Monochromatic curve features characterization for sub-differentiation of upper urinary calcium calculi in vivo on dual-energy CT:a pilot study
10.3969/j.issn.1002-1671.2018.01.028
- VernacularTitle:双能CT能谱曲线特征对体内上尿路钙结石亚型的初步研究
- Author:
Rong WANG
1
;
Xiangjiu XU
;
Gang HUANG
;
Xing ZHOU
;
Yuan LI
;
Xiangrong WANG
;
Li ZHANG
;
Xiaozhou LONG
Author Information
1. 甘肃省人民医院放射科
- Keywords:
urinary calculi;
spectral curve;
computed tomography
- From:
Journal of Practical Radiology
2018;34(1):101-104
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the value of monochromatic curve features parameters in assessing various types of upper urinary calcium calculi in vivo on dual-energy CT(DECT).Methods Total 55 calcium calculi underwent dual-source CT in dual-energy mode were analyzed retrospectively.According to the result of infrared spectrometer,four types of calcium calculi were seen in this study:group 1(COM,12),group 2(COM+COD,9),group 3(COM+CaP,8),group 4(COM+COD+CaP,26).For each stone,mono-chromatic images from 40 keV to 190 keV(interval of 10 keV)were reconstructed.We used the different single spectral CT values and curve slope to differentiate of various types of calcium calculi.Results The parameters of the different single spectral CT values and curve slope were significantly different among the four groups.110 keV could differentiate the most groups.The curve slopes of group 1 with group 2 and group 3,group 2 with group 4,group 3 with group 4 were significantly different.Conclusion The spectral curve features parameters is helpful in the characterization of various types of calcium calculi.
