Titlebook: Ultrasound; Medical Applications Michael H. Repacholi,Martino Grandolfo,Alessandro Book 1987 Plenum Press, New York 1987 assessment.birth.

EXALT

Haematological Effects,rasound exposure without also irradiating blood and the vessels which contain it. If ultrasound produces a relatively small change in the functional properties of the blood (e.g. an effect on leucocytes and their role in the immunological protection of the animal) or in the ability of blood to flow

Indolent

Glutinous

玩忽职守

Exposure to Medical Ultrasound: Studies of Human Effects,sed worldwide in several clinical specialities. In one medical speciality alone, obstetrics, estimates of the percentage of pregnant women in the United States examined by diagnostic ultrasound range from 15–40% (NIH, 1984); in some countries, diagnostic ultrasound is a recommended routine prenatal

轻打

Standards and Recommendations on Ultrasound Exposure,limiting human exposure to ultrasound. Recommendations on research priorities identified by various institutions form the basis of a separate publication in this text by Dr. Nyborg. General guidelines or policy statements have been issued by various professional, national and international organisat

Atheroma

Research Priorities in Ultrasound, U.S. Department of Health and Human Services, Bureau of Radiological Health (BRH), prepared by government scientists. The BRH report contains a comprehensive tabulation and discussion of literature on biological effects of ultrasound, especially where these bear on safety of medical ultrasound. On

禁止

Book 1987tific Culture in Erice, Italy, September 6-15, 1985. The sixth course of the School, entitled "Advances in Applications, Biological Effects, and Dosimetry of Ultrasound," provided an in-depth review of all facets of ultra­ sound interactions and their biological effects on living systems, allowing a

单调性

CLAIM

Sources and Applications of Ultrasound,ange of human hearing. In addition bats use ultrasound as a guidance system between 50 and 100 kHz. This latter fact is reputed to have been first postulated by Spallanzani, an Italian Scientist, in 1794 (Health and Welfare 1980a).

Pde5-Inhibitors

,Applications of Ultrasound in Medicine — Comparison with Other Modalities,ese applications employ sound in the frequency range of 0.8 – 15 MHz. The choice of frequency used in any specific application is based on considerations of sound absorption, adequate penetration and, in diagnostic applications, adequate resolution.