Evaluation of iodixanol combined with low voltage in CT imaging quality of solitary pulmonary nodules
10.3969/j.issn.1006-5725.2017.24.030
- VernacularTitle:碘克沙醇联合低电压CT扫描孤立性肺结节成像质量的评价
- Author:
Xili LI
1
;
Haiyan WANG
;
Zhaoxiang YE
;
Weimin ZUO
;
Cheng WEI
;
Ling OU
;
Yiqing TAN
Author Information
1. 430060,武汉市第三医院放射科
- Keywords:
radiation dose;
contrast medium;
pulmonary nodule;
tomography;
X-ray computed
- From:
The Journal of Practical Medicine
2017;33(24):4141-4144
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the feasibility of low concentration contrast medium and low-voltage combined with adaptive statistical iterative reconstruction(ASRI)technique in enhanced CT imaging of solitary pulmonary nodules. Methods A total of 40 patients with solitary pulmonary nodules who underwent routine exam-inations and were pathologically confirmed from February 2015 to February 2017 were collected and divided into conventional group(conventional dose,high osmolar contrast,using filtered back projection reconstruction)and low dose group(low voltage,low concentration isotonic contrast,iterative reconstruction). Results Subjective scoring of conventional group(3.97 ± 0.57)and low dose group(4.01 ± 0.54)indicated no statistical significance (P > 0.05). No significant difference was found regarding to reconstructed image quality,SNR and CNR in both two groups.The dose length product(DLP)and effective dose(ED)in low dose group were lower than those in the conventional group[(283.52 ± 11.50)mGy/cm vs(370.74 ± 29.56)mGy/cm;(3.65 ± 0.32)mSV vs(5.11±0.25) mSV],and the difference was statistically significant(P < 0.05). Conclusions Low concentration isotonic con-trast agent(iodixanol 270 mgI/L)and low voltage(100 kV)combined with ASIR technology could satisfy the clini-cal need in enhanced CT imaging of solitary pulmonary nodule.
