Tian Wang, Boyu Li, Qiuli Han, Li Liao, Renbin Mo, Yufeng Miao, Rulin Xu, Wei Zhang
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引用次数: 0
Abstract
Purpose: This study aims to evaluate the impact of different breath-holding techniques on the scanning length and radiation dose during coronary CT angiography (CCTA).
Materials and methods: A total of 210 patients with suspected coronary artery disease, who were scheduled for CCTA, were prospectively enrolled and randomly assigned to one of three breath-holding groups: Group A (end-inspiratory breath-hold), Group B (breath-holding during calm respiration), and Group C (end-expiratory breath-hold), with 70 patients in each group. The parameters recorded and analyzed included resting heart rate (during calm respiration), scanning heart rate (during breath-holding), scan length, heart rate variability, radiation dose metrics, and patient comfort levels.
Results: Four patients in the end-expiratory breath-hold group (Group C) were unable to maintain breath-hold during scanning, resulting in non-diagnostic images. The remaining 206 patients successfully completed the CCTA. Across all groups, the scanning heart rate was significantly lower than the resting heart rate (P < 0.05). Follow-up assessments revealed that breath-holding during calm respiration provided the highest comfort level. Both the volume scan length and radiation dose were significantly lower in Groups B and C compared to Group A (P < 0.05), with no significant differences observed between Groups B and C (P > 0.05). The image quality in Group C was significantly lower compared to Group A and Group B (P < 0.01).
Conclusion: Breath-holding during calm respiration in CCTA not only maintains the image quality, but also significantly lowers heart rate, scan length, and radiation dose, while simultaneously enhancing patient comfort and cooperation during the scan.
期刊介绍：
Japanese Journal of Radiology is a peer-reviewed journal, officially published by the Japan Radiological Society. The main purpose of the journal is to provide a forum for the publication of papers documenting recent advances and new developments in the field of radiology in medicine and biology. The scope of Japanese Journal of Radiology encompasses but is not restricted to diagnostic radiology, interventional radiology, radiation oncology, nuclear medicine, radiation physics, and radiation biology. Additionally, the journal covers technical and industrial innovations. The journal welcomes original articles, technical notes, review articles, pictorial essays and letters to the editor. The journal also provides announcements from the boards and the committees of the society. Membership in the Japan Radiological Society is not a prerequisite for submission. Contributions are welcomed from all parts of the world.
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