Searched for: subject%3A%22contrast%255C-enhanced%22
(1 - 17 of 17)
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Wei, Luxi (author), Wahyulaksana, G. (author), Boni, Enrico (author), Noothout, E.C. (author), Duncker, Dirk J. (author), Tortoli, Piero (author), van der Steen, A.F.W. (author), de Jong, N. (author), Verweij, M.D. (author), Vos, H.J. (author)
Objective: The aim of this study was to assess the feasibility and imaging options of contrast-enhanced volumetric ultrasound kidney vasculature imaging in a porcine model using a prototype sparse spiral array. Methods: Transcutaneous freehand in vivo imaging of two healthy porcine kidneys was performed according to three protocols with...
journal article 2023
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Tseng, C. (author), Jaspers, Jaap (author), Romero, Alejandra Mendez (author), Wielopolski, Piotr (author), Smits, M. (author), van Osch, Matthias J.P. (author), Vos, F.M. (author)
The arterial input function (AIF) plays a crucial role in estimating quantitative perfusion properties from dynamic susceptibility contrast (DSC) MRI. An important issue, however, is that measuring the AIF in absolute contrast-agent concentrations is challenging, due to uncertainty in relation to the measured (Formula presented.) -weighted...
journal article 2023
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Wahyulaksana, G. (author), Wei, Luxi (author), Voorneveld, J.D. (author), Hekkert, Maaike Te Lintel (author), Strachinaru, Mihai (author), Duncker, Dirk J. (author), de Jong, N. (author), van der Steen, A.F.W. (author), Vos, H.J. (author)
Assessing the coronary circulation with contrast-enhanced echocardiography has high clinical relevance. However, it is not being routinely performed in clinical practice because the current clinical tools generally cannot provide adequate image quality. The contrast agent's visibility in the myocardium is generally poor, impaired by motion...
journal article 2023
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Wei, Luxi (author), Wahyulaksana, G. (author), Boni, Enrico (author), Noothout, E.C. (author), Tortoli, Piero (author), van der Steen, A.F.W. (author), de Jong, N. (author), Verweij, M.D. (author), Vos, H.J. (author)
Volumetric echocardiography can potentially give a more complete picture of cardiac dynamics than its two-dimensional (2D) counterpart. Current clinical volumetric imaging probes have relatively low frame rates, and often require ECG gating to stitch together an entire volume. This makes measuring fast dynamics of the heart as well as imaging...
conference paper 2023
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Ergin, Bülent (author), van Rooij, Tom (author), Lima, Alexandre (author), Ince, Yasin (author), Specht, Patricia A.C. (author), Mik, E.G. (author), Kooiman, Klazina (author), de Jong, N. (author), Ince, Can (author)
Acute normovolemic hemodilution (ANH) is associated with low oxygen carrying capacity of blood and purposed to cause renal injury in perioperative setting. It is best accomplished in a perioperative setting by a colloid such as hydroxyl ethyl starch (HES) due its capacity to fill the vascular compartment and maintain colloidal pressure....
journal article 2022
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Ossenkoppele, B.W. (author), Wei, Luxi (author), Luijten, Ben (author), Vos, H.J. (author), de Jong, N. (author), Van Sloun, Ruud J.G. (author), Verweij, M.D. (author)
3-D contrast enhanced ultrasound enables better visualization of inherently 3-D vascular geometries compared to an intersecting plane. Additionally, it would allow the application of motion correction techniques for all directions. Both contrast detection and motion correction work better on high-frame rate data. However high-frame rate 3-D...
conference paper 2022
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Wahyulaksana, G. (author), Wei, Luxi (author), Schoormans, Jasper (author), Voorneveld, J.D. (author), van der Steen, A.F.W. (author), de Jong, N. (author), Vos, H.J. (author)
Suppressing tissue clutter is an essential step in blood flow estimation and visualization, even when using ultrasound contrast agents. Blind source separation (BSS)-based clutter filter for high-framerate ultrasound imaging has been reported to perform better in tissue clutter suppression than the conventional frequency-based wall filter and...
journal article 2022
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Meghana Amaregouda, Meghana (author)
Conventional early-stage breast cancer treatments such as surgery, chemotherapy and external radiotherapy despite their proven short-term efficacy tend to have adverse long-term physiological and psychological implications on the patients. This is primarily due to their inability to spare healthy tissue surrounding the tumor...
master thesis 2021
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Bhattarai, Abhisek (author), Mäkelä, Janne T.A. (author), Pouran, Behdad (author), Kröger, Heikki (author), Weinans, Harrie (author), Grinstaff, Mark W. (author), Töyräs, Juha (author), Turunen, Mikael J. (author)
Contrast-enhanced computed tomography is an emerging diagnostic technique for osteoarthritis. However, the effects of increased water content, as well as decreased collagen and proteoglycan concentrations due to cartilage degeneration, on the diffusion of cationic and nonionic agents, are not fully understood. We hypothesize that for a...
journal article 2021
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Saukko, Annina E.A. (author), Nykänen, Olli (author), Sarin, Jaakko K. (author), Nissi, Mikko J. (author), te Moller, Nikae C.R. (author), Weinans, Harrie (author), Mancini, Irina A.D. (author), Visser, Jetze (author), Brommer, Harold (author)
To prevent the progression of posttraumatic osteoarthritis, assessment of cartilage composition is critical for effective treatment planning. Posttraumatic changes include proteoglycan (PG) loss and elevated water content. Quantitative dual-energy computed tomography (QDECT) provides a means to diagnose these changes. Here, we determine the...
journal article 2021
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Voorneveld, J.D. (author), Keijzer, L.B.H. (author), Strachinaru, Mihai (author), Bowen, Daniel J. (author), Mutluer, Ferit O. (author), van der Steen, A.F.W. (author), Ten Cate, Folkert (author), de Jong, N. (author), Vos, H.J. (author), Van den Bosch, Annemien E. (author), Bosch, Johan G. (author)
High-frame-rate (HFR) echo-particle image velocimetry (echoPIV) is a promising tool for measuring intracardiac blood flow dynamics. In this study, we investigate the optimal ultrasound contrast agent (UCA: SonoVue) infusion rate and acoustic output to use for HFR echoPIV (PRF = 4900 Hz) in the left ventricle (LV) of patients. Three infusion...
journal article 2021
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Martinelli, J. (author), Tei, Lorenzo (author), Geninatti Crich, Simonetta (author), Alberti, Diego (author), Djanashvili, K. (author)
It is known that phenylboronic acid (PBA) can target tumor tissues by binding to sialic acid, a substrate overexpressed by cancer cells. This capability has previously been explored in the design of targeting diagnostic probes such as Gd- and 68Ga-DOTA-EN-PBA, two contrast agents for magnetic resonance imaging (MRI) and positron emission...
journal article 2021
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Bhattarai, Abhisek (author), Pouran, Behdad (author), Mäkelä, Janne T.A. (author), Shaikh, Rubina (author), Honkanen, Miitu K.M. (author), Prakash, Mithilesh (author), Kröger, Heikki (author), Grinstaff, Mark W. (author), Weinans, Harrie (author), Jurvelin, Jukka S. (author), Töyräs, Juha (author)
Cationic computed tomography contrast agents are more sensitive for detecting cartilage degeneration than anionic or non-ionic agents. However, osteoarthritis-related loss of proteoglycans and increase in water content contrarily affect the diffusion of cationic contrast agents, limiting their sensitivity. The quantitative dual-energy...
journal article 2020
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Mozaffarzadeh, M. (author), Varnosfaderani, Mehdi H.H. (author), Sharma, Arunima (author), Pramanik, Manojit (author), de Jong, N. (author), Verweij, M.D. (author)
In acoustic-resolution photoacoustic microscopy (AR-PAM) systems, the lateral resolution in the focal zone of the ultrasound (US) transducer is determined by the numerical aperture (NA) of the transducer. To have a high lateral resolution, a large NA is used. However, the larger the NA, the smaller the depth of focus [DOF]. As a result, the...
journal article 2019
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van Schie, J.J.N. (author), Lavini, Cristina (author), van Vliet, L.J. (author), Kramer, Gem (author), Pieters - van den Bos, Indra (author), Marcus, H.J.J. (author), Stoker, Jaap (author), Vos, F.M. (author)
Background: Pharmacokinetic (PK) models can describe microvascular density and integrity. An essential component of PK models is the arterial input function (AIF) representing the time-dependent concentration of contrast agent (CA) in the blood plasma supplied to a tissue. Purpose/Hypothesis: To evaluate a novel method for subject-specific...
journal article 2018
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Daeichin, Verya (author), van Rooij, Tom (author), Skachkov, Ilya (author), Ergin, Bulent (author), Specht, Patricia A.C. (author), Lima, Alexandre (author), Ince, Can (author), Bosch, Johan G. (author), van der Steen, A.F.W. (author), de Jong, N. (author), Kooiman, Klazina (author)
Although high-frequency ultrasound imaging is gaining attention in various applications, hardly any ultrasound contrast agents (UCAs) dedicated to such frequencies (>15 MHz) are available for contrast-enhanced ultrasound (CEUS) imaging. Moreover, the composition of the limited commercially available UCAs for high-frequency CEUS (hfCEUS) is...
journal article 2017
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Villamar Jorgge, J.A. (author)
In the present study, the effect of concentration, osmolality and charge of x-ray contrast agents on their diffusion and equilibrium distribution across different zones of cartilage was investigated. Full-thickness cartilage discs (Ø = 8.5 mm, n = 3) were extracted from healthy equine femoral condyle (n = 2). The diffusion of four different...
master thesis 2014
Searched for: subject%3A%22contrast%255C-enhanced%22
(1 - 17 of 17)