Qualitative and quantitative image analysis of 16 cm wide-coverage computed tomography compared to new-generation dual-source CT

Article type: Research Article

Authors: Jin, Liang^{a; 1} | Gao, Yiyi^{a; 1} | Shan, Yuqing^{b; 1} | Sun, Yingli^a | Li, Ming^{a; c; *} | Wang, Zhizhong^{d; *}

Affiliations: [a] Department of Radiology, Huadong Hospital (Affiliated to Fudan University), Shanghai, China | [b] Department of Radiology, Rizhao People’s Hospital, Rizhao, China | [c] Institute of Functional and Molecular Medical Imaging, Fudan University, Shanghai, China | [d] Department of Radiology, Caoxian People’s Hospital, Fumin Avenue, Caoxian Development Zone, Heze, China

Correspondence: [*] Corresponding authors: Ming Li, Department of Radiology, Huadong Hospital (Affiliated to Fudan University), No. 221 West Yan’an Road, Jing’an District, Shanghai, China. Tel: +86 1381 6620371; E-mail: [email protected] and Zhizhong Wang, Department of Radiology, Caoxian People’s Hospital, Fumin Avenue, Caoxian Development Zone, Heze, China. Tel.: +86 0530 3490866; E-mail: [email protected].

Note: [1] These authors contributed equally to this work.

Abstract: BACKGROUND:Diagnostic quality of computed tomography (CT) images depends on numerous factors. Recently, two different modalities were introduced for coronary CT angiography (CCTA). OBJECTIVE:This study aims to compare the performance of 16 cm wide-coverage detector CT (WDCT) using the snapshot freeze technique with a new-generation dual-source CT (DSCT) with 66 ms temporal resolution for CCTA. METHODS:Total 101 patients with suspected coronary heart disease were enrolled. Of these, 50 and 51 patients were examined on WDCT and DSCT, respectively. CT values, image noise, signal-to-noise ratio, and contrast-to-noise ratio were measured. The image processing efficiency was recorded, followed by statistical comparison of diagnostic accuracy and radiation dose. RESULTS:Ninety-nine patients (98.02%) had satisfactory diagnostic image quality. DSCT was significantly better than WDCT in terms of quantitative image quality, image processing efficiency, and qualitative analysis (P < 0.05). However, radiation dose was significantly lower on WDCT (P < 0.05) as compared to DSCT. CONCLUSIONS:Image processing efficiency and image quality of CCTA was higher on DSCT compared to WDCT due to the limitation of maximal tube current of WDCT.

Keywords: Coronary CT angiography, wide-coverage, new-generation, radiation dose, image quality

DOI: 10.3233/XST-190624

Journal: Journal of X-Ray Science and Technology, vol. 28, no. 3, pp. 527-539, 2020