Compensation of the full magnetic tensor gradient signal

Center of Mass Estimation of Simple Shaped Magnetic Bodies Using Eigenvectors of Computed Magnetic Gradient Tensor

Computed Magnetic Gradient Tensor (CMGT) includes the first derivatives of three components of magnetic field of a body. At the eigenvector analysis of Gravity Gradient Tensors (GGT) for a line of poles and point pole, the eigenvectors of the largest eigenvalues (first eigenvectors) point precisely toward the Center of Mass (COM) of a body. However, due to the nature of the magnetic field, it i...

Ultra-low field magnetic resonance imaging detection with gradient tensor compensation in urban unshielded environment

Artificial Vector Calibration Method for Differencing Magnetic Gradient Tensor Systems

The measurement error of the differencing (i.e., using two homogenous field sensors at a known baseline distance) magnetic gradient tensor system includes the biases, scale factors, nonorthogonality of the single magnetic sensor, and the misalignment error between the sensor arrays, all of which can severely affect the measurement accuracy. In this paper, we propose a low-cost artificial vector...

The Fallacy of Full Compensation

Full tensor registration of diffusion tensor magnetic resonance imaging for assessment of cardiac pathologies

Background Cardiac fiber architecture can be characterized through DTI, resulting in a better understanding of the electrical and mechanical behavior of the heart. Structural remodeling of the myocardium may also be observed. Most cardiac DTI studies are performed ex-vivo and only recently have in-vivo measurements become possible. However, in-vivo imaging remains challenging due to signal atte...