CENTELLOGRAMA RENAL PDF

Translation of centellograma | Se realizó centellograma renal a 87 niños menores de 2 años. Si el paciente tiene un carcinoma de células transicionales (en la pelvis renal, el uréter o la vejiga), algunas veces un examen especial de la muestra de orina. Consideramos patología relevante al hallazgo de RVU > grado III y/o centellograma renal mos 45 pacientes (31 niñas), que.

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Directory of Open Access Journals Sweden. Full Text Available Aim: Dynamic renal scintigraphy can demonstrate both structural and functional renal pathologies. Our aim was to evaluate renal functions in children by technetiumm diethylenetriaminepentaacetic acid Tcm DTPA dynamic renal scintigraphyand todetermine the frequency of scintigraphically detectable atrophic kidneys.

Dynamic renal scintigraphy studies of 17 children 12 males, five females with urinary system complaints, having a mean age of 6. The functions of 34 kidneys rrenal evaluated. Decreased perfusion of the left and right kidneys was detected in Prolongation in Tmax of the left and right kidneys was shown in Glomerular filtration rate of the left and right kidneys was normal in Delayed excretion of the left and right kidneys wasdetected in Stasis of urine in the left and right kidneys which responded to IV diuretics wasdemonstrated in Dynamic renal scintigraphy findings in favour of left and right renal atrophy were cetellograma in Dynamic renal scintigraphy with Tcm DTPA was found to be useful in the evaluation of renal functions of children and in determining the frequency of atrophic kidneys.

To evaluate the centellorgama and specificity of captopril renal scan for renovascular hypertension, we employed the captopril renal scan in conjunction with renal angiography in centelllgrama patients, kidneys, who were referred to evaluate the cause of hypertension.

We defined the renovascular hypertension by the criteria of demonstration of renal artery stenosis by angiography, and improvement or cure of hypertension by revascularization. Visual and quantitative evaluation of 99m Tc- DTPA renal scan was performed pre and post captopril administration.

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The causes of renovascular hypertension in 81 patients were Takayasu’s arteritis, fibromuscular dysplasia, atherosclerosis, essential hypertension, chronic pyelonephritis etc. The causes of false negative cases were nonfunctioning kidney due to complete obstruction or long duration of disease in basal scan, segmental branch artery stenosis, unknown causes, and suspicious true negative cases without confirmation.

The false centelllograma cases were abdominal aortic stenosis or aneurysm, dehydration, unknown causes, and suspicious true positive cases. We conclude that captopril renal scintigraphy is highly sensitive, reasonably specific diagnostic method and comparable to other techniques very favorably. Tcm- DTPA renal scintigraphy and detection centellobrama intrarenal reflux.

The intrarenal reflux plays the key role in the etiology of reflux nephropathy and its detection is of utmost importance in evaluating possible damage in kidney with reflux. In kidneys children with different degree of vesicoureteric reflux VURdynamic renal scintigraphy with Tcm- DTPA in zoom mode was performed. From each study 6 functional images of mean time cenrellograma generated, cenyellograma contour superimposed on each, and time activity curves TAC over possible areas of increased mean time were generated.

In these study we analyzed only areas of increased mean time over the outer contour of the kidney which corresponds to the renal parenchyma. In later functional images of the mean time we found 53 focal retentions over the part of the kidney which corresponds to the renal cortex 33 in upper, 5 in middle and 15 in lower part of the kidney.

TAC-s generated over these areas exhibited a sharp increase of activity on the descending part of the curves. We propose that the return of activity from the collecting system to the kidney cortex represents intrarenal reflux. In our opinion, analysis of functional images of the mean time could be a method for more accurate detection of intrarenal reflux and indicating the children with high risk to acquire renal scarring.

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Baseline Tcm DTPA renal scintigraphy as a predictor of outcome in children with urinary tract infection. The outcome of cortical defects was evaluated on follow-up Tcm DMSA scintigraphy by visual analysis.

There were 24 patients with healing cortical defects and 8 with cortical scarring. Average ICRs of patients with healing defects were 1. ICR more than 0. The sensitivity, specificity, positive predictive value, and negative predictive value of ICR was Ipsilateral to contralateral kidney ratio on baseline Tcm DPTA renal scintigraphyespecially at blood flow phase, is helpful in predicting outcome of children with UTI.

Tcm DTPA perfusion scintigraphy and color coded duplex sonography in the evaluation of minimal renal allograft perfusion. The clinical impact of perfusion scintigraphy versus color coded Duplex sonography was evaluated, with respect to their potential in assessing minimal allograft perfusion in vitally threatened kidney transplants, i. From July to August the grafts of 15 out of a total of patients were vitally threatened.

For scintigraphic evaluation of transplant perfusion analog scans up to 60 min postinjection, and time-activity curves over the first 60 sec after injection of MBq Tcm diethylenetriaminepentaacetate acid DTPA were used and classified by a perfusion score, the time between renal and iliac artery peaks TDiff and the washout of the renogram curve.

Additionally, evaluation of excretion function and assessment of vascular or urinary leaks were performed. By color coded Duplex sonography the perfusion in all sections of the graft as well as the vascular anastomoses were examined and the maximal blood flow velocity Vmax and the resistive index RI in the renal artery were determined by means of the pulsed Doppler device. Pathologic-anatomical diagnosis was achieved by either biopsy or post-explant histology in all grafts. The results were confirmed either by angiography in digital subtraction technique DSA or the clinical follow up.

In summary, perfusion scintigraphy and color coded Duplex sonography are comparable modalities to assess kidney graft perfusion. In clinical practice scintigraphy and colorcoded Doppler sonography can replace digital subtraction angiography in the evaluation of minimal allograft perfusion.

Escola de Saude Publica. The comparisons were performed using Wilcoxon signed rank test. Donor evaluation of extended time 99mTc DTPA renal scintigraphy for added information to guide donor kidney selection: In donor patients a short time renal scintigraphy to calculate GFR by gates formula is widely accepted in clinical practice.

The purpose of this study was to evaluate significance of extended time 99m Tc DTPA renogram for appropriate selection of donor kidney.

Patients were adequately hydrated before the study. Pre and post syringe counts were also taken. Standard protocol was used for processing. GFR was found to be in the range of Whereas in 2 patients 3. There were 7 patients Contribution of 99mTc- DTPA dynamic renal scintigraphy with furosemide test in the exploration of low grade urethra-pelvic junction syndrome. Report of 17 cases. Introduction The renal scintigraphy using 99m Tc- DTPA with furosemide test constitutes a noninvasive and functional method that is of appreciable interest in the exploration of the upper urinary tract and in the evaluation of the separate renal function.

It distinguishes the functional character of dilation from organic obstruction needing surgery or endoscopic treatment. Material and methods We report, through this work, the observations of 17 patients with a low grade urethra-pelvic junction syndrome detect by intravenous urography I.

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The evaluation of images obtained consisted of analysis of urethra-pelvic permeability taking into account the semiquantitative parameters of time-activity curve or isotopic nephrogram I. Results On the 17 studied cases, the sex-ratio was equal to 1. Renal scintigraphy categorized four patients groups. Discussion 99m Tc- DTPA renal scintigraphy with furosemide test allowed, through our study, to obviate the limits of IVU and manometric explorations to distinguish functional dilation of organic obstruction.

It permits the improvement of treatment with a favourable dosimetry.

These data indicated that 99m Tc- DTPA renography is an accurate and sensitive method for evaluation of hyperfiltration in early diabetes mellitus. A propos d’un cas. Introduction Renal ectopia is a malposition by anomaly of migration during the embryonic development.

It can be high, low or crossed. Association with an obstructive malformation is rather frequent. Observation A year-old patient with an ureteral-pelvic junction rnal on a right iliac renal ectopia revealed by intravenous urography. A right pyelo-plasty was carried out. The evolution was marked by the disappearance of pain and a remarkable improvement of the permeability of the right urinary tract on the follow-up scintigraphy.

Ecntellograma Renal ectopia is not an unfrequent urinary malformation. It is generally low, pelvic or iliac. Association with an ureteral-pelvic junction obstruction is rather centellogrwma. In this purpose, renal scintigraphy intervenes as a means of functional exploration, with low ionizing radiation and non-invasive to assess the permeability centelllograma the urinary tracts of the ectopic kidney and to appreciate the relative renal function.

This contributes to the orientation of diagnosis and the improvement of therapeutic strategy.

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Role of 99MTc- DTPA renal scintigraphy using gates protocol with extended acquisition time in evaluation of the function of pre-operative donor kidneys and post-operative remaining kidney. Radionuclide Methods have been extensively used in kidney centellogramx. This non-invasive technique provides quantitative analysis of total and individual renal function as well as assessment of urinary outflow tract. Aim centelligrama this study was to evaluate renal function of potential kidney-donors and follow up post-nephrectomy kidney-donors by 99mTc- DTPA renal scintigraphy using Gates protocol with extended acquisition.

This study included 72 living kidney donors.

In addition to routine laboratory and radiological evaluations, a 99mTc- DTPA dynamic renal scintigraphy was acquired 15 second per frame for 30 minutes. Glomerular filtration rate GFR was calculated based on Gates protocol. Urinary outflow tract was fentellograma by renogram generated and consecutive dynamic renal images of up to 30 minute. Renal scintigraphy was also performed in follow-up of 37 post-nephrectomy kidney donors.

Results 6 of 72 8. One of 6 excluded donors had one non-functional kidney. No donors have shown urinary tract obstruction. These results are not significant, indicative of functional compensation occuring after unilateral nephrectomy. Tcm DTPA dynamic renal scintigraphy using Gates protocol with extended acquisition time is a valuable simple radionuclide technique which is able to assess total and individual renal function and urinary outflow tract. This technique should be used as an integral part of the pre-operative evaluation contributing to the choice of nephrectomy side in potential kidney donors and as follow-up of post-operative remaining kidney.

A propos de 17 cas. Scintigraphy of renal transplant. Scintigraphy is useful for monitoring perfusion and function of renal transplant, rnal well as for diagnosing miscellaneous surgical. This non-invasive imaging technique, which uses no deleterious products, is an attractive alternative for patients.