Search: onr:"swepub:oai:gup.ub.gu.se/300139" >
Novel method to det...
Novel method to determine recursive filtration and noise reduction in fluoroscopic imaging - a comparison of four different vendors.
- Article/chapterEnglish2021
Publisher, publication year, extent ...
Numbers
-
LIBRIS-ID:oai:gup.ub.gu.se/300139
-
https://gup.ub.gu.se/publication/300139URI
-
https://doi.org/10.1002/acm2.13115DOI
Supplementary language notes
Part of subdatabase
Classification
-
Subject category:ref swepub-contenttype
-
Subject category:art swepub-publicationtype
Notes
-
This study attempted to develop a method to measure the applied recursive filtration and to determine the noise reduction of four different fluoroscopic systems. The study also attempted to elucidate the importance of considering the recursive filter for quality control tests concerning signal-to-noise ratio (SNR) or image quality. The vendor's settings for recursive filtration factor (β) are, unfortunately, often not available. Hence, a method to determine the recursive filtration and associated noise reduction would be useful.The recursive filter was determined by using a single fluoroscopic series and the method presented in this study. The theoretical noise reduction based on the choice of β was presented. In addition, the corresponding noise reduction, evaluated as the ratio of the standard deviation of the pixel value between a series with β equal to zero (recursive filtration off) and β>0, was determined for different pulse rates given by pulses per second (pps), doses (mAs) and recursive filter. The images were acquired using clinically relevant radiation quality and quantity.The presented method to measure the recursive filter exhibited high accuracy (1.08%) and precision (1.48%). The recursive filtration and noise reduction were measured for several settings for each vendor. The recursive filtration settings and associated recursive filtration factors for four different vendors were presented.This study presented an accurate method to determine applied recursive filtration, which was easy to determine. Hence, for all quality control purposes, including noise evaluation, it was possible to consider the essential noise reduction given by the settings for recursive filtration. It was also possible to compare the recursive filtration settings and associated recursive filtration within and between vendors.
Subject headings and genre
Added entries (persons, corporate bodies, meetings, titles ...)
-
Nøtthellen, Jacob
(author)
-
Nalum Naess, Stine
(author)
-
Båth, Magnus,1974Gothenburg University,Göteborgs universitet,Institutionen för kliniska vetenskaper, Avdelningen för medicinsk strålningsvetenskap,Institute of Clinical Sciences, Department of Medical Radiation Sciences(Swepub:gu)xbatma
(author)
-
Göteborgs universitetInstitutionen för kliniska vetenskaper, Avdelningen för medicinsk strålningsvetenskap
(creator_code:org_t)
Related titles
-
In:Journal of applied clinical medical physics: Wiley22:1, s. 281-2921526-9914
Internet link
Find in a library
To the university's database