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https://www.readbyqxmd.com/read/29340768/the-comparison-of-clinical-outcomes-in-patients-with-acute-myocardial-infarction-and-advanced-chronic-kidney-disease-on-chronic-hemodialysis-versus-off-hemodialysis
#1
Naoyuki Akashi, Kenichi Sakakura, Yusuke Watanabe, Masamitsu Noguchi, Yousuke Taniguchi, Kei Yamamoto, Hiroshi Wada, Shin-Ichi Momomura, Hideo Fujita
Acute myocardial infarction (AMI) is more frequently observed in patients with chronic kidney disease (CKD) than in patients without CKD. Initial treatment strategy for AMI includes primary percutaneous coronary intervention (PCI), which requires substantial amount of contrast media. We hypothesized that the clinical outcomes are comparable or worse in patients with AMI and advanced CKD off chronic hemodialysis as compared to patients with AMI and advanced CKD on chronic hemodialysis. The purpose of this study was to compare the clinical outcomes of patients with AMI and advanced CKD on hemodialysis versus off hemodialysis...
January 16, 2018: Heart and Vessels
https://www.readbyqxmd.com/read/29340315/contrast-induced-nephropathy-and-oxygen-pretreatment-in-patients-with-impaired-renal-function
#2
Haruki Sekiguchi, Yoichi Ajiro, Yoshie Uchida, Kentaro Jujo, Kazunori Iwade, Naohide Tanaka, Ken Shimamoto, Yukio Tsurumi, Masatoshi Kawana, Nobuhisa Hagiwara
Introduction: Contrast-induced nephropathy is a complication following coronary angiography and percutaneous coronary intervention. Because contrast-induced nephropathy is a predictor of long-term mortality in patients with ischemic heart disease undergoing percutaneous coronary intervention, preventive strategies are required. We assessed the effects of periprocedural oxygenation on contrast-induced nephropathy among patients with pre-existing renal dysfunction. Methods: A total of 200 consecutive patients with impaired renal function (estimated glomerular filtration < 60 ml/min per 1...
January 2018: KI Reports
https://www.readbyqxmd.com/read/29339048/intrarenal-fat-deposition-does-not-interfere-with-the-measurement-of-single-kidney-perfusion-in-obese-swine-using-multi-detector-computed-tomography
#3
Christopher M Ferguson, Alfonso Eirin, Gregory J Michalak, Ahmad F Hedayat, Abdelrhman Abumoawad, Ahmed Saad, Xiangyang Zhu, Stephen C Textor, Cynthia H McCollough, Lilach O Lerman
BACKGROUND: Altered vascular structure or function in several diseases may impair renal perfusion. Multi-detector computed tomography (MDCT) is a non-invasive tool to assess single-kidney perfusion and function based on dynamic changes in tissue attenuation during contrast media transit. However, changes in basal tissue attenuation might hamper these assessments, despite background subtraction. Evaluation of iodine concentration using the dual-energy (DECT) MDCT mode allows excluding effects of basal values on dynamic changes in tissue attenuation...
January 10, 2018: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/29337841/frequency-and-severity-of-acute-allergic-like-reactions-to-intravenously-administered-gadolinium-based-contrast-media-in-children
#4
Monica M Forbes-Amrhein, Jonathan R Dillman, Andrew T Trout, Bernadette L Koch, Julie M Dickerson, Richard M Giordano, Alexander J Towbin
OBJECTIVES: The purpose of this study is to determine the frequency and severity of acute allergic-like reactions to gadolinium-based contrast media (GBCM) in children before, during, and after the transition from gadopentetate dimeglumine to gadoterate meglumine as our primary clinical GBCM. MATERIALS AND METHODS: Institutional review board approval was obtained for this Health Insurance Portability and Accountability Act-compliant retrospective investigation. Allergic-like reactions to GBCM in pediatric patients were retrospectively assessed from January 2009 to January 2017, which included a departmental change of GBCM from gadopentetate dimeglumine to gadoterate meglumine...
January 15, 2018: Investigative Radiology
https://www.readbyqxmd.com/read/29324837/health-economic-assessment-of-gd-eob-dtpa-mri-versus-eccm-mri-and-multi-detector-ct-for-diagnosis-of-hepatocellular-carcinoma-in-china
#5
Xiaoning He, Jing Wu, Anke-Peggy Holtorf, Harald Rinde, Shuangshuang Xie, Wen Shen, Jiancun Hou, Xuehua Li, Ziping Li, Jiaming Lai, Yuting Wang, Lin Zhang, Jian Wang, Xuesong Li, Kuansheng Ma, Feng Ye, Han Ouyang, Hong Zhao
Limited data exists in China on the comparative cost of gadolinium ethoxybenzyl diethylenetriamine magnetic resonance imaging (Gd-EOB-DTPA-MRI) with other imaging techniques. This study compared the total cost of Gd-EOB-DTPA-MRI with multidetector computed tomography (MDCT) and extracellular contrast media-enhanced MRI (ECCM-MRI) as initial imaging procedures in patients with suspected hepatocellular carcinoma (HCC). We developed a decision-tree model on the basis of the Chinese clinical guidelines for HCC, which was validated by clinical experts from China...
2018: PloS One
https://www.readbyqxmd.com/read/29324560/contrast-media-extravasations-in-patients-undergoing-computerized-tomography-scanning-a-systematic-review-and-meta-analysis-of-risk-factors-and-interventions
#6
Sandrine Ding, Nicole Richli Meystre, Cosmin Campeanu, Giuseppe Gullo
OBJECTIVE: To identify risk factors and interventions preventing or reducing contrast medium extravasation. INTRODUCTION: Computed tomography (CT) is a radiological examination essential for the diagnosis and monitoring of many diseases. It is often performed with the intravenous (IV) injection of contrast agents. Use of these products can result in a significant complication, extravasation, which is the accidental leakage of IV material into the surrounding tissue...
January 2018: JBI Database of Systematic Reviews and Implementation Reports
https://www.readbyqxmd.com/read/29314060/dynamic-field-of-view-imaging-to-increase-temporal-resolution-in-the-early-phase-of-contrast-media-uptake-in-breast-dce-mri-a-feasibility-study
#7
Federico D Pineda, Ty O Easley, Gregory S Karczmar
PURPOSE: To increase diagnostic accuracy of breast MRI by increasing temporal resolution and more accurately sampling the early kinetics of contrast media uptake. We tested the feasibility of accelerating bilateral breast DCE-MRI by reducing the FOV, allowing aliasing, and unfolding the resulting images. METHODS: Previous experience with an 'ultrafast' protocol for bilateral breast DCE-MRI (6s-10s temporal resolution) showed that the number of significantly enhancing voxels is very low in the first 30 to 45 seconds after contrast media injection...
January 3, 2018: Medical Physics
https://www.readbyqxmd.com/read/29306370/weight-adapted-iodinated-contrast-media-administration-in-abdomino-pelvic-ct-can-image-quality-be-maintained
#8
E Perrin, M Jackson, R Grant, C Lloyd, F Chinaka, V Goh
INTRODUCTION: In many centres, a fixed method of contrast-media administration is used for CT regardless of patient body habitus. The aim of this trial was to assess contrast enhancement of the aorta, portal vein, liver and spleen during abdomino-pelvic CT imaging using a weight-adapted contrast media protocol compared to the current fixed dose method. METHODS: Thirty-nine oncology patients, who had previously undergone CT abdomino-pelvic imaging at the institution using a fixed contrast media dose, were prospectively imaged using a weight-adapted contrast media dose (1...
February 2018: Radiography
https://www.readbyqxmd.com/read/29301186/clinical-course-of-infants-with-congenital-heart-disease-who-developed-thyroid-dysfunction-within-100-days
#9
Hye Jin Lee, Hyeoh Won Yu, Gi Beom Kim, Choong Ho Shin, Sei Won Yang, Young Ah Lee
PURPOSE: We investigated the clinical course of infants with congenital heart disease (CHD) who experienced thyroid dysfunction within 100 days of birth. METHODS: We performed retrospective medical reviews of 54 CHD patients (24 male patients) who underwent a thyroid function test (TFT) between January 2007 and July 2016. Data were collected on birth history, diagnosis of CHD, underlying chromosomal or genetic abnormalities, medication history, surgery, ventilator care, and exposure to iodine contrast media (ICM)...
December 2017: Annals of Pediatric Endocrinology & Metabolism
https://www.readbyqxmd.com/read/29300175/comparison-of-arterial-input-functions-measured-from-ultra-fast-dynamic-contrast-enhanced-mri-and-dynamic-contrast-enhanced-computed-tomography-in-prostate-cancer-patients
#10
Shiyang Wang, Zheng Feng Feng Lu, Xiaobing Fan, Milica Medved, Xia Jiang, Steffen Sammet, Ambereen Yousuf, Federico Pineda, Aytekin Oto, Gregory S Karczmar
The purpose of this study was to evaluate the accuracy of arterial input functions (AIFs) measured from dynamic contrast enhanced (DCE) MRI following a low dose of contrast media injection. The AIFs measured from DCE computed tomography (CT) were used as 'gold standard'. Total twenty patients received CT and MRI scans on the same day. Patients received 120mL Iohexol in DCE-CT and a low dose of (0.015mM/kg) of gadobenate dimeglumine in DCE-MRI. The AIFs were measured in the iliac artery and normalized to the CT and MRI contrast agent doses...
January 4, 2018: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/29298922/updates-to-the-acr-manual-on-contrast-media
#11
Rosewinter Kodzwa
No abstract text is available yet for this article.
November 2017: Radiologic Technology
https://www.readbyqxmd.com/read/29279155/image-quality-and-radiation-dose-of-low-tube-voltage-ct-with-reduced-contrast-media-for-right-adrenal-vein-imaging
#12
Yuki Takahashi, Hideki Ota, Kensuke Omura, Yutaka Dendo, Katharina Otani, Tomonori Matsuura, Masahiro Kitami, Kazumasa Seiji, Yuta Tezuka, Masahiro Nezu, Yoshikiyo Ono, Ryo Morimoto, Fumitoshi Satoh, Kei Takase
OBJECTIVES: To compare image quality and radiation dose of right adrenal vein (RAV) imaging computed tomography (CT) among conventional, low kV, and low kV with reduced contrast medium protocols. METHODS: One-hundred-and-twenty patients undergoing adrenal CT were randomly assigned to one of three protocols: contrast dose of 600mgI/kg at 120-kV tube voltage setting (600-120 group), 600mgI/kg at 80kV (600-80 group), and 360mgI/kg at 80kV (360-80 group). Iterative reconstruction was used for 80-kV groups...
January 2018: European Journal of Radiology
https://www.readbyqxmd.com/read/29274126/computed-tomographic-contrast-tenography-of-the-digital-flexor-tendon-sheath-of-the-equine-hindlimb
#13
Rachel Agass, Jonathon Dixon, Barny Fraser
Pre-surgical investigation of digital flexor tendon sheath pathology remains challenging with current standard imaging techniques. The aim of this prospective, anatomical, pilot study was to describe the anatomy of the equine hind limb digital flexor tendon sheath using a combination of computed tomography (CT) and computed tomographic contrast tenography in clinically normal cadaver limbs. Ten pairs of hind limbs with no external abnormalities were examined from the level of the tarsometatarsal joint distally...
December 22, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/29261551/maximum-allowable-contrast-dose-and-prevention-of-acute-kidney-injury-following-cardiovascular-procedures
#14
Joe Aoun, Diala Nicolas, Jeremiah R Brown, Bertrand L Jaber
PURPOSE OF REVIEW: Contrast-induced acute kidney injury (CI-AKI) is a serious complication. Although nonmodifiable and modifiable risk factors have been thoroughly characterized, the utility of the maximal allowable contrast dose (MACD) has not received adequate attention. The focus of this review is to provide a critical appraisal of this modifiable risk factor. RECENT FINDINGS: Several retrospective and prospective cohort studies have demonstrated that the incidence of CI-AKI among patients receiving contrast media in volumes exceeding the MACD is consistently higher compared with those who do not exceed the MACD (an average of 24 vs...
December 18, 2017: Current Opinion in Nephrology and Hypertension
https://www.readbyqxmd.com/read/29261531/impact-of-contrast-media-concentration-on-low-kilovolt-computed-tomography-angiography-a-systematic-preclinical-approach
#15
Ulrike Fleischmann, Hubertus Pietsch, Johannes G Korporaal, Thomas G Flohr, Michael Uder, Gregor Jost, Michael M Lell
OBJECTIVES: Low peak kilovoltage (kVp) protocols in computed tomography angiography (CTA) demand a review of contrast media (CM) administration practices. The aim of this study was to systematically evaluate different iodine concentrations of CM in a porcine model. MATERIALS AND METHODS: Dynamic 70 kVp CTA was performed on 7 pigs using a third-generation dual-source CT system. Three CM injection protocols (A-C) with an identical total iodine dose and iodine delivery rate (150 mg I/kg, 12 s, 0...
December 19, 2017: Investigative Radiology
https://www.readbyqxmd.com/read/29261462/contrast-media-for-coronary-ct-angiography-should-an-iso-osmolar-agent-be-used
#16
U Joseph Schoepf
No abstract text is available yet for this article.
January 2018: Radiology
https://www.readbyqxmd.com/read/29259515/intravascular-ultrasound-guided-cardiac-intervention-in-a-fontan-patient-with-allergy-to-contrast-media
#17
Jun Muneuchi, Seigo Okada, Yusaku Nagatomo, Chiaki Iida, Ryouhei Matsuoka, Masamitsu Shirozu, Mamie Watanabe
Allergy to contrast media is hazardous in patients who need multiple cardiac catheterizations. We describe the case of a 16-year-old boy who presented with fatigue and cyanosis. He had undergone a Fontan operation 14 years previously, after which he developed an allergy to iodinated contrast media. Contrast echocardiograms by manual injection of microbubbles suggested the presence of a venovenous collateral vessel from the brachiocephalic vein draining into the pulmonary vein. We used intravascular ultrasound as the sole imaging method to identify the target vessel and to guide deployment of an Amplatzer Vascular Plug II...
October 2017: Texas Heart Institute Journal
https://www.readbyqxmd.com/read/29250564/measuring-arterial-wall-perfusion-using-photon-counting-computed-tomography-ct-improving-ct-number-accuracy-of-artery-wall-using-image-deconvolution
#18
Kishore Rajendran, Shuai Leng, Steven M Jorgensen, Jill L Anderson, Ahmed F Halaweish, Dilbar Abdurakhimova, Erik L Ritman, Cynthia H McCollough
Changes in arterial wall perfusion mark the onset of atherosclerosis. A characteristic change is the increased spatial density of vasa vasorum (VV), the microvessels in the arterial walls. Measuring this increased VV (IVV) density using contrast-enhanced computed tomography (CT) has had limited success due to blooming effects from contrast media. If the system point-spread function (PSF) is known, then the blooming effect can be modeled as a convolution between the true signal and the PSF. We report the application of image deconvolution to improve the CT number accuracy in the arterial wall of a phantom and in a porcine model of IVV density, both scanned using a whole-body research photon-counting CT scanner...
October 2017: Journal of Medical Imaging
https://www.readbyqxmd.com/read/29249136/pattern-of-inpatient-referrals-to-a-drug-allergy-unit-in-kuwait
#19
M Al-Ahmad, T Rodriguez Bouza
Introduction. There is no information regarding the pattern of inpatient referrals to drug allergy units in Kuwait. Objectives. The main goal of this study is to clarify the pattern of inpatient referrals to a drug allergy unit in terms of incidence, drugs implicated and allergy evaluation outcomes in comparison with studies in other countries. Patients and Methods. A retrospective chart review of inpatient drug allergy consultations at Al-Rashed Allergy Center over a 3-year period was performed. Results. A total of 51 patients were referred for drug allergy consultations, with an estimated incidence of reported drug allergy among inpatients of 0...
November 2017: European Annals of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29247801/optimization-of-cranial-computed-tomography-in-patients-with-aids-and-clinical-suspicion-of-neural-opportunistic-pathology
#20
Silveira Filho Luiz Gonzaga da, Correia Dalmo
Cranial computed tomography (CT) is still valuable in the identification of opportunistic pathologies (OP) in AIDS' patients from low-income countries. Delayed iodinated contrast media (ICM) CT-images have the potential ability to better demonstrate inflammatory-infectious or neoplastic OP.
December 13, 2017: International Journal of Infectious Diseases: IJID
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