SPECT region of interest reconstruction with truncated transmission and emission data

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SPECT region of interest reconstruction with truncated transmission and emission data.

PURPOSE The aim of this article is to propose an exact SPECT region of interest (ROI) reconstruction method using truncated transmission and truncated emission data. METHODS Recently, the authors published two articles in Physics in Medicine and Biology with two results in SPECT ROI emission image reconstruction. The first result states that if the transmission data are truncated but the emis...

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Exact emission SPECT reconstruction with truncated transmission data.

UNLABELLED It is common, even with new SPECT/CT systems, that the transmission data are truncated. This paper develops a method that obtains exact attenuation correction with truncated transmission data. The emission object (e.g., the heart) is assumed to have a finite, convex support, whose emission projections are not truncated. The transmission measurements over the support are available, bu...

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Region-of-Interest reconstruction from truncated cone-beam projections

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Two-dimensional iterative region-of-interest (ROI) reconstruction from truncated projection data.

A small detector or limited gantry rotation angles may cause data truncation, in which case the entire object cannot be completely reconstructed. However, a small region of interest (ROI) may be recoverable in certain truncation situations. Two analytical methods have been proposed for exact ROI reconstruction. Here we evaluate the capability of ROI reconstruction using an maximum-likelihood ex...

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ژورنال

عنوان ژورنال: Medical Physics

سال: 2010

ISSN: 0094-2405,2473-4209

DOI: 10.1118/1.3471376