MSE of the different projection and the original projection.

<p>MSE of the different projection and the original projection.</p

The compare of reconstruction performance between SIRT, SART, MAP-EM and Iterative FBP (the image size is 512 × 512 and the angle interval is 0.5°).

<p>The compare of reconstruction performance between SIRT, SART, MAP-EM and Iterative FBP (the image size is 512 × 512 and the angle interval is 0.5°).</p

The flowchart of the iterative FBP algorithm.

<p>The flowchart of the iterative FBP algorithm.</p

Parallel Projection: an object <i>f</i>(<i>x</i>, <i>y</i>) and its projection <i>p</i>_<i>θ</i>(<i>t</i>) from angle <i>θ</i>.

<p>Parallel Projection: an object <i>f</i>(<i>x</i>, <i>y</i>) and its projection <i>p</i>_<i>θ</i>(<i>t</i>) from angle <i>θ</i>.</p

A Novel Iterative CT Reconstruction Approach Based on FBP Algorithm - Fig 7

<p>(a) The compare of MSE using SART and Iterative FBP. (b) is the portion of the first 60s of (a).</p

Reconstruction from the filtered projection: the linear interpolation procedure.

<p>Reconstruction from the filtered projection: the linear interpolation procedure.</p

The original projection vector p470, the reprojection vector, p471, and the corrected projection vector, p473, for the head phantom of size 128 × 128 and <i>θ</i> = 47°.

<p>(a) The whole vector, (b) the portion of the black in (a).</p