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Gallium-68 EDTA PET/CT for Renal Imaging
Michael S Hofman1, Rodney J Hicks1
1Centre for Molecular Imaging, Cancer Imaging, Peter MacCallum Cancer Centre, Melbourne, Australia; University of Melbourne, Melbourne, Australia.
Seminars in Nuclear Medicine
|August 25, 2016
Summary
Gallium-68 (68Ga) ethylenediaminetetraacetic acid (EDTA) PET/CT offers advanced 3D renal imaging for complex cases. This technique provides superior functional and anatomical data for diagnosing renal disorders, serving as a valuable alternative to traditional methods.
Area of Science:
- Nuclear medicine
- Renal imaging
- Radiochemistry
Background:
- Nuclear medicine renal imaging is crucial for diagnosing and managing renal disorders.
- Radiolabeled chelates like EDTA and DTPA assess glomerular filtration rate (GFR).
- (68Ga)EDTA PET imaging, though older, is reemerging due to PET advancements and (68Ga) availability.
Purpose of the Study:
- To highlight the resurgence and utility of (68Ga)EDTA PET/CT in renal imaging.
- To present (68Ga)EDTA PET/CT as a substitute for (99m)Tc DTPA.
- To evaluate (68Ga)EDTA PET/CT for GFR and split renal function assessment.
Main Methods:
- Utilized (68Ga)EDTA PET/CT for dynamic 3D imaging in complex renal cases.
- Employed (68Ga)EDTA PET/CT as an alternative to (99m)Tc DTPA.
- Assessed the role of (68Ga)EDTA PET/CT in measuring GFR and split renal function.
Main Results:
- (68Ga)EDTA PET/CT provides superior 3D dynamic imaging, aiding interpretation in complex renal anatomy.
- Offers accurate, absolute quantification and improved spatial/temporal resolution compared to planar scintigraphy.
- (68Ga) generator allows cost-effective, on-demand production with no increased radiation dose.
Conclusions:
- (68Ga)EDTA PET/CT is a powerful tool for challenging renal imaging questions, especially when conventional methods fail.
- It serves as a viable alternative to (99m)Tc DTPA, particularly during supply issues.
- Demonstrates potential for accurate GFR and split renal function measurements.
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