English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Purpose: To evaluate the influence of ADMIRE algorithm on image texture andimage visual impression as a supplement to measurements of common image qualityparameters such as noise levels and spatial resolution. Methods: An ACR phantomwas examined at different radiation dose levels. To characterize the imagetexture, two Haralick texture parameters, contrast and entropy, for differentdose level and reconstruction algorithms were assessed. The visual impressionof images and their structural differences were evaluated using the structuralsimilarity index (SSIM). Noise was determined for all dose and AMIRE levels andcompared to those by filtered back projection (FBP). The spatial resolution wasdetermined by the modulation transfer functions and the line spread function.Results: The Haralick texture parameters decreased with increasing ADMIRElevels I up to V. ADMIRE III, IV and V offered a comparable contrast andentropy to those calculated by FBP with a radiation dose reduction up to 50%.SSIM improved with increasing ADMIRE levels. SSIM calculated by ADMIRE IV and Vshowed similar values by the filter back projection with a dose decrease up to50%. Spatial resolution was retained up to 90% dose reduction. With increasingADMIRE as well as dose level the noise distribution shifted to a more narrowdistribution, which was in accordance with the reconstructed images usingADMIRE. Conclusion: Texture analysis and SSIM allow a more realistic assessmentof the dose reduction potential of iterative reconstruction algorithms thanquality metrics only based on physical measurements of noise distribution orspatial resolution. This work presented that by means of the ADMIRE algorithm,a comparable image quality at reduced radiation doses can be reached.

Effect of an advanced model-based iterative reconstruction algorithm on texture and visual impression of images privieded by a dual source CT scanner