Karhunen-Loeve transform for analysis of cardiac function in myocardial gated SPECT

Proper orthogonal decomposition analysis of spatio-temporal behavior of renal scintigraphies

“…The POD is a powerful technique to extract orthonormal basis functions representing ensemble averaged structures from real spatio-temporal fields. In latter years POD has been applied in medical imaging in tomography reconstructions [6], to identify the components of myocardial contraction in gated SPECT (gSPECT) data [7], as noise-reduction method for helical computed tomography (HCT) [8] and to model the heart motion [9].…”

Use of a 4-D cardiac phantom to quantify Karhunen-Loeve images applied to myocardial gated SPECT

“…KL1 gathers the pixels by family of temporal evolution. At each end of the color scale, are the pixels whose temporal evolution is opposite and the background noise is around zero [6][7].…”