Diagnostic Ultrasound - Effects On Thyroid

[Guest guest]

>As usual no clinical studies where ever done before the introduction

>of X-Rays and Ultrasound. There much concern about routine fetal

>ultrasound so damage cannot be totally be ruled out...

>

>Suspect ultrasound carries less risk than X-rays but it does carry

>risk. I am not sure if it permanently impairs iodine uptake - if this

>is the case then that is very serious indeed as iodine deficiency is

>a major health hazard especially if you drink

><http://www.newmediaexplorer.org/chris/2008/01/28/water_toxicity_hydrofluorosil\

icic_acid.htm>fluoridated

>

>water. See:

>

><http://www.newmediaexplorer.org/chris/2007/01/31/consequences_of_iodine_defici\

ency.htm>Consequences

>

>of Iodine Deficiency

>

>

>

>

>Both in vitro and in vivo exposures of muscle tissue have

>been reported to trigger contractions. Therapeutic intensities of

>ultrasound have also been reported to alter thyroid function in

>man.

>

>6.4.6.4. Thyroid

>

> Changes in organ function have been reported for the thyroid

>following ultrasound exposures in the therapy range, i.e., 1 W/cm2,

>0.8 MHz, 10 min (Slawinski, 1965, 1966). Such exposures were found

>to result in impaired iodine uptake and, in animals with marked

>thyroid hypofunction, reduced iodothyronine synthesis. Hrazdira &

>Konecny (1966), who reported similar findings, indicated that

>epithelial cells of the thyroid follicles showed a partial loss in

>ability to concentrate inorganic iodine.

>

> Some reports have appeared of whole-body systemic effects of

>ultrasonic irradiation, in both experimental animals and man.

>Sterewa & Belewa-Staikova (1976) irradiated the lower abdomen of

>rats at therapeutic intensities (0.2-1.0 W/cm2) and reported a

>consequent decrease in thyroxin and iodothyroxins in the thyroid.

>

>

>

>

>Extracted

>from:http://www.inchem.org/documents/ehc/ehc/ehc22.htm#SubSectionNumber:6.4.2