Mickaël Lair1, Mariette Renaux-Petel2, Adnan Hassani1, Yohann Cruypeninck1, Ioana Vasies1, Agnès Liard2, Jean-Nicolas Dacher1, Pierre-Hugues Vivier3,4. 1. CHU C. Nicolle, Service de radiopédiatrie, Rouen University Hospital, Cedex, Rouen, France. 2. CHU C. Nicolle, Service de chirurgie pédiatrique, Rouen University Hospital, Cedex, Rouen, France. 3. CHU C. Nicolle, Service de radiopédiatrie, Rouen University Hospital, Cedex, Rouen, France. pierrehuguesvivier@yahoo.fr. 4. Ramsay - Générale de Santé, Hôpital Privé de l'Estuaire, Radiology, Le Havre, France. pierrehuguesvivier@yahoo.fr.
Abstract
BACKGROUND: 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. OBJECTIVE: 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. RESULTS: 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). CONCLUSION: Diffusion tensor imaging could replace diffusion-weighted imaging for diagnosis of acute pyelonephritis.
BACKGROUND: 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. OBJECTIVE: 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. RESULTS: 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). CONCLUSION: Diffusion tensor imaging could replace diffusion-weighted imaging for diagnosis of acute pyelonephritis.
Authors: M Majd; A R Nussbaum Blask; B M Markle; E Shalaby-Rana; H G Pohl; J S Park; R Chandra; K Rais-Bahrami; N Pandya; K M Patel; H G Rushton Journal: Radiology Date: 2001-01 Impact factor: 11.105
Authors: Michael Riccabona; Fred E Avni; Johan G Blickman; Jean-Nicolas Dacher; Kassa Darge; M Luisa Lobo; Ulrich Willi Journal: Pediatr Radiol Date: 2007-12-11
Authors: M Beatrice Damasio; Lil-Sofie Ording Müller; Thomas A Augdal; Fred E Avni; Luca Basso; Costanza Bruno; Damjana Ključevšek; Annemieke S Littooij; Stéphanie Franchi-Abella; Luisa M Lobo; Hans-Joachim Mentzel; Marcello Napolitano; Aikaterini Ntoulia; Michael Riccabona; Samuel Stafrace; M Magdalena M Woźniak; Philippe Petit Journal: Pediatr Radiol Date: 2019-11-27