Method and device for magnetic resonance imaging data acquisition guided by physiologic feedback

A Magnetic Resonance Imaging (MRI) device configured to make an MRI image of a body part that undergoes at least quasi-periodic motion, the MRI device comprising:

• a sensor configured to obtain first physiologic data of the body part as the body part undergoes the at least quasi-periodic motion;
• a controller configured to compare the first physiologic data with a current position of the body part to determine at least one previous instance that the body part was in a position obtained during the at least quasi-periodic motion that corresponds to the current position of the body part;
• an MRI scanner configured to scan the body part with first MRI hardware-controllable settings contemporaneous with the sensor obtaining the first physiologic data, wherein the MRI scanner is configured to produce first MRI data based on the scan of the body part with the first MRI hardware-controllable settings,
• wherein the controller is configured to compare the first physiologic data with the current position of the body part independent of the first MRI data and is further configured to select second MRI hardware-controllable settings based on the first MRI hardware-controllable setting used during the at least one previous instance, and the MRI scanner is further configured to scan the body part with the second MRI hardware-controllable settings so as to produce second MRI data;
• and
• an image processor configured to produce the MRI image using the second MRI data.

A method of making a Magnetic Resonance Imaging (MRI) image of a heart that undergoes at least quasi-periodic motion, the method comprising:

• obtaining first physiologic data of the heart from an electrocardiogram (ECG) as the heart undergoes at least quasi-periodic motion;
• during obtaining the first physiologic data, scanning the heart using first MRI hardware-controllable settings to produce first MRI data, wherein the first MRI hardware-controllable settings correspond to radial k-space projection angles of a time domain MRI signal;
• comparing a current position of the heart based on data from the electrocardiogram (ECG) to a position of the heart obtained during the at least quasi-periodic motion to determine at least one previous instance that the position of the heart obtained during the at least quasi-periodic motion corresponds to the current position of the heart;
• selecting second MRI hardware-controllable settings based on the first MRI hardware-controllable settings used during the at least one previous instance, wherein the second MRI hardware-controllable settings correspond to at least one additional radial k-space projection angle;
• scanning the heart with the second MRI hardware-controllable settings to produce second MRI data;
• and
• producing the MRI image of the heart using the second MRI data.