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European Journal of Radiology

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https://www.readbyqxmd.com/read/27914725/introduction-to-the-ejr-special-issue-on-functional-lung-imaging
#1
EDITORIAL
Mark L Schiebler, Yoshiharu Ohno
No abstract text is available yet for this article.
November 18, 2016: European Journal of Radiology
https://www.readbyqxmd.com/read/27865580/the-role-of-dual-energy-computed-tomography-in-the-assessment-of-pulmonary-function
#2
REVIEW
Hye Jeon Hwang, Eric A Hoffman, Chang Hyun Lee, Jin Mo Goo, David L Levin, Hans-Ulrich Kauczor, Joon Beom Seo
The assessment of pulmonary function, including ventilation and perfusion status, is important in addition to the evaluation of structural changes of the lung parenchyma in various pulmonary diseases. The dual-energy computed tomography (DECT) technique can provide the pulmonary functional information and high resolution anatomic information simultaneously. The application of DECT for the evaluation of pulmonary function has been investigated in various pulmonary diseases, such as pulmonary embolism, asthma and chronic obstructive lung disease and so on...
November 8, 2016: European Journal of Radiology
https://www.readbyqxmd.com/read/27769539/reply-letter
#3
Rossano Girometti, Serena Pullini, Marco Andrea Signor, Chiara Zuiani
No abstract text is available yet for this article.
October 17, 2016: European Journal of Radiology
https://www.readbyqxmd.com/read/27773483/securing-safe-and-informative-thoracic-ct-examinations-progress-of-radiation-dose-reduction-techniques
#4
Takeshi Kubo, Yoshiharu Ohno, Joon Beom Seo, Tsuneo Yamashiro, Willi A Kalender, Chang Hyun Lee, David A Lynch, Hans-Ulrich Kauczor, Hiroto Hatabu
The increase in the radiation exposure from CT examinations prompted the investigation on the various dose-reduction techniques. Significant dose reduction has been achieved and the level of radiation exposure of thoracic CT is expected to reach the level equivalent to several chest X-ray examinations. With more scanners with advanced dose reduction capability deployed, knowledge on the radiation dose reduction methods has become essential to clinical practice as well as academic research. This article reviews the history of dose reduction techniques, ongoing changes brought by newer technologies and areas of further investigation...
October 13, 2016: European Journal of Radiology
https://www.readbyqxmd.com/read/27707586/physiology-for-the-pulmonary-functional-imager
#5
David L Levin, Mark L Schiebler, Susan R Hopkins
As pulmonary functional imaging moves beyond the realm of the radiologist and physicist, it is important that imagers have a common language and understanding of the relevant physiology of the lung. This review will focus on key physiological concepts and pitfalls relevant to functional lung imaging.
September 28, 2016: European Journal of Radiology
https://www.readbyqxmd.com/read/27707585/the-role-of-hyperpolarized-129-xenon-in-mr-imaging-of-pulmonary-function
#6
Lukas Ebner, Jeff Kammerman, Bastiaan Driehuys, Mark L Schiebler, Robert V Cadman, Sean B Fain
In the last two decades, functional imaging of the lungs using hyperpolarized noble gases has entered the clinical stage. Both helium ((3)He) and xenon ((129)Xe) gas have been thoroughly investigated for their ability to assess both the global and regional patterns of lung ventilation. With advances in polarizer technology and the current transition towards the widely available (129)Xe gas, this method is ready for translation to the clinic. Currently, hyperpolarized (HP) noble gas lung MRI is limited to selected academic institutions; yet, the promising results from initial clinical trials have drawn the attention of the pulmonary medicine community...
September 16, 2016: European Journal of Radiology
https://www.readbyqxmd.com/read/27665148/screening-for-lung-cancer-does-mri-have-a-role
#7
Juergen Biederer, Yoshiharu Ohno, Hiroto Hatabu, Mark L Schiebler, Edwin J R van Beek, Jens Vogel-Claussen, Hans-Ulrich Kauczor
While the inauguration of national low dose computed tomographic (LDCT) lung cancer screening programs has started in the USA, other countries remain undecided, awaiting the results of ongoing trials. The continuous technical development achieved by stronger gradients, parallel imaging and shorter echo time has made lung magnetic resonance imaging (MRI) an interesting alternative to CT. For the detection of solid lesions with lung MRI, experimental and clinical studies have shown a threshold size of 3-4mm for nodules, with detection rates of 60-90% for lesions of 5-8mm and close to 100% for lesions of 8mm or larger...
September 16, 2016: European Journal of Radiology
https://www.readbyqxmd.com/read/27663638/pet-imaging-approaches-for-inflammatory-lung-diseases-current-concepts-and-future-directions
#8
Delphine L Chen, Mark L Schiebler, Jin Mo Goo, Edwin J R van Beek
Inflammatory lung disease is one of the most common clinical scenarios, and yet, it is often poorly understood. Inflammatory lung disorders, such as chronic obstructive pulmonary diseases, which are causing significant mortality and morbidity, have limited therapeutic options. Recently, new treatments have become available for pulmonary fibrosis. This review article will describe the new insights that are starting to be gained from positron emission tomography (PET) methods, by targeting molecular processes using dedicated radiotracers...
September 16, 2016: European Journal of Radiology
https://www.readbyqxmd.com/read/27660186/letter-by-cou%C3%A3-ago-et-al-regarding-article-impact-of-multiparametric-magnetic-resonance-imaging-on-risk-group-assessment-of-patients-with-prostate-cancer-addressed-to-external-beam-radiation-therapy
#9
Felipe Couñago, Elia Del Cerro, Ana Aurora Díaz-Gavela, Francisco José Marcos, Manuel Recio, Israel Thuissard, David Sanz-Rosa, Karmele Olaciregui, María Mateo, Laura Cerezo
No abstract text is available yet for this article.
September 15, 2016: European Journal of Radiology
https://www.readbyqxmd.com/read/27842679/routine-use-of-standard-breast-mri-compared-to-axillary-ultrasound-for-differentiating-between-no-limited-and-advanced-axillary-nodal-disease-in-newly-diagnosed-breast-cancer-patients
#10
T J A van Nijnatten, E H Ploumen, R J Schipper, B Goorts, E H Andriessen, S Vanwetswinkel, M Schavemaker, P Nelemans, B de Vries, R G H Beets-Tan, M L Smidt, M B I Lobbes
OBJECTIVES: To compare standard breast MRI to dedicated axillary ultrasound (with or without tissue sampling) for differentiating between no, limited and advanced axillary nodal disease in breast cancer patients. METHODS: All patients who underwent breast MRI and dedicated axillary ultrasound between 2009 and 2014 were eligible. Exclusion criteria were recurrent disease, neoadjuvant systemic therapy and not receiving completion axillary lymph node dissection after positive sentinel lymph node biopsy (SLNB)...
December 2016: European Journal of Radiology
https://www.readbyqxmd.com/read/27842678/diagnostic-efficacy-and-safety-of-gadoteric-acid-mr-mammography-in-1537-patients
#11
Tim Seithe, Joachim Braun, Michael Wolf, Janis Vahldiek, Dajana Wolny, Jonas Auer, Joanna Pociej, Oliver Heine, Bernd Hamm, Maximilian de Bucourt
OBJECTIVES: To perform a large-scale multicenter post-marketing surveillance study for analyzing diagnostic effectiveness and safety of intravenous (IV) gadoteric acid (Dotarem(®)) in magnetic resonance (MR) mammography under daily practice conditions. MATERIALS AND METHODS: Patients underwent high-resolution MR mammography with gadoteric acid in 15 German centers. Radiologists used a standardized questionnaire to report data including patient demographics and medical history, characteristics of MR examination and results in terms of diagnosis and safety for the patient...
December 2016: European Journal of Radiology
https://www.readbyqxmd.com/read/27842677/spinal-diffusion-tensor-tractography-for-differentiation-of-intramedullary-tumor-suspected-lesions
#12
K Egger, M Hohenhaus, V Van Velthoven, S Heil, H Urbach
BACKGROUND AND PURPOSE: Primary MRI diagnosis of spinal intramedullary tumor-suspected lesions can be challenging and often requires spinal biopsy or resection with a substantial risk of neurological deficits. We evaluated whether Diffusion Tensor Imaging (DTI) tractography can facilitate the differential diagnosis. MATERIALS AND METHODS: Twenty-five consecutive patients with an intramedullary tumor-suspected lesion considered for spinal surgery were studied with a Diffusion-weighted multi-shot read out segmented EPI sequence (RESOLVE)...
December 2016: European Journal of Radiology
https://www.readbyqxmd.com/read/27842676/biparametric-3t-magentic-resonance-imaging-for-prostatic-cancer-detection-in-a-biopsy-na%C3%A3-ve-patient-population-a-further-improvement-of-pi-rads-v2
#13
Arnaldo Stanzione, Massimo Imbriaco, Sirio Cocozza, Ferdinando Fusco, Giovanni Rusconi, Carmela Nappi, Vincenzo Mirone, Francesco Mangiapia, Arturo Brunetti, Alfonso Ragozzino, Nicola Longo
OBJECTIVES: To prospectively determine the diagnostic accuracy of a biparametric 3T magnetic resonance imaging protocol (BP-MRI) for prostatic cancer detection, compared to a multiparametric MRI protocol (MP-MRI), in a biopsy naïve patient population. METHODS: Eighty-two untreated patients (mean age 65±7.6years) with clinical suspicion of prostate cancer and/or altered prostate-specific antigen (PSA) levels underwent a MP-MRI, including T2-weighted imaging, diffusion-weighted imaging (with the correspondent apparent diffusion coefficient maps) and dynamic contrast enhanced sequence, followed by prostate biopsy...
December 2016: European Journal of Radiology
https://www.readbyqxmd.com/read/27842675/the-role-of-diffusion-weighted-mri-dwi-in-the-differentiation-of-benign-from-malignant-skeletal-lesions-of-the-pelvis
#14
Hassan Douis, Mark A Davies, Parmjit Sian
PURPOSE: To evaluate the utility of Diffusion-weighted MRI in the differentiation of benign from malignant skeletal lesions of the pelvis. MATERIALS AND METHODS: In this retrospective study 33 patients with indeterminate skeletal lesions of the pelvis were evaluated with DWI. Minimum, mean, maximum ADC-values of the skeletal lesions were measured followed by qualitative assessment of DWI. All patients underwent histological confirmation using CT-guided biopsy or surgical resection...
December 2016: European Journal of Radiology
https://www.readbyqxmd.com/read/27842674/radiation-dose-in-cardiac-spect-ct-an-estimation-of-ssde-and-effective-dose
#15
Hamid Abdollahi, Isaac Shiri, Yazdan Salimi, Maghsoud Sarebani, Reza Mehdinia, Mohammad Reza Deevband, Seied Rabi Mahdavi, Ahmad Sohrabi, Ahmad Bitarafan-Rajabi
AIMS: The dose levels for Computed Tomography (CT) localization and attenuation correction of Single Photon Emission Computed Tomography (SPECT) are limited and reported as Volume Computed Tomography Dose Index (CTDIvol) and Dose-Length Product (DLP). This work presents CT dose estimation from Cardiac SPECT/CT based on new American Association of Physicists in Medicine (AAPM) Size Specific Dose Estimation (SSDE) parameter, effective dose, organ doses and also emission dose from nuclear issue...
December 2016: European Journal of Radiology
https://www.readbyqxmd.com/read/27842673/mr-imaging-as-a-problem-solving-tool-in-posterior-ankle-pain-a-review
#16
REVIEW
Gloria N L Wong, Tien Jin Tan
Posterior ankle pain is a cause of chronic pain and disability, afflicting a wide range of individuals. While proper identification of the cause is essential for timely and adequate treatment, identifying the cause and excluding mimickers is often challenging for the physician due to the complex nature of the joint. In addition, pathology that can cause posterior ankle pain may occur on their own or in co-existence. Clinical conditions that can present as posterior ankle pain include: posterior ankle impingement, Achilles tendon pathology, medial flexor tendon pathology, peroneal pathology, retrocalcaneal bursitis, posterior subtalar tarsal coalition, sinus tarsi, and tarsal tunnel syndrome...
December 2016: European Journal of Radiology
https://www.readbyqxmd.com/read/27842672/can-multiparametric-mri-replace-roach-equations-in-staging-prostate-cancer-before-external-beam-radiation-therapy
#17
Rossano Girometti, Marco Andrea Signor, Martina Pancot, Lorenzo Cereser, Chiara Zuiani
PURPOSE: To investigate the agreement between Roach equations (RE) and multiparametric magnetic resonance imaging (mpMRI) in assessing the T-stage of prostate cancer (PCa). MATERIALS AND METHODS: Seventy-three patients with biopsy-proven PCa and previous RE assessment prospectively underwent mpMRI on a 3.0T magnet before external beam radiation therapy (EBRT). Using Cohen's kappa statistic, we assessed the agreement between RE and mpMRI in defining the T-stage (≥T3 vs...
December 2016: European Journal of Radiology
https://www.readbyqxmd.com/read/27842671/real-time-mri-of-the-temporomandibular-joint-at-15-frames-per-second-a-feasibility-study
#18
Sebastian Krohn, Nikolaus Gersdorff, Torsten Wassmann, Klaus-Dietmar Merboldt, Arun A Joseph, Ralf Buergers, Jens Frahm
The purpose of this study was to develop and evaluate a novel method for real-time MRI of TMJ function at high temporal resolution and with two different contrasts. Real-time MRI was based on undersampled radial fast low angle shot (FLASH) acquisitions with iterative image reconstruction by regularized nonlinear inversion. Real-time MRI movies with T1 contrast were obtained with use of a radiofrequency-spoiled FLASH sequence, while movies with T2/T1 contrast employed a gradient-refocused FLASH version. TMJ function was characterized in 40 randomly selected volunteers by sequential 20s acquisitions of both the right and left joint during voluntary opening and closing of the mouth (in a medial, central and lateral oblique sagittal section perpendicular to the long axis of the condylar head)...
December 2016: European Journal of Radiology
https://www.readbyqxmd.com/read/27842670/computer-aided-detection-cad-of-solid-pulmonary-nodules-in-chest-x-ray-equivalent-ultralow-dose-chest-ct-first-in-vivo-results-at-dose-levels-of-0-13msv
#19
Michael Messerli, Thomas Kluckert, Meinhard Knitel, Fabian Rengier, René Warschkow, Hatem Alkadhi, Sebastian Leschka, Simon Wildermuth, Ralf W Bauer
OBJECTIVES: To determine the value of computer-aided detection (CAD) for solid pulmonary nodules in ultralow radiation dose single-energy computed tomography (CT) of the chest using third-generation dual-source CT at 100kV and fixed tube current at 70 mAs with tin filtration. METHODS: 202 consecutive patients undergoing clinically indicated standard dose chest CT (1.8±0.7 mSv) were prospectively included and scanned with an additional ultralow dose CT (0.13±0...
December 2016: European Journal of Radiology
https://www.readbyqxmd.com/read/27842669/acoustic-radiation-force-impulse-shear-wave-elastography-arfi-of-acute-and-chronic-pancreatitis-and-pancreatic-tumor
#20
Ruediger S Goertz, Johanna Schuderer, Deike Strobel, Lukas Pfeifer, Markus F Neurath, Dane Wildner
INTRODUCTION: Acoustic Radiation Force Impulse (ARFI) elastography evaluates tissue stiffness non-invasively and has rarely been applied to pancreas examinations so far. In a prospective and retrospective analysis, ARFI shear wave velocities of healthy parenchyma, pancreatic lipomatosis, acute and chronic pancreatitis, adenocarcinoma and neuroendocrine tumor (NET) of the pancreas were evaluated and compared. MATERIAL AND METHODS: In 95 patients ARFI elastography of the pancreatic head, and also of the tail for a specific group, was analysed retrospectively...
December 2016: European Journal of Radiology
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