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https://www.readbyqxmd.com/read/28540480/the-effect-of-four-phasic-versus-three-phasic-contrast-media-injection-protocols-on-extravasation-rate-in-coronary-ct-angiography-a-randomized-controlled-trial
#1
Júlia Karády, Alexisz Panajotu, Márton Kolossváry, Bálint Szilveszter, Ádám L Jermendy, Andrea Bartykowszki, Mihály Károlyi, Csilla Celeng, Béla Merkely, Pál Maurovich-Horvat
OBJECTIVES: Contrast media (CM) extravasation is a well-known complication of CT angiography (CTA). Our prospective randomized control study aimed to assess whether a four-phasic CM administration protocol reduces the risk of extravasation compared to the routinely used three-phasic protocol in coronary CTA. METHODS: Patients referred to coronary CTA due to suspected coronary artery disease were included in the study. All patients received 400 mg/ml iomeprol CM injected with dual-syringe automated injector...
May 24, 2017: European Radiology
https://www.readbyqxmd.com/read/28540464/comparison-of-lesion-enhancement-between-bb-cube-and-3d-spgr-images-for-brain-tumors-with-1-5-t-magnetic-resonance-imaging
#2
Hirokazu Hasegawa, Ryuichiro Ashikaga, Kaoru Okajima, Tetsuya Wakayama, Mitsuharu Miyoshi, Yasumasa Nishimura, Takamichi Murakami
PURPOSE: This study aimed to compare the detectability of neoplastic lesion enhancement after gadolinium-based contrast media injection in three-dimensional T1-weighted black blood Cube (3D-T1W BB Cube) and three-dimensional T1-weighted fast spoiled gradient-echo (3D-T1W fast SPGR) images obtained with 1.5-T magnetic resonance imaging (MRI). MATERIALS AND METHODS: Phantom and clinical studies were performed to compare the lesion detectability and contrast ratio (CR) between 3D-T1W BB Cube and 3D-T1W fast SPGR pulse sequences...
May 24, 2017: Japanese Journal of Radiology
https://www.readbyqxmd.com/read/28540212/infarct-characterization-using-ct
#3
REVIEW
Ludovico La Grutta, Patrizia Toia, Erica Maffei, Filippo Cademartiri, Roberto Lagalla, Massimo Midiri
Myocardial infarction (MI) is a major cause of death and disability worldwide. The incidence is not expected to diminish, despite better prevention, diagnosis and treatment, because of the ageing population in industrialized countries and unhealthy lifestyles in developing countries. Nowadays it is highly requested an imaging tool able to evaluate MI and viability. Technology improvements determined an expansion of clinical indications from coronary plaque evaluation to functional applications (perfusion, ischemia and viability after MI) integrating additional phases and information in the mainstream examination...
April 2017: Cardiovascular Diagnosis and Therapy
https://www.readbyqxmd.com/read/28540198/contrast-induced-acute-kidney-injury-a-review-of-practical-points
#4
REVIEW
Sercin Ozkok, Abdullah Ozkok
Contrast-induced acute kidney injury (CI-AKI) is one of the most common causes of AKI in clinical practice. CI-AKI has been found to be strongly associated with morbidity and mortality of the patients. Furthermore, CI-AKI may not be always reversible and it may be associated with the development of chronic kidney disease. Pathophysiology of CI-AKI is not exactly understood and there is no consensus on the preventive strategies. CI-AKI is an active research area thus clinicians should be updated periodically about this topic...
May 6, 2017: World Journal of Nephrology
https://www.readbyqxmd.com/read/28534182/imaging-children-suffering-from-lymphoma-an-evaluation-of-different-18-f-fdg-pet-mri-protocols-compared-to-whole-body-dw-mri
#5
Julian Kirchner, Cornelius Deuschl, Bernd Schweiger, Ken Herrmann, Michael Forsting, Christian Buchbender, Gerald Antoch, Lale Umutlu
OBJECTIVES: The objectives of this study were to evaluate and compare the diagnostic potential of different PET/MRI reading protocols, entailing non-enhanced / contrast-enhanced and diffusion-weighted (18)F-FDG PET/MR imaging and whole-body diffusion-weighted MRI for lesion detection and determination of the tumor stage in pediatric lymphoma patients. METHODS: A total of 28 (18)F-FDG PET/MRI datasets were included for analysis of four different reading protocols: (1) PET/MRI utilizing sole unenhanced T2w and T1w imaging, (2) PET/MRI utilizing additional contrast enhanced sequences, (3) PET/MR imaging utilizing unenhanced, contrast enhanced and DW imaging or (4) WB-DW-MRI...
May 22, 2017: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28532702/trimetazidine-in-the-prevention-of-contrast-induced-nephropathy-in-chronic-kidney-disease
#6
Tarek A Ibrahim, Ramzy H El-Mawardy, Ahmed S El-Serafy, Ehab M El-Fekky
BACKGROUND: Contrast induced nephropathy (CIN) may be defined as Acute Renal Failure (ARF) that occurs within 24-72h of exposure to intra-venous or intra-arterial iodinated contrast media that cannot be attributed to other causes. CIN occurs in up to 5% of hospitalized patients with normal renal function prior to injection of contrast media. It occurs more frequently in patients with renal impairment particularly if associated with diabetic nephropathy. Among all procedures utilizing contrast agents for either diagnostic or therapeutic purposes, coronary angiography and percutaneous coronary interventions are associated with the highest rates of CIN...
February 10, 2017: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/28531884/pre-interventional-kynurenine-predicts-medium-term-outcome-after-contrast-media-exposure-due-to-coronary-angiography
#7
Christoph Reichetzeder, Fabian Heunisch, Gina von Einem, Oleg Tsuprykov, Karl-Heinz Kellner, Thomas Dschietzig, Axel Kretschmer, Berthold Hocher
BACKGROUND/AIMS: Contrast induced acute kidney injury (CI-AKI) remains a serious complication of contrast media enhanced procedures like coronary angiography. There is still a lack of established biomarkers that help to identify patients at high risk for short and long-term complications. The aim of the current study was to evaluate plasma kynurenine as a predictive biomarker for CI-AKI and long-term complications, measured by the combined endpoint "major adverse kidney events" (MAKE) up to 120 days after CM application...
May 25, 2017: Kidney & Blood Pressure Research
https://www.readbyqxmd.com/read/28528465/contrast-induced-nephropathy-cin-of-patients-with-renal-dysfunction-in-ct-examination
#8
Yasuhiro Fukushima, Hitomi Miyazawa, Junpei Nakamura, Ayako Taketomi-Takahashi, Takayuki Suto, Yoshito Tsushima
PURPOSE: To investigate the incidence and risk factors of contrast induced nephropathy (CIN) after contrast enhanced (CE) computed tomography (CT) in patients with renal dysfunction. MATERIALS AND METHODS: Two hundred sixteen inpatients with estimated glomerular filtration rates (eGFR) <60 ml/min/1.73 m(2) underwent CE CT using iodine doses of 420 or 480 mg I/kg. Data of all enrolled patients was collected for baseline serum creatinine level (SCr), post-CE CT SCr within 3 days after CE CT, and conditions considered risk factors for CIN [renal dysfunction, contrast media dose, advanced age, diabetes mellitus, no intravenous hydration, cardiac dysfunction (left ventricular ejection fraction <60%) and intensive-care unit (ICU) admission]...
May 20, 2017: Japanese Journal of Radiology
https://www.readbyqxmd.com/read/28516271/three-dimensional-image-fusion-guidance-for-transjugular-intrahepatic-portosystemic-shunt-placement
#9
Vania Tacher, Arthur Petit, Haytham Derbel, Luigi Novelli, Manuel Vitellius, Fourat Ridouani, Alain Luciani, Alain Rahmouni, Christophe Duvoux, Chady Salloum, Mélanie Chiaradia, Hicham Kobeiter
INTRODUCTION: To assess the safety, feasibility and effectiveness of image fusion guidance with pre-procedural portal phase computed tomography with intraprocedural fluoroscopy for transjugular intrahepatic portosystemic shunt (TIPS) placement. MATERIALS AND METHODS: All consecutive cirrhotic patients presenting at our interventional unit for TIPS creation from January 2015 to January 2016 were prospectively enrolled. Procedures were performed under general anesthesia in an interventional suite equipped with flat panel detector, cone-beam computed tomography (CBCT) and image fusion technique...
May 17, 2017: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/28515407/comparison-of-the-outback-%C3%A2-elite-reentry-catheter-and-the-bi-directional-approach-after-failed-antegrade-approach-for-femoro-popliteal-occlusive-disease
#10
Daizo Kawasaki, Masashi Fukunaga, Tsuyoshi Nakata, Masaaki Kato, Nobukazu Ohkubo
AIM: A successful antegrade wire crossing for femoro-popliteal chronic total occlusion (FP-CTO) is still a technical challenge. We attempted to demonstrate the safety and feasibility of the OUTBACK(®) Elite reentry catheter and the bi-directional approach for failed FP-CTO cases with the antegrade approach. METHODS: Endovascular therapy for FP-CTO was performed in 219 lesions from May 2013 to December 2016 at Morinomiya Hospital. We retrospectively analyzed the data of 43 consecutive lesions which underwent endovascular therapy using the bi-directional approach with distal access and the mono-directional approach with the OUTBACK(®) Elite reentry catheter for FP-CTO lesions...
May 17, 2017: Journal of Atherosclerosis and Thrombosis
https://www.readbyqxmd.com/read/28511219/-innovative-ultrasound-contrast-enhanced-ultrasound-of-the-kidneys
#11
Konrad Stock, Herbert Kübler, Tobias Maurer, Daniel Weiss, Hans-Peter Weskott, Uwe Heemann
Ultrasound examination of the kidneys with grey-scale imaging and colour Doppler ultrasound is the most common renal imaging modality. A few years ago, contrast-enhanced ultrasound (CEUS) emerged as a non-invasive perfusion imaging modality to evaluate the renal vessels and microvascularisation. These contrast media contain intravenous microbubbles (sulfur hexafluoride), which have no deleterious effect on renal function. Being free of iodine, they also pose no risk for the thyroid gland. CEUS of the kidneys is mainly used for the evaluation of renal cysts and the analysis of renal lesions suspicious for malignancy...
April 2017: Aktuelle Urologie
https://www.readbyqxmd.com/read/28506919/novel-dye-less-and-fluoro-less-approach-to-cryoballoon-pulmonary-vein-occlusion-assessment
#12
Boaz Avitall, Arthur Kalinski, G Stephen Kocheril, Timothy G Laske, Nicolas Coulombe
BACKGROUND: Occlusion of pulmonary veins is essential for PV isolation using the Cryo balloon. Currently occlusion is arbitrarily determined using fluoroscopy and contrast media. This study aimed to create an objective measure without utilizing excessive fluoroscopy and no contrast media. OBJECTIVE: Ensure PV occlusion without fluoroscopy and contrast dye. METHODS: In 4 in vivo hearts 113 PV occlusions were tested with a 50% cold dye saline mix at 4°C...
May 8, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28503468/extravasation-of-the-contrast-material-during-voiding-cystourethrography-in-a-chronic-spinal-cord-injury-patient-a-case-report
#13
Sohyun Kwon, Donghwi Park, Hoon Hoon Lee, Ju Seok Ryu
Neurogenic bladder is common in most spinal cord injury patients. Voiding cystourethrography (VCUG) is recommended in these patients to detect urinary tract complications. However, rare but serious complications may occur during VCUG, although VCUG is generally safe. There are several case reports of bladder rupture occurring in pediatric patients. Here, we report the first case of iatrogenic bladder rupture in an adult spinal cord injury patient in Korea. Particularly, extravasation of contrast without manual instillation has hardly ever been reported...
April 2017: Annals of Rehabilitation Medicine
https://www.readbyqxmd.com/read/28501080/intravenous-contrast-induced-nephropathy-the-rise-and-fall-of-a-threatening-idea
#14
REVIEW
Lyndon Luk, Jonathan Steinman, Jeffrey H Newhouse
Contrast-induced nephropathy (CIN) has been considered to be a cause of renal failure for over 50 years, but careful review of past and recent studies reveals the risks of CIN to be overestimated. Older studies frequently cited the use of high-osmolality contrast media, which have since been replaced by low-osmolality contrast media, which have lower risks for nephropathy. In addition, literature regarding CIN typically describes the incidence following cardiac angiography, whereas the risk of CIN from intravenous injection is much lower...
May 2017: Advances in Chronic Kidney Disease
https://www.readbyqxmd.com/read/28501076/intravenous-contrast-friend-or-foe-a-review-on-contrast-induced-nephropathy
#15
REVIEW
Catherine Do
Intravenous iodinated contrast is used in many contrasted imaging studies ranging from computed tomography to angiography. The risks of contrast-induced nephropathy (CIN) and its incidence have not been clearly defined. Most iodinated contrast media used today are hypertonic compared with serum osmolality and pose biological risks. However, the risk of CIN in the general population may be overestimated. Confounding risk factors may contribute to acute kidney injury other than attributable risk of contrast exposure...
May 2017: Advances in Chronic Kidney Disease
https://www.readbyqxmd.com/read/28496044/comparison-of-nephrotoxicity-between-two-gadolinium-contrasts-gadodiamide-and-gadopentetate-in-patients-with-mildly-diminished-renal-failure
#16
Shokichi Naito, Hiromi Tazaki, Tomoko Okamoto, Kazuhiro Takeuchi, Shinichi Kan, Yasuo Takeuchi, Kouju Kamata
Although gadolinium (Gd)-based contrast media have been found to be nephrotoxic, their nephrotoxicity, and the dependence of nephrotoxicity on chelate types, have not been assessed in patients with normal or mildly diminished renal failure. This prospective, randomized study compared the nephrotoxicity of low doses of the nonionic Gd-based contrast medium gadodiamide (Omniscan®) and the ionic Gd-based contrast medium gadopentetate (Magnevist®) in patients with serum creatinine < 1.6 mg/dL. Patients aged 20 to 80 years, weighing 45 to 70 kg and with normal or < 1...
2017: Journal of Toxicological Sciences
https://www.readbyqxmd.com/read/28491165/carbon-dioxide-angiography-and-arterial-embolization-could-successfully-control-postpartum-uterine-hemorrhage-for-the-patient-with-hypersensitivity-to-iodine-compound
#17
Sayaka Kawashita, Masanori Kaneuchi, Daisuke Nakayama, Naoki Fuchi, Yuko Murakami, Kiyonori Miura, Hideaki Masuzaki
Transcatheter arterial embolization has become a common management option for intractable postpartum uterine hemorrhage. Iodinated contrast agents are commonly used for embolotherapy but cannot be used in patients with renal dysfunction or iodine allergy. A 37-year-old woman spontaneously delivered a healthy girl but developed severe postpartum uterine hemorrhage, probably due to placenta accrete. Contrast-enhanced computed tomography revealed extravasation of the iodinated contrast agent into the uterine cavity...
June 2017: Radiology case reports
https://www.readbyqxmd.com/read/28487383/monitoring-tumor-response-to-anti-vascular-therapy-using-non-contrast-intravoxel-incoherent-motion-diffusion-weighted-mri
#18
Changzheng Shi, Dexiang Liu, Zeyu Xiao, Dong Zhang, Guanfu Liu, Guanshu Liu, Hanwei Chen, Liangping Luo
Anti-vascular therapy is a promising approach to the treatment of non-small-cell lung cancer (NSCLC), where an imaging modality capable of longitudinally monitoring treatment response could provide early prediction of the outcome. In this study, we sought to investigate the feasibility of using intravoxel incoherent motion (IVIM) diffusion MRI to quantitatively assess the efficacy of the treatments of a vascular disrupting agent CA4P or its combination with bevacizumab (BV) on experimental NSCLC tumors. CA4P caused a strong but reversible effect on tumor vasculature: all perfusion-related parameters-D*, f, fD*, and K(trans)-initially showed a decrease of 30%-60% at two hours and then fully recovered to baseline on day 2 for CA4P treatment or on days 4-8 for CA4P + BV treatment; the diffusion coefficient in tumors decreased initially at two hours and then increased from day 2 to day 8...
May 9, 2017: Cancer Research
https://www.readbyqxmd.com/read/28485198/pros-and-cons-of-3d-image-fusion-in-endovascular-aortic-repair-a-systematic-review-and-meta-analysis
#19
Seline R Goudeketting, Stefan G H Heinen, Çağdaş Ünlü, Daniel A F van den Heuvel, Jean-Paul P M de Vries, Marco J van Strijen, Anna M Sailer
PURPOSE: To systematically review and meta-analyze the added value of 3-dimensional (3D) image fusion technology in endovascular aortic repair for its potential to reduce contrast media volume, radiation dose, procedure time, and fluoroscopy time. METHODS: Electronic databases were systematically searched for studies published between January 2010 and March 2016 that included a control group describing 3D fusion imaging in endovascular aortic procedures. Two independent reviewers assessed the methodological quality of the included studies and extracted data on iodinated contrast volume, radiation dose, procedure time, and fluoroscopy time...
May 1, 2017: Journal of Endovascular Therapy
https://www.readbyqxmd.com/read/28477180/value-of-flat-detector-computed-tomography-angiography-with-intravenous-contrast-media-injection-in-the-evaluation-and-treatment-of-acutely-ruptured-aneurysms-of-the-acoma-complex-a%C3%A2-single-center-experience-in-15%C3%A2-cases
#20
Julie Rösch, Stefan Lang, Philipp Gölitz, Bernd Kallmünzer, Karl Rössler, Arnd Doerfler, Tobias Struffert
OBJECTIVE: To illustrate the added value of flat-detector computed tomography angiography with intravenous contrast media injection (intravenous FDCTA) in the evaluation of complex A1/A2/AcomA aneurysms. PATIENTS AND METHODS: We retrospectively reviewed 15 patients with ruptured aneurysms. In each patient, an intravenous FDCTA was performed and its diagnostic value investigated. RESULTS: In all patients, FDCTA contributed relevant additional information concerning the anatomy of the A1/A2/AcomA complex and the relationship of the aneurysm neck to these vascular structures, which could not be gained by 2D- and 3D-DSA, and changed the management in 33% of the patients (5 out of 15)...
May 5, 2017: Clinical Neuroradiology
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