Both PET and CT useful for judging biologic changes
Not only can positron emission tomography (PET) help evaluate treatment for gastrointestinal stromal tumors (GIST) by revealing biologic changes such as how the tumor processes the fuel that makes it grow, but CT can indirectly reveal biologic changes as well by analyzing the tumors density, say researchers from The University of Texas M. D. Anderson Cancer Center in Houston.
For the study, researchers evaluated 173 GISTs--tumors that usually begin in the wall of the GI tract--in 36 patients who had undergone a protein enzyme inhibitor treatment, 29 of which underwent both CT and PET. In those 29 patients, the researchers found a high correlation between the tumor responses based on tumor density and changes in internal characteristics of the tumors shown on CT and the changes in glucose metabolism of the tumors shown on PET.
Jason Ocker | EurekAlert!
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The miniaturization of the current technology of storage media is hindered by fundamental limits of quantum mechanics. A new approach consists in using so-called spin-crossover molecules as the smallest possible storage unit. Similar to normal hard drives, these special molecules can save information via their magnetic state. A research team from Kiel University has now managed to successfully place a new class of spin-crossover molecules onto a surface and to improve the molecule’s storage capacity. The storage density of conventional hard drives could therefore theoretically be increased by more than one hundred fold. The study has been published in the scientific journal Nano Letters.
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