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Figure 3 | BMC Medical Physics

Figure 3

From: The 2D Hotelling filter - a quantitative noise-reducing principal-component filter for dynamic PET data, with applications in patient dose reduction

Figure 3

Improved image quality, very low injected activity. The improvement of image quality can be easily seen for a heart scan of a patient injected with only 50 MBq [11C]-Acetate. Large images display filtered data using principal components 1–4 (48% explained variance), and inserts show original data. The transition of acetate uptake from blood to tissue can be followed in A) blood in left chamber, to B,C) uptake in left chamber wall. Figure A) displays a 1% bias outside the circular field-of-view (corners).

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BMC Medical Physics

ISSN: 1756-6649