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Intrarenal Injection of Escherichia coli in a Rat Model of Pyelonephritis
Published on: July 18, 2017
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Low monoenergetic DECT detection of pyelonephritis extent
Daud Marron1, Goldberg S Nahum1, Dar Gili1
1Department of Radiology, Hadassah Medical Center, Hebrew University of Jerusalem, The Faculty of Medicine, Jerusalem 91120, Israel.
European Journal of Radiology
|August 2, 2021
Summary
Low monoenergetic dual-energy CT (DECT) images significantly improve the detection of inflamed kidney foci in acute pyelonephritis compared to conventional imaging. Radiologists preferred these enhanced images, showing increased diagnostic accuracy.
Area of Science:
- Radiology
- Medical Imaging
- Nephrology
Background:
- Acute pyelonephritis is a common kidney infection requiring accurate diagnosis.
- Conventional imaging may have limitations in detecting subtle inflamed kidney foci.
Purpose of the Study:
- To evaluate if contrast-enhanced dual-energy CT (DECT) low monoenergetic images improve the conspicuity of inflamed kidney foci in acute pyelonephritis compared to conventional images.
Main Methods:
- Retrospective analysis of 45 patients with suspected acute pyelonephritis undergoing contrast-enhanced DECT.
- Radiologists compared conventional and monoenergetic images for inflamed foci detection and count.
- Signal-to-noise (SNR) and contrast-to-noise (CNR) ratios were analyzed.
Main Results:
- Low monoenergetic images revealed a significantly greater number of inflamed kidney foci per patient (6.4 vs. 4.2).
- In 16% of kidneys, foci were identifiable exclusively on monoenergetic images.
- SNR and CNR were substantially increased (2-fold and 1.5-fold, respectively) on monoenergetic images.
Conclusions:
- Low monoenergetic DECT images enhance the detection of inflamed kidney parenchyma in acute pyelonephritis.
- These images allow identification of previously unseen pathologic foci, aiding diagnosis.
- The findings support the use of monoenergetic DECT images for evaluating acute pyelonephritis.
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