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https://www.readbyqxmd.com/read/28720373/incidence-of-adverse-contrast-reaction-following-nonintravenous-urinary-tract-imaging
#1
Robert H Blackwell, Eric J Kirshenbaum, Matthew A C Zapf, Anai N Kothari, Paul C Kuo, Robert C Flanigan, Gopal N Gupta
Adverse reactions (ARs) to intravenous (IV) radiographic contrast range from mild urticaria to life-threatening anaphylaxis. Intraluminal contrast dye is routinely used in the urinary tract with a minimal perceived risk of AR. We used the Healthcare Cost and Utilization Project State Inpatient Databases for California and Florida from 2007 to 2011 to identify patients who received urinary tract contrast dye for retrograde pyelography, percutaneous pyelography, retrograde/other cystogram, and ileal conduitogram...
February 2017: European Urology Focus
https://www.readbyqxmd.com/read/28708716/the-influence-of-contrast-agent-s-osmolarity-on-iodine-delivery-protocol-in-coronary-computed-tomography-angiography-comparison-between-iso-osmolar-iodixanol-320-and-low-osmolar-iomeprol-370
#2
Xiaohan Yang, Weiwei Huang, Wangyan Liu, Yinsu Zhu, Yi Xu, Guanyu Yang, Lijun Tang, Xiaomei Zhu
OBJECTIVES: This study aims to assess whether iodine-contained contrast agents with different osmolarity affect iodine delivery protocol during coronary computed tomography angiography (CCTA). METHODS: Patients who underwent CCTA were randomized to receive contrast media either iodixanol-320 (iso-osmolar group) or iopromide-370 (low-osmolar group). Contrast protocols were recorded. Tube voltage of 100 kV was chosen for patients with body mass index of less than or equal to 25 (n = 224) and tube voltage of 120 kV for patients with body mass index of greater than 25 (n = 165)...
July 13, 2017: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/28707094/primary-and-secondary-percutaneous-ureteral-stent-placement-comparison-of-stent-patency-and-clinical-outcome
#3
Seo Yeon Youn, Jung Suk Oh, Hae Giu Lee, Byung Gil Choi, Ho Jong Chun, Eu Hyun Kim
OBJECTIVES: To compare early double J ureteral stent (DJUS) dysfunction rate and long-term patency between two percutaneous ureteral stent placement methods: single-stage (primary) or two-stage (secondary) procedures. METHODS: A total of 250 (176 primary and 74 secondary) DJUS placements performed on interventional unit were retrospectively reviewed between February 2008 and March 2014. Early DJUS dysfunction was defined as no passage of contrast media into the urinary bladder in 2-3 days after placement...
July 13, 2017: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/28706806/osseoscopy-direct-visualization-to-assist-core-decompression-and-debridement-of-necrotic-bone-defects
#4
William C Geisert, Aaron M Perdue, Kagan Ozer
Free vascularized fibular grafting after core decompression and debridement of necrotic lesions is an effective surgical treatment of avascular necrosis of the femoral head. A technical challenge encountered in performing this procedure is ensuring adequate debridement of necrotic parts while preserving healthy bone. A previously described method accomplishes this indirectly using radioactive contrast media and fluoroscopy, increasing the risk of radiation exposure. We propose a surgical technique using standard arthroscopic equipment to visualize inside the femoral head, facilitating precise and accurate debridement without additional radiation exposure...
June 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28702886/comparison-of-transvaginal-sonography-and-computed-tomography-colonography-with-contrast-media-and-urographic-phase-for-diagnosing-deep-infiltrating-endometriosis-of-the-posterior-compartment-of-the-pelvis-a-pilot-study
#5
Letizia Zannoni, Simona Del Forno, Francesca Coppola, Dimitris Papadopoulos, Domenico Valerio, Rita Golfieri, Giacomo Caprara, Roberto Paradisi, Renato Seracchioli
PURPOSE: To compare the diagnostic accuracy of transvaginal sonography (TVS) and computed tomography-colonography with contrast media and urographic phase (CTCU) in the preoperative detection of deep infiltrating endometriosis (DIE). MATERIALS AND METHODS: Forty-seven patients with clinical suspicion of DIE underwent preoperative TVS and CTCU. Imaging data were compared with histopathologic analysis. Sensitivity, specificity, positive and negative predictive values and test accuracies of the two modalities were calculated...
July 12, 2017: Japanese Journal of Radiology
https://www.readbyqxmd.com/read/28700167/-relevance-of-contrast-ultrasound-with-microbubbles-in-vascular-medecine
#6
Andreas Erdmann, Barbara Ney, Adriano Alatri, Luca Calanca, Lucia Mazzolai
Application of ultrasound contrast media has become a standard in diagnostic imaging in cardiology and in the characterization of focal lesions in multiple organs, especially of the liver. In the past years there was a growing body of evidence for their usefulness in vascular medicine. The development of contrast media, microbubbles with a stabilizing envelope and filled with gaz, small enough to pass through pulmonary capillaries made real-time imaging of organ perfusion possible. Ultrasound contrast media are rapidly eliminated by exhalation and can safely be administered to patients with renal failure...
December 7, 2016: Revue Médicale Suisse
https://www.readbyqxmd.com/read/28700030/risk-for-adverse-reaction-to-iodinated-contrast-media-a-validation-study
#7
Beatriz Cavalcanti Juchem, Miriam de Abreu Almeida
Objectives: To validate the content of the nursing diagnosis, Risk for adverse reaction to iodinated contrast media, and its nursing interventions and outcomes according to standardized terminologies. Method: Fehring's (1987) model of diagnosis content validation was used, with the participation of experts including registered nurses and physicians. Results: Seventy-four experts validated the title and the definition of the diagnosis, and assessed 28 risk factors, five of which were validated as primary, 22 as secondary, and one was discarded...
July 6, 2017: Revista Gaúcha de Enfermagem
https://www.readbyqxmd.com/read/28697194/enhancing-contrast-agents-and-radiotracers-performance-through-hyaluronic-acid-coating-in-neuroradiology-and-nuclear-medicine
#8
Mario Ganau, Nikolaos Ch Syrmos, Felice D'Arco, Laura Ganau, Salvatore Chibbaro, Lara Prisco, Gianfranco K I Ligarotti, Rossano Ambu, Andrea Soddu
The use of hyaluronic acid nanoshells has been proposed to encapsulate prodrugs and exploit the mechanisms of interactions between living cells, like endocytes or cancer cells and hyaluronic acid, which is a natural component of the extracellular matrix. In this review we describe the potential and the limits of this promising research trend and discuss the theoretical advantages of such an engineering approach. Is it a possible scalability to increase the efficacy and biodegradability of molecules like contrast media and radiotracers especially for neuroradiology and nuclear medicine studies...
July 12, 2017: Hellenic Journal of Nuclear Medicine
https://www.readbyqxmd.com/read/28693900/biodegradation-of-pharmaceuticals-and-endocrine-disruptors-with-oxygen-nitrate-manganese-iv-iron-iii-and-sulfate-as-electron-acceptors
#9
Natalie Schmidt, Declan Page, Andreas Tiehm
Biodegradation of pharmaceuticals and endocrine disrupting compounds was examined in long term batch experiments for a period of two and a half years to obtain more insight into the effects of redox conditions. A mix including lipid lowering agents (e.g. clofibric acid, gemfibrozil), analgesics (e.g. diclofenac, naproxen), beta blockers (e.g. atenolol, propranolol), X-ray contrast media (e.g. diatrizoic acid, iomeprol) as well as the antiepileptic carbamazepine and endocrine disruptors (e.g. bisphenol A, 17α-ethinylestradiol) was analyzed in batch tests in the presence of oxygen, nitrate, manganese (IV), iron (III), and sulfate...
June 27, 2017: Journal of Contaminant Hydrology
https://www.readbyqxmd.com/read/28686941/diffusion-and-sorption-of-organic-micropollutants-in-biofilms-with-varying-thicknesses
#10
Elena Torresi, Fabio Polesel, Kai Bester, Magnus Christensson, Barth F Smets, Stefan Trapp, Henrik R Andersen, Benedek Gy Plósz
Solid-liquid partitioning is one of the main fate processes determining the removal of micropollutants in wastewater. Little is known on the sorption of micropollutants in biofilms, where molecular diffusion may significantly influence partitioning kinetics. In this study, the diffusion and the sorption of 23 micropollutants were investigated in novel moving bed biofilm reactor (MBBR) carriers with controlled biofilm thickness (50, 200 and 500 μm) using targeted batch experiments (initial concentration = 1 μg L(-1), for X-ray contrast media 15 μg L(-1)) and mathematical modelling...
June 14, 2017: Water Research
https://www.readbyqxmd.com/read/28684756/multicolor-spectral-photon-counting-computed-tomography-in-vivo-dual-contrast-imaging-with-a-high-count-rate-scanner
#11
David P Cormode, Salim Si-Mohamed, Daniel Bar-Ness, Monica Sigovan, Pratap C Naha, Joelle Balegamire, Franck Lavenne, Philippe Coulon, Ewald Roessl, Matthias Bartels, Michal Rokni, Ira Blevis, Loic Boussel, Philippe Douek
A new prototype spectral photon-counting computed tomography (SPCCT) based on a modified clinical CT system has been developed. SPCCT analysis of the energy composition of the transmitted x-ray spectrum potentially allows simultaneous dual contrast agent imaging, however, this has not yet been demonstrated with such a system. We investigated the feasibility of using this system to distinguish gold nanoparticles (AuNP) and an iodinated contrast agent. The contrast agents and calcium phosphate were imaged in phantoms...
July 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28683542/feasibility-and-applicability-of-static-vascular-outline-roadmapping-during-tavi
#12
Navid Madershahian, Carolyn Weber, Payman Majd, Tanja Rudolph, Elmar Kuhn, Maximilian Scherner, Yeong-Hoon Choi, Kaveh Eghbalzadeh, Volker Rudolph, Cherif Sahyoun, Thorsten Wahlers
BACKGROUND: We investigated the application and feasibility of a novel software tool designed for the visualization of the aortic root during transcatheter aortic valve implantation (TAVI). The final positioning of the device prior deployment remains the most critical phase during TAVI. METHODS: Philips "Vascular Outlining" prototype application was used during balloon expandable Edwards Lifesciences SapienXT valve deployment. It processes any angiographic sequences, extracting the static outline of vessels and projecting the two- dimensional vessel margins as a roadmap on live fluoroscopy...
July 5, 2017: Journal of Cardiovascular Surgery
https://www.readbyqxmd.com/read/28679192/a-case-of-highly-aggressive-anaplastic-seminoma-of-the-testis-presenting-as-fungating-scrotal-lesion
#13
Massimiliano Creta, Vincenzo Mirone, Sergio Di Meo, Roberto Buonopane, Nicola Longo, Ferdinando Fusco, Nicola Rosario Forte, Vittorio Imperatore
Anaplastic seminoma (AS) is an uncommon histological variant of classical seminoma of the testis and account for 5%-15% of cases. It is poorly described in the scientific literature. We present the case of a 50-years-old homeless man presenting with fever, marked left scrotal hardness and a fungating left scrotal lesion. He underwent left orchiopexy 40 years before. A computed tomography with contrast media showed a suspect testis cancer with scrotal involvment, extensive intralesional necrosis and multiple systemic metastases...
June 30, 2017: Archivio Italiano di Urologia, Andrologia
https://www.readbyqxmd.com/read/28669111/iopamidol-as-an-oral-contrast-media%C3%A2-for-computed-tomography-a-taste-comparison-to-iohexol-diatrizoate-sodium-and-barium-sulfate
#14
Douglas Rogers, Chandni Sheth, Laura Eisenmenger, Eugene Mignogna, Thomas Winter
OBJECTIVES: The objective of this study is to compare the palatability of iopamidol and iohexol. METHODS: This was a blinded and randomized trial in which fifty healthy subjects taste tested iopamidol (Isovue, Bracco Diagnostics), iohexol (Omnipaque, GE Healthcare), diatrizoate meglumine and diatrizoate sodium solution (Gastrografin, Bracco Diagnostics), and barium sulfate suspension 2.1% w/v, 2.0% w/w (READI-CAT2, E-Z-EM). Participants scored palatability on a continuous scale from 0 to 40 (0 = intolerable, 10 = unpleasant but tolerable, 20 = neutral, 30 = kind of like, 40 = strongly like)...
July 1, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28668428/liver-mri-from-basic-protocol-to-advanced-techniques
#15
Henrique Donato, Manuela França, Isabel Candelária, Filipe Caseiro-Alves
Liver MR is a well-established modality with multiparametric capabilities. However, to take advantage of its full capacity, it is mandatory to master the technique and optimize imaging protocols, apply advanced imaging concepts and understand the use of different contrast media. Physiologic artefacts although inherent to upper abdominal studies can be minimized using triggering techniques and new strategies for motion control. For standardization, the liver MR protocol should include motion-resistant T2-w sequences, in-op phase GRE T1 and T2-w fast spin echo sequences with fat suppression...
August 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28667276/diagnostic-performance-of-contrast-enhanced-pulmonary-computed-tomography-angiography-for-the-detection-of-angioinvasive-pulmonary-aspergillosis-in-immunocompromised-patients
#16
C Henzler, T Henzler, D Buchheidt, John W Nance, C A Weis, R Vogelmann, U Benck, T Viergutz, T Becher, T Boch, S A Klein, D Heidenreich, L Pilz, M Meyer, P M Deckert, W-K Hofmann, S O Schoenberg, M Reinwald
Invasive pulmonary aspergillosis (IPA) is one of the major complications in immunocompromised patients. The mainstay of diagnostic imaging is non-enhanced chest-computed-tomography (CT), for which various non-specific signs for IPA have been described. However, contrast-enhanced CT pulmonary angiography (CTPA) has shown promising results, as the vessel occlusion sign (VOS) seems to be more sensitive and specific for IPA in hematologic patients. The aim of this study was to evaluate the diagnostic accuracy of CTPA in a larger cohort including non-hematologic immunocompromised patients...
June 30, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28659139/the-unique-value-of-cardiovascular-magnetic-resonance-in-patients-with-suspected-acute-coronary-syndrome-and-culprit-free-coronary-angiograms
#17
Roman Panovský, Júlia Borová, Martin Pleva, Věra Feitová, Petr Novotný, Vladimír Kincl, Tomáš Holeček, Jaroslav Meluzín, Ondřej Sochor, Radka Štěpánová
BACKGROUND: Patients with chest pain, elevated troponin, and unobstructed coronary disease present a clinical dilemma. The purpose of this study was to investigate the incremental diagnostic value of cardiovascular magnetic resonance (CMR) in a cohort of patients with suspected acute coronary syndrome (ACS) and unobstructed coronary arteries. RESULTS: Data files of patients meeting the inclusion criteria in two cardiology centres were searched and analysed. The inclusion criteria included: 1) thoracic pain suspected with ACS; 2) a significant increase in the high-sensitive Troponin T value; 3) ECG changes; 4) coronary arteries without any significant stenosis; 5) a CMR examination included in the diagnostic process; 6) an uncertain diagnosis before the CMR exam; and 7) the absence of known CMR and contrast media contraindications...
June 28, 2017: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/28656510/alprostadil-protects-type-2-diabetes-mellitus-patients-treated-with-metformin-from-contrast-induced-nephropathy
#18
Jing Wang, Xiaobo Ai, Li Li, Yanyan Gao, Nina Sun, Changgui Li, Weihong Sun
PURPOSE: Type 2 diabetes mellitus (T2DM) patients treated with metformin are predisposed to develop contrast-induced nephropathy (CIN) after received emergency contrast-enhanced computed tomography (CT) examination. We evaluated the protective effects of alprostadil on CIN in T2DM patients treated with metformin after contrast media (CM) administration. METHODS: In this single-institution, single-blind, superiority trial, we randomly assigned 451 T2DM patients taking metformin and underwent emergency contrast-enhanced CT examination to either the alprostadil group (227 patients) receiving alprostadil or the control group (224 patients) without alprostadil...
June 27, 2017: International Urology and Nephrology
https://www.readbyqxmd.com/read/28655388/ultrasound-guided-percutaneous-endovascular-treatment-of-arteriovenous-fistula-graft
#19
Boštjan Leskovar, Tjaša Furlan, Simona Poznič, Maja Potisek, Anton Adamlje, Tomaž Ključevšek
BACKGROUND: Ultrasound-guided percutaneous endovascular treatment of arteriovenous fistula (AVF) or graft failure is an alternative to radiologically-guided angioplastic methods. Its main advantages are that it can be used with open or percutaneous access, using no contrast media and no radiation. The aim of this study was to analyze the results of ultrasound-guided endovascular treatment of arteriovenous access failure. MATERIAL AND METHODS: Preoperative ultrasound was used to determine the degree of stenosis and the size of balloon used in angioplasty...
June 28, 2017: Clinical Nephrology
https://www.readbyqxmd.com/read/28648419/diagnostic-accuracy-of-serum-cystatin-c-for-early-recognition-of-contrast-induced-nephropathy-in-western-indians-undergoing-cardiac-catheterization
#20
Anand N Shukla, Manish Juneja, Himanshu Patel, Komal H Shah, Ashwati Konat, Bhavesh M Thakkar, Tarun Madan, Jayesh Prajapati
AIMS: We aimed to compare the diagnostic efficacy of serum cystatin C (sCyC) for contrast induced nephropathy (CIN) in Western Indians undergoing cardiac catheterization. We also aimed to propose a clinically applicable cut-off of sCyC for early identification of CIN in this ethnic group. METHODS: In this prospective study, 253 patients undergoing coronary angiography and/or percutaneous coronary intervention were enrolled. The demographic and risk factor details, levels of sCr at baseline, 24 and 48h after the procedure, whereas baseline and 24h levels of sCyC were noted...
May 2017: Indian Heart Journal
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