Abstract #2249
Diffusion weighted imaging of the kidneys in freely breathing infants using multidirectional scanning
Yvonne Simrn 1 , Eira Stokland 1 , Sverker Hansson 2 , P-A Svensson 1 , and Kerstin Lagerstrand 3
1
Department of Pediatric Radiology,
Sahlgrenska University Hospital, Gothenburg, Sweden,
2
Department
of Pediatrics, Sahlgrenska University Hospital,
Gothenburg, Sweden,
3
MR centre, Sahlgrenska
University Hospital, Gothenburg, Sweden
Problem Free breathing renal diffusion weighted MR
imaging (DWI) is sensitiv to motion artefacts. Methods
Thirteen infants were scanned during free breathing
without sedation. Signal to noise ratio (SNR) was
compared between conventional DWI, tetrahedral DWI and
diffusion tensor imaging (DTI). Results The decrease in
SNR was significantly lower for DTI (0.360.11) than for
cDWI (0.52 0.08; p<0.05) and tDWI (0.540.1; p<0.05)
indicating higher image quality. There was no
significant difference in SNR for tDWI compared to cDWI
(p=0.08). Conclusion The image quality in DTI appears to
be superior to conventional and tetrahedral DWI in free
breathing renal imaging.
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