Nephrology MCQs-9

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Most common glomerular agent used for imaging

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A. Tc-99m DMSA

B. Tc-99m DTPA

C. Tc-99m MAG3

D. Diuretic renography

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Which is most commonly useful to measure GFR

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A. Tc-99m DMSA

B. Tc-99m DTPA

C. Tc-99m MAG3

D. Diuretic renography

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In patients with poor renal function, renal imaging with which tubular secretion agents is preferred

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A. Tc-99m DMSA

B. Tc-99m DTPA

C. Tc-99m MAG3

D. Diuretic renography

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99mTc-labeled MAG3 is handled primarily by

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A. Tubular secretion

B. Tubular Retention

C. Glomerular Filtration

D. Diffusion

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Which agents provide excellent cortical imaging?

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A. Tubular secretion

B. Tubular Retention

C. Glomerular Filtration

D. Diffusion

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Which is superior to 99mTc-DTPA in patient with poor kidney function as Glomerular filtration agents to measure glomerular filtration rate

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A. Tc-99m DMSA

B. 131I-OIH

C. Tc-99m MAG3

D. Technetium 99 dimercaptosuccinate

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What are the categories of radiotracers used in kidney imaging?

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Glomerular filtration agents to measure glomerular filtration rate:

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1. Technetium 99 diethylenetriamine pentaacetic acid (99mTc-DTPA)
2. Technetium 99 mercaptoacetyl triglycine (99mTc-MAG3)
3. Iodine 131 o-iodohippurate (131I-OIH; mainly historical)
4. 99mTc-MAG3 is superior to 99mTc-DTPA in patient with poor kidney function

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Tubular secretion agents to estimate effective renal plasma flow:

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1. 99mTc-MAG3
2. 131I-OIH

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Tubular retention agents used for cortical imaging (has some utility particularly in pediatrics for pyelonephritis evaluation):

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1. Technetium 99 dimercaptosuccinate
2. Technetium 99 glucoheptonate (not often used anymore)
3. 99mTc-DTPA and 99mTc-MAG3 can both be used to evaluate transplant dysfunction

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