作者
Franka Risch, Josua A Decker, Daniel Popp, Andrea Sinzinger, Franziska Braun, Stefanie Bette, Bertram Jehs, Mark Haerting, Claudia Wollny, Christian Scheurig-Muenkler, Thomas J Kroencke, Florian Schwarz
发表日期
2023/9/1
期刊
Investigative Radiology
卷号
58
期号
9
页码范围
691-696
出版商
LWW
简介
Objective
The aim of this study was to compare the effectiveness of common strategies for artifact reduction of dental material in photon-counting detector computed tomography data sets.
Materials and Methods
Patients with dental material who underwent clinically indicated CT of the neck were enrolled. Image series were reconstructed using a standard and sharp kernel, with and without iterative metal artifact reduction (IMAR)(Qr40, Qr40 IMAR, Qr60, Qr60 IMAR) at different virtual monoenergetic imaging (VMI) levels (40–190 keV). On representative slice positions with and without dental artifacts, mean and standard deviation of CT values were measured in all series at identical locations. The mean absolute error of CT values (∆ HU) and the artifact index (AIX) were calculated and analyzed focusing on 3 main comparisons:(a) different VMI levels versus 70 keV,(b) standard versus sharp kernel, and (c) nonuse or …
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F Risch, JA Decker, D Popp, A Sinzinger, F Braun… - Investigative Radiology, 2023