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搏动血流通气下的胸部磁共振成像：一种新的有前景的技术。

Chest-MRI under pulsatile flow ventilation: A new promising technique.

作者信息

Beigelman-Aubry Catherine, Peguret Nicolas, Stuber Matthias, Delacoste Jean, Belmondo Bastien, Lovis Alban, Simons Julien, Long Olivier, Grant Kathleen, Berchier Gregoire, Rohner Chantal, Bonanno Gabriele, Coppo Simone, Schwitter Juerg, Ozsahin Mahmut, Qanadli Salah, Meuli Reto, Bourhis Jean

机构信息

Department of Radiology, CHUV and University of Lausanne, Lausanne, Switzerland.

Department of Radiation Oncology, CHUV and University of Lausanne, Lausanne, Switzerland.

出版信息

PLoS One. 2017 Jun 12;12(6):e0178807. doi: 10.1371/journal.pone.0178807. eCollection 2017.

DOI:10.1371/journal.pone.0178807
PMID:28604833
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5467845/
Abstract

OBJECTIVES

Magnetic resonance imaging (MRI) of the chest has long suffered from its sensitivity to respiratory and cardiac motion with an intrinsically low signal to noise ratio and a limited spatial resolution. The purpose of this study was to perform chest MRI under an adapted non invasive pulsatile flow ventilation system (high frequency percussive ventilation, HFPV®) allowing breath hold durations 10 to 15 times longer than other existing systems.

METHODS

One volunteer and one patient known for a thymic lesion underwent a chest MRI under ventilation percussion technique (VP-MR). Routinely used sequences were performed with and without the device during three sets of apnoea on inspiration.

RESULTS

VP-MR was well tolerated in both cases. The mean duration of the thoracic stabilization was 10.5 min (range 8.5-12) and 5.8 min (range 5-6.2) for Volunteer 1 and Patient 1, respectively. An overall increased image quality was seen under VP-MR with a better delineation of the mediastinal lesion for Patient 1. Nodules discovered in Volunteer 1 were confirmed with low dose CT.

CONCLUSION

VP-MR was feasible and increased spatial resolution of chest MRI by allowing acquisition at full inspiration during thoracic stabilization approaching prolonged apnoea. This new technique could be of benefit to numerous thoracic disorders.

摘要

目的

长期以来，胸部磁共振成像（MRI）一直受限于其对呼吸和心脏运动的敏感性，固有信噪比低且空间分辨率有限。本研究的目的是在一种适应性非侵入性搏动流通气系统（高频振荡通气，HFPV®）下进行胸部MRI检查，该系统可使屏气时间比其他现有系统长10至15倍。

方法

一名志愿者和一名已知患有胸腺病变的患者在通气冲击技术（VP-MR）下接受了胸部MRI检查。在三组吸气性呼吸暂停期间，分别在使用和不使用该设备的情况下进行常规序列检查。

结果

在这两种情况下，VP-MR的耐受性都很好。志愿者1和患者1的胸部稳定平均持续时间分别为10.5分钟（范围8.5 - 12分钟）和5.8分钟（范围5 - 6.2分钟）。在VP-MR下，整体图像质量有所提高，患者1的纵隔病变显示得更清晰。志愿者1中发现的结节经低剂量CT证实。

结论

VP-MR是可行的，通过在胸部稳定接近延长屏气时的完全吸气状态下进行采集，提高了胸部MRI的空间分辨率。这项新技术可能对多种胸部疾病有益。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5445/5467845/84e27f9d28a8/pone.0178807.g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5445/5467845/7d40fde24ef8/pone.0178807.g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5445/5467845/115587cafed9/pone.0178807.g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5445/5467845/df6b4a311350/pone.0178807.g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5445/5467845/e65c44ba262e/pone.0178807.g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5445/5467845/87ffa9868481/pone.0178807.g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5445/5467845/84e27f9d28a8/pone.0178807.g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5445/5467845/7d40fde24ef8/pone.0178807.g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5445/5467845/115587cafed9/pone.0178807.g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5445/5467845/df6b4a311350/pone.0178807.g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5445/5467845/e65c44ba262e/pone.0178807.g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5445/5467845/87ffa9868481/pone.0178807.g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5445/5467845/84e27f9d28a8/pone.0178807.g006.jpg

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