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European Journal of Radiology

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https://www.readbyqxmd.com/read/28274619/pet-mri-of-the-thorax-abdomen-and-retroperitoneum-benefits-of-the-breathing-synchronized-scanning
#1
Jan Baxa, Eva Ferdova, Jiří Ferda
Hybrid imaging using various radiopharmaceuticals is currently essential not only in detection and therapy response monitoring of tumors, but also in assessment of inflammatory or systemic diseases. Combination of positron emission tomography (PET) and magnetic resonance imaging (MRI) is still relatively new method with great prospects of comprehensive assessment using anatomical and multiple functional information. However, benefits of PET/MRI in thorax, abdomen and retroperitoneum are not completely defined...
February 27, 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28283219/pet-mri-multiparametric-imaging-of-brain-tumors
#2
Jiří Ferda, Eva Ferdová, Ondřej Hes, Jan Mraček, Boris Kreuzberg, Jan Baxa
A combination of morphological imaging of the brain with microstructural and functional imaging provides a comprehensive overview of the properties of individual tissues. While diffusion weighted imaging provides information about tissue cellularity, spectroscopic imaging allows us to evaluate the integrity of neurons and possible anaerobic glycolysis during tumor hypoxia, in addition to the presence of accelerated synthesis or degradation of cellular membranes; on the other hand, PET metabolic imaging is used to evaluate major metabolic pathways, determining the overall extent of the tumor ((18)F-FET, (18)F-FDOPA, (18)F-FCH) or the degree of differentiation ((18)F-FDG, (18)F-FLT, (18)F-FDOPA and (18)F-FET)...
February 22, 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28262272/pet-mr-imaging-of-pelvic-malignancies
#3
Axel Wetter, Johannes Grueneisen, Lale Umutlu
Integrated PET/MRI is a new technology which allows simultaneous acquisition of positron emission tomography and magnetic resonance imaging data during one examination. The technique appears to be particularly appropriate for oncologic imaging of female and male pelvic malignancies, as these entities demand a high soft tissue contrast and might be further assessed metabolically with PET. The review article highlights recent developments of integrated PET/MRI in pelvic malignancies.
February 20, 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28238381/corrigendum-to-high-rate-of-unnecessary-thymectomy-and-its-cause-can-computed-tomography-distinguish-thymoma-lymphoma-thymic-hyperplasia-and-thymic-cysts-eurr-84-3-2015-524-533
#4
https://www.readbyqxmd.com/read/28237773/review-of-post-ischemic-stroke-imaging-and-its-clinical-relevance
#5
Leonard L L Yeo, Benjamin Y Q Tan, Tommy Andersson
In this day and age, multiple imaging modalities are available to the stroke physician in the post-treatment phase.The practical challenge for physicians who treat stroke is to evaluate the pros and cons of each technique and select the best choice for the situation. The choice of imaging modality remains contentious at best and varies among different institutions and centres. This is no simple task an there are many factors to consider, including the differential diagnosis which need to be evaluated, the availability and reliability of the imaging technique and time and expertise required to perform and interpret the scanning...
February 14, 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28132716/-18-f-fdg-pet-mri-in-lymphoma-patients
#6
Eva Ferdová, Jiří Ferda, Jan Baxa
The introduction of hybrid PET/MRI imaging using integrated systems into clinical practice has opened up the possibility of reducing the radiation dose from hybrid imaging by eliminating the contribution from computed tomography. Studies comparing the possibilities of PET/CT and PET/MRI imaging demonstrated it is possible to use the advantages of the high contrast resolution of magnetic resonance for soft tissue and bone marrow along with PET records in a quality comparable to PET/CT imaging. The significant feature for PET imaging in Hodgkińs lymphoma is that it is a tissue with high levels of radiopharmaceutical accumulation, which decreases proportionally after successful therapeutic effect, the effect of therapy is assessed using Deauville score system on interim examinations...
January 23, 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28131593/pet-mri-in-children
#7
Sergios Gatidis, Benjamin Bender, Matthias Reimold, Jürgen F Schäfer
During the past decade, combined PET/MRI has been translated from a basic technical concept to a clinical research tool and a clinically applied hybrid imaging modality. Numerous clinical and scientific applications have been proposed for this novel hybrid modality including oncologic, neurologic and cardiovascular imaging. Among these, PET/MRI in children has emerged as a key application, not only due to possible diagnostic advantages but also because of reduced radiation exposure compared to alternative techniques...
January 21, 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28034566/erratum-to-biparametric-3t-magnetic-resonance-imaging-for-prostatic-cancer-detection-in-a-biopsy-na%C3%A3-ve-patient-population-a-further-improvement-of-pi-rads-v2-eur-j-radiol-85-12-2016-2269-2274
#8
Arnaldo Stanzione, Massimo Imbriaco, Sirio Cocozza, Ferdinando Fusco, Giovanni Rusconi, Carmela Nappi, Vincenzo Mirone, Francesco Mangiapia, Arturo Brunetti, Alfonso Ragozzino, Nicola Longo
No abstract text is available yet for this article.
December 26, 2016: European Journal of Radiology
https://www.readbyqxmd.com/read/28267556/intra-and-inter-observer-reproducibility-of-global-and-regional-magnetic-resonance-feature-tracking-derived-strain-parameters-of-the-left-and-right-ventricle
#9
Björn Schmidt, Anastasia Dick, Melanie Treutlein, Petra Schiller, Alexander C Bunck, David Maintz, Bettina Baeßler
OBJECTIVES: To investigate the reproducibility of regional and global strain and strain rate (SR) parameters of both ventricles and to determine sample sizes for all investigated strain and SR parameters in order to generate a practical reference for future studies. MATERIALS AND METHODS: The study population consisted of 20 healthy individuals and 20 patients with acute myocarditis. Cine sequences in three horizontal long axis views and a stack of short axis views covering the entire left and right ventricle (LV, RV) were retrospectively analysed using a dedicated feature tracking (FT) software algorithm (TOMTEC)...
April 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28267555/time-to-enhancement-derived-from-ultrafast-breast-mri-as-a-novel-parameter-to-discriminate-benign-from-malignant-breast-lesions
#10
Roel D Mus, Cristina Borelli, Peter Bult, Elisabeth Weiland, Nico Karssemeijer, Jelle O Barentsz, Albert Gubern-Mérida, Bram Platel, Ritse M Mann
OBJECTIVES: To investigate time to enhancement (TTE) as novel dynamic parameter for lesion classification in breast magnetic resonance imaging (MRI). METHODS: In this retrospective study, 157 women with 195 enhancing abnormalities (99 malignant and 96 benign) were included. All patients underwent a bi-temporal MRI protocol that included ultrafast time-resolved angiography with stochastic trajectory (TWIST) acquisitions (1.0×0.9×2.5mm, temporal resolution 4.32s), during the inflow of contrast agent...
April 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28267554/is-gender-still-a-predisposing-factor-in-contrast-media-associated-adverse-drug-reactions-a-systematic-review-and-meta-analysis-of-randomized-trials-and-observational-studies
#11
Heeyoung Lee, Seungyeon Song, Yun-Kyoung Oh, WonKu Kang, Eunyoung Kim
OBJECTIVE: To evaluate the role of gender as a risk factor for developing contrast media-associated adverse drug reactions (CM-ADRs) by comparing the incidence of CM-ADR between male and female patients according to study design, ADR type, and computed tomography (CT) examination. MATERIAL AND METHODS: We systematically searched three electronic databases for eligible studies. In the studies included (n=18), we assessed effect estimates of the relative incidence of CM-ADR, analysed by experimental design, ADR type and CT examination...
April 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28267553/left-and-right-atrial-feature-tracking-in-acute-myocarditis-a-feasibility-study
#12
Anastasia Dick, Björn Schmidt, Guido Michels, Alexander C Bunck, David Maintz, Bettina Baeßler
PURPOSE: The present study aims at evaluating the feasibility and reproducibility of cardiac magnetic resonance (CMR) feature tracking (FT) derived strain and strain rate (SR) parameters of the left and right atrium (LA, RA) in patients with acute myocarditis as well as their potential to detect diastolic dysfunction. In addition, the diagnostic value of LA and RA strain parameters in the setting of acute myocarditis is investigated. METHODS: CMR cine data of 30 patients with CMR-positive acute myocarditis were retrospectively analyzed...
April 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28267552/safety-issues-and-updates-under-mr-environments
#13
REVIEW
Soo Jung Kim, Kyung Ah Kim
Magnetic resonance (MR) imaging is a useful imaging tool with superior soft tissue contrast for diagnostic evaluation. The MR environments poses unique risks to patients and employees differently from ionizing radiation exposure originated from computed tomography and plain x-ray films. The technology associated with MR system has evolved continuously since its introduction in the late 1970s. MR systems have advanced with static magnetic fields, faster and stronger gradient magnetic fields and more powerful radiofrequency transmission coils...
April 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28267551/quantitative-ct-analysis-of-pulmonary-pure-ground-glass-nodule-predicts-histological-invasiveness
#14
Qiong Li, Li Fan, En-Tao Cao, Qing-Chu Li, Ya-Feng Gu, Shi Yuan Liu
OBJECTIVE: To assess whether quantitative computed tomography (CT) can help predict histological invasiveness of pulmonary adenocarcinoma appearing as pure ground glass nodules (pGGNs). METHODS: A total of 110 pulmonary pGGNs were retrospectively evaluated, and pathologically classified as pre-invasive lesions, minimally invasive adenocarcinoma (MIA) and invasive pulmonary adenocarcinoma (IPA). Maximum nodule diameters, largest cross-sectional areas, volumes, mean CT values, weights, and CT attenuation values at the 0th,2th,5th, 25th, 50th,75th, 95th, 98th and100th percentiles on histogram, as well as 2th to 98th, 5th to 95th, 25th to 75th,and 0th to 100thslopes, respectively, were compared among the three groups...
April 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28267550/a-correlative-study-of-aortic-valve-rotation-angle-and-thoracic-aortic-sizes-using-ecg-gated-ct-angiography
#15
Farhood Saremi, Steven Cen, Nazila Tayari, Houman Alizadeh, Amir Emami, Leah Lin, Fernando Fleischman
OBJECTIVE: Various degrees of aortic valve rotation may be seen in individuals with no history of congenital cardiovascular malformations, but its association with aortic sizes has not been studied. METHODS: Gated computed tomographic (CT angiograms in 217 patients were studied (66.7±15; 22-97 years old)). Aortic diameters were determined at 5 anatomic locations. The length of the aorta from sinus to left subclavian artery was measured. The angle of valve rotation was recorded by measuring the angle between a line connecting the midpoint of the non-coronary sinus to the anterior commissure and another line along the interatrial septum...
April 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28267549/improved-cancer-detection-in-automated-breast-ultrasound-by-radiologists-using-computer-aided-detection
#16
J C M van Zelst, T Tan, B Platel, M de Jong, A Steenbakkers, M Mourits, A Grivegnee, C Borelli, N Karssemeijer, R M Mann
OBJECTIVE: To investigate the effect of dedicated Computer Aided Detection (CAD) software for automated breast ultrasound (ABUS) on the performance of radiologists screening for breast cancer. METHODS: 90 ABUS views of 90 patients were randomly selected from a multi-institutional archive of cases collected between 2010 and 2013. This dataset included normal cases (n=40) with >1year of follow up, benign (n=30) lesions that were either biopsied or remained stable, and malignant lesions (n=20)...
April 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28267548/the-optimal-monochromatic-spectral-computed-tomographic-imaging-plus-adaptive-statistical-iterative-reconstruction-algorithm-can-improve-the-superior-mesenteric-vessel-image-quality
#17
Xiao-Ping Yin, Zi-Wei Zuo, Ying-Jin Xu, Jia-Ning Wang, Huai-Jun Liu, Guang-Lu Liang, Bu-Lang Gao
OBJECTIVE: To investigate the effect of the optimal monochromatic spectral computed tomography (CT) plus adaptive statistical iterative reconstruction on the improvement of the image quality of the superior mesenteric artery and vein. MATERIALS AND METHODS: The gemstone spectral CT angiographic data of 25 patients were reconstructed in the following three groups: 70KeV, the optimal monochromatic imaging, and the optimal monochromatic plus 40%iterative reconstruction mode...
April 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28267547/fat-suppression-at-2d-mr-imaging-of-the-hands-dixon-method-versus-chess-technique-and-stir-sequence
#18
Thomas Kirchgesner, Vasiliki Perlepe, Nicolas Michoux, Ahmed Larbi, Bruno Vande Berg
OBJECTIVE: To compare the effectiveness of fat suppression and the signal-to-noise ratio (SNR) of the Dixon method with those of the CHESS (Chemical Shift-Selective) technique and STIR (Short Tau Inversion Recovery) sequence in hands of normal subjects at 2D MR imaging. MATERIAL AND METHODS: 14 healthy volunteers (mean age of 29.4 years) consented to have both hands prospectively imaged with SE T1 Dixon, T1 CHESS, T2 Dixon, T2 CHESS and STIR sequences in a 1.5T MR scanner...
April 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28267546/pulmonary-mri-at-3t-non-enhanced-pulmonary-magnetic-resonance-imaging-characterization-quotients-for-differentiation-of-infectious-and-malignant-lesions
#19
Sebastian Niko Nagel, Damon Kim, Tobias Penzkofer, Ingo G Steffen, Sebastian Wyschkon, Bernd Hamm, Stefan Schwartz, Thomas Elgeti
OBJECTIVE: To investigate 3T pulmonary magnetic resonance imaging (MRI) for characterization of solid pulmonary lesions in immunocompromised patients and to differentiate infectious from malignant lesions. MATERIALS AND METHODS: Thirty-eight pulmonary lesions in 29 patients were evaluated. Seventeen patients were immunocompromised (11 infections and 6 lymphomas) and 12 served as controls (4 bacterial pneumonias, 8 solid tumors). Ten of the 15 infections were acute...
April 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28267545/fourier-domain-image-fusion-for-differential-x-ray-phase-contrast-breast-imaging
#20
Eduardo Coello, Jonathan I Sperl, Dirk Bequé, Tobias Benz, Kai Scherer, Julia Herzen, Anikó Sztrókay-Gaul, Karin Hellerhoff, Franz Pfeiffer, Cristina Cozzini, Susanne Grandl
X-Ray Phase-Contrast (XPC) imaging is a novel technology with a great potential for applications in clinical practice, with breast imaging being of special interest. This work introduces an intuitive methodology to combine and visualize relevant diagnostic features, present in the X-ray attenuation, phase shift and scattering information retrieved in XPC imaging, using a Fourier domain fusion algorithm. The method allows to present complementary information from the three acquired signals in one single image, minimizing the noise component and maintaining visual similarity to a conventional X-ray image, but with noticeable enhancement in diagnostic features, details and resolution...
April 2017: European Journal of Radiology
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