Cone Beam TC: una doppia preoccupazione

Revisit of combined parallel-beam/cone-beam or fan-beam/cone-beam imaging.

PURPOSE This aim of this paper is to revisit the parallel-beam/cone-beam or fan-beam/cone-beam imaging configuration, and to investigate whether this configuration has any advantages. METHODS Twenty years ago, it was suggested to simultaneously use a parallel-beam (or a fan-beam) collimator and a cone-beam collimator to acquire single photon emission computed tomography data. The motivation w...

Practical cone-beam algorithm

Received November 11, 1983; accepted February 28, 1984 A convolution-backprojection formula is deduced for direct reconstruction of a three-dimensional density function from a set of two-dimensional projections. The formula is approximate but has useful properties, including errors that are relatively small in many practical instances and a form that leads to convenient computation. It reduces ...

Cone Beam 3D Imaging

Practical cone - beam algorithm

A convolution-backprojection formula is deduced for direct reconstruction of a three-dimensional density function from a set of two-dimensional projections. The formula is approximate but has useful properties, including errors that are relatively small in many practical instances and a form that leads to convenient computation. It reduces to the standard fan-beam formula in the plane that is p...

On partita doppia

In 1494 Fra Luca Pacioli published in Venice one of the first printed mathematical books [P1494]. One section, Computis e Scripturis, is the first published description of partita doppia or double-entry bookkeeping, the foundation of accounting. Double-entry bookkeeping had been developed over a period of 200 years by Italian merchants and bankers. The aim of accounting is the measurement of a ...