A New Method of Color Doppler Perfusion Measurement via Dynamic Sonographic Signal Quantification in Renal Parenchyma

2004 ◽  
Vol 96 (4) ◽  
pp. p99-p104 ◽  
Author(s):  
Thomas Scholbach ◽  
Ingo Dimos ◽  
Jakob Scholbach
Keyword(s):  
Color Doppler ◽  
Renal Parenchyma ◽  
New Method ◽  
Perfusion Measurement

scholarly journals NEW METHOD OF PARTIAL NEPHRECTOMY WITH SELECTIVE PARENCHYMA CLAMPING

2015 ◽  
Vol 174 (4) ◽  
pp. 62-66
Author(s):  
S. Kh. Al’-Shukri ◽  
M. S. Mosoyan ◽  
D. Yu. Semyonov ◽  
A. M. Esayan ◽  
D. M. Il’In
Keyword(s):  
Renal Cell Carcinoma ◽  
Cell Carcinoma ◽  
Partial Nephrectomy ◽  
Renal Cell ◽  
Functional Results ◽  
Renal Parenchyma ◽  
New Method ◽  
Robot Assisted ◽  
Renal Vessels

The authors suggested a new method of performance of open, laparoscopic and robot-assisted partial nephrectomy using specially developed instruments for selective parenchyma clamping in order to improve the functional results of renal cell carcinoma treatment. The operation with clamping of renal vessels was carried out in 86 cases and clamping of renal parenchyma was used in 24 cases. It was shown, that the open, laparoscopic and robot-assisted partial nephrectomy could be safely performed in conditions of selective ischemia of the renal parenchyma without clamping of renal vessels.

Three-Dimensional Volumetric Spatially Angle-Corrected Pixelwise Fetal Flow Volume Measurement

2011 ◽  
Vol 32 (S 02) ◽  
pp. E122-E128 ◽  
Author(s):  
T. Scholbach ◽  
J. Stolle ◽  
J. Scholbach
Keyword(s):  
Umbilical Vein ◽  
Color Doppler ◽  
Three Dimensional ◽  
Volume Measurement ◽  
Data Sets ◽  
Volume Data ◽  
Flow Measurements ◽  
Perfusion Measurement ◽  
Actual Flow ◽  
Relationship Of

Abstract Purpose: Early attempts to calculate fetal global perfusion used 2 D images. The results were not sufficiently reliable. That‘s why RI measurements are still in use despite the fact that they do not reflect the amount of blood passing through the fetus. We present a novel three-dimensional approach to overcome these limitations. Materials and Methods: In 124 singleton pregnancies between the 23rd and 4st gestational week, a three-dimensional color Doppler sonographic record of the umbilical cord was made, resulting in 281 volume data sets. With dedicated software (PixelFlux) the spatial angle of the umbilical vein was calculated and the true global fetal perfusion was calculated from its horizontal transection as the product of the area of all pixels and the spatial angle-corrected velocity. To validate the PixelFlux technique, phantom flow measurements were carried out. Results: Phantom flow measurements revealed a highly significant correlation of actual flow volumes and those measured by the PixelFlux technique (p < 0.001; rPearson = 0.987 – 0.991) with an even higher interobserver correlation (p < 0.001; rPearson = 0.997). We found a significant correlation of fetal volume flow to gestational age and weight (r = 0.529 at spatial angles below 30° to r = 0.724 at spatial angles below 5°) and a significant influence of the spatial angle on this correlation (p = 0.003; r = – 0.865). Conclusion: Spatial angle-corrected global fetal perfusion measurement improves existing approaches to fetal perfusion evaluation, and is feasible, simple and fast. Thus, it can be recommended to explore the relationship of fetal perfusion and disturbances of fetal development.

scholarly journals Color Doppler dynamic tissue perfusion measurement: a novel tool in the assessment of renal parenchymal perfusion in children with vesicoureteral reflux

2016 ◽  
Vol 3 ◽  
pp. 621-628 ◽  
Author(s):  
Magdalena M. Woźniak ◽  
Thomas M. Scholbach ◽  
Jakob Scholbach ◽  
Agata Pawelec ◽  
Paweł Nachulewicz ◽  
...  
Keyword(s):  
Vesicoureteral Reflux ◽  
Color Doppler ◽  
Tissue Perfusion ◽  
Perfusion Measurement

scholarly journals Intestinal Dynamic Color Doppler Sonographic Tissue Perfusion Measurement

Colonoscopy ◽  
10.5772/20720 ◽  
2011 ◽  
Author(s):  
Thomas Scholbach ◽  
Jorg Hofmann ◽  
Jakob Scholbach
Keyword(s):  
Color Doppler ◽  
Tissue Perfusion ◽  
Perfusion Measurement
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