Color Doppler sonographic appearance of renal perforating vessels in subjects with normal and impaired renal function

Bertolotto, Michele; Quaia, Emilio; Galli, G; Martinoli, Carlo; Locatelli, Martina

doi:10.1002/1097-0096(200007/08)28:6<267::aid-jcu1>3.0.co;2-p

Cited by 27 publications

(8 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Furthermore, it does not allow assessment of the different compartments of the kidney. Doppler sonography is a noninvasive procedure to detect renal artery stenosis or alterations in the peripheral vessel resistance, but does not allow accurate quantification of the tissue perfusion 6 – 8 and does not reflect renal vascular resistance. 9 Moreover, measurements of global kidney function are not suitable for the detection of diminished function in restricted areas or compartments (e.g., cortex, medulla).…”

Section: Introductionmentioning

confidence: 99%

Reproducibility of Kidney Perfusion Measurements With Arterial Spin Labeling at 1.5 Tesla MRI Combined With Semiautomatic Segmentation for Differential Cortical and Medullary Assessment

Hammon

Janka

Siegl³

et al. 2016

Medicine

View full text Add to dashboard Cite

Magnetic resonance imaging with arterial spin labeling (ASL) is a noninvasive approach to measure organ perfusion. The purpose of this study was to evaluate the reproducibility of ASL kidney perfusion measurements with semiautomatic segmentation, which allows separate quantification of cortical and medullary perfusion.The right kidneys of 14 healthy volunteers were examined 6 times on 2 occasions (3 times at each occasion). There was a 10-minute pause between each examination and a 14-day interval between the 2 occasions. Cortical, medullary, and whole kidney parenchymal perfusion was determined with customized semiautomatic segmentation software. Coefficient of variances (CVs) and intraclass correlations (ICCs) were calculated.Mean whole, cortical, and medullary kidney perfusion was 307.26 ± 25.65, 337.10 ± 34.83, and 279.61 ± 26.73 mL/min/100 g, respectively. On session 1, mean perfusion for the whole kidney, cortex, and medulla was 307.08 ± 26.91, 336.79 ± 36.54, and 279.60 ± 27.81 mL/min/100 g, respectively, and on session 2, 307.45 ± 24.65, 337.41 ± 33.48, and 279.61 ± 25.94 mL/min/100 g, respectively (P > 0.05; R2 = 0.60/0.59/0.54). For whole, cortical, and medullary kidney perfusion, the total ICC/CV were 0.97/3.43 ± 0.86%, 0.97/4.19 ± 1.33%, and 0.96/4.12 ± 1.36%, respectively. Measurements did not differ significantly and showed a very good correlation (P > 0.05; R2 = 0.75/0.76/0.65).ASL kidney measurements combined with operator-independent semiautomatic segmentation revealed high correlation and low variance of cortical, medullary, and whole kidney perfusion.

show abstract

Section: Introductionmentioning

confidence: 99%

Reproducibility of Kidney Perfusion Measurements With Arterial Spin Labeling at 1.5 Tesla MRI Combined With Semiautomatic Segmentation for Differential Cortical and Medullary Assessment

Hammon

Janka

Siegl³

et al. 2016

Medicine

View full text Add to dashboard Cite

show abstract

“…Both XGP and RRL generally coexist and a complete distinction between these two entities is possible only by histological features. son with normal subjects [54], since they enlarge in nephroangiosclerosis and present normally directed flows from the kidney towards renal capsule.…”

Section: Renal Replacement Lipomatosismentioning

confidence: 99%

“…DUS is unable to distinguish among various causes of ATN, since similar changes in renal RIs may be seen in septicaemia, hypovolaemia, rhabdomyolysis, nephrotoxic drug intake and multiple-organ failure [56]. On DUS evaluation, most patients with prerenal ARF have normal parenchymal flow, whereas patients with ATN reveal high RIs with reduction of parenchymal per-2016 not possible, revealing inverted flows from renal capsule toward the kidney [54].…”

Section: Prerenal and Renal Arfmentioning

confidence: 99%

Renal parenchymal diseases: Is characterization feasible with ultrasound?

Quaia

Bertolotto

2002

Eur Radiol

Self Cite

View full text Add to dashboard Cite

Ultrasound (US) imaging of the kidneys has greatly improved in recent years with introduction of wideband transducers and advances is beamformer technology. US is often the first imaging technique to be employed in patients with renal failure, haematuria or proteinuria, after clinical and laboratory evaluation. After conventional US evaluation, Doppler US (DUS) and resistive indices (RIs) analysis provide renal functional evaluation. Anyway, both sensitivity and specificity of conventional US and DUS in renal parenchymal disease evaluation remains low. In the initial or mild clinical stages of renal parenchymal diseases, kidneys may present normal US morphological appearance and normal RIs values, whereas different renal parenchymal diseases may reveal similar appearance on US and DUS evaluation. Besides, different renal parenchymal diseases may present some distinct features on conventional US and DUS with colour Doppler (CD) and power Doppler (PD) evaluation, even though percutaneous renal biopsy is often necessary to reach definite diagnosis. Renal vasculitides and tubular-interstitial nephropathies are more frequently identified by conventional US and DUS than glomerular nephropathies, since glomerular component accounts only for 8% of the renal parenchyma, whereas the highest percentage is occupied by vascular and tubulo-interstitial component. Follow-up of acute renal failure, during and after medical treatment, is the most useful field of employment of conventional US and DUS techniques, since a progressive lowering of RIs is correlated to a progressive recovery of renal function.

show abstract

“…The varied degree of reactivity of intraparenchymal vessels to endogenous agents against the background of type 2 diabetes determines the variability of blood flow in the cortex and medulla of the kidneys. As chronic kidney disease (CKD) progresses, the normal architectonics of the kidneys was replaced by collagen, thereby reducing the functional constant of the main organ/ To assess the vascularization of the renal parenchyma according to the the color Doppler modes in patients with type 2 diabetes and chronic pielonephritis we used a fivepoint scale of M. Bertolotto (2000) [6], improved by A.V. Borsukov et al [9].…”

Section: Introductionmentioning

confidence: 99%

Наука России: Цели И Задачи

2021

View full text Add to dashboard Cite

В сборнике научных трудов собраны материалы из различных областей научных знаний. В данном издании приведены все материалы, которые были присланы на XXVI международную научно-практическую конференцию Наука России: Цели и задачи Сборник предназначен для научных работников, преподавателей, аспирантов и студентов. Все материалы, размещенные в сборнике, опубликованы в авторском варианте. Редакция не вносила коррективы в научные статьи. Ответственность за информацию, размещенную в материалах на всеобщее обозрение, несут их авторы. Информация об опубликованных статьях будет передана в систему Российского индекса научного цитирования (РИНЦ) Электронная версия сборника доступна на сайте научноиздательского центра «Л-Журнал». Сайт центра: science-russia.ru УДК 001.1 ББК 60 http://science-russia.ru

show abstract

Color Doppler sonographic appearance of renal perforating vessels in subjects with normal and impaired renal function

Cited by 27 publications

References 20 publications

Reproducibility of Kidney Perfusion Measurements With Arterial Spin Labeling at 1.5 Tesla MRI Combined With Semiautomatic Segmentation for Differential Cortical and Medullary Assessment

Reproducibility of Kidney Perfusion Measurements With Arterial Spin Labeling at 1.5 Tesla MRI Combined With Semiautomatic Segmentation for Differential Cortical and Medullary Assessment

Renal parenchymal diseases: Is characterization feasible with ultrasound?

Наука России: Цели И Задачи

Contact Info

Product

Resources

About