How to Improve the Conspicuity of Breast Tumors on Computed High b-value Diffusion-weighted Imaging.
Adult
Aged
Aged, 80 and over
Breast Neoplasms
/ diagnostic imaging
Diffusion Magnetic Resonance Imaging
Female
Humans
Image Processing, Computer-Assisted
/ methods
Middle Aged
Phantoms, Imaging
Reproducibility of Results
Retrospective Studies
Sensitivity and Specificity
Signal-To-Noise Ratio
Young Adult
breast tumor
computed diffusion-weighted image
multi-exponential diffusion-weighted image decay
Journal
Magnetic resonance in medical sciences : MRMS : an official journal of Japan Society of Magnetic Resonance in Medicine
ISSN: 1880-2206
Titre abrégé: Magn Reson Med Sci
Pays: Japan
ID NLM: 101153368
Informations de publication
Date de publication:
10 Apr 2019
10 Apr 2019
Historique:
pubmed:
18
7
2018
medline:
18
6
2019
entrez:
18
7
2018
Statut:
ppublish
Résumé
The aim of this study was to compare the tumor conspicuity on actual measured diffusion-weighted images (aDWIs) and computed DWI (cDWI) of human breast tumors and to examine, by use of a phantom, whether cDWI improves their conspicuity. We acquired DWIs (b-value 0, 700, 1400, 2100, 2800, and 3500 s/mm In the phantom study, the CNR of cDWI generated from high SNR images obtained at lower b-values and a high NEX was outperformed aDWI. However, the CR and CNR on cDWI obtained using the same scanning parameters were inferior to aDWI scans. Similarly, in the clinical study, breast tumor conspicuity was worse on high b-value cDWIs than aDWIs. To improve tumor conspicuity on cDWI, the quality of the source images must be improved. It may easily cause inferior conspicuity to aDWIs if high b-value cDWIs were generated from insufficient SNR images.
Identifiants
pubmed: 30012905
doi: 10.2463/mrms.mp.2018-0011
pmc: PMC6460120
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
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