barfod Kristoffer Weisskirchner KW Department of Orthopedics, Clinical Orthopedic Research Hvidovre, Copenhagen University Hospital Hvidovre, Kettegård Alle 30, 2650, Hvidovre, Denmark, - - 2014
A clinically applicable and accurate method for measuring Achilles tendon length is needed to investigate the influence of elongation of the Achilles tendon after acute rupture. The purpose of this study was to develop and validate an ultrasonographic (US) length measurement of the Achilles tendon-aponeurosis complex. Both legs of 19 ...
Cai Pei-Qiang PQ State Key Laboratory of Oncology in South China; Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, Peoples Republic of China, - - 2014
To determine diagnostic performance of simple measurements on diffusion-weighted MR imaging (DWI) for assessment of complete tumour response (CR) after neoadjuvant chemoradiotherapy (CRT) in patients with locally advanced rectal cancer (LARC) by signal intensity (SI) and apparent diffusion coefficient (ADC) measurements. Sixty-five patients with LARC who underwent neoadjuvant CRT and ...
McGlone E R ER Department of Surgery, St George's Healthcare NHS Trust, London, UK, - - 2014
Magnetic resonance imaging (MRI) is known to have high predictive accuracy for circumferential resection margin (CRM) involvement of pre-treatment rectal tumours. This study aims to assess predictive accuracy of MRI for CRM involvement in rectal cancers post-long-course chemoradiotherapy (CRT) and in particular to understand how this information can influence surgical ...
Sekhon Mypinder S MS Division of Critical Care Medicine, Department of Medicine, Vancouver General Hospital, University of British Columbia, Room 2438, Jim Pattison Pavilion, 2nd Floor, 855 West 12th Avenue, Vancouver, BC, V5Z 1M9, Canada, - - 2014
Assess the relationship between optic nerve sheath diameter (ONSD) measured on bedside portable computed tomography (CT) scans and simultaneously measured intracranial pressure (ICP) in patients with severe traumatic brain injury. Retrospective cohort study of 57 patients admitted between 2009 and 2013. Linear and logistic regression were used to model the ...
Hobohm C C Department of Neurology, University of Leipzig, Leipzig, - - 2014
Intracerebral hemorrhage (ICH) remains a serious complication in ischemic stroke patients undergoing systemic thrombolysis. Here, we examined whether the risk of treatment-associated hemorrhage can be predicted from magnetic resonance imaging (MRI) using fluid-attenuated inversion recovery (FLAIR) and diffusion-weighted imaging (DWI) within 3 h after symptom onset. In this single-center observational study ...
Patel Kunal S KS Department of Neurological Surgery, Weill Cornell Medical College, New York Presbyterian Hospital, New York, - - 2014
Controversy exists over the utility of early post-operative magnetic resonance imaging (MRI) after transsphenoidal pituitary surgery for macroadenomas. We investigate whether valuable information can be derived from current higher resolution scans. Volumetric MRI scans were obtained in the early (<10 days) and late (>30 days) post-operative periods in a series ...
Corcuera-Solano I I From the Department of Neuroradiology, Mount Sinai Medical Center, One Gustave L. Levy Place, New York, New - - 2014
Despite common use of CTP to assess cerebral hemodynamics in the setting of ischemia, concerns over radiation exposure remain. Our aim was to evaluate the efficacy of an adaptive 70-kVp (peak) whole-brain CTP protocol with variable sampling intervals and extended duration against an established fixed-sampling, limited-period protocol at 80 kVp. ...
Suk Heung-Il HI Department of Radiology and Biomedical Research Imaging Center (BRIC), University of North Carolina at Chapel Hill, NC, - - 2014
For the last decade, it has been shown that neuroimaging can be a potential tool for the diagnosis of Alzheimer's Disease (AD) and its prodromal stage, Mild Cognitive Impairment (MCI), and also fusion of different modalities can further provide the complementary information to enhance diagnostic accuracy. Here, we focus on ...
Stinson Eric G EG Department of Radiology, Mayo Clinic, MR Research Laboratory, Rochester, Minnesota, - - 2014
The purpose of this work is to compare the behavior of the signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR) in contrast-enhanced MR angiography with background suppression performed by either a Dixon-type or subtraction-type method. Theoretical expressions for the SNR and CNR for both background suppression techniques were derived. The theoretical ...
Zimmerman Stefan L SL From the *Department of Radiology, and †Johns Hopkins GeneSTAR Research Program, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, - - 2014
For dual-source cardiac computed tomography (CT) scans without heart rate (HR) control, the influence of body habitus on quality is uncertain. We evaluated study quality across a range of HRs and body size. One hundred sixty subjects were randomly selected for 4 HR groups (<70, 70-79, 80-89, ≥90 beats per ...
Kaiser Scott P SP Department of Orthopaedic Surgery, University of California San Francisco, 500 Parnassus Avenue, MU-320W, San Francisco, CA 94143. E-mail address: - - 2014
Upper sacral segment dysplasia increases the risk of cortical perforation during iliosacral screw insertion. Dysmorphic sacra have narrow and angled upper osseous corridors. However, there is no validated definition of this anatomic variation. We hypothesized that pelves could be quantitatively grouped by anatomic measurements.METHODS: One hundred and four computed tomography ...
Pfitzner Tilman T Center for Musculoskeletal Surgery-Orthopedic Department, Charité-Universitätsmedizin Berlin, Berlin, - - 2014
Patient-specific instrumentation in TKA has the proposed benefits of improving coronal and sagittal alignment and rotation of the components. In contrast, the literature is inconsistent if the use of patient-specific instrumentation improves alignment in comparison to conventional instrumentation. Depending on the manufacturer, patient-specific instrumentation is based on either MRI or ...
Haack Søren S Department of Clinical Engineering, Aarhus University Hospital , Aarhus , - - 2014
Background. Geometrical distortion is a major obstacle for the use of echo planar diffusion-weighted magnetic resonance imaging (DW-MRI) in planning of radiotherapy. This study compares geometrical distortion correction methods of DW-MRI at time of brachytherapy (BT) in locally advanced cervical cancer patients. Material and methods. In total 21 examinations comprising ...
Yildirim Duzgun D Department of Radiology, Centermed Advanced Imaging Center , Istanbul , Turkey - - 2014
Abstract Purpose: Urinary stones are common and can be diagnosed with computed tomography (CT) easily. In this study, we aimed to specify the opacity characteristics of various types of calcified foci that develop through the urinary system by using an image analysis program. With this method, we try to differentiate ...
Werner René R Department of Computational Neuroscience, University Medical Center Hamburg-Eppendorf, Germany. Institute of Medical Informatics, University of Lübeck, - - 2014
Accurate and robust estimation of motion fields in respiration-correlated CT (4D CT) images, usually performed by non-linear registration of the temporal CT frames, is a precondition for the analysis of patient-specific breathing dynamics and subsequent image-supported diagnostics and treatment planning.In this work, we present a comprehensive comparison and evaluation study ...
Savio Sami S Department of Electronics and Communications Engineering, Tampere University of Technology, Tampere, Finland Department of Radiology, Tampere University Hospital, Tampere, Finland - - 2014
This paper addresses two subtypes of multiple sclerosis (MS), primary progressive multiple sclerosis (PPMS) and relapsing-remitting multiple sclerosis (RRMS). The separation of PPMS and RRMS is challenging in certain cases. To quantitatively determine MS subtypes using texture analysis (TA) and diffusion tensor imaging (DTI). T1-weighted (T1W) magnetic resonance imaging (MRI) ...
Allen Brian C BC Department of Radiology, Medical Center Boulevard, Wake Forest University School of Medicine, Winston-Salem, NC, 27157-1088, USA, - - 2014
To estimate the incidence of missed gastroduodenal ulcers on routine abdominal computed tomography (CT) and identify findings and methods to improve sensitivity of CT interpretation for peptic ulcers. This is a retrospective chart and imaging review. Two blinded readers independently reviewed CTs performed within 7 days prior to endoscopy of 114 ...
Jovicich Jorge J Center for Mind Brain Sciences, University of Trento, Trento, Italy. Electronic address: - - 2014
Large-scale longitudinal neuroimaging studies with diffusion imaging techniques are necessary to test and validate models of white matter neurophysiological processes that change in time, both in healthy and diseased brains. The predictive power of such longitudinal models will always be limited by the reproducibility of repeated measures acquired during different ...
Vasylechko Serge S Biomedical Image Analysis Group, Department of Computing, Imperial College London, United - - 2014
The aim of this study was to determine T2* values for the fetal brain in utero and to compare them with previously reported values in preterm and term neonates. Knowledge of T2* may be useful for assessing brain development, brain abnormalities, and for optimizing functional imaging studies. Maternal respiration and ...
Hong Yoo Jin YJ Department of Radiology and Research Institute of Radiological Science, Severance Hospital, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul, 120-752, - - 2014
Although intra-cardiac masses are rare, diagnosis and refined characterization of these masses are important because of the different therapeutic strategies used to treat these lesions. The purpose of this study was to evaluate the diagnostic value of dual-energy cardiac computed tomography (CCT) for differentiating cardiac myxomas from thrombi. Our institutional ...
Colin Fabrice F Clinic of Orthopaedic & Traumatology Surgery, Nantes, - - 2014
Standard values that describe the morphology of the subtalar (ST) joint have previously been obtained from cadaveric studies or by using conventional unloaded radiographs. It is known that these parameters differ significantly from those measured in vivo and in loaded images, limiting the diagnostic value of the previously published morphological ...
Geisel Dominik D Klinik für Radiologie, Campus Virchow-Klinikum, Charité, Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany, - - 2014
To correctly display the left and right liver lobe separately on dynamic projection scintigraphy, it is essential to adjust the collimator to the angle of the plane between the two liver lobes. We propose an optimized protocol for separating left and right liver lobe in (99m)Tc-mebrofenin hepatobiliary scintigraphy in a ...
Grueneisen Johannes J From the *Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, University of Duisburg-Essen, Essen; †Department of Diagnostic and Interventional Radiology, University Hospital Dusseldorf, University of Dusseldorf, Dusseldorf; ‡The Erwin L. Hahn Institute for Magnetic Resonance Imaging, Departments of §Obstetrics and Gynecology, and ‚ą•Nuclear Medicine, University Hospital Essen, University of Duisburg-Essen, Essen, - - 2014
The objective of this study was to assess the diagnostic value of integrated positron emission tomography/magnetic resonance imaging (PET/MRI) for whole-body staging of patients with recurrent gynecological pelvic malignancies, in comparison to whole-body MRI alone. The study was approved by the local institutional ethics committee. Written informed consent was obtained ...
Chiang Sharon S Department of Statistics, Rice University, Houston, Texas, - - 2014
To compare the performance of computer-automated diagnosis using functional magnetic resonance imaging (fMRI) interictal graph theory (CADFIG) to that achieved in standard clinical practice with MRI, for lateralizing the affected hemisphere in temporal lobe epilepsy (TLE). Interictal resting state fMRI and high-resolution MRI were performed on 14 left and 10 ...
Cooper Rachel R Department of Clinical Oncology, St James's Institute of Oncology, Leeds, - - 2014
Hybrid magnetic resonance imaging/computerized tomography (MRI/CT) planning for high-dose-rate (HDR) brachytherapy in cervical cancer with MR/CT fusion for the first fraction followed by CT for fraction 2 and 3 is used at our center. The aim of this study is to evaluate the position of applicator intrauterine tube (IU) in ...
Velthuis S S Department of Radiology,Diakonessenhuis Utrecht,The - - 2014
Objective: To determine the value of non echo planar, diffusion-weighted magnetic resonance imaging for detection of residual and recurrent middle-ear cholesteatoma after combined-approach tympanoplasty. Method: The magnetic resonance imaging findings after primary surgery for cholesteatoma were compared with intra-operative findings at 'second-look' surgery or with clinical follow-up findings. Results: Forty-eight ...
Romani Rossana R Department of Neurosurgery, Huashan Hospital, Fudan University, 12#, Wulumuqi Zhong Road, 200040, Shanghai, People's Republic of China, - - 2014
The ability of preoperative MRI-sequences to predict the consistency of intracranial meningiomas has not yet been clearly defined. We aim to demonstrate that diffusion tensor imaging (DTI) improves the prediction of intracranial meningiomas consistency. We prospectively studied 110 meningioma patients operated on in a single center from March 1st to ...
Paproki Anthony A The Australian e-Health Research Centre, CSIRO Computational Informatics, Royal Brisbane and Women's Hospital, Herston QLD 4029, Australia; School of Information Technology and Electrical Engineering, The University of Queensland, St Lucia, QLD 4027, Australia. Electronic address: - - 2014
To validate an automatic scheme for the segmentation and quantitative analysis of the medial (MM) and lateral meniscus (LM) in magnetic resonance (MR) images of the knee. We analysed sagittal water-excited dual-echo steady-state MR images of the knee from a subset of the Osteoarthritis Initiative cohort. The MM and LM ...
Carlson Helen L HL Alberta Children's Hospital, 2888 Shaganappi Tr NW, Calgary, AB T3B 6A8, Canada; Alberta Children's Hospital Research Institute (ACHRI), Room 293, Heritage Medical Research Building, 3330 Hospital Drive NW, Calgary, AB T2N 4N1, Canada. Electronic address: - - 2014
Diffusion tensor imaging (DTI) tractography is useful for isolating white matter (WM) trajectories and exploring microstructural integrity. Tractography can be performed on atypical brain anatomy when landmarks are malformed or displaced but has been criticized for its subjectivity even when investigators have advanced anatomical knowledge. Also, little is known about ...
Korhonen Juha J Clinical Research Institute Helsinki University Central Hospital Ltd , Helsinki , - - 2014
Background. This work evaluates influences of susceptibility-induced bone outline shift and perturbations, and bone segmentation errors on external radiotherapy dose calculation accuracy in magnetic resonance imaging (MRI)-based pseudo-computed tomography (CT) images of the male pelvis. Material and methods. T1/T2*-weighted fast gradient echo, T1-weighted spin echo and T2-weighted fast spin echo ...
Yoon Jeong Hee JH From the Departments of Radiology (J.H.Y., J.M.L., I.J., E.S.L., J.Y.S., S.K.J., J.K.H., B.I.C.) and Pathology (K.B.L.), Seoul National University Hospital, 101 Daehak-ro, Jongno-gu, Seoul 110-744, Korea; and Institute of Radiation Medicine, Seoul National University College of Medicine, Seoul, Korea (J.M.L., J.K.H., - - 2014
Purpose To compare magnetic resonance (MR) elastography and ultrasonographic shear wave elastography (SWE) for the staging of hepatic fibrosis (HF) in the same individuals. Materials and Methods This prospective study was approved by the institutional review board, and informed consent was obtained from all patients. The technical success of and ...
Kwon Heon-Ju HJ Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Asanbyeongwon-gil 86, Songpa-ku, Seoul, 138-736, - - 2014
To identify imaging characteristics that differentiate small (≤2 cm) HCCs from small (≤2 cm) benign nodules in cirrhotic liver on gadoxetic acid-enhanced and diffusion-weighted (DW) magnetic resonance (MR) images. On gadoxetic acid-enhanced and DW MR images, we analysed signal intensity of 222 small HCCs and 61 benign nodules (diameter, 0.5-2 cm) at each ...
Didier Ryne A RA Department of Diagnostic Radiology, DC7R, Oregon Health & Science University, 3181 S.W. Sam Jackson Park Road, Portland, OR, 97239, - - 2014
Iterative reconstruction technique has been proposed as a means of reducing patient radiation dose in pediatric CT. Yet, the effect of such reductions on diagnostic accuracy has not been thoroughly evaluated. This study compares accuracy of diagnosing pediatric acute appendicitis using contrast-enhanced abdominopelvic CT scans performed with traditional pediatric weight-based ...
Helbren Emma E From the Centre for Medical Imaging (E.H., S.T., S.H.) and Centre for Medical Image Computing (H.R., T.H., D.H.), University College London, 3rd Floor East, 250 Euston Road, London NW1 2PG, England; and Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, Wis - - 2014
Purpose To evaluate the accuracy of a method of automatic coregistration of the endoluminal surfaces at computed tomographic (CT) colonography performed on separate occasions to facilitate identification of polyps in patients undergoing polyp surveillance. Materials and Methods Institutional review board and HIPAA approval were obtained. A registration algorithm that was ...
Kanda Mitsuro M Department of Gastroenterological Surgery (Surgery II), Nagoya University Graduate School of Medicine, Nagoya, - - 2014
Postoperative pancreatic fistula (POPF) after pancreatoduodenectomy (PD) leads to prolonged hospitalization and potentially fatal complications. We sought to determine whether estimated pancreatic parenchymal remnant volume (EPPRV) on preoperative computed tomography (CT) predicts clinically relevant POPF. This retrospective study included 246 patients who underwent PD between 2008 and 2013. Pancreatic thickness, ...
Fudaba H H From the Department of Neurosurgery, Oita University Faculty of Medicine, Oita, Japan. - - 2014
Pulsed arterial spin-labeling, DTI, and MR spectroscopy provide useful data for tumor evaluation. We evaluated multiple parameters by using these pulse sequences and the Ki-67 labeling index in newly diagnosed supratentorial gliomas. All 32 patients, with grade II (3 each of diffuse astrocytoma, oligodendroglioma, and oligoastrocytoma), grade III (3 anaplastic ...
Smit K K Department of Radiotherapy, University Medical Center Utrecht, Heidelberglaan 100, 3584 CX, Utrecht, The - - 2014
The MR-linac is a hybrid MRI radiotherapy system allowing dose delivery in a 1.5 T magnetic field. This paper presents the design and performance of a prototype MR-linac compatible scanning water phantom. Since a scanning water phantom requires dose detectors, the performance air-filled ionization chambers in the magnetic field was ...
Sheng Lin L Department of Interventional Ultrasound, Yuquan Hosiptal, Tsinghua University, No. 5 of Shijingshan Road, Shijingshan District, Beijing, 100049, China, - - 2014
Microwave ablation is used for the treatment of hypersplenism. Image guidance and ablation volume assessment is important to ensure that the ablation is successful. The accuracy of 3D ultrasound (US) and magnetic resonance imaging (MRI) in determining the parameters for microwave ablation were compared in a canine splenomegaly model. Microwave ...
Näsvall P P Department of Surgery, Sunderby Hospital/Umeå University, 97180, Luleå, Sweden, - - 2014
Since there are no reliable investigative tools for imaging parastomal hernia, new techniques are needed. The aim of this study was to assess the validity of intrastomal three-dimensional ultrasonography (3D) as an alternative to CT scanning for the assessment of stomal complaints. Twenty patients with stomal complaints, indicating surgery, were ...
Sun Phillip Zhe PZ Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA, 02129, - - 2014
Chemical exchange saturation transfer (CEST) MRI is sensitive to dilute proteins and peptides as well as microenvironmental properties. However, the complexity of the CEST MRI effect, which varies with the labile proton content, exchange rate and experimental conditions, underscores the need for developing quantitative CEST (qCEST) analysis. Towards this goal, ...
Ozkan Seda S Department of Emergency Medicine, Erciyes University Medical School, Kayseri, - - 2014
Objective: In this study, we aim to compare the relationship between the Alvarado score, ultrasonography, and multislice computerized tomography (CT) findings used for the diagnosis of the patients who presented to our emergency unit with clinical features suggestive of acute appendicitis. Materials and Methods: Seventy-four patients operated with the diagnosis ...
Garrett K Gabriel KG Department of Radiology and Radiological Science, Medical University of South Carolina, Charleston, South - - 2014
To evaluate the performance of radiology residents in the interpretation of on-call, emergency "triple-rule-out" (TRO) computed tomographic (CT) studies in patients with acute chest pain. The study was institutional review board-approved and Health Insurance Portability and Accountability Act compliant. Data from 617 on-call TRO studies were analyzed. Dedicated software enables ...
Boyrie Sabrina S Department of Radiotherapy, Institut Claudius Regaud, Toulouse, France. Electronic address: - - 2014
To investigate the impact of dose-volume histograms parameters on local control of three-dimensional (3D) image-based pulsed dose-rate brachytherapy (BT). Within a French multicentric prospective study, the data of the 110 patients treated for cervical cancer with external beam radiotherapy followed by 3D image-based and optimized pulsed dose-rate BT were analyzed. ...
Lu Michael T MT 1 Department of Radiology and Biomedical Imaging, University of California-San Francisco, San Francisco, - - 2014
OBJECTIVE. The purpose of this study is to assess whether providing a formal report for outside imaging reduces repeat imaging. MATERIALS AND METHODS. From January 1, 2006, through December 31, 2011, patients transferred with an abdominal CT from another ("outside") institution that was imported to our institution's PACS within 60 ...
Bae Yeonho Y Department of Veterinary Medical Imaging, College of Veterinary Medicine, Chonnam National University, Gwangju, 500-757, South - - 2014
Objective-To determine the effect of region of interest (ROI) setting and slice thickness on trabecular bone mineral density (BMD) measured with quantitative CT in dogs. Animals-14 healthy Beagles. Procedures-CT of the lumbar vertebrae and a quantitative CT phantom was performed. The BMD of trabecular bone was measured from L1 to ...
Nardos Rahel R From the *Division of Female Pelvic Medicine and Reconstructive Surgery, Department of Obstetrics and Gynecology, Oregon Health & Science University, Kaiser Permanente; †Department of Obstetrics and Gynecology, and ‡Division of Female Pelvic Medicine and Reconstructive Surgery, Department of Obstetrics and Gynecology, Oregon Health & Science University, Portland, - - 2014
The objective of this study is to compare levator hiatus measurements between pelvic magnetic resonance imaging (MRI) and pelvic ultrasound (US) imaging modalities. We performed pelvic MRI and 3-dimensional US in 37 asymptomatic nulliparous women. For the MRI protocols, we performed axial and sagittal sequences at rest. We then obtained ...
Iltis Isabelle I Center for Magnetic Resonance Research, University of Minnesota, Minneapolis, MN, - - 2014
The outcome of systemic and local therapies (e.g. chemotherapy, radiotherapy, surgery, focal ablation) for prostate cancer can be significantly improved by using tumor-specific adjuvants prior to treatment ("preconditioning"). We propose to use dynamic contrast enhanced magnetic resonance imaging (DCE-MRI) to monitor the in vivo response of a mouse model of ...
Hocaoglu Elif E From the Department of Radiology, Bakirkoy Dr. Sadi Konuk Research and Training Hospital, Istanbul, - - 2014
The purpose of this study was to retrospectively describe demographic characteristics and computed tomography (CT) imaging findings of craniofacial fibrous dysplasia (FD). Between February 2010 and February 2013, we retrospectively studied 64 patients described as FD at CT imaging. Site of involvement and CT imaging findings of craniofacial FD were ...
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