| 摘要 |
The invention provides for a magnetic resonance imaging system (100) with a radio frequency system (114, 116, 120, 124, 126) for acquiring magnetic resonance data (142, 144, 156). The radio frequency system comprises a coil (124) with multiple antenna elements (126). The MRI system further comprises processor (133) for controlling the magnetic resonance imaging system. Execution of instructions (140, 170, 172, 174) cause the processor to: acquire (200) calibration magnetic resonance data (142) from a first field of view within the imaging zone using the multiple antenna elements, calculate (202, 300, 302, 304, 400) modified magnetic resonance data (144) by interpolating the calibration magnetic resonance data to a second field of view, calculate (204, 500, 502, 504, 602) a coil sensitivity kernel (146) by deconvolving the modified magnetic resonance data, and calculate (206, 604, 610) a coil sensitivity (148) by transforming each coil sensitivity matrix kernel into image space. The second field of view encompasses and is larger than the first field of view. |
