pet (positron emission tomography) is a powerful imaging technique that can provide quantitative information on the distribution of positron emitter labeled radiopharmaceuticals (pet radiopharmaceuticals) in the body. positrons (ß+) are positively charged beta particles. they are emitted when the atom is proton rich. a positron has only a transient existence. after losing all of its kinetic ene...

| This article reviews a speci c speech research area called acoustic-to-articulatory inversion of speech, or speech inversion, which refers to the problem of mapping the acoustic speech signal onto a space describing the conguration of the human vocal tract that actually produced this signal. This space may be modeled in a variety of ways, such as with trajectories of the movement of the artic...

while the introduction of radioactive tracers in the study of metabolic pathways has been well-documented in clinical thyroidology as early as 1924, the widespread utilization in other clinical specialties has been hampered by slow developments in radiation-detecting devices and in the production of appropriate radiopharmaceuticals, in addition tothe morbid fear of radiation. in the philippines...

in 1955, the first nuclear medicine division was established in thailand by professor romsai suwannik in the department of radiology, siriraj hospil, mahidol university in bangkok. in 1959 four years later, the second nuclear medicine division was established in the department of radiology, chulalongkorn hospital in bangkok. the third nuclear medicine division was started in rajvithi hospital i...

dear editor:   the nuclear denotation due to the leakage from nuclear electricity plant in japan after the giant tsunami is a great concern. there are many possible health effects including induction of ophthalmic disorder on the affected population to the nuclear denotation. indeed the observation on the effect of radioactive leaking from the nuclear plant after the well-known nuclear leakage ...

The role of the nuclear medicine has changed, from the early days when it was the only alternative to x-rays, to the present, when nuclear images are interpreted in light of specific metabolic processes, not anatomy. The development of specific receptor targeting radiopharmaceuticals, markers of viability using PETor SPECT, analogues of neurotransmitters etc., have placed the nuclear medi...

Nuclear Medicine was established in Myanmar in 1963 by Dr Soe Myint and International Atomic Energy expert Dr R. Hochel at Yangon General Hospital. Nuclear medicine diagnostic and therapeutic services started with Probe Scintillation Detector Systems and rectilinear scanner. In the early stage, many Nuclear Medicine specialists from the International Atomic Energy Agency (IAEA) spent some time ...

although the genome is defined by its primary sequence, its functional properties, are determined by far more complex mechanisms and depend on multiple layers of nuclear organization. the architecture of the nucleus includes two overlapping structures: the chromatin and a framework structure named the nuclear matrix. ultra-structural studies reveal that the nuclear matrix is a network consistin...