The aims of intravascular ultrasound (IVUS) are visualization of the arterial wall, characterization of the arterial plaque, measurement of vessel diameter and endoluminal procedure assessment. The main sources of errors are: limitation of resolution, distortion of images due to non uniform angular velocity of mechanical type transducers, overestimation or underestimation of cross sectional area secondary to eccentric position or non coaxial orientation of the catheter. Awareness of these problems may prevent misinterpretations. Combined balloon imaging catheters, forward-looking sector scanners and ultrasound imaging guide wires may be achieve by miniaturization of transducers. Three dimensional imaging, blood flow quantification, local elasticity of tissues may be achieve by new softwares.
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Cost Analysis of Intravascular Ultrasound Guidance for Transjugular Intrahepatic Portosystemic Shunt Creation.
J Vasc Interv Radiol
January 2025
Division of Vascular & Interventional Radiology, Department of Radiology, Duke University Hospital, Durham, NC 27710. Electronic address:
Purpose: To compare costs of intravascular ultrasound (IVUS)-guided transjugular intrahepatic portosystemic shunt (TIPS) creation versus non-IVUS-guided TIPS creation, accounting for differences in procedure time and resource utilization.
Materials And Methods: This single institution retrospective study estimated procedure time and resource utilization from 157 consecutive elective TIPS creation procedures, of which 91 were IVUS-guided and 66 were non-IVUS-guided. Differences in procedure costs were derived using time-driven activity-based costing.
Gadopiclenol Enables Reduced Gadolinium Dose While Maintaining Quality of Pulmonary Arterial Enhancement for Pulmonary MRA: An Opportunity for Improved Safety and Sustainability.
Invest Radiol
January 2025
From the Departments of Radiology (J.F.H., S.Y.C., J.-P.G., J.S., P.N., S.B.R., T.M.G.), Biomedical Engineering (S.B.R., T.M.G.), Medical Physics (S.Y.C., S.B.R., T.M.G.), Medicine (S.B.R.), and Emergency Medicine (S.B.R.), University of Wisconsin-Madison, WI; and Department of Diagnostic and Interventional Radiology (J.F.H., J.-P.G.), University Hospital Würzburg, Würzburg, Germany.
Rationale And Objectives: Pulmonary magnetic resonance angiography (MRA) is an imaging method with proven utility for the exclusion of pulmonary embolism and avoids the need for ionizing radiation and iodinated contrast agents. High-relaxivity gadolinium-based contrast agents (GBCAs), such as gadopiclenol, can be used to reduce the required gadolinium dose for pulmonary MRA. The aim of this study was to compare the contrast enhancement performance of gadopiclenol with an established gadobenate dimeglumine-enhanced pulmonary MRA protocol.
View Article and Find Full Text PDFIntravascular Ultrasound: Seeing Is Believing.
JACC Cardiovasc Interv
January 2025
Division of Cardiology, Department of Medicine, Columbia University Irving Medical Center, New York, New York, USA.
Intravascular Ultrasound-Guided vs Angiography-Guided Drug-Coated Balloon Angioplasty in Patients With Complex Femoropopliteal Artery Disease.
JACC Cardiovasc Interv
January 2025
Severance Cardiovascular Hospital, Yonsei University College of Medicine, Seoul, Korea. Electronic address:
Background: Intravascular ultrasound (IVUS) guidance has been shown to yield favorable outcomes for endovascular treatment of femoropopliteal artery (FPA) disease with drug-coated balloon (DCB) angioplasty. However, the specific benefits of IVUS for treatment of complex FPA lesions remain uncertain.
Objectives: In this study, the authors compared the clinical impact of IVUS-guided vs angiography-guided DCB angioplasty in patients with complex or noncomplex FPA lesions.
Coronary Computed Tomography Angiography in Heart Transplant Patients: Current Insights and Future Directions.
Transplantation
November 2024
Department of Cardiology, Thorax Center, Cardiovascular Institute, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands.
Cardiac allograft vasculopathy (CAV) remains a significant challenge after heart transplantation, necessitating effective surveillance methods. This review centers around the role of coronary computed tomography angiography (CCTA) in CAV surveillance, given its unique capabilities to visualize and quantify CAV in comparison with other imaging modalities, including invasive coronary angiography and intravascular ultrasound. CCTA has shown good diagnostic performance for detecting and monitoring CAV, exemplified by a higher sensitivity and negative predictive value compared with invasive coronary angiography.
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