Abstract

Info

Title:: Application of dynamic heart phantom for quality control of cardiac computed tomography imaging

Author(s):: ZHAO Peng; LI Meng; PAN Wencai; LANG Lang; XIAO Jingjing; CHONG Yinbao; Department of Medical Engineering, Xinqiao Hospital, Army Medical University, Chongqing 400037, China

Keywords:: ; dynamic heart phantom; cardiac computed tomography; equivalent material; motion simulation; quality control

Abstract:: The current dynamic heart phantom is classified as moving gated, functional and simulation phantoms. Herein the significance of dynamic heart phantom applied for the quality evaluation and quality assurance of cardiac computed tomography (CT) imaging is briefly discussed, and its developments in the quality control of cardiac CT imaging are introduced. The analysis revealed that the existing dynamic heart phantoms have limitations in anatomical structure bionic design, tissue equivalent material and movement characteristics simulation. Therefore, the feasibilities of using equivalent material to establish a four-chamber heart phantom and simulating motions in the whole cardiac cycle based on volume-time curve are expounded. Furthermore, the possibilities of a dynamic heart phantom of "structure bionic design and motion simulation" are investigated. This study provides theoretical basis and technical support for the establishment of standards for quantitatively evaluating the cardiac CT imaging quality.