Quick magnetic resonance imaging method for lung compliance quantitative assessment

Abstract

The invention discloses a quick magnetic resonance imaging method for lung compliance quantitative assessment. The magnetic resonance imaging method comprises the steps of enabling an examinee to inhale hyperpolarization inert gas, enabling the examinee to hold breath, and obtaining airway pressure when the examinee holds the breath; performing calculation to obtain lung volumes according to hyperpolarization inert gas ventilation quick magnetic resonance images; obtaining n groups of ventilation quantities, airway pressures and lung volumes; obtaining a pressure-volume curve; and calculatingthe slope of a lung compliance fitting straight line. According to division of the lung regions, the compliance of different lung lobes of the lungs can be obtained, and the volumes of the lungs are accurately calculated. Ionization radiation and radioactivity do not exist, the scanning time is short, the sampling speed is high, and besides, the quick magnetic resonance imaging method is accurateand direct, so that the quick magnetic resonance imaging method is suitable for clinical promotion.

Description

technical field [0001] The invention relates to the technical field of magnetic resonance imaging, in particular to a fast magnetic resonance imaging method for quantitative evaluation of lung compliance. It is suitable for quantitative evaluation of lung compliance by means of hyperpolarized inert gas fast magnetic resonance. Background technique [0002] In recent decades, hyperpolarized inert gas fast MRI has been proven to be an effective technique for imaging lung cavities. Compared with other clinical imaging techniques, its extremely high sensitivity, rapid sampling and specificity make it an effective technique in the early stages of lung disease. It has unique advantages in detection. Rapid imaging of ventilation with inert gas is the most intuitive manifestation of pulmonary ventilation function. Inert gases often exhibit low or even unobservable signals in areas of deficient lung ventilation. These areas are usually due to narrowing of the small airways causing...

AI Technical Summary

Problems solved by technology

Due to X-ray attenuation and lower proton spin density in the lung than in other tissues, the lung often appears as a dark hypointense area on CT and proton MRI, making it difficult to distinguish contributions to lung volume calculations on CT and proton MRI images Fewer regions of ventilatory deficits, which prevent accurate calculation of lung volumes

At the same time, the ionizing radiation of CT limits the promotion of repeated scanning technology in clinical practice, while the traditional clinical proton MRI has a long sampling time and cannot obtain lung gas signals

Images