Perfusion imaging in renal diseases

Grenier, N.; Cornelis, F.; Bras, Y. Le; Rigou, G.; Boutault, J.-R.; Bouzgarrou, M.

doi:10.1016/j.diii.2013.08.018

Cited by 24 publications

(20 citation statements)

References 28 publications

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“…Contrast‐enhanced computed tomography, magnetic resonance imaging, and renal scintigraphy can provide information about macroperfusion . However, their use in clinical practice is limited by equipment availability, involvement of ionizing radiation, use of nephrotoxic contrast agents, or some combination of these . Contrast‐enhanced ultrasound is a functional ultrasound modality that allows assessment of both macro‐ and microperfusion by use of an IV‐administered contrast agent.…”

mentioning

confidence: 99%

“…[6][7][8] However, their use in clinical practice is limited by equipment availability, involvement of ionizing radiation, use of nephrotoxic contrast agents, or some combination of these. [6][7][8] Contrast-enhanced ultrasound is a functional ultrasound modality that allows assessment of both macroand microperfusion by use of an IV-administered contrast agent. The contrast agent consists of gas-filled microbubbles stabilized by an outer phospholipid shell that is approximately the size of red blood cells.…”

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confidence: 99%

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Evaluation of Renal Perfusion in Hyperthyroid Cats before and after Radioiodine Treatment

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Daminet

Paepe

et al. 2017

Veterinary Internal Medicne

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BackgroundHyperthyroidism and chronic kidney disease (CKD) are common in elderly cats. Consequently, both diseases often occur concurrently. Furthermore, renal function is affected by thyroid status. Because changes in renal perfusion play an important role in functional renal changes in hyperthyroid cats, investigation of renal perfusion may provide novel insights.ObjectivesTo evaluate renal perfusion in hyperthyroid cats with contrast‐enhanced ultrasound (CEUS).AnimalsA total of 42 hyperthyroid cats was included and evaluated before and 1 month after radioiodine treatment.MethodsProspective intrasubject clinical trial of contrast‐enhanced ultrasound using a commercial contrast agent (SonoVue) to evaluate renal perfusion. Time‐intensity curves were created, and perfusion parameters were calculated by off‐line software. A linear mixed model was used to examine differences between pre‐ and post‐treatment perfusion parameters.ResultsAn increase in several time‐related perfusion parameters was observed after radioiodine treatment, indicating a decreased blood velocity upon resolution of the hyperthyroid state. Furthermore, a small post‐treatment decrease in peak enhancement was present in the renal medulla, suggesting a lower medullary blood volume.Conclusions and Clinical ImportanceContrast‐enhanced ultrasound indicated a higher cortical and medullary blood velocity and higher medullary blood volume in hyperthyroid cats before radioactive treatment in comparison with 1‐month post‐treatment control.

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confidence: 99%

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confidence: 99%

Evaluation of Renal Perfusion in Hyperthyroid Cats before and after Radioiodine Treatment

Stock

Daminet

Paepe

et al. 2017

Veterinary Internal Medicne

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“…Generally, multiple imaging modalities, including CT, MRI, ultrasound, and DSA, can be used to evaluate renal blood flow and perfusion (9). However, CT or MRI cannot be performed during operations.…”

Section: Discussionmentioning

confidence: 99%

Quantitative analysis of renal blood flow during thoracic endovascular aortic repair in type B aortic dissection using syngo iFlow

Fang

Zhao

Luo

et al. 2021

Quant Imaging Med Surg

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Background: Currently, the thoracic endovascular aortic repair is the recommended clinical treatment for type B aortic dissections. Unfortunately, malperfusion or ischemia of the kidneys is a major complication of type B aortic dissections. Despite this, few studies have focused on the effects of thoracic endovascular aortic repair on blood flow in renal arteries and parenchyma. This current investigation used novel realtime imaging software to quantitatively analyze the hemodynamic changes in renal artery blood flow and perfusion before and after stent graft placement.Methods: A total of 51 patients with type B aortic dissection undergoing thoracic endovascular aortic repair between April 2017 and September 2019 were retrospectively recruited. The pre-and post-procedural digital subtraction angiography images were converted into color-coded maps using syngo iFlow for quantitative comparison. Time-intensity curves and related parameters, including the average peak ratio (avg.Pr), average delayed time to peak (avg.dTTP), and average area under the curve ratio (avg.AUCr) of the renal arteries and renal cortex were obtained and analyzed. Wilcoxon signed-rank test was used to compare iFlow parameters before and after endovascular repair. Spearman correlation analyses were performed to study iFlow parameters and renal function parameters and the estimated glomerular filtration rate (eGFR) and blood urea nitrogen (BUN).Results: A total of 102 images including 51 pre-operative and 51 post-operative image datasets were successfully post-processed. Following endovascular repair, syngo iFlow showed a significant 33.0% increase in avg.Pr (P<0.001) and a significant 35.1% increase in avg.AUCr (P<0.001) in the renal artery. Additionally, there was a significant 12.2% decrease in the avg.dTTP (P=0.001), a significant 24.5% increase in avg.Pr (P=0.004), and a significant 38.3% increase in avg.AUCr (P=0.009) in the renal cortex. Spearman correlation analysis showed that after endovascular repair there was a significant correlation between the avg.Pr of the renal artery and eGFR (r=0.30; P=0.0349), the avg.Pr of the renal cortex and eGFR (r=0.30; P=0.0300), and ^ ORCID: 0000-0003-2066-1183.

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“…КТ-перфузия. КТ перфузия -новая, неинвазивная методика, которая позволяет количественно определять изменения в скорости кровотока почек, а также функциональные изменения почек [73,74].…”

Section: ультразвуковое исследованиеunclassified

Assessment of Kidney Perfusion in Patients With Urolithiasis Using Radiological Methods

Aleksandrova¹,

Серова²,

Rudenko³

et al. 2018

Rejr

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rolithiasis (ICD) is one of one the most actual health problem in the world. The significant prevalence of urolithiasis in the population (at least 5% of the population in industrially developed countries) forces us to constantly investigate the etiology and pathogenesis, look for effective prevention mechanisms, improve diagnostic methods and develop new technologies for conservative and operative treatment. The relevance of urolithiasis in connection with global demographic shifts has become especially

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Perfusion imaging in renal diseases

Cited by 24 publications

References 28 publications

Evaluation of Renal Perfusion in Hyperthyroid Cats before and after Radioiodine Treatment

Evaluation of Renal Perfusion in Hyperthyroid Cats before and after Radioiodine Treatment

Quantitative analysis of renal blood flow during thoracic endovascular aortic repair in type B aortic dissection using syngo iFlow

Assessment of Kidney Perfusion in Patients With Urolithiasis Using Radiological Methods

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