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Utility of non‐enhanced magnetic resonance imaging to detect acute pyelonephritis
Author(s) -
Aoyagi Jun,
Odaka Jun,
Kuroiwa Yuri,
Nakashima Naomi,
Ito Takane,
Saito Takashi,
Kanai Takahiro,
Yamagata Takanori,
Momoi Mariko Y
Publication year - 2014
Publication title -
pediatrics international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.49
H-Index - 63
eISSN - 1442-200X
pISSN - 1328-8067
DOI - 10.1111/ped.12312
Subject(s) - medicine , nephrogenic systemic fibrosis , magnetic resonance imaging , dimercaptosuccinic acid , radiology , gadolinium , scintigraphy , diffusion mri , nuclear medicine , effective diffusion coefficient , single photon emission computed tomography , kidney , materials science , metallurgy
It has been established that enhanced computed tomography ( CT ) and 99m Tc ‐dimercaptosuccinic acid renal scintigraphy ( 99m Tc ‐ DMSA scintigraphy) used in conjunction with single‐photon emission CT is a useful tool for the diagnosis of acute pyelonephritis ( APN ). The utility of non‐enhanced magnetic resonance imaging ( MRI ), however, has not been investigated extensively for the diagnosis of APN or renal abscess in children. We describe the case of a 23‐month‐old boy with suspected APN who received non‐enhanced MRI . Whole body diffusion‐weighted imaging ( DWI ) was used, and a background body‐signal suppression sequence was applied. High‐intensity focal lesions were identified on DWI and low‐intensity lesions on the apparent diffusion coefficient map in the acute phase. This case suggested that non‐enhanced MRI could be a useful tool for the diagnosis of APN in children, because it can avoid the risks of not only radiation exposure but also nephrogenic systemic fibrosis associated with gadolinium‐based contrast agents, especially in infants.