Congress:
EuroSafe Imaging 2016
Keywords:
Action 7 - Medical radiation protection research: MELODI, EURAMED, Action 9 - Facilitation of research in advanced topics of radiation protection
DOI:
10.1594/esi2016/ESI-0047
Conclusion and Recommendations
Maintaining Image Quality and Reader Confidence with Adaptive Filtering
Research conducted at Johns Hopkins University aimed to test and determine the efficiency of a novel,
real-time imaging adaptive filter that can be applied during interventional radiology procedures on a porcine model.
The goal was to identify this technology as a means for improving image quality without the need to manipulate radiation dose.
The study utilized a novel real-time adaptive filter like ContextVision’s GOPView iRVultra .
A real-time electronic dosimeter was placed for entrance skin dose measurements.
Also used for calibration was an ionization chamber.
There were two different analyses done,
the first was a comparison made between processed and unprocessed images (with all other parameters kept constant).
The second comparison was then made between processed low dose images and unprocessed high dose images (with all other parameters kept constant).
Results For Unprocessed Image vs.
Processed Images
Table 1 rated on a five point scale where 1= excellent and 5 = worst.
The addition of the real-time adaptive filter in all low dose angiograms lead to significant improvements in diagnostic acceptability,
large vessel and spinal structure visualization without any negative affect on contrast and visibility of the evaluated structures,
and without the introduction of any artifacts.
These results were achieved with a concomitant dose reduction of 40-50% over the various studies conducted.
In all of the real-time studies conducted,
the algorithms used did not introduce any temporal distortion or blurring within the images.