99mTc-MAG3 renography: normal values for MAG3 clearance and curve parameters, excretory parameters, and residual urine volume.

99mTc-MAG3 renography: normal values for MAG3 clearance and curve parameters, excretory parameters, and residual urine volume. Research Abstract Details 

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99mTc-MAG3 renography: normal values for MAG3 clearance and curve parameters, excretory parameters, and residual urine volume. Abstract Text:

Fabio P Esteves,Andrew Taylor,Amita Manatunga,Russell D Folks,Meghna Krishnan,Ernest V Garcia,Fabio P Esteves,Andrew Taylor,Amita Manatunga,Russell D Folks,Meghna Krishnan,Ernest V Garcia,

OBJECTIVE: Specific quantitative measurements have been recommended to assist in the interpretation of technetium-99m mercaptoacetyltriglycine (MAG3) renal studies. Our objective was to define the sex- and age-specific normal ranges for these recommended parameters. MATERIALS AND METHODS: Data were obtained from a retrospective analysis of 106 subjects who were evaluated for kidney donation. The MAG3 clearance was calculated using a common camera-based method. The relative uptake, prevoid/postvoid and postvoid/maximum count ratios were determined using whole-kidney regions of interest (ROIs). Time to peak, time to half-peak, 20 min/maximum and 20 min/2-3 min count ratios were determined for cortical and whole-kidney ROIs. Residual urine volume was calculated on the basis of the pre- and postvoid bladder counts and voided urine volume. RESULTS: The mean camera-based MAG3 clearance was 321 +/- 69 mL/min/1.73 m2, essentially the same as the mean plasma sample MAG3 clearance in comparable populations. The percentages of relative uptake in the right and left kidneys were 49% and 51% +/- 4%, respectively; no difference was seen between men and women. Cortical values were lower than the whole-kidney values (p < 0.001); the mean cortical 20 min/maximum count ratio was 0.19 (SD, 0.07 and 0.04 for right and left kidneys, respectively). The mean postvoid/maximum whole-kidney count ratio was < 0.1, and the mean postvoid residual bladder volume was < 30 mL. CONCLUSION: Normal limits adjusted for age and sex have been established. Applying normal ranges to quantitative MAG3 parameters may assist in the interpretation of MAG3 scintigraphy and facilitate appropriate patient management.

99mTc-MAG3 renography: normal values for MAG3 clearance and curve parameters, excretory parameters, and residual urine volume. Publishing Authors By Initials

FP Esteves,A Taylor,A Manatunga,RD Folks,M Krishnan,EV Garcia,FP Esteves,A Taylor,A Manatunga,RD Folks,M Krishnan,EV Garcia,

For similar reproductive and urinary physiology: urinary tract physiology: urodynamics research abstracts see: reproductive and urinary physiology: urinary tract physiology: urodynamics research

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99mTc-MAG3 renography: normal values for MAG3 clearance and curve parameters, excretory parameters, and residual urine volume. Journal Published:

PUBLICATION TYPE: Research Support, N.I.H., Extr

Journal: AJR. American journal of roentgenology

VOLUME: 187

Page Numbers: W610-7

Journal Abbreviation:

ISSN: 1546-3141

DAY: 3

MONTH: Dec

YEAR: 2006

99mTc-MAG3 renography: normal values for MAG3 clearance and curve parameters, excretory parameters, and residual urine volume. Information

Number of References:

LANGUAGE: eng

NlmUniqueID: 7708173

99mTc-MAG3 renography: normal values for MAG3 clearance and curve parameters, excretory parameters, and residual urine volume. Keywords Mesh Terms:

KEYWORDS: Urodynamics

MESH TERMS: pharmacokinetics

Chemical & Substance for Abstract: 99mTc-MAG3 renography: normal values for MAG3 clearance and curve parameters, excretory parameters, and residual urine volume. Information

Substance Name: Technetium Tc 99m Mertiatide

Registry Number: 125224-05-7

Grant and Affiliation Information for 99mTc-MAG3 renography: normal values for MAG3 clearance and curve parameters, excretory parameters, and residual urine volume.

AFFILIATION: Department of Radiology, Division of Nuclear Medicine, Emory University Hospital, 1364 Clifton Rd. NE, Atlanta, GA 30322, USA.

Country: United States

AGENCY: United States PHS

GRANT: R01 LMN07595

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MEDLINETA: AJR Am J Roentgenol

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