renogram


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Related to renogram: DTPA renogram

renogram

 [re´no-gram]
a graphic record of kidney function produced by externally monitoring the level of radioactivity in the bladder as a radiopharmaceutical agent enters it from the kidney via the ureters.

re·no·gram

(rē'nō-gram),
The assessment of renal function by external radiation detectors after the administration of a radiopharmaceutical agent that is filtered and excreted by the kidney.
[reno- + G. gramma, something written]

renogram

(rē′nə-grăm′)
n.
1. A graphic record of the passage of radiation through the renal system after injection of a radioactive tracer.
2. A radiograph of a kidney.

re′nog′ra·phy (rē-nŏg′rə-fē) n.

renal scan

A study in which a radioisotope (e.g., 99mTc-labeled mercaptoacetyl triglycine) is administered to evaluate renal blood flow and renal transplant risks.

re·no·gram

(rē'nō-gram)
The assessment of renal function by external radiation detectors after the administration of a radiopharmaceutical that is filtered and excreted by the kidney.
[reno- + G. gramma, something written]
References in periodicals archive ?
While most experts suggest that pyeloplasty be considered in patients showing obstructed drainage and differential function below 40%, others propose surgery at differential function below 35%, or an obstructed renogram with prolonged [t.sub.1/2] > 20 min.
The authors also reported that [.sup.99m]Tc-DTPA can be used for the evaluation of relative renal function in subjects who need renogram curve and GFR calculations, whereas [.sup.99m]Tc-DTPA can be an alternative for the calculation of relative renal function.
The diuretic renogram should include a report of the DRF, which can vary between 45-55%, the cortical transit time which is normal up to 5 minutes, the half-time and the shape of the curve (31).
Table-II: Pre and postoperative findings on US, diuretic renogram and renal cortical spect.
Scintigraphy, using either diethylenetriamine pentaacetic acid labeled with technetium 99m (DTPA) or mercaptoacetyltriglycine marked with technetium 99m (MAG3) (diuretic renogram), is used when obstruction is the suspected cause of a dilated renal pelvis; in addition, this technique calculates the differential renal function (11, 16).
The objective of the present study is to create a ureteral obstruction experimental model that can be proved through renogram with technetium-99m diethylenetriaminepentaacetic acid ([sup.99m]Tc-DTPA) and histopathological studies, without causing total renal function loss.
It is tempting to interpret the drainage as shown on renogram curves, but this is not reproducible.
Subsequently a dimercaptosuccinic acid (DMSA) renogram showed Less than 1% function from the right kidney.
Renogram scintigraphy (Tc-99m MAG-3 dose 268 MBq) showed a baseline right kidney with good perfusion, uptake, and delayed excretion, as well as a relative function of 50%.
A lasix renogram was then performed, which verified that the ureterovesical junction was obstructed.
Measurement of the ratio of glomerular filtration rate to plasma volume from the tech-netium-99m diethylene triamine pentaacetic acid renogram: comparison with glomerular filtration rate in relation to extracellular fluid volume.