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Power Doppler imaging in acute renal vein occlusion and recanalization: a canine model.

Yoo SY, Kim IO, Kim YI, Lee KH, Lee MW, Youn BJ, Kim WS, Yeon KM - Korean J Radiol (2008 Mar-Apr)

Bottom Line: The PD images were transferred to a personal computer, and the PD signals were quantified.The sequential change of the mean value of the PD signal was statistically significant.The PD may be used as a helpful tool for the early detection of acute renal vein thrombosis and the monitoring of renal perfusion.

View Article: PubMed Central - PubMed

Affiliation: Department of Radiology, Seoul National University College of Medicine, Seoul, Korea. kimio@radcom.snu.ac.kr.

ABSTRACT

Objective: To evaluate the dynamic changes of the power Doppler (PD) in acute renal vein occlusion and recanalization in a canine model.

Materials and methods: We 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.

Results: We 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.

Conclusion: The 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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Related in: MedlinePlus

Line graphs showing sequential changes in resistive index during graded renal vein occlusion and recanalization in nine dogs.
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Figure 5: Line graphs showing sequential changes in resistive index during graded renal vein occlusion and recanalization in nine dogs.

Mentions: In the SD study, the RI increased as the renal vein was occluded, and decreased as occlusion was relieved (Fig. 5). The sequential change, of the mean RI value in nine dogs, showed a gradual increase during balloon inflation (0.54±0.07, 0.71±0.20, 0.93±0.14 at baseline, partial, and complete occlusion, respectively), and a decrease during deflation (0.74±0.20, 0.59±0.16, 0.55±0.11 at partial, complete recanalization, and catheter removal, respectively). The sequential change in the mean RI value was also statistically significant (p < 0.01).


Power Doppler imaging in acute renal vein occlusion and recanalization: a canine model.

Yoo SY, Kim IO, Kim YI, Lee KH, Lee MW, Youn BJ, Kim WS, Yeon KM - Korean J Radiol (2008 Mar-Apr)

Line graphs showing sequential changes in resistive index during graded renal vein occlusion and recanalization in nine dogs.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC2627218&req=5

Figure 5: Line graphs showing sequential changes in resistive index during graded renal vein occlusion and recanalization in nine dogs.
Mentions: In the SD study, the RI increased as the renal vein was occluded, and decreased as occlusion was relieved (Fig. 5). The sequential change, of the mean RI value in nine dogs, showed a gradual increase during balloon inflation (0.54±0.07, 0.71±0.20, 0.93±0.14 at baseline, partial, and complete occlusion, respectively), and a decrease during deflation (0.74±0.20, 0.59±0.16, 0.55±0.11 at partial, complete recanalization, and catheter removal, respectively). The sequential change in the mean RI value was also statistically significant (p < 0.01).

Bottom Line: The PD images were transferred to a personal computer, and the PD signals were quantified.The sequential change of the mean value of the PD signal was statistically significant.The PD may be used as a helpful tool for the early detection of acute renal vein thrombosis and the monitoring of renal perfusion.

View Article: PubMed Central - PubMed

Affiliation: Department of Radiology, Seoul National University College of Medicine, Seoul, Korea. kimio@radcom.snu.ac.kr.

ABSTRACT

Objective: To evaluate the dynamic changes of the power Doppler (PD) in acute renal vein occlusion and recanalization in a canine model.

Materials and methods: We 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.

Results: We 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.

Conclusion: The 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.

Show MeSH
Related in: MedlinePlus