Renal vascular Doppler imaging: clinical benefits of power mode.

Hélénon, O.; Corréas, Jean-Michel; Chabriais, J.; Boyer, Jean-Christophe; Melki, P.; Moreau, Jean-François

doi:10.1148/radiographics.18.6.9821193

Cited by 40 publications

(16 citation statements)

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“…Although delayed cuts show homogeneous enhancement of the IVC lumen, in most cases, they do not meet with a sufficient contrast level to identify accurately the enhanced tumor thrombus; therefore, an additional step in assessing the venous involvement is often required. Although MRI has become the gold standard for this purpose, US can be performed first since it is highly accurate in assessing IVC involvement providing that the examination is technically adequate [19,20]. The tumor thrombus is seen as a solid echoic mass lying within the venous lumen, often responsible for a venous enlargement and more or less surrounded by color flow (Fig.…”

Section: Staging Of Rccsmentioning

confidence: 99%

Ultrasound of renal tumors

et al. 2001

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Despite the limitations of US in providing a complete evaluation of renal tumors before treatment planning, initial screening, characterization of renal masses and staging of RCCs can benefit from some recent advances of the technique. One of the most relevant clinical benefits of US is the increased early detection of RCCs. Recent technical improvement of gray-scale imaging has increased US performance in the detection of small renal tumors. Combined gray-scale and color Doppler US findings may strongly suggest the histopathologic nature of a renal tumor with respect to the size, the US attenuation characteristics, and the vascular distribution of the lesion. Ultrasound contributes additional diagnostic information for differential diagnosis of some renal masses that remain equivocal at CT, including: atypical cystic lesions; solid renal tumors with poor vascularity; and angiomyolipomas with minimal fat component. Ultrasound also may provide additional diagnostic information over CT in selected cases of RCCs with venous invasion. In addition to some diagnostic and therapeutic procedures that can benefit from US guidance, intraoperative US remains the only available tool that enables to ensure renal-parenchymal-sparing surgery.

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Section: Staging Of Rccsmentioning

confidence: 99%

Ultrasound of renal tumors

et al. 2001

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“…Its advantage is of being low cost and less invasive in nature 6. Multidetector CT scan is one of the most important tool to detect renal AVMs and fistula 7. Management of renal AVM depends on signs and symptoms and cause of it.…”

Section: Discussionmentioning

confidence: 99%

Renal arteriovenous malformation: an unusual cause of recurrent haematuria

2013

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A 54-year-old woman presented with gross painless haematuria. Initial workup showed no abnormality except mild hydronephrosis on CT scan. Cystoscopy and retrograde pyelography did not find any gross lesion and her urine cytology was also negative. She had recurrent haematuria so her CT was reviewed with the radiologist with clinical suspicion of arteriovenous malformation (AVM) which was suggested by relatively increased contrast density in the hemiazygous vein and renal vein in the arterial phase. She underwent angioembiolisation of left renal AVM after which her haematuria settled.

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“…The addition of color flow mapping, power Doppler imaging, and spectral analysis has enhanced the diagnostic capabilities of gray-scale sonography in various urologic conditions. [1][2][3][4][5][6] Doppler sonography has been used to visualize ureteral jets into the bladder, 7-9 the presence and properties of which can be used to evaluate the degree of ureteral obstruction.…”

Section: Discussionmentioning

confidence: 99%