Evaluation of Renal Cortical Perfusion by Noninvasive Power Doppler Ultrasound During Vascular Occlusion and Reperfusion

Kuwa, Toshiyuki; Cancio, Leopoldo C.; Sondeen, Jill L.; Matylevich, Natalya; Jordan, Bryan S.; McManus, Albert T.; Goodwin, Cleon W.

doi:10.1097/01.ta.0000075331.21241.80

Cited by 15 publications

(13 citation statements)

References 24 publications

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“…Power-Doppler images are mainly the expression of the blood volume in arterial and venous vessels and give a semiquantitative evaluation of renal perfusion (18). The possibility of having exact values of total renal perfusion would be of great clinical interest, but present technology, especially power Doppler, permits mainly a judgment of well-perfused or badly perfused areas (34). Therefore, the examination should be performed with a special setting of the machine to avoid artifacts of blooming, an oversaturation of the color signal that limits the detection of the structures (35).…”

Section: Color-doppler Ultrasonographymentioning

confidence: 99%

Renal ultrasonography in critically ill patients

Barozzi

Valentino

Santoro

et al. 2007

Critical Care Medicine

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Acute renal failure is a sudden and sustained decrease in the glomerular filtration rate associated with a loss of excretory function and the accumulation of metabolic waste products and water. It leads to an increase in serum urea and creatinine, usually with a decrease in urine output. Although routine surveillance of patients by means of laboratory examinations has been well defined, very little is known about renal imaging. Modern technology has provided a large number of sophisticated monitoring systems. Ultrasonography with color-Doppler study of the kidneys may be indicated as a possible monitor of renal perfusion. Ultrasonography is often used as the initial imaging procedure in the examination of patients with renal failure. Aside from excluding hydronephrosis, it is well recognized in characterizing the type of renal disease, especially in an acute setting. This article describes the use of ultrasound to achieve the proper diagnosis of acute renal diseases and to enable the appropriate and early assessment of these patients in intensive care units.

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Section: Color-doppler Ultrasonographymentioning

confidence: 99%

Renal ultrasonography in critically ill patients

Barozzi

Valentino

Santoro

et al. 2007

Critical Care Medicine

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“…Scholbach et al [17] and Kuwa et al [18] have reported similar approaches to quantify the renal cortical blood flow by imaging analysis software using color Doppler (CD) or PD image, and their methods enable the noninvasive quantitative estimation of renal blood flow. However, studies including ours unveiled several limitations regarding the clinical application of this technique.…”

Section: Discussionmentioning

confidence: 97%

Quantitative estimation of renal blood flow by power Doppler ultrasonography in renovascular hypertensive dogs

Miyajima

Yokoyama

Taira

et al. 2005

Kidney International

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“…It is superior to the CD in the imaging of renal perfusion abnormalities and allows improved evaluation of the renal parenchymal microvasculature (11-14). Recent studies using an experimental animal model have shown that PD shows the hemodynamic change of the kidney with renal artery occlusion by quantification of the PD signal (8, 9). Helenon et al (15).…”

Section: Discussionmentioning

confidence: 99%

“…Advances in technology allow the objective quantification of the PD signal by counting the number of color pixels in a specific region of interest (8, 9). We quantified the renal perfusion based on the analysis of PD images with the aid of application software developed to quantify the PD signal automatically.…”

Section: Discussionmentioning

confidence: 99%

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Power Doppler Imaging in Acute Renal Vein Occlusion and Recanalization: a Canine Model

Yoo

Kim

et al. 2008

Korean J Radiol

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ObjectiveTo evaluate the dynamic changes of the power Doppler (PD) in acute renal vein occlusion and recanalization in a canine model.Materials and MethodsWe performed a PD of the kidney during graded renal vein occlusion and recanalization induced by balloon inflation and deflation in nine dogs. The PD images were transferred to a personal computer, and the PD signals were quantified.ResultsWe observed the temporal change of the PD signal during renal vein occlusion and recanalization, with a decrease in the PD signal during occlusion and an increase during recanalization. The mean PD signal decreased gradually as the renal vein was occluded, and conversely increased gradually with sequential relief of occlusion. The sequential change of the mean value of the PD signal was statistically significant.ConclusionThe PD can detect a change in renal blood flow during acute renal vein occlusion and recanalization in a canine model. The PD may be used as a helpful tool for the early detection of acute renal vein thrombosis and the monitoring of renal perfusion.

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Evaluation of Renal Cortical Perfusion by Noninvasive Power Doppler Ultrasound During Vascular Occlusion and Reperfusion

Abstract: Noninvasive power Doppler ultrasound image intensity correlated well with invasively measured renal cortical blood flow, and may be useful during resuscitation of injured and critically ill patients.

Cited by 15 publications

References 24 publications

Renal ultrasonography in critically ill patients

Renal ultrasonography in critically ill patients

Quantitative estimation of renal blood flow by power Doppler ultrasonography in renovascular hypertensive dogs

Power Doppler Imaging in Acute Renal Vein Occlusion and Recanalization: a Canine Model

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