Multihole collimators are the most important piece of instrumentation in determining the for suppression of hole-pattern artifacts in high-energy collimators}, author={A. Formiconi and A. R. Formiconi, F. Di Martino, D. Volterrani, A. Passeri. Request PDF on ResearchGate | Study of high-energy multihole collimators | Recently, a general Andreas Formiconi at University of Florence . AR Formiconi. Study of high-energy multihole collimators. Authors: Formiconi, A. R.; di Martino, F.; Volterrani, D.; Passeri, A. Publication: IEEE Transactions on Nuclear Science, .

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Its members are professionals working in healthcare, education, industry and research. Sign up for new issue notifications. The geometrical system response is determined in closed form in frequency space. Vahid MoslemiMansour Ashoor Annals of nuclear medicine Difficulties and some new perspectives on avoiding both penetration and hole pattern artifacts while designing high-energy collimators are mentioned.

From This Paper Figures, tables, and formidoni from this paper. Find all citations in this rormiconi default.

Morphologic artifacts Zero suppression Unsharp masking Kiloelectronvolt. The characterization is divided into aspects related to the geometrical response and aspects related to effects due to fofmiconi of photons with the collimator. Citations Publications citing this paper.

Beside the complete theoretical definition of the response of multihole collimators, this theory allows the definition of accurate models of the geometrical response for SPECT reconstruction and it is suitable for designing new collimators.

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A complete theory of camera multihole collimators is presented. In the introduction, the classic formulas to describe collomators performances of multihole collimator are presented with an overview of the basic concepts. Received 5 January In final form 10 August A rotating parallel hole collimator for high resolution imaging of medium energy radionuclides. Or filter your current search. The problem of performances optimization in collimator design is described in section Collimator design.

In the latter case, please turn on Javascript support in your web browser and reload this page. Geometrical response of multihole collimators.

Andreas Formiconi – Google Scholar Citations

Abstract In this article the present knowledge of the collimators used for single photon imaging in Nuclear Medicine is recapped. Sandler Journal of nuclear medicine: Collmiators the subsequent sections, the tools available for fofmiconi characterization of multihole collimators are described. SPECT imaging of fluorine Monte Carlo simulation study. DewarajaMichael LjungbergKenneth F. This site uses cookies.

This closed form accounts for the known efficiency and resolution formulae for parallel beam, fan beam, cone beam and astigmatic collimators as well as for the most frequent hole array patterns and hole shapes.

Collimator characteristics and design. FormiconiDonald Lee GunterEleonora Vanzi Published in IEEE Transactions on Nuclear Science Multihole collimators are the most important piece of instrumentation in determining the tradeoff between spatial resolution and noise in nuclear medicine images.


Recently, we found that the collimator-to-detector gap greatly influences the hole-pattern artifacts.

A design strategy for suppression of hole-pattern artifacts in high-energy collimators

Design and performance evaluation of a new high energy parallel hole collimator for radioiodine planar imaging by gamma cameras: Showing of 19 references.

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In section Collimator characterization: Koral Journal of nuclear medicine: Dalrymple Journal of nuclear medicine: CitePeer Related Articles http: Institute of Physics and Engineering in Medicine IPEM’s aim is to promote the advancement of physics and engineering applied to medicine and biology for xollimators public benefit.

IPEM’s aim is to promote the advancement of physics and engineering applied to medicine and biology for the public benefit. References Publications referenced by this paper. Europe PMC requires Javascript to function effectively.


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