International journal of cardiology · 2009
Head to head comparison between the conventional balloon occlusion method and the non-occlusion method for optical coherence tomography.
Клиническое исследованиеСравнительное исследованиеСтатьяНазвание и аннотация: Перевод в очереди
Обработка статьи · этапы, ошибки и управление
Загрузка состояния…
Ошибки и ограничения
История · было → стало
Состояние обновляется каждые 5 секунд, пока блок открыт. Процент показывается только там, где известен объём работы. Пауза останавливает продолжение этапа; текущий запрос к источнику может завершиться.
Kataiwa Hideaki, Tanaka Atsushi, Kitabata Hironori, Matsumoto Hiroki, Kashiwagi Manabu, Kuroi Akio, Ikejima Hideyuki, Tsujioka Hiroto, Okochi Keishi, Tanimoto Takashi, Yamano Takashi, Takarada Shigeho, Nakamura Nobuo, Kubo Takashi, Mizukoshi Masato, Hirata Kumiko, Imanishi Toshio, Akasaka Takashi
Аннотация
BACKGROUND: Optical coherence tomography (OCT) has been introduced as a high-resolution imaging modality for the coronary arteries. The current OCT system, however, has a serious limitation in that the image acquisition method requires a soft balloon occlusion to avoid signal scattering from red blood cells.
PURPOSE: The purpose of this study was to compare OCT images from the conventional balloon occlusion method and a non-occlusion image acquisition method, the continuous-flushing method, in the clinical setting.
METHODS: OCT was performed with the conventional balloon occlusion method and the continuous-flushing method sequentially in 23 patients with stable angina. The image quality and quantitative measurements of OCT images were directly compared between the two methods.
RESULTS: There were no adverse events related to the OCT procedure in any patients. There were no changes in systolic blood pressure and heart rate during the OCT procedure. ST-segment elevation (>2 mm) was recorded in 22 of 23 (96%) patients with the balloon occlusion method, but it was only observed in 1 of 23 (4%) patients with the continuous-flushing method (p<0.01). There were no differences in the visible length (the balloon occlusion method 28.6±2.3 mm vs. the continuous-flushing method 29.2±1.6 mm, p=0.49), image quality, or quantitative measurements between the two methods.
CONCLUSIONS: OCT imaging with the continuous-flushing method could be performed safely and obtained similar quality images compared with the balloon occlusion method. OCT can be used to observe the proximal site of coronary arteries with this new technique.
PURPOSE: The purpose of this study was to compare OCT images from the conventional balloon occlusion method and a non-occlusion image acquisition method, the continuous-flushing method, in the clinical setting.
METHODS: OCT was performed with the conventional balloon occlusion method and the continuous-flushing method sequentially in 23 patients with stable angina. The image quality and quantitative measurements of OCT images were directly compared between the two methods.
RESULTS: There were no adverse events related to the OCT procedure in any patients. There were no changes in systolic blood pressure and heart rate during the OCT procedure. ST-segment elevation (>2 mm) was recorded in 22 of 23 (96%) patients with the balloon occlusion method, but it was only observed in 1 of 23 (4%) patients with the continuous-flushing method (p<0.01). There were no differences in the visible length (the balloon occlusion method 28.6±2.3 mm vs. the continuous-flushing method 29.2±1.6 mm, p=0.49), image quality, or quantitative measurements between the two methods.
CONCLUSIONS: OCT imaging with the continuous-flushing method could be performed safely and obtained similar quality images compared with the balloon occlusion method. OCT can be used to observe the proximal site of coronary arteries with this new technique.