In the early days of PET, the partial volume effect (PVE) was identified as a serious factor
affecting image quality and limiting the accuracy of quantitative analysis. Because of the …

The resolution of positron emission tomography (PET) images is limited by the physics of
positron-electron annihilation and instrumentation for photon coincidence detection. Model …

We have constructed a three-dimensional (3D) whole body mouse atlas from coregistered x-
ray CT and cryosection data of a normal nude male mouse. High quality PET, x-ray CT and …

In positron emission tomography (PET) and single photon emission tomography (SPECT),
attenuation correction is necessary for quantitative reconstruction of the tracer distribution …

Clinical widespread use of edge-preserving penalized-likelihood (PL) methods has been
hindered by the properties of the resulting images such as blocky background noise …

We present accurate and efficient methods for estimating the spatial resolution and noise
properties of nonquadratically regularized image reconstruction for positron emission …

Quantitative measures of image quality and reliability are critical for both qualitative
interpretation and quantitative analysis of medical images. While, in theory, it is possible to …

The exponentiated Gumbel model has been shown to be useful in climate modeling
including global warming problem, flood frequency analysis, offshore modeling, rainfall …

Detecting cancerous lesions is a major clinical application in emission tomography. In
previous work, we have studied penalized maximum-likelihood (PML) image reconstruction …

In this paper, we present a PET reconstruction method using the wavelet-based maximum a
posteriori (MAP) expectation-maximization (EM) algorithm. The proposed method, namely …