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https://www.readbyqxmd.com/read/29792736/overutilization-of-health-care-resources-for-breast-pain
#1
Anne C Kushwaha, Kyungmin Shin, Megan Kalambo, Ravinder Legha, Karen E Gerlach, Megha Madhukar Kapoor, Wei T Yang
OBJECTIVE: The objective of this study is to analyze the incidence of women with breast pain who present to an imaging center and assess the imaging findings, outcomes, and workup costs at breast imaging centers affiliated with one institution. MATERIALS AND METHODS: Demographic characteristics of and imaging findings for female patients presenting with breast pain at three community breast imaging centers between January 1, 2014, and December 31, 2014, were reviewed...
May 24, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29792720/-experimental-processing-of-corrosion-casts-of-large-animal-organs
#2
R Pálek, V Liška, L Eberlová, H Mírka, M Svoboda, S Haviar, M Emingr, O Brzoň, P Mik, V Třeška
INTRODUCTION: Corrosion casts (CCs) are used for the visualization and assessment of hollow structures. CCs with filled capillaries enable (with the help of imaging methods) to obtain data for mathematical organ perfusion modelling. As the processing is more difficult in case of organs with greater volume of the vasculature, mainly organs from small animals have been cast up to now. The aim of this study was to optimize the protocol of corrosion casting of different organs of pig. Porcine organs are relatively easily accessible and frequently used in experimental medicine...
2018: Rozhledy V Chirurgii: Měsíčník Československé Chirurgické Společnosti
https://www.readbyqxmd.com/read/29792403/index-of-microcirculatory-resistance-guided-therapy-with-pressure-controlled-intermittent-coronary-sinus-occlusion-improves-coronary-microvascular-function-and-reduces-infarct-size-in-patients-with-st-elevation-myocardial-infarction-the-oxford-acute-myocardial
#3
Giovanni Luigi De Maria, Mohammad Alkhalil, Alessandra Borlotti, Mathias Wolfrum, Lisa Gaughran, Erica Dall'Armellina, Jeremy P Langrish, Andrew J Lucking, Robin P Choudhury, Rajesh K Kharbanda, Keith M Channon, Adrian P Banning
AIMS: The Oxford Acute Myocardial Infarction PICSO (OxAMI-PICSO) study aimed to assess the efficacy of index of microcirculatory resistance (IMR)-guided therapy with pressure-controlled intermittent coronary sinus occlusion (PICSO) in anterior ST-elevation myocardial infarction (STEMI). METHODS AND RESULTS: Patients with anterior STEMI treated with primary percutaneous coronary intervention (pPCI) were enrolled. Pre-stenting IMR was measured and PICSO treatment delivered if pre-stenting IMR was >40...
May 24, 2018: EuroIntervention
https://www.readbyqxmd.com/read/29792215/adding-left-atrial-appendage-closure-to-open-heart-surgery-provides-protection-from-ischemic-brain-injury-six-years-after-surgery-independently-of-atrial-fibrillation-history-the-laacs-randomized-study
#4
Jesper Park-Hansen, Susanne J V Holme, Akhmadjon Irmukhamedov, Christian L Carranza, Anders M Greve, Gina Al-Farra, Robert G C Riis, Brian Nilsson, Johan S R Clausen, Anne S Nørskov, Christina R Kruuse, Egill Rostrup, Helena Dominguez
BACKGROUND: Open heart surgery is associated with high occurrence of atrial fibrillation (AF), subsequently increasing the risk of post-operative ischemic stroke. Concomitant with open heart surgery, a cardiac ablation procedure is commonly performed in patients with known AF, often followed by left atrial appendage closure with surgery (LAACS). However, the protective effect of LAACS on the risk of cerebral ischemia following cardiac surgery remains controversial. We have studied whether LAACS in addition to open heart surgery protects against post-operative ischemic brain injury regardless of a previous AF diagnosis...
May 23, 2018: Journal of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/29792041/increased-diagnostic-confidence-in-the-diagnosis-of-pituitary-micro-lesions-with-the-addition-of-three-dimensional-sampling-perfection-with-application-optimized-contrasts-using-different-flip-angle-evolutions-sequences
#5
Ying Tang, Yue Wu, Hua Zhang, Jing Wang, ZhenWei Yao
Background Conventional magnetic resonance imaging (MRI) is adversely affected by thick slices, small intersection gaps, and the partial volume effect, leading to the missed diagnosis or misdiagnosis of pituitary micro-lesions. Purpose To evaluate the diagnostic yield of three-dimensional sampling perfection with application-optimized contrasts using different flip-angle evolutions (3D-T2 SPACE) sequences compared with a standard MRI protocol for the diagnosis of pituitary micro-lesions. Material and Methods The MRI findings of 664 patients with clinically suspected pituitary lesions were retrospectively analyzed...
January 1, 2018: Acta Radiologica
https://www.readbyqxmd.com/read/29791961/getting-started-with-magnetic-resonance-neurography
#6
Gustav Andreisek, Nicolae V Bolog
This article provides a review of magnetic resonance neurography (MRN) and how to get started. It explains step by step how to establish MRN at an institution: how to set up MRN protocols, how to train technicians, what a report needs to contain, and how relevant findings should be communicated to the referring physician. Advanced imaging techniques such as diffusion tensor imaging are only briefly discussed at the end of the article because most of those techniques are difficult for beginners and are still not considered standard in the clinical routine...
July 2018: Seminars in Musculoskeletal Radiology
https://www.readbyqxmd.com/read/29791199/localization-of-the-inferior-alveolar-canal-using-ultralow-dose-ct-with-iterative-reconstruction-techniques
#7
Asma'a Abdulrahman Al-Ekrish, Wafa Alfaleh, Romed Hörmann, Ameera Alabdulwahid, Wolfgang Puelacher, Gerlig Widmann
OBJECTIVES: To compare subjective and objective localization of the inferior alveolar canal (IAC) on multidetector computed tomography (MDCT) images obtained by ultralow doses in combination with the reconstruction techniques of filtered backprojection (FBP), Adaptive Statistical Iterative Reconstruction (ASIR), or Model Based Iterative Reconstruction (MBIR) as compared to standard dose MDCT and FBP. METHODS: Three cadavers were imaged with a reference standard dose MDCT examination (CTDIvol: 29...
May 23, 2018: Dento Maxillo Facial Radiology
https://www.readbyqxmd.com/read/29790820/towards-quantitative-18f-fdg-pet-mri-of-the-brain-automated-mr-driven-calculation-of-an-image-derived-input-function-for-the-non-invasive-determination-of-cerebral-glucose-metabolic-rates
#8
Lalith Ks Sundar, Otto Muzik, Lucas Rischka, Andreas Hahn, Ivo Rausch, Rupert Lanzenberger, Marius Hienert, Eva-Maria Klebermass, Frank-Günther Füchsel, Marcus Hacker, Magdalena Pilz, Ekaterina Pataraia, Tatjana Traub-Weidinger, Thomas Beyer
Absolute quantification of PET brain imaging requires the measurement of an arterial input function (AIF), typically obtained invasively via an arterial cannulation. We present an approach to automatically calculate an image-derived input function (IDIF) and cerebral metabolic rates of glucose (CMRGlc) from the [18F]FDG PET data using an integrated PET/MRI system. Ten healthy controls underwent test-retest dynamic [18F]FDG-PET/MRI examinations. The imaging protocol consisted of a 60-min PET list-mode acquisition together with a time-of-flight MR angiography scan for segmenting the carotid arteries and intermittent MR navigators to monitor subject movement...
January 1, 2018: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/29790633/diagnostic-accuracy-of-point-of-care-ultrasound-for-evaluation-of-early-blood-induced-joint-changes-comparison-with-mri
#9
W Foppen, I C van der Schaaf, F J A Beek, W P T M Mali, K Fischer
INTRODUCTION: Recurrent joint bleeding is the hallmark of haemophilia. Synovial hypertrophy observed with Magnetic Resonance Imaging (MRI) is associated with an increased risk of future joint bleeding. AIM: The aim of this study was to investigate whether point-of-care ultrasound (POC-US) is an accurate alternative for MRI for the detection of early joint changes. METHODS: In this single centre diagnostic accuracy study, bilateral knees and ankles of haemophilia patients with no or minimal arthropathy on X-rays were scanned using POC-US and 3 Tesla MRI...
May 23, 2018: Haemophilia: the Official Journal of the World Federation of Hemophilia
https://www.readbyqxmd.com/read/29789908/triple-rule-out-ct-angiography-using-two-axial-scans-with-16-cm-wide-detector-for-radiation-dose-reduction
#10
Yuhuan Chen, Qi Wang, Jianying Li, Yongjun Jia, Qi Yang, Taiping He
OBJECTIVE: To explore the use of two consecutive axial scans in triple-rule-out (TRO) examination on a 16 cm wide-detector CT for radiation dose reduction. MATERIALS AND METHODS: Sixty TRO patients were assigned to either study group (Group A, n = 30) or control group (Group B, n = 30). Group A used a two-phasic contrast injection: 25mgI/kg/s for 12 s in 1st and at 3.0 ml/s injection rate for 7 s in 2nd phase. The pulmonary artery, coronary artery and aorta were scanned in succession with two axial scans using smart-coverage technique...
May 22, 2018: European Radiology
https://www.readbyqxmd.com/read/29789905/pre-operative-mri-staging-of-endometrial-cancer-in-a-multicentre-cancer-network-can-we-match-single-centre-study-results
#11
N D Soneji, N Bharwani, A Ferri, V Stewart, A Rockall
OBJECTIVES: To evaluate the staging accuracy of magnetic resonance imaging (MRI) for endometrial cancer in daily practice over a 3-year period at a tertiary referral centre receiving scans from a large number of hospitals with varying protocols. To compare these daily practice results to published data from single-centre studies. METHODS: After ethical approval, MRI staging records for 270 studies from nine network and three centre hospitals were retrospectively collected and compared with final operative histopathology...
May 22, 2018: European Radiology
https://www.readbyqxmd.com/read/29789890/surveillance-magnetic-resonance-imaging-for-isolated-optic-pathway-gliomas-is-gadolinium-necessary
#12
Ezekiel Maloney, A Luana Stanescu, Francisco A Perez, Ramesh S Iyer, Randolph K Otto, Sarah Leary, Lotte Steuten, Amanda I Phipps, Dennis W W Shaw
BACKGROUND: Pediatric optic pathway gliomas are typically indolent but have a variable clinical course. Treatment is dictated by symptoms and changes on contrast-enhanced MRI examinations. Gadolinium retention in children has motivated parsimonious use of gadolinium-based contrast agents. OBJECTIVES: To determine surveillance MR factors that motivate changes in tumor-directed therapies and extrapolate cost-efficacy of a non-contrast follow-up protocol. MATERIALS AND METHODS: Using an imaging database search we identified children with isolated optic pathway gliomas and ≥3 follow-up contrast-enhanced MRIs...
May 22, 2018: Pediatric Radiology
https://www.readbyqxmd.com/read/29789875/ct-angiography-in-the-lower-extremity-peripheral-artery-disease-feasibility-of-an-ultra-low-volume-contrast-media-protocol
#13
Barbora Horehledova, Casper Mihl, Gianluca Milanese, Rutger Brans, Nienke G Eijsvoogel, Babs M F Hendriks, Joachim E Wildberger, Marco Das
PURPOSE: The ALARA principle is not only relevant for effective dose (ED) reduction, but also applicable for contrast media (CM) management. Therefore, the aim was to evaluate the feasibility of an ultra-low CM protocol in the assessment of peripheral artery disease (PAD). MATERIALS AND METHODS: Fifty PAD patients were scanned on third-generation dual-source computed tomography, from diaphragm to the forefoot, as follows: tube voltage: 70 kV, reference effective tube current: 90 mAs, collimation: 192 × 2 × 0...
May 22, 2018: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/29789530/efficient-blood-brain-barrier-opening-in-primates-with-neuronavigation-guided-ultrasound-and-real-time-acoustic-mapping
#14
Shih-Ying Wu, Christian Aurup, Carlos Sierra Sanchez, Julien Grondin, Wenlan Zheng, Hermes Kamimura, Vincent P Ferrera, Elisa E Konofagou
Brain diseases including neurological disorders and tumors remain under treated due to the challenge to access the brain, and blood-brain barrier (BBB) restricting drug delivery which, also profoundly limits the development of pharmacological treatment. Focused ultrasound (FUS) with microbubbles is the sole method to open the BBB noninvasively, locally, and transiently and facilitate drug delivery, while translation to the clinic is challenging due to long procedure, targeting limitations, or invasiveness of current systems...
May 22, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29789393/long-term-outcomes-in-patients-aged-%C3%A2-70-years-with-intravenous-glyburide-from-the-phase-ii-games-rp-study-of-large-hemispheric-infarction-an-exploratory-analysis
#15
Kevin N Sheth, Nils H Petersen, Ken Cheung, Jordan J Elm, Holly E Hinson, Bradley J Molyneaux, Lauren A Beslow, Gordon K Sze, J Marc Simard, W Taylor Kimberly
BACKGROUND AND PURPOSE: We aimed to determine whether subjects aged ≤70 years who were treated with intravenous glyburide (RP-1127; BIIB093; glibenclamide) would have better long-term outcomes than those who received placebo. METHODS: GAMES-RP (Glyburide Advantage in Malignant Edema and Stroke-Remedy Pharmaceuticals) was a prospective, double-blind, randomized, placebo-controlled phase 2 clinical trial. Eighty-six participants, aged 18 to 80 years, who presented to 18 centers with large hemispheric infarction (baseline diffusion-weighted imaging volumes, 82-300 cm3 ) randomized within 10 hours of symptom onset were enrolled...
May 22, 2018: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/29788799/management-of-the-left-subclavian-artery-during-tevar-complications-and-mid-term-follow-up
#16
Akram Youssef, Tamer Ghazy, Stephan Kersting, Jennifer Lynne Leip, Ralf-Thorsten Hoffmann, Utz Kappert, Klaus Matschke, Norbert Weiss, Adrian Mahlmann
BACKGROUND: Numerous conditions that affect the boundary between the aortic arch and descending aorta are treated with thoracic endovascular aortic repair (TEVAR). In 40 % of cases, coverage of the left subclavian artery (LSA) cannot be prevented. Subsequently, neurological complications such as stroke or ischemia of the left upper extremity may develop. However, the actual risk of these complications is subject to considerable controversy. The optimal treatment approach, specifically the question whether primary revascularization of the LSA should be performed in all cases, is unclear...
May 23, 2018: VASA. Zeitschrift Für Gefässkrankheiten
https://www.readbyqxmd.com/read/29788223/optimisation-of-a-paediatric-ct-brain-protocol-a-figure-of-merit-approach
#17
Eric Pace, Mark Borg
Paediatric head computed tomography (CT) dose optimisation was carried out using three figure-of-merits (FOMs), based on tube voltage, current, noise, volumetric computed tomography dose index (CTDIvol) and contrast-to-noise ratio (CNR). FOM1: spatial resolution and total minimum contrast level (N) against CTDIvol; FOM2: noise against CTDIvol; FOM3: CNR against CTDIvol. Stage 1: Application of FOM1 and FOM2 on a Catphan without current modulation. Stage 2: CTDIvol and noise assessed on an anthropomorphic phantom with current modulation...
May 18, 2018: Radiation Protection Dosimetry
https://www.readbyqxmd.com/read/29787501/an-apparent-diffusion-coefficient-histogram-method-versus-a-traditional-2-dimensional-measurement-method-for-identifying-non-puerperal-mastitis-from-breast-cancer-at-3-0-t
#18
Qi Tang, Qiang Li, Dong Xie, Ketao Chu, Lidong Liu, Chengcheng Liao, Yunying Qin, Zheng Wang, Danke Su
PURPOSE: This study aimed to investigate the utility of a volumetric apparent diffusion coefficient (ADC) histogram method for distinguishing non-puerperal mastitis (NPM) from breast cancer (BC) and to compare this method with a traditional 2-dimensional measurement method. MATERIALS AND METHODS: Pretreatment diffusion-weighted imaging data at 3.0 T were obtained for 80 patients (NPM, n = 27; BC, n = 53) and were retrospectively assessed. Two readers measured ADC values according to 2 distinct region-of-interest (ROI) protocols...
May 21, 2018: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/29786455/estimation-of-bone-mineral-density-and-breaking-strength-on-laying-hens-based-on-scans-of-computed-tomography-for-body-composition-analysis
#19
T Donkó, A Tischler, Á Csóka, G Kovács, M Emri, Ö Petneházy, A Szabó, V Halas, J Tossenberger, R Garamvölgyi, G Bajzik
1. The objective of this study was to evaluate the prediction potential of a computer tomography (CT) data collection protocol for determining total body composition used for analysis onwards the tibiotarsal bone quality features. 2. The CT image acquisition was performed on 54 healthy TETRA SL aying hens at 90 weeks of age as well as in the 69th week of the egg production period in vivo and their tibiotarsal bones, ex vivo. 3. Breaking strengths and ash content of the tibiotarsal bones were estimated based on the calculated mineral density of skeletal and tibiotarsal bones by means of CT with an estimation accuracy R2 0...
May 22, 2018: British Poultry Science
https://www.readbyqxmd.com/read/29786131/ca19-9-on-postoperative-surveillance-in-pancreatic-ductal-adenocarcinoma-predicting-recurrence-and-changing-prognosis-over-time
#20
Caroline J Rieser, Mazen Zenati, Ahmad Hamad, Amr I Al Abbas, Nathan Bahary, Amer H Zureikat, Herbert J Zeh, Melissa E Hogg
BACKGROUND: Serum carbohydrate antigen 19-9 (CA19-9) correlates with response to therapy and overall survival (OS) for patients with pancreatic ductal adenocarcinoma (PDAC). This study aimed to define the chronologic relationship between CA19-9 elevation and radiographic recurrence to develop a model that can predict the risk of recurrence (RFS) and prognosis during interval surveillance for patients with resected PDAC. METHODS: A retrospective review examined patients undergoing surgery for pancreatic adenocarcinoma from January 2010 to May 2016...
May 21, 2018: Annals of Surgical Oncology
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