ABSTRACT
As a novel,label-free and non-invasive detection modality,terahertz(THz,1THz=1012 Hz)spectroscopy has been widely used in various areas.For instance,in the biomedical field,it has great potentials to provide real-time scanning of living cells and tissues due to its unique advantages.Significant achievements have been reached in cell detection, related to bacterial identification, cancer cell characterization and blood cell detection.In tissue detection, the THz spectroscopy can be used to provide real-time scanning of living tissues and fast diagnosis.Furthermore, a single system which integrated THz spectroscopy and THz imaging would be able to collect information more sensitive and comprehensive. However,the clinical adaption of THz spectroscopy is still a controversial issue attributed to some intrinsic limitations and technical bottlenecks.In this article, both the application of THz spectroscopy in cell and tissue detection and the existing challenges and strategies to accelerate clinical applications were reviewed comprehensively.
ABSTRACT
With the rapid development of instrument technology , Raman spectrometer has become one of the fastest growing type of instrument in the molecular spectroscopy . In recent years , Raman spectrometer gradually emerging in the application in the domain of biology and medicine , Raman spectroscopy technology appears new development constantly in the rapid identification and classification of microorganisms because of its rapid , efficient, sensitive, noninvasive, repeatability and other unique advantages.This article describes its application in the rapid detection of bacteria , viruses and other microorganisms , and also prospects for the application of Raman spectroscopy in future clinical work .
ABSTRACT
Chinese herbs with bitter flavor have the function of purgation and dryness as well as strengthening yin.Strengthening Yin means keeping and maintaining yin fluid.Actually,it is to draw assistance from some Chinese herbs with bitter flavor to purge excessive fire in order to maintain yin qi by heat-clearing and fire-purging,that is to say purging fire to keep or save yin.Strengthening yin of bitter herbs is different from the moistening and nourishing function of sweet-cold herbs.It can be generally divided into three aspects: purging ministerial fire and restoring renal yin,clearing heat and purging fire to maintain yin fluid;purging to preserve yin.Strengthening yin doesn't mean the property and flavor of bitter-cold can nourish yin directly.We should not only emphasize clearing fire by using herbs with bitter in flavor and cold in nature,but also pay attention to nourish yin.It is causal relation that exists between purging fire and maintaining yin.The former is only a means and method,and the latter is objection and effect.Because the bitter-flavor can only damage yin by bitterness and dryness but is not good at benefiting yin,we cannot strengthen yin by using bitter herbs in treating yin-deficiency syndrome without excessive fire.
ABSTRACT
Objective To investigate the demands of PACS system on the storage and the ways to optimize its performance.Methods The storage media,such as CD Rom library and disc array,were integrated,and three-tier network structure was established.Results Online storage through virtual storage technology could be applied to high-capacity,high-quality and high-reliability medical image storage.Conclusion Storage optimization PACS is implemented.