Application value of dual-source CT one-step scanning of head,neck and heart in atherosclerosis patients
10.13929/j.1672-8475.201901016
- Author:
Tao WANG
1
Author Information
1. Department of Radiology, Guizhou Provincial People's Hospital
- Publication Type:Journal Article
- Keywords:
Atherosclerosis;
Carotid artery;
Cerebral artery;
Coronary artery;
Tomography;
X-ray computed
- From:
Chinese Journal of Interventional Imaging and Therapy
2019;16(11):672-675
- CountryChina
- Language:Chinese
-
Abstract:
Objective: To investigate the application value of one-step scanning of head, neck and heart with dual-source CT in atherosclerosis (AS) patients. Methods: A total of 120 AS patients were randomly divided into group A and B (each n=60). One-step scanning was performed in group A, while conventional coronary CTA and CTA of head and neck vessels were performed in group B. Subjective and objective evaluations of image quality were carried out. The 3-point method was used for subjective scoring. Objective evaluation indicators included the mean SNR of left coronary artery trunk, right coronary artery, common carotid artery near the bifurcation, internal carotid artery C1 segment and M1 segment of the middle artery, as well as CNR relative to the paraspinal muscles. The scanning length of CTA, time of scanning, dose length product (DLP) and effective dose (ED) were recorded to evaluate the radiation dose, and then statistical analysis was done. Results: There was no significant difference of image quality scores (t=0.596, P=0.283), nor of SNR and CNR (t=0.828, 0.761, P=0.104, 0.089) between the two groups. Although no significant difference of scanning length of CTA was found (t=1.351, P=0.621), the time of scanning in group A was shorter than that in group B ([1.30±0.12]s vs [4.08±0.69]s, t=-2.831, P=0.006), and DLP ([146.03±13.05]mGy•cm vs [1 935.04±134.12]mGy•cm, t=-6.743, P<0.01) and ED ([0.88±0.32])mSv vs [9.62±1.64]mSv, t=-4.056, P<0.01) in group A were lower than those in group B. Conclusion: For AS patients, one-step scanning of head, neck and heart with dual-source CT can provide satisfactory imaging quality of coronary artery and arteries of head and neck, meanwhile significantly reduce the radiation dosage.