Non-invasive assessment of renal allograft fibrosis by dynamic sonographic tissue perfusion measurement

2011 ◽  
Vol 52 (8) ◽  
pp. 920-926 ◽  
Author(s):  
Trygve Syversveen ◽  
Knut Brabrand ◽  
Karsten Midtvedt ◽  
Erik H Strøm ◽  
Anders Hartmann ◽  
...  
Keyword(s):  
Renal Allograft ◽  
Tissue Perfusion ◽  
Perfusion Measurement ◽  
Non Invasive

Non-Invasive Diagnostic of Renal Allograft Rejection Via Urine Metabolites Using NMR-spectroscopy

2018 ◽  
Vol 102 ◽  
pp. S27
Author(s):  
Miriam Banas ◽  
Sindy Neumann ◽  
Philipp Pagel ◽  
Eric Schiffer ◽  
Dominik Chittka ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Allograft Rejection ◽  
Renal Allograft ◽  
Urine Metabolites ◽  
Renal Allograft Rejection ◽  
Non Invasive

Dynamic Sonographic Tissue Perfusion Measurement with the PixelFlux Method

2008 ◽  
pp. 115-125 ◽  
Author(s):  
Thomas Scholbach ◽  
Jakob Scholbach ◽  
Ercole Di Martino
Keyword(s):  
Tissue Perfusion ◽  
Perfusion Measurement

scholarly journals Diffuse Correlation Spectroscopy at Short Source-Detector Separations: Simulations, Experiments and Theoretical Modeling

2019 ◽  
Vol 9 (15) ◽  
pp. 3047 ◽  
Author(s):  
Karthik Vishwanath ◽  
Sara Zanfardino
Keyword(s):  
Diffusion Theory ◽  
Small Animal ◽  
Tissue Perfusion ◽  
Flow Channel ◽  
Correlation Spectroscopy ◽  
Diffuse Correlation Spectroscopy ◽  
Non Invasive ◽  
Yield Information ◽  
Theoretical Analyses

Diffuse correlation spectroscopy (DCS) has widely been used as a non-invasive optical technique to measure tissue perfusion in vivo. DCS measurements are quantified to yield information about moving scatterers using photon diffusion theory and are therefore obtained at long source-detector separations (SDS). However, short SDS DCS could be used for measuring perfusion in small animal models or endoscopically in clinical studies. Here, we investigate the errors in analytically retrieved flow coefficients from simulated and experimental data acquired at short SDS. Monte Carlo (MC) simulations of photon correlation transport was programmed to simulate DCS measurements and used to (a) examine the accuracy and validity of theoretical analyses, and (b) model experimental measurements made on phantoms at short SDS. Experiments consisted of measurements from a series of optical phantoms containing an embedded flow channel. Both the fluid flow rate and depth of the flow channel from the liquid surface were varied. Inputs to MC simulations required to model experiments were obtained from corrected theoretical analyses. Results show that the widely used theoretical DCS model is robust for quantifying relative changes in flow. We also show that retrieved flow coefficients at short SDS can be scaled to retrieve absolute values via MC simulations.

scholarly journals Dynamic Sonographic Tissue Perfusion Measurement

2009 ◽  
Vol 17 (2) ◽  
pp. 71-85 ◽  
Author(s):  
Thomas Scholbach ◽  
Jakob Scholbach
Keyword(s):  
Tissue Perfusion ◽  
Perfusion Measurement

Non-invasive immune monitoring of perforin/granzyme B in peripheral blood may predict renal allograft rejection

2003 ◽  
Vol 64 (10) ◽  
pp. S32 ◽  
Author(s):  
Leonard W. Liang ◽  
Qiuheng Zhang ◽  
David Gjertson ◽  
H.Albin Gritsch ◽  
Elaine F. Reed
Keyword(s):  
Peripheral Blood ◽  
Allograft Rejection ◽  
Renal Allograft ◽  
Granzyme B ◽  
Immune Monitoring ◽  
Renal Allograft Rejection ◽  
Non Invasive

Non-Invasive Diagnosis of Renal Allograft Inflammation Using Quantitative Urine Metabolomics

2012 ◽  
Vol 94 (10S) ◽  
pp. 1186
Author(s):  
D. Rush ◽  
R. Mandal ◽  
D. Wishart ◽  
C. Wiebe ◽  
J. Ho ◽  
...  
Keyword(s):  
Renal Allograft ◽  
Non Invasive ◽  
Urine Metabolomics

scholarly journals Dynamic tissue perfusion measurement in the reproductive organs of the female and male dogs

2014 ◽  
Vol 58 (1) ◽  
pp. 149-155 ◽  
Author(s):  
Michał Dzięcioł ◽  
Thomas Scholbach ◽  
Ewa Stańczyk ◽  
Justyna Ostrowska ◽  
Wojciech Kinda ◽  
...  
Keyword(s):  
Small Animal ◽  
Tissue Perfusion ◽  
Reproductive Organs ◽  
Perfusion Measurement ◽  
Penile Artery ◽  
Digital Evaluation ◽  
Pulsed Wave Doppler ◽  
Doppler Techniques ◽  
Evaluation Of Data ◽  
Perfusion Measurements

AbstractThe aim of this study was to investigate the usefulness of new software Pixel Flux (PXFX) for clinical evaluation of tissue perfusion in the field of reproduction in dogs. The experiment was performed on six adult Beagle dogs. Different organs and tissues of the animals were examined with the MyLab25 Gold ultrasound system. Blood flow in the ovary, testicle, prostate, the ramification of the penile artery, and the network of blood vessels of the pampiniform plexus were examined with the use of colour coded Doppler technique, and obtained data was evaluated with the PXFX software. The more objective digital evaluation of data obtained with colour Doppler sonography through the application of dynamic tissue perfusion measurements provides new opportunities for diagnosis, as well as continuous monitoring of the function of the examined tissues and organs. The use of PXFX software is strongly indicated as a tool in small animal practice as an additional method for evaluation of tissue perfusion, especially in the cases when other methods like pulsed wave Doppler techniques are difficult to be performed

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