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Reference.org
Convolution for optical broad-beam responses in scattering media
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<p>Photon transport theories in <a href="/facts/Physics/a7aH2y08">Physics</a>, <a href="/facts/Medicine/2fnp90Je">Medicine</a>, and <a href="/facts/Statistics/DNPsKGYU">Statistics</a> (such as the <a href="/facts/Monte_Carlo_methods/AkHjY7jc">Monte Carlo method</a>), are commonly used to model <a href="/facts/Monte_Carlo_method_for_photon_transport/af5mjFGG">light propagation in tissue</a>. The responses to a <a href="/facts/Pencil_beam/wQtPHxsa">pencil beam</a> incident on a scattering medium are referred to as <a href="/facts/Green%2527s_function/rKxKKPcp">Green's functions</a> or <a href="/facts/Impulse_response/l4vaE5er">impulse responses</a>. Photon transport methods can be directly used to compute broad-beam responses by distributing photons over the cross section of the beam. However, <a href="/facts/Convolution/PVPrdz9J">convolution</a> can be used in certain cases to improve computational efficiency. </p>