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This study aims to explore the feasibility of applying the "Three-Low" technique (low injection rate, low iodine contrast volume, low radiation dose) in coronary CT angiography (CCTA). We prospectively collected data from 90 patients who underwent CCTA at our hospital between 2021 and 2024. The patients were randomly assigned to either the experimental group (n = 45) or the control group (n = 45).
View Article and Find Full Text PDFNovel intravascular tantalum oxide-based contrast agent achieves improved vascular contrast enhancement and conspicuity compared to Iopamidol in an animal multiphase CT protocol.
Eur Radiol Exp
October 2024
Department of Radiology and Biomedical Imaging, University of California, San Francisco, CA, USA.
Background: To assess thoracic vascular computed tomography (CT) contrast enhancement of a novel intravenous tantalum oxide nanoparticle contrast agent (carboxybetaine zwitterionic tantalum oxide, TaCZ) compared to a conventional iodinated contrast agent (Iopamidol) in a rabbit multiphase protocol.
Methods: Five rabbits were scanned inside a human-torso-sized encasement on a clinical CT system at various scan delays after intravenous injection of 540 mg element (Ta or I) per kg of bodyweight of TaCZ or Iopamidol. Net contrast enhancement of various arteries and veins, as well as image noise, were measured.
Radiocontrast Medium-Induced Kounis Syndrome in a Dialysis Patient: A Case Report.
Cureus
May 2024
Emergency and Critical Care Medicine, Komaki City Hospital, Komaki, JPN.
Article Synopsis
- * After experiencing respiratory distress and chest pain shortly after the radiocontrast medium was administered, the patient showed signs of cardiac ischemia based on ECG and echocardiogram results, leading to the Kounis syndrome diagnosis.
- * Following an adrenaline injection that stabilized his condition, he was monitored without immediate coronary angiography, emphasizing the need for careful evaluation before such interventions in patients with similar radiocontrast-related reactions.
Is ischemic stimulus involved for J wave augmentation during coronary angiography and intracoronary administration of normal saline?
Pacing Clin Electrophysiol
August 2024
Research and Development Division, Tachikawa Medical Center, Nagaoka, Japan.
Background: J waves may be augmented by coronary angiography (CAG) or intracoronary drug administration but the underlying mechanism is unknown.
Purpose: The effect of intracoronary normal saline (NS) on J waves were investigated.
Patients And Methods: After the standard CAG using iopamidol (Iopamiro Inj), NS was injected into the right coronary artery in 10 patients with and eight patients without J waves at the baseline.
Comparison of Safety and Diagnostic Efficacy of Iohexol 240 mgI/mL, Iopamidol 250 mgI/mL, and Iodixanol 270 mgI/mL in Cerebral Angiography: A Prospective, Multicenter Study.
Neurointervention
July 2023
Department of Radiology, Ewha Womans University Seoul Hospital, Seoul, Korea.
Purpose: This multicenter prospective study aimed to evaluate the quality and diagnostic effectiveness of cerebral angiography images obtained using low-concentration iodinated contrast agents (iohexol 240 mgI/mL, iopamidol 250 mgI/mL, and iodixanol 270 mgI/mL) and to assess the safety thereof. The study addresses the need for safer contrast agent alternatives without compromising the diagnostic quality of identifying cerebrovascular disease.
Materials And Methods: Conducted in 5 medical centers in South Korea, we enrolled patients aged 19 years or older who were referred for diagnostic cerebral angiography under non-emergency conditions, excluding those with specific health conditions and sensitivities.
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