Contrast enhancement boost improves the image quality of CT angiography derived from 80-kVp cerebral CT perfusion data.

IF 2.9 3区医学 Q2 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING

BMC Medical Imaging Pub Date : 2024-07-30 DOI:10.1186/s12880-024-01373-7

Lin Yang, Haiwei Zhang, Jiexin Sheng, Meng Wang, Yaliang Liu, Min Xu, Xiao Yang, Bo Wang, Xiaolong He, Lei Gao, Chao Zheng

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引用次数: 0

Abstract

Rationale and objective: To investigate the impact of the contrast enhancement boost (CE-boost) technique on the image quality of CT angiography (CTA) derived from 80-kVp cerebral CT perfusion (CTP) data, and to compare it with conventional CTA_peak as well as other currently employed methods for enhancing CTA images, such as CTA_tMIP and CTA_tAve extracted from CTP.

Materials and methods: The data of forty-seven patients who underwent CTP at 80 kVp were retrospectively collected. Four sets of images: CTA_peak, CTA_tMIP, CTA_tAve, and CE-boost images. The CTA_peak image represents the arterial phase at its peak value, captured as a single time point. CTA_tMIP and CTA_tAve are 4D CTA images that provide maximum density projection and average images from the three most prominent time points. CE-boost is a postprocessing technique used to enhance contrast in the arterial phase at its peak value. We compared the average CT value, standard deviation (SD), signal-to-noise ratio (SNR), and contrast-to-noise ratio (CNR) of the internal carotid artery (ICA) and basilar artery (BA) among the four groups. Image quality was evaluated using a 5-point scale.

Results: The CE-boost demonstrated and CNR in the ICA and BA (all p < 0.001). Compared with the other three CTA reconstructed images, the CE-boost images had the best subjective image quality, with the highest scores of 4.77 ± 0.43 and 4.87 ± 0.34 for each reader (all p < 0.001).

Conclusion: Compared with other currently used techniques,CE-boost enhances the image quality of CTA derived from 80-kVp CTP data, leading to improved visualization of intracranial arteries.

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对比增强增强技术提高了从 80 kVp 脑 CT 灌注数据中提取的 CT 血管造影的图像质量。

原理和目的研究对比增强增强（CE-boost）技术对从 80 kVp 脑 CT 灌注（CTP）数据中提取的 CT 血管造影（CTA）图像质量的影响，并将其与传统的 CTApeak 以及目前使用的其他增强 CTA 图像的方法（如从 CTP 中提取的 CTAtMIP 和 CTAtAve）进行比较：回顾性收集了 47 名在 80 kVp 下接受 CTP 的患者的数据。四组图像：CTApeak、CTAtMIP、CTAtAve 和 CE-boost 图像。CTApeak 图像代表动脉相位的峰值，作为单个时间点采集。CTAtMIP 和 CTAtAve 是 4D CTA 图像，提供最大密度投影和三个最突出时间点的平均图像。CE-boost 是一种后处理技术，用于增强动脉相峰值的对比度。我们比较了四组患者颈内动脉（ICA）和基底动脉（BA）的平均 CT 值、标准差（SD）、信噪比（SNR）和对比度与噪声比（CNR）。图像质量采用 5 分制进行评估：结果：CE-boost 在颈内动脉和基底动脉中显示出更高的 CNR（均为 p 结论：CE-boost 在颈内动脉和基底动脉中显示出更高的 CNR：与目前使用的其他技术相比，CE-boost 提高了由 80-kVp CTP 数据生成的 CTA 图像质量，从而改善了颅内动脉的可视化。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

BMC Medical Imaging RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING-

CiteScore

4.60

自引率

3.70%

发文量

198

审稿时长

27 weeks

期刊介绍： BMC Medical Imaging is an open access journal publishing original peer-reviewed research articles in the development, evaluation, and use of imaging techniques and image processing tools to diagnose and manage disease.