New PDF release: Advanced Image Acquisition, Processing Techniques, Applns,

By D. Ventzas

ISBN-10: 9535103423

ISBN-13: 9789535103424

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In nuclear physics, radiation detectors capable of identifying energies in the order of keV are used. The photon detector for the mini gamma camera consists of a collimator, a scintillator crystal, an array of photomultiplier tubes and positioning electronics. , 2003). It is made of lead or tungsten and is crossed by a distributed set of holes with different geometric patterns. The lead bricks between the holes are called septas. The collimator improves the system detection. 3 Scintillator crystal In high-resolution mini gamma camera or micro PET equipment, the scintillator crystals can be cut into small blocks that are grouped into a matrix, separated by a reflective material.

We have presented the imaging protocol and technical detail of the post-processing methodology. The parameters are well defined yet adjustable and tuneable to new applications. By decreasing the amount of manual operation needed, we hope this technique can reduce the threshold for obesity researchers to use MRI in their research. 7. Acknowledgment We would like to thank Richard Simerly for the experiments design and adipose research support. We thanks Susan Lee, Priyank Sharma and Marvin Nelson for input in the adipose measurement research.

2 Automatic measurement Considering the above limitation and complexity added by manual analysis, automated or semi-automated techniques are urgently demanded for adipose measurements which can relieve the researcher from the tedious operational burdens as well as reduce the operatordependent errors. In order to accomplish automatic measurement, many tasks have to be considered. For fat measurement, the total size and locations of the fat tissues is basic information needed. From the imaging and image-processing viewpoint, how to extracting the fat pixels from the MR image is the first task.

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Advanced Image Acquisition, Processing Techniques, Applns, by D. Ventzas

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