Diffusion tensor imaging in acute pyelonephritis in children
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Diffusion-weighted imaging plays a key role in the imaging of acute pyelonephritis by MRI. However the use of respiratory triggering is challenging and time-consuming in children. Diffusion tensor imaging without respiratory triggering might provide satisfying images of the moving kidneys.
To compare mean diffusivity diffusion tensor images obtained with free breathing with diffusion-weighted images obtained with respiratory triggering.
Materials and methods
Thirty-one children with suspected acute pyelonephritis underwent axial diffusion tensor imaging acquisition with free breathing and axial and coronal diffusion-weighted imaging acquisitions with respiratory triggering. We compared image quality and detection of nephritis between the two sequences.
Diffusion tensor imaging demonstrated agreement with diffusion-weighted imaging in all cases, with no difference in the detection of nephritis areas. The image quality was significantly better with diffusion tensor imaging (P<0.01).
Diffusion tensor imaging could replace diffusion-weighted imaging for diagnosis of acute pyelonephritis.
KeywordsChildren Diffusion tensor imaging Diffusion-weighted imaging Kidney Magnetic resonance imaging Pyelonephritis Urinary tract infection
We are grateful to Nikki Sabourin-Gibbs, Rouen University Hospital, for her help with editing the manuscript.
Compliance with ethical standards
Conflicts of interest
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