憋气法对磁共振胰胆管造影胃肠道蠕动的影响。

IF 1.7 Q3 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING Radiological Physics and Technology Pub Date : 2024-09-27 DOI:10.1007/s12194-024-00846-2
Yuhei Otsuka, Tomoya Nakamura, Nao Kajihara, Takao Tashiro
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引用次数: 0

摘要

据报道,屏气(BH)三维磁共振胰胆管成像方法可抑制 "呼吸伪影";但尚未讨论靶器官周围胃肠道蠕动的影响。相反,有报道称自主神经系统会影响胃肠道蠕动,而 BH 成像则会通过与自主神经系统的相互作用影响静脉血流信号(BFS)。我们研究了 BH 成像对胃肠蠕动的影响。七名健康志愿者参加了此次研究。我们使用了三种呼吸模式--自由呼吸(FB)、最大吸气时的 BH(Insp-BH)和最大呼气时的 BH(Exp-BH)。胃肠道蠕动通过电影核磁共振成像进行测量。采用归一化帧间差值法分析电影磁共振成像数据,重点是十二指肠和胃体。使用二维相位对比法评估 BH 方法导致的血液动力学变化,目标是下腔静脉(IVC)。对每种呼吸模式的所有阶段都进行了 BFS 检查。十二指肠的蠕动变化在 FB、Exp-BH 和 Insp-BH 之间无明显差异。在胃体中,FB 和 Exp-BH 之间以及 Exp-BH 和 Insp-BH 之间均无明显差异。但是,FB 和 Insp-BH 之间存在明显差异。关于 BFS,在 IVC 中,Exp-BH 与 Insp-BH 之间以及 FB 与 Insp-BH 之间均存在显著差异(均为 p
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The effect on gastrointestinal peristalsis for magnetic resonance cholangiopancreatography during breath-holding methods.

The breath-hold (BH) 3D magnetic resonance cholangiopancreatography method has been reported to suppress "respiratory artifacts"; however, the influence of gastrointestinal peristalsis around the target organs has not been discussed. In contrast, the autonomic nervous system has been reported to affect gastrointestinal peristalsis and BH imaging has been reported to influence venous blood flow signal (BFS) through its involvement with the autonomic nervous system. We examined the impact of BH imaging on gastrointestinal peristalsis. Seven healthy volunteers participated. Three respiratory patterns-free breathing (FB), BH at maximum inspiration (Insp-BH), and BH at maximum expiration (Exp-BH)-were used. Gastrointestinal peristalsis was measured using cine MRI. Cine MRI data were analyzed using the normalized interframe difference method, focusing on the duodenum and gastric body. Hemodynamic changes resulting from BH methods were evaluated using 2D phase contrast, targeting the inferior vena cava (IVC). The BFS was examined for all phases of each respiratory pattern. Peristalsis variation in the duodenum showed no significant differences among FB, Exp-BH, and Insp-BH. In the gastric body, no significant differences were observed between FB and Exp-BH or between Exp-BH and Insp-BH. However, a significant difference emerged between FB and Insp-BH. Regarding BFS, in the IVC, significant differences were observed between Exp-BH and Insp-BH and between FB and Insp-BH (both, p < 0.01), with no significant difference between FB and Exp-BH. Insp-BH reduces venous blood flow and suppresses the influence of peristalsis variation.

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来源期刊
Radiological Physics and Technology
Radiological Physics and Technology RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING-
CiteScore
3.00
自引率
12.50%
发文量
40
期刊介绍: The purpose of the journal Radiological Physics and Technology is to provide a forum for sharing new knowledge related to research and development in radiological science and technology, including medical physics and radiological technology in diagnostic radiology, nuclear medicine, and radiation therapy among many other radiological disciplines, as well as to contribute to progress and improvement in medical practice and patient health care.
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