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Weigel Matthias M Department of Radiology, Medical Physics, University Medical Center Freiburg, Freiburg, Germany; Radiological Physics, University of Basel Hospital, Basel, - - 2014
The extended phase graph (EPG) concept represents a powerful tool for depicting and understanding the magnetization response of a broad variety of MR sequences. EPGs focus on echo generation as well as on classification and use a Fourier based magnetization description in terms of "configurations states". The effect of gradients, ...
Law Joanna K JK Division of Gastroenterology and Hepatology, The Sol Goldman Pancreatic Cancer Research Center, The Johns Hopkins Medical Institutions, 1800 Orleans St, Suite 7125 J, Baltimore, MD, 21205, USA, - - 2014
Solid-pseudopapillary neoplasms (SPNs) are rare pancreatic tumors, which occur most frequently in young women and are associated with an excellent prognosis. Computed tomography (CT) is used most commonly to identify these lesions, but there are few studies evaluating the role of endoscopic ultrasound (EUS) and fine needle aspiration (EUS-FNA) in ...
Kim Tae Kyoung TK Tae Kyoung Kim, Hyun-Jung Jang, Department of Medical Imaging, Toronto General Hospital, University of Toronto, Toronto ON M5G 2N2, - - 2014
Contrast-enhanced ultrasound (CEUS) using microbubble contrast agents are useful for the diagnosis of the nodules in liver cirrhosis. CEUS can be used as a problem-solving method for indeterminate nodules on computed tomography (CT) or magnetic resonance imaging (MRI) or as an initial diagnostic test for small newly detected liver nodules. ...
Pahwa Anokh A Department of Radiological Sciences, David Geffen School of Medicine at UCLA, Olive View-UCLA Medical Center, 14445 Olive View Drive, Sylmar, CA, 91342, USA, - - 2014
Dynamic contrast-enhanced CT scan and MRI are essential for preoperative diagnosis of hepatocellular carcinoma (HCC), using the established Barcelona and AASLD criteria, which have been validated in only a few reports. The aim of this study is to retrospectively assess the diagnostic performance of these criteria in diagnosing or excluding ...
Kim Eunhee E 1 Department of Radiology, Seoul National University College of Medicine, Seoul National University Bundang Hospital, 166 Gumi-ro, Bundang-gu, Seongnam-si, Gyeonggi-do 463-707, - - 2014
OBJECTIVE. Both jugular venous reflux (JVR) and cavernous dural arteriovenous fistula (DAVF) manifest as abnormal venous signal intensities on time-of-flight (TOF) MR angiography (MRA). We investigated brain MRI and MRA findings that might differentiate JVR from cavernous DAVF. MATERIALS AND METHODS. Forty-one patients with abnormal venous signal intensities on TOF ...
Berberat Jatta J 1 Department of Radiology, Cantonal Hospital Aarau, Tellstrasse, CH-5001 Aarau, - - 2014
OBJECTIVE. Our aim was to develop a robust method to differentiate calcification from hemorrhage in gliomas. Histopathologic examination was performed to validate hemorrhage and calcification. CONCLUSION. Phase images from eleven patients with glioma yielded statistically significant phase-shift values for calcification and hemorrhage compared with normal brain, whereas CT showed substantial ...
Trattner Sigal S Department of Medicine, Division of Cardiology, Columbia University Medical Center and New York-Presbyterian Hospital, New York, New York - - 2014
Effective dose (ED) is a widely used metric for comparing ionizing radiation burden between different imaging modalities, scanners, and scan protocols. In computed tomography (CT), ED can be estimated by performing scans on an anthropomorphic phantom in which metal-oxide-semiconductor field-effect transistor (MOSFET) solid-state dosimeters have been placed to enable organ ...
Fischer Woodward W WW Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA - - 2014
Many aspects of Earth's early sulfur cycle, from the origin of mass-anomalous fractionations to the degree of biological participation, remain poorly understood-in part due to complications from postdepositional diagenetic and metamorphic processes. Using a combination of scanning high-resolution magnetic superconducting quantum interference device (SQUID) microscopy and secondary ion mass spectrometry ...
Zhu Qingqiang Q Department of Medical Imaging, Subei People's Hospital, Medical School of Yangzhou University, Yangzhou, Jiangsu 225001, - - 2014
There are relatively few reports focusing on clinical and multi-slice CT (MSCT) imaging findings of mucinous tubular and spindle cell carcinoma (MTSCC). Our study aimed to characterize the clinical and MSCT imaging features of MTSCC. The imaging findings in 17 patients with MTSCC by MSCT were retrospectively studied. MSCT was ...
Choi Jin-Young JY Department of Radiology, Research Institute of Radiological Science, Yonsei University College of Medicine, Seoul, - - 2014
To investigate whether histogram analysis of the hepatobiliary phase on gadoxetate enhanced-MRI could be used as a quantitative index for determination of liver cirrhosis. A total of 63 patients [26 in a normal liver function (NLF) group and 37 in a cirrhotic group] underwent gadoxetate-enhanced MRI, and hepatobiliary phase images ...
Barr Daniel C DC From the Department of Radiology/MRI, University of Michigan Health System, Ann Arbor, - - 2014
Cirrhosis is the main risk factor for the development of hepatocellular carcinoma (HCC). The major causative factors of cirrhosis in the United States and Europe are chronic hepatitis C infection and excessive alcohol consumption with nonalcoholic steatohepatitis emerging as another important risk factor. Magnetic resonance imaging is the most sensitive ...
Schmitt F C FC Department of Neurology, Otto-von-Guericke University, Leipziger Str. 44, D-39120 Magdeburg, Germany. Electronic address: - - 2014
Pre-operative tractography of the optic radiation (OR) has been advised to assess the risk for postoperative visual field deficit (VFD) in certain candidates for resective epilepsy surgery. Diffusion tensor imaging (DTI) tractography relies on a precise anatomical determination of start and target regions of interest (ROIs), such as the lateral ...
Aran Shima S Department of Radiology, Massachusetts General Hospital, Harvard Medical School, 55 Fruit street, Founders Building, Room 210, Boston, MA, 02114, - - 2014
Recent advances in computed tomography (CT) technology allow for acquisition of two CT datasets with different X-ray spectra. There are different dual-energy computed tomography (DECT) technical approaches such as: the dual-source CT, the fast kilovoltage-switching method, and the sandwich detectors technique. There are various postprocessing algorithms that are available to ...
Lv Xiao-Fei XF Imaging and Interventional Radiology, Sun Yat-sen University Cancer Center; State Key Laboratory of Oncology in South China; Collaborative Innovation Center for Cancer Medicine, Guangzhou, PR - - 2014
A synovial sarcoma arising from the kidney is extremely rare. To date, few data are available on their radiological features. To identify the computer tomography (CT) imaging findings of primary renal synovial sarcomas (PRSSs). Five cases of PRSS confirmed by histopathological and cytogenetic studies were retrospectively analyzed. All patients had ...
Zhu Zheng Z Department of Diagnostic Radiology, Cancer Institute & Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, - - 2014
Objective: To display and analyse the imaging features of myomatous hepatic angiomyolipomas. Methods: The imaging features of 14 patients with pathologically-proven MHAMLs were reviewed retrospectively. Results: MHAMLs were surgically resected in the 14 patients (10 females, 4 males; age 27-64 years, mean 45 years), all of whom had negative hepatitis ...
Park Vivian Youngjean VY Department of Radiology, Research Institute of Radiological Science, Yonsei University, College of Medicine, South - - 2014
The dynamic enhancement pattern of HCCs smaller than 3cm in diameter on gadoxetic acid-enhanced magnetic resonance imaging (MRI) have not been extensively investigated. We aimed to evaluate the dynamic enhancement patterns of small HCCs (≤3cm) on gadoxetic acid-enhanced magnetic resonance imaging (MRI) and compare enhancement patterns with multiphasic multidetector computed ...
Allman M S MS National Institute of Standards and Technology, 325 Broadway Street, Boulder, Colorado 80305-3328, - - 2014
We use a flux-biased radio frequency superconducting quantum interference device (rf SQUID) with an embedded flux-biased direct current SQUID to generate strong resonant and nonresonant tunable interactions between a phase qubit and a lumped-element resonator. The rf SQUID creates a tunable magnetic susceptibility between the qubit and resonator providing resonant ...
Grieser Christian C Klinik für Radiologie, Campus Virchow-Klinikum, Charité-Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany, - - 2014
Evaluation of enhancement characteristics of histopathologically confirmed focal nodular hyperplasias (FNHs) and hepatocellular adenomas (HCAs) with gadoxetic acid-enhanced MRI. Sixty-eight patients with 115 histopathologically proven lesions (FNHs, n = 44; HCAs, n = 71) examined with gadoxetic acid-enhanced MRI were retrospectively enrolled (standard of reference: surgical resection, n = 53 patients (lesions: FNHs, n = 37; HCAs, n = 53); ...
Mizuma Atsushi - - 2014
Objectives: Atherosclerotic stenosis of the middle cerebral artery (MCA) is one of the causes of ischemic stroke, but aside from investigations using magnetic resonance angiography (MRA), studies evaluating stenosis are rare. The purpose of this study was to assess dynamic changes of MCA cross section between the systolic and diastolic ...
Yin Ziying Z The Richard and Loan Hill Department of Bioengineering, University of Illinois at Chicago, Chicago, Illinois, - - 2014
To present a new technique for concurrent MR elastography (MRE) and diffusion MRI: diffusion-MRE (dMRE). In dMRE, shear wave motion and MR signal decay due to diffusion are encoded into the phase and magnitude components of the MR signal by using a pair of bipolar gradients for both motion-sensitization and ...
Graziani Rossella R Department of Radiology, "G.B. Rossi" Hospital, University of Verona, P.le L.A. Scuro 11, 37134, Verona, Italy, - - 2014
Multidetector-row computed tomography (MDCT) and magnetic resonance (MR) imaging are currently the most frequently performed imaging modalities for the study of pancreatic disease. In cases of suspected autoimmune pancreatitis (AIP), a dynamic quadriphasic (precontrast, contrast-enhanced pancreatic, venous and late phases) study is recommended in both techniques. In the diffuse form ...
Wapler Matthias C MC Laboratory for Microactuators, Department of Microsystems Engineering - IMTEK, University of Freiburg, - - 2014
We present the results of a systematic measurement of the magnetic susceptibility of small material samples in a 9.4 T MRI scanner. We measured many of the most widely used materials in MR engineering and MR micro technology, including various polymers, optical and substrate glasses, resins, glues, photoresists, PCB substrates ...
Alhilali L L From the Department of Radiology, University of Pittsburgh School of Medicine, Pittsburgh, - - 2014
Our aim was to compare the CT and PET/CT imaging features of osteoradionecrosis with those of recurrent disease after treatment of head and neck malignancy. We retrospectively reviewed maxillofacial and neck CT scans obtained for suspected osteoradionecrosis or tumor recurrence for the presence of the following: 1) discrete solid mass, ...
Kwon Oh In - - 2014
The spectroscopic conductivity distribution of tissue can help to explain physiological and pathological status. Dual frequency conductivity imaging by combining Magnetic Resonance Electrical Property Tomography (MREPT) and Magnetic Resonance Electrical Impedance Tomography (MREIT) has been recently proposed. MREIT can provide internal conductivity distributions at low frequency (below 1 kHz) induced ...
Skovgaard Pernille Anastasia PA University of Copenhagen, Faculty of Science, Rolighedsvej23, 1958, Frederiksberg C, - - 2014
The role of endocellulases and endoxylanase during liquefaction and saccharification of hydrothermally pretreated wheat straw was studied. The use of a flow-loop setup with in-line magnetic resonance imaging (MRI) enabled frequent measurements of viscosity at 55°C during saccharification at 6 % total solids content. Viscosity data were complemented with off-line ...
Colagrande Stefano S Dipartimento di Scienze Biomediche Sperimentali e Cliniche, Struttura Complessa di Radiodiagnostica (SOD 2), Università di Firenze, Florence, Italy, - - 2014
An increase has been observed not only in the absolute number of CT examinations but also in the length of coverage and number of scanning phases, with the result that exposure to ionising radiation from CT is becoming an increasingly serious problem. The extent of the problem is not entirely ...
Martinon Edouard E Service de neuroradiologie, hôpital Bocage, CHU de Dijon, 2, boulevard Maréchal-de-Lattre-de-Tassigny, 21079 Dijon, France. Electronic address: - - 2014
Collateral circulation plays an important role in the clinical and radiological outcome after acute ischemic stroke. Several modalities are used to evaluate these alternative pathways with a growing interest in recent years. We conducted a literature review of studies evaluating collaterals at the acute phase of a carotid territory ischemic ...
Sherrah Andrew G AG Sydney Medical School, University of Sydney, Australia; The Baird Institute, Royal Prince Alfred Hospital, Sydney, - - 2014
Several imaging modalities are utilised in the assessment of disease progression in chronic aortic dissection. We present the case of a 66 year-old male who underwent ascending aorta repair for Stanford type A aortic dissection. On follow-up the persisting dissection of the descending thoracic aorta was observed to regress on ...
Demir Yusuf Y aDepartment of Nuclear Medicine, School of Medicine, Yuzuncuyil University, Van Departments of bNuclear Medicine cChest Disease dChest Surgery, School of Medicine, Dokuz Eylül University, Izmir, - - 2014
Our objective was to evaluate the diagnostic role of dual-phase F-fluorodeoxyglucose (F-FDG) PET/computed tomography (CT) in the characterization of solitary pulmonary nodules (SPNs). A total of 48 SPNs in 48 patients were included in this retrospective study. The final diagnosis was confirmed histopathologically or by follow-up CT. Two PET/CT scans ...
Araki Tetsuro T 1 Department of Radiology, Brigham and Women's Hospital, Boston, - - 2014
OBJECTIVE. The purpose of this article is to investigate the imaging characteristics of pathologically proven thymic hyperplasia and to identify features that can differentiate true hyperplasia from lymphoid hyperplasia. MATERIALS AND METHODS. Thirty-one patients (nine men and 22 women; age range, 20-68 years) with pathologically confirmed thymic hyperplasia (18 true ...
Xie Xueqian X 1 Department of Radiology, University of Groningen, University Medical Center Groningen, PO Box 30.001, Groningen 9700 RB, The - - 2014
OBJECTIVE. The purpose of this study is to evaluate observer detection and volume measurement of small irregular solid artificial pulmonary nodules on 64-MDCT in an anthropomorphic thoracic phantom. MATERIALS AND METHODS. Forty in-house-made solid pulmonary nodules (lobulated and spiculated; actual volume, 5.1-88.4 mm(3); actual CT densities, -51 to 157 HU) ...
Hetterich Holger H From the Institute of Clinical Radiology (H.H., S.F., F.B., S.A., S.W., M.R., T.S.), Center for Neuropathology (U.S.), and Institute of Anatomy (S.A.), Ludwig-Maximilians-University Hospital, Pettenkoferstrasse 8a, 80336 Munich, Germany; {Department of Physics and Institute for Technical Medicine}, Technische Universität München, Garching, Germany (M.W., J.H., A.H., F.P.); and Institute of Materials Research, Helmholtz-Zentrum, Geesthacht, Germany - - 2014
Purpose To evaluate the potential of phase-contrast computed tomography (CT) for atherosclerotic plaque imaging in human carotid arteries in an experimental ex vivo study. Materials and Methods The study was approved by the institutional review board, and informed consent was obtained from the patients' relatives. Seven postmortem human carotid artery ...
Vyas Urvi U Department of Radiology, Stanford University, Stanford, California - - 2014
Transcranial magnetic resonance-guided focused ultrasound surgery is a noninvasive technique for causing selective tissue necrosis. Variations in density, thickness, and shape of the skull cause aberrations in the location and shape of the focal zone. In this paper, the authors propose a hybrid simulation-MR-ARFI technique to achieve aberration correction for ...
Zhao Ling L College of Acupuncture and Tuina, Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, - - 2014
To investigate whether the neural representations underlying alternating two acupoint combinations (ACs) are the same or not. In this functional magnetic resonance imaging study, two sets of analgesia ACs were utilized, including Waiguan (TE5) and Qiuxu (GB40) for Group A, and Neiguan (PC6) and Taichong (LR3) for Group B, which ...
Heran Manraj Kanwal Singh MK *Department of Radiology, †Department of Ophthalmology and Visual Sciences, and ‡Department of Pathology and Laboratory Medicine, University of British Columbia and the Vancouver General Hospital, Vancouver, British Columbia, - - 2014
To describe the value and purpose of a new method of dynamic arterial and Valsalva-augmented venous phase CT angiographic assessment of vascular orbital lesions. Description of a dynamic arterial and Valsalva-augmented venous phase multidetector CT protocol currently being used at the institution of the authors for investigation of orbital vascular ...
Chae Seung Hoon SH From the *Department of Radiology, and †Institute of Radiation Medicine, Seoul National University Hospital, Seoul, - - 2014
To describe the magnetic resonance imaging spectrum of solid pseudopapillary tumors (SPTs), with an emphasis on solid SPTs. Thirty-two patients with proven SPTs with preoperative magnetic resonance were included. The SPTs were classified into 3 types: solid, cystic, and mixed; and 2 radiologists analyzed the images regarding the morphologic features ...
Demehri Shadpour S From the *Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, MD; and †Department of Radiology, University Hospitals Case Medical Center, Cleveland, - - 2014
With recent advances in multidetector computed tomography (MDCT) acquisition and reconstruction options, MDCT can now be used successfully for evaluating tendon abnormalities. In this article, MDCT protocol optimization for the imaging of tendons is underscored, and applications of MDCT for assessing tendon pathology are highlighted. Although our retrospective experience of ...
Mitchell Charles H CH From the *Department of Radiology, Johns Hopkins University, and †Department of Pathology, The Sol Goldman Pancreatic Cancer Research Center, Johns Hopkins University School of Medicine, Baltimore, - - 2014
Gallbladder cancer carries an extremely high mortality rate, with a 5-year survival rate as low as 12%. Survival is dependent on the diagnosis of these tumors in their earliest stages. This study sought to describe the clinical and imaging features of stages T1, T2, and T3 gallbladder tumors and to ...
Tortora Fabio F Department of Clinical and Experimental Medicine and Surgery, "F. Magrassi-A. Lanzara" Second University of Naples, c/o C.T.O, Colli Aminei Street, 21, 80131, Naples, Italy, - - 2014
In Graves' Ophthalmopathy, it is important to distinguish active inflammatory phase, responsive to immunosuppressive treatment, from fibrotic unresponsive inactive one. The purpose of this study is, first, to identify the relevant orbital magnetic resonance imaging signal intensities before treatment, so to classify patients according to their clinical activity score (CAS), ...
Yoon Jung-Hee JH 0000-0001-5152-6668 Department of Radiology, Inje University Haeundae Paik Hospital, Busan, - - 2014
We present two cases of adrenocortical oncocytomas that were well-delineated on multi-detector computed tomography and magnetic resonance imaging. The images showed a well-enhanced large mass with multiple stippled calcifications in a 10-yr-old girl who was consulted due to precocious puberty. A well-enhanced solid mass with necrotic components was incidentally noticed ...
Hallinan J T P D JT Department of Diagnostic Radiology, Tan Tock Seng Hospital, Novena, Singapore; Department of Diagnostic Radiology, National University Health System, 5 Lower Kent Ridge Road, 119074 Singapore. Electronic address: - - 2014
Contrast medium extravasation at computed tomography (CT) is an accurate indicator of active haemorrhage in pelvic trauma. When this is present, potentially lifesaving surgical or endovascular treatment should be considered. Identification of the site or territory of haemorrhage is helpful for the interventional radiologist as it allows for focused angiographic ...
Yu X-R XR Department of Radiology, Huashan Hospital, Fudan University, Shanghai, - - 2014
To retrospectively evaluate the criteria for discriminating infiltrative cholangiocarcinoma from benign common bile duct (CBD) stricture using three-dimensional dynamic contrast-enhanced (3D-DCE) magnetic resonance imaging (MRI) combined with magnetic resonance cholangiopancreatography (MRCP) imaging and to determine the predictors for cholangiocarcinoma versus benign CBD stricture. 3D-DCE MRI and MRCP images in 28 ...
Okada Masahiro M Department of Radiology, Faculty of Medicine, Kinki University, 377-2 Ohno-Higashi, Osaka-Sayama, Osaka, 589-8511, Japan, - - 2014
To investigate optimal flip angle (FA) of three-dimensional fat-suppressed T1-weighted image on Gd-EOB-DTPA-enhanced MRI. Forty-five patients with 35 hepatocellular carcinomas (HCCs) and 16 liver metastases (METs) were investigated. Signal-to-noise ratio (SNR), tumor-to-liver contrast (TLC) of HCC and MET, visual image quality (IQ) and lesion conspicuity (LeCo) were evaluated at hepatobiliary ...
Guimarães Marcos Duarte MD From the *Department of Imaging, AC Camargo Cancer Center, São Paulo; and †Department of Radiology, Universidade Federal do Rio de Janeiro, Petrópolis, - - 2014
A 48-year-old woman presented with a hard, painless mass in the left lower quadrant and no other significant complaint. Laboratory tests, including those for tumor markers, showed no significant abnormal value. CT showed an extraperitoneal mixed solid and cystic mass in the anterior abdominal wall, located anterocranial to and in ...
Wang Haiyan H Shandong Medical Imaging Research Institute, Shandong University, Jingwu Road No.324, Jinan, People's Republic of China, - - 2014
To analyze CT characteristics of primary clear cell carcinoma of the liver (PCCCL) and improve the current understanding and diagnose accuracy of the tumor. Pre- and post-contrast CT images of 19 patients with pathology proven PCCCL were retrospectively analyzed. The clinical data and CT findings as well as relevant literature ...
Matsushima Shigeru S Department of Diagnostic and Interventional Radiology, Aichi Cancer Center Hospital, 1-1 Kanokoden, Chikusa-ku, Nagoya 464-0021, Japan. Electronic address: - - 2014
To visualize liver uptake function using the uptake contrast-enhanced ratio in hepatobiliary phase (uptake CERH) magnetic resonance imaging. Thirty-seven patients with hepatocellular carcinoma (HCC) and 23 with metastatic liver cancer were evaluated. Hepatobiliary phase images were acquired 20min after an intravenous bolus injection of gadoxetic acid disodium. We assumed that ...
Komatsu Nobutoshi N First Department of Internal Medicine, University of Yamanashi, 1110, Shimokato, Chuo-shi, Yamanashi, Japan - - 2014
To investigate whether the patients with hypovascular liver nodules determined on the arterial phase and hypointensity on the hepatocyte phase gadoxetic acid-enhanced magnetic resonance imaging (hypovascular hypointense nodules) are at increased risk of hepatocarcinogenesis, we assessed subsequent typical hepatocellular carcinoma (HCC) development at any sites of the liver with and ...
Yamashita Keishi K Department of Surgery, Kitasato University School of Medicine, Asamizodai 2-1-1, Minami-ku, Sagamihara, Kanagawa, 252-0380, Japan, - - 2014
In the current study, we evaluated the efficacy of dual-phase three-dimensional (3D) CT angiography (CTA) in the assessment of the vascular anatomy, especially the right hepatic artery (RHA), before gastrectomy. The study initially included 714 consecutive patients being treated for gastric cancer. A dual-phase contrast-enhanced CT scan using 32-multi detector-row ...
Fu Jian J Beijing University of Aeronautics and Astronautics, 100191 Beijing, China. Electronic address: - - 2014
We report on the first experimental results of helical differential phase-contrast computed tomography (helical DPC-CT) with a laboratory X-ray tube source and a Talbot-Lau grating interferometer. The results experimentally verify the feasibility of helical data acquisition and reconstruction in phase-contrast imaging, in analogy to its use in clinical CT systems. ...
Guerrache Youcef Y Department of Radiology, Centre Pierre et Marie Curie, Place du 1er Mai, 16016 Alger, Algeria. Electronic address: - - 2014
Solid-pseudopapillary tumor (SPT) of the pancreas is a rare, low-grade malignancy, which mostly occurs in adolescent and young adult females. The goal of this study was to retrospectively analyze the magnetic resonance (MR) imaging presentation of SPT of the pancreas. We retrospectively reviewed the preoperative MR imaging examinations and the ...
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