نتایج جستجو برای: 13n
تعداد نتایج: 345 فیلتر نتایج به سال:
PURPOSE To evaluate whether enhanced external counterpulsation (EECP) exerts an effect on myocardial perfusion. METHODS Eleven patients with angina were studied before and after 35 sessions of EECP treatment. Myocardial perfusion was quantified with positron emission tomography and intravenous 13N-ammonia at rest and after dipyridamole, by means of a two-compartment mathematical model. CONC...
R. G. T. Zegers,1,2,3,* E. F. Brown,1,2,3 H. Akimune,4 Sam M. Austin,1,3 A. M. van den Berg,5 B. A. Brown,1,2,3 D. A. Chamulak,2,3 Y. Fujita,6 M. Fujiwara,7,8 S. Galès,9 M. N. Harakeh,5 H. Hashimoto,8 R. Hayami,10 G. W. Hitt,1,2,3 M. Itoh,11 T. Kawabata,12 K. Kawase,8 M. Kinoshita,4 K. Nakanishi,8 S. Nakayama,10 S. Okumura,8 Y. Shimbara,1,3 M. Uchida,13 H. Ueno,14 T. Yamagata,4 and M. Yosoi8 1N...
Erdős conjectured in 1946 that every n-point set P in convex position in the plane contains a point that determines at least bn/2c distinct distances to the other points of P . The best known lower bound due to Dumitrescu (2006) is 13n/36−O(1). In the present note, we slightly improve on this result to (13/36 + ε)n − O(1) for ε ≈ 1/23000. Our main ingredient is an improved bound on the maximum ...
BACKGROUND Expression of αvβ3 integrin is increased after myocardial infarction as part of the repair process. Increased expression of αvβ3 has been shown by molecular imaging with 18F-galacto-RGD in a rat model. The 68Ga-labelled RGD compounds 68Ga-NODAGA-RGD and 68Ga-TRAP(RGD)3 have high specificity and affinity, and may therefore serve as alternatives of 18F-galacto-RGD for integrin imaging....
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