Diffusion tensor imaging in acute pyelonephritis in children

作者：Lair Mickael; Renaux Petel Mariette; Hassani Adnan; Cruypeninck Yohann; Vasies Ioana; Liard Agnes; Dacher Jean Nicolas; Vivier Pierre Hugues^*

来源：Pediatric Radiology, 2018, 48(8): 1081-1085.

DOI：10.1007/s00247-018-4146-4

• Children
• Diffusion tensor imaging
• Diffusion-weighted imaging
• Kidney
• Magnetic resonance imaging
• Pyelonephritis
• Urinary tract infection

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.
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.

• 出版日期2018-8