作者
Nicoletta Paruccini, Raffaele Villa, Nadia Oberhofer, Alessandro Loria, Michele Signoriello, Carlo Giordano, Raffaella Soavi, Paola Colombo, Cristina De Mattia, Federica Rottoli, Stefania Nici, Daniela Origgi, Francesca Emiro, Loredana D'Ercole, Laura Mantovani, Monica Cavallari, Mariagrazia Quattrocchi, Francesca Pietrobon, Paola Bregant, Lucia Riccardi, Anna Radice, Felicita Luraschi, Lisa Milan, Paola Nocera, Sabina Strocchi, Luisa Pierotti, Adriana Taddeucci, Giorgia Guerra, Marco Felisi, Stefano Riga, Annalisa Trianni
发表日期
2021/11/1
期刊
Physica Medica
卷号
91
页码范围
28-42
出版商
Elsevier
简介
Purpose
The assessment of low-contrast-details is a part of the quality control (QC) program in digital radiology. It generally consists of evaluating the threshold contrast (Cth) detectability details for different-sized inserts, appropriately located in dedicated QC test tools. This work aims to propose a simplified method, based on a statistical model approach for threshold contrast estimation, suitable for different modalities in digital radiology.
Methods
A home-made low-contrast phantom, made of a central aluminium insert with a step-wedge, was assembled and tested. The reliability and robustness of the method were investigated for Mammography, Digital Radiography, Fluoroscopy and Angiography. Images were analysed using our dedicated software developed on Matlab®. The Cth is expressed in the same unit (mmAl) for all studied modalities.
Results
This method allows the collection of Cth information from different …
学术搜索中的文章
N Paruccini, R Villa, N Oberhofer, A Loria… - Physica Medica, 2021