Keywords:
Urinary Tract / Bladder, Pelvis, Oncology, MR-Diffusion/Perfusion, Image manipulation / Reconstruction, Computer Applications-Detection, diagnosis, Computer Applications-Teleradiology, Abscess delineation, Abscess, Cancer, Metastases
Authors:
Y. MATSUDA, T. Hariu, J. Kasahara, A. chishima, T. Miyazaki; Tokyo/JP
DOI:
10.26044/ecr2019/C-1265
Conclusion
cDWI images generally have a poor signal-to-noise ratio (SNR),
and much
noise appears on the images.
Therefore,
some experts say cDWI images are
not suitable for interpretation.
However,
the present study clearly showed
that CNRs significantly increased in cDWI.
This was attributed to using a
cDWI software by MedTools,
which was plugged into the Osirix
software.
This cDWI software has a function to eliminate low apparent
diffusion coefficients (ADC),
which are noise-making factors in cDWI,
and
also a window level and window width (WL/WW) auto-setting function,
resulting in suppression of noises and creating the best quality DWI
images.
(Fig.
5)In addition,
the significant increase in CNR indicated that cDWI
produces images suitable for interpretation under any conditions using any
machines.
This will minimize imaging time and burden on patients.
In this
study,
not enough cases were obtained,
and also there were some images,
which had notabledifferences between the DWI and cDWI and which had
decrease in SNR.
Therefore,
it is necessary to investigate the most optimal
conditions and b values for obtaining better quality cDWI images.