A quality assurance testing method for CT gemstone spectral imaging based on a phantom prototype

VernacularTitle:一种基于原型体模的宝石能谱CT成像的质量保证检测方法
Author: Kecheng YANG ; Exiao YU
Publication Type:Journal Article
Keywords: computed tomography; gemstone spectral imaging; Iodine; phantom; quality assurance testing
From: Journal of Practical Radiology 2015;(1):128-130
CountryChina
Language:Chinese
Abstract: Objective To explore a quality assurance testing method for gemstone spectral imaging (GSI)computed tomography. Methods A phantom prototype made of 9 bottles of pure water mixed with Iopamidol (300 mg I/mL)at different Iodine concentra-tions was scanned using the GSI mode under a routine head protocol on a GE Discovery CT750 HD scanner.Then the images were post-processed on a GE AW4.6 workstation.Results Based on the effective atomic number histogram,water & Iodine scatterplot and spectral HU curve,the Iodine solution concentrations of the phantom were not only differentiated but quantified.Conclusion It is feasible to test the material decomposition capability of GSI with the phantom prototype.