A Comparative Study of Methods of Estimating Renal Size in Normal Adults

Ninan, V.T.; Koshi, Kazuko; Niyamthullah, M. M.; Jacob, C. K.; Gopalakrishnan, G.; Pandey, Abhishek; Shastry, J. C. M.

doi:10.1093/ndt/5.10.851

Cited by 29 publications

(16 citation statements)

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“…1994 flowmetry, two noninvasive techniques which give useful information on the transplanted organ [4][5][6], Echography offers a picture of kidney morphology and can be used to obtain precise measures of renal size and volume [7][8][9], The analysis of Doppler spectrum allows a direct evalua tion of the blood supply to the graft, renal blood flow (RBF) [10][11][12] and renal vascular resistances (RVR).…”

Section: Introductionmentioning

confidence: 99%

The Well-Functioning Renal Graft Evaluated by Color Doppler Flowmetry

Palo

Rivolta²,

Elli³

et al. 1995

Nephron

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The value of color Doppler ultrasound in the renal transplant follow-up has been evaluated. To do so we used a standardized protocol of analysis on a group of 86 outpatients with different transplant ages and a good and stable graft function defined as a plasma creatinine level < 105 µM/l. Renal volume increased after transplantation and averaged 198 ± 54 cm³. The graft volume was positively related to the transplant age (p = 0.04). Mean renal blood flow/ 1.73 m² body surface area was 301 ± 98 ml/min, a value at the lower limit of normality. A statistical inverse relationship between renal blood flow and transplant age was found (p = 0.04). Renal vascular resistances increased along with the transplant age (p = 0.003). Renal function evaluated by creatinine plasma levels and creatinine clearance values did not show any statistical correlation with color Doppler findings in normal grafts. In conclusion, ultrasound measures allow us to obtain more sensitive information about the graft status and might be used for a better evaluation of the transplant follow-up.

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Section: Introductionmentioning

confidence: 99%

The Well-Functioning Renal Graft Evaluated by Color Doppler Flowmetry

Palo

Rivolta²,

Elli³

et al. 1995

Nephron

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“…In all patients, preoperative intravenous urography (IVU) revealed hydronephrosis at different degrees in the whole of the renal collecting system because of the stones placed in the UPJ and drainage of contrast material through both ureters. The degree of hydronephrosis in the obstructed kidney, diameters of kidneys and thickness of renal parenchyma were assessed with ultrasonography (USG), since USG has previously been shown to determine these parameters more accurately 25,26 . Since no previous examination record was available, the duration of obstruction at the time of color Doppler sonography was recorded according to the patient's clinical history based on the pain.…”

Section: Methodsmentioning

confidence: 99%

Color Doppler sonography examination of partially obstructed kidneys associated with ureteropelvic junction stone before and after percutaneous nephrolithotripsy: Preliminary report

Kılıç¹,

Altinok²,

İpek³

et al. 2005

Int J of Urology

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Aim: To evaluate resistive index (RI) changes before and after unilateral percutaneous nephrolithotripsy in chronic partially obstructed kidneys due to ureteropelvic junction (UPJ) stones. Methods: Intrarenal RI of obstructed and contralateral normal kidneys of 18 patients were recorded immediately before the operations and at postoperative days 1, 7 and 30. Postoperative RI measurements were compared with baseline values for all patients without grouping and separately for different groups according to the preoperative RI value of the obstructed kidney. Results: Mean age and symptom duration were 27.5 years and 43.8 weeks, respectively. Preoperatively and at all postoperative controls, kidney diameters and renal parenchyma thicknesses were normal in all patients. Mean RI of obstructed kidneys decreased from 0.68 to 0.63 for all patients (P = 0.032), from 0.64 to 0.63 for those with preoperative RI < 0.70 (P = 0.850) and from 0.73 to 0.62 for those with preoperative RI ≥ 0.70 (P = 0.001). In patients with preoperative RI ≥ 0.70 in obstructed kidney, significant RI decreases were recorded at postoperative day 7 and RI differences between obstructed and contralateral kidneys disappeared after then. No difference was present pre‐ and postoperatively between the mean RI of obstructed and contralateral kidneys of the patients with RI < 0.70. Mean RI of contralateral kidneys were normal preoperatively and showed no significant change postoperatively. Conclusions: Preoperative RI levels may indirectly reflect the presence of functionally significant obstruction in chronic obstructed kidneys related to UPJ stones. Patients with RI ≥ 0.70 may have a good indication for a surgical approach. Normalization of high RI occurs rapidly after percutaneous nephrolithotripsy.

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“…However, Moel H[22] showed that renal dimensions measured by using sonography were smaller than those obtained by using radiography because no geometric magnification and no osmotic diuresis caused by intravenous contrast occurred in the former study. In another study conducted on donor kidneys,[23] the measurements made by using sonography were more accurate than measurements based on plain radiographs, excretory urograms or renal angiograms.…”

Section: Ultrasound Sonographymentioning

confidence: 99%

Measurement of renal dimensions in vivo: A critical appraisal

Moorthy

Venugopal

2011

Indian J Urol

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Kidney volume is regarded as the most precise indicator of kidney size. However, volume assessment is not widely used clinically because its measurement is difficult due to the complex kidney shape. Apart from the conventional methods of measurement of renal dimensions from X-rays, ultrasound scan, computed tomography scan and magnetic resonance imaging have evolved as the three best modalities for this purpose currently. Assessment of kidney size should also be made individually since many factors like body mass index, height, gender, age, position of kidneys, sex, stenoses and number of renal arteries influence the measurements. In this paper, we have critically analysed the advantages and disadvantages of the various methods of renal morphometry, by reviewing the literature spanning over the period of 1976 – 2009.

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A Comparative Study of Methods of Estimating Renal Size in Normal Adults

Cited by 29 publications

References 0 publications

The Well-Functioning Renal Graft Evaluated by Color Doppler Flowmetry

The Well-Functioning Renal Graft Evaluated by Color Doppler Flowmetry

Color Doppler sonography examination of partially obstructed kidneys associated with ureteropelvic junction stone before and after percutaneous nephrolithotripsy: Preliminary report

Measurement of renal dimensions in vivo: A critical appraisal

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