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3d maximum a posteriori (3d-map) algorithm  (Siemens AG)

 
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    Structured Review

    Siemens AG 3d maximum a posteriori (3d-map) algorithm
    Noise versus resolution plots (a) at the CFOV and (b) at 8 mm offset for 2D-FBP, 2D-OSEM, <t>and</t> <t>3D-MAP</t> with various β values.
    3d Maximum A Posteriori (3d Map) Algorithm, supplied by Siemens AG, used in various techniques. Bioz Stars score: 90/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
    https://www.bioz.com/product/genetic+algorithm+based+on+the+maximum+entropy+method/3d+maximum+a+posteriori++3d+map++algorithm/pmc03281972-59-1-11
    Average 90 stars, based on 1 article reviews
    3d maximum a posteriori (3d-map) algorithm - by Bioz Stars, 2026-11
    90/100 stars

    Images

    1) Product Images from "Quantitative accuracy of MAP reconstruction for dynamic PET imaging in small animals"

    Article Title: Quantitative accuracy of MAP reconstruction for dynamic PET imaging in small animals

    Journal: Medical Physics

    doi: 10.1118/1.3678489

    Noise versus resolution plots (a) at the CFOV and (b) at 8 mm offset for 2D-FBP, 2D-OSEM, and 3D-MAP with various β values.
    Figure Legend Snippet: Noise versus resolution plots (a) at the CFOV and (b) at 8 mm offset for 2D-FBP, 2D-OSEM, and 3D-MAP with various β values.

    Techniques Used:

    Activity concentration ratio between spheres and surrounding background area for (a) 2D-FBP, (b) 2D-OSEM, (c) 3D-MAP β = 0, (d) 3D-MAP β = 0.01, (e) 3D-MAP β = 0.1 and (f) 3D-MAP β = 0.5) with various scan durations. Error bars indicate statistical uncertainty over the different realizations. A ratio of 10.11 indicates complete recovery of the activity. The count densities in the background area were multiplied by 10 for this presentation.
    Figure Legend Snippet: Activity concentration ratio between spheres and surrounding background area for (a) 2D-FBP, (b) 2D-OSEM, (c) 3D-MAP β = 0, (d) 3D-MAP β = 0.01, (e) 3D-MAP β = 0.1 and (f) 3D-MAP β = 0.5) with various scan durations. Error bars indicate statistical uncertainty over the different realizations. A ratio of 10.11 indicates complete recovery of the activity. The count densities in the background area were multiplied by 10 for this presentation.

    Techniques Used: Activity Assay, Concentration Assay

    Activity concentration of the spheres filled with 11C and background area filled with 18F solution plotted as a function of time for (a) 2D-FBP and (b) 3D-MAP (20 iterations and β = 0.05).
    Figure Legend Snippet: Activity concentration of the spheres filled with 11C and background area filled with 18F solution plotted as a function of time for (a) 2D-FBP and (b) 3D-MAP (20 iterations and β = 0.05).

    Techniques Used: Activity Assay, Concentration Assay

    Transverse and coronal images of the mouse myocardial phantom filled with 11C and reconstructed with (a)–(b) 2D-FBP and (c)–(d) 3D-MAP (20 iterations, β = 0.05).
    Figure Legend Snippet: Transverse and coronal images of the mouse myocardial phantom filled with 11C and reconstructed with (a)–(b) 2D-FBP and (c)–(d) 3D-MAP (20 iterations, β = 0.05).

    Techniques Used:

    (a) The MAP gated image showing the small ROI traced inside the left ventricle of a mouse injected with 0.5 mCi (18.5 MBq) of 18F-FDG. (b) Blood activity concentrations derived from the ROI shown in (a). Images were reconstructed with 2D-FBP and 3D-MAP (20 iterations, β = 0.05). EKG data (at diastole) are also presented.
    Figure Legend Snippet: (a) The MAP gated image showing the small ROI traced inside the left ventricle of a mouse injected with 0.5 mCi (18.5 MBq) of 18F-FDG. (b) Blood activity concentrations derived from the ROI shown in (a). Images were reconstructed with 2D-FBP and 3D-MAP (20 iterations, β = 0.05). EKG data (at diastole) are also presented.

    Techniques Used: Injection, Activity Assay, Derivative Assay

    Related Articles

    Activity Assay:

    Article Title: Quantitative accuracy of MAP reconstruction for dynamic PET imaging in small animals
    Article Snippet: The 3D maximum a posteriori (3D-MAP) algorithm 3 distributed with the Siemens PreClinical Solution microPET cameras is such an algorithm and implements these corrections (with the exception of the positron range correction).

    Concentration Assay:

    Article Title: Quantitative accuracy of MAP reconstruction for dynamic PET imaging in small animals
    Article Snippet: The 3D maximum a posteriori (3D-MAP) algorithm 3 distributed with the Siemens PreClinical Solution microPET cameras is such an algorithm and implements these corrections (with the exception of the positron range correction).

    Injection:

    Article Title: Quantitative accuracy of MAP reconstruction for dynamic PET imaging in small animals
    Article Snippet: The 3D maximum a posteriori (3D-MAP) algorithm 3 distributed with the Siemens PreClinical Solution microPET cameras is such an algorithm and implements these corrections (with the exception of the positron range correction).

    Derivative Assay:

    Article Title: Quantitative accuracy of MAP reconstruction for dynamic PET imaging in small animals
    Article Snippet: The 3D maximum a posteriori (3D-MAP) algorithm 3 distributed with the Siemens PreClinical Solution microPET cameras is such an algorithm and implements these corrections (with the exception of the positron range correction).

    Positron Emission Tomography:

    Article Title: Quantitative accuracy of MAP reconstruction for dynamic PET imaging in small animals
    Article Snippet: The 3D maximum a posteriori (3D-MAP) algorithm 3 distributed with the Siemens PreClinical Solution microPET cameras is such an algorithm and implements these corrections (with the exception of the positron range correction).

    Imaging:

    Article Title: Quantitative accuracy of MAP reconstruction for dynamic PET imaging in small animals
    Article Snippet: The 3D maximum a posteriori (3D-MAP) algorithm 3 distributed with the Siemens PreClinical Solution microPET cameras is such an algorithm and implements these corrections (with the exception of the positron range correction).



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