{"id":62706,"date":"2022-10-08T04:42:16","date_gmt":"2022-10-08T09:42:16","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/can-body-be-harmed-by-ultrasonic-waves\/"},"modified":"2025-01-27T06:01:51","modified_gmt":"2025-01-27T11:01:51","slug":"can-body-be-harmed-by-ultrasonic-waves","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/cs\/can-body-be-harmed-by-ultrasonic-waves\/","title":{"rendered":"Ultrazvuk a lidsk\u00e9 t\u011blo: rizika a \u00fa\u010dinky"},"content":{"rendered":"

Ultrazvukov\u00e9 vlny jsou v\u0161udyp\u0159\u00edtomn\u00e9 v modern\u00edm sv\u011bt\u011b, pou\u017e\u00edvan\u00e9 v l\u00e9ka\u0159stv\u00ed, pr\u016fmyslu a dokonce i v dom\u00e1cnostech. Ot\u00e1zka, zda mohou ultrazvukov\u00e9 vlny \u0161kodit lidsk\u00e9mu t\u011blu, je v\u0161ak komplexn\u00ed a vy\u017eaduje detailn\u011bj\u0161\u00ed prozkoum\u00e1n\u00ed. Vliv ultrazvuku z\u00e1vis\u00ed na \u0159ad\u011b faktor\u016f, v\u010detn\u011b intenzity, frekvence a doby expozice.<\/p>\n

Intenzita ultrazvuku a jeho biologick\u00e9 \u00fa\u010dinky<\/p>\n

Intenzita ultrazvuku je kl\u00ed\u010dov\u00fdm faktorem ur\u010duj\u00edc\u00edm jeho potenci\u00e1ln\u00ed \u0161kodlivost. N\u00edzkointenzivn\u00ed ultrazvuk, jak\u00fd se pou\u017e\u00edv\u00e1 nap\u0159\u00edklad v l\u00e9ka\u0159sk\u00fdch zobrazovac\u00edch metod\u00e1ch (sonografii), obecn\u011b nepo\u0161kozuje tk\u00e1n\u011b. Vysokointenzivn\u00ed ultrazvuk v\u0161ak m\u016f\u017ee zp\u016fsobit \u0159adu ne\u017e\u00e1douc\u00edch \u00fa\u010dink\u016f, v\u010detn\u011b zah\u0159\u00edv\u00e1n\u00ed tk\u00e1n\u00ed, kavitace (tvorby bublin v kapalin\u00e1ch t\u011bla) a mechanick\u00e9ho po\u0161kozen\u00ed bun\u011bk. Hranice mezi bezpe\u010dnou a nebezpe\u010dnou intenzitou se li\u0161\u00ed v z\u00e1vislosti na frekvenci a d\u00e9lce expozice.<\/p>\n

Frekvence ultrazvuku a jeho c\u00edlen\u00ed na tk\u00e1n\u011b<\/p>\n

Frekvence ultrazvukov\u00fdch vln ovliv\u0148uje jejich pronik\u00e1n\u00ed do t\u011bla a interakci s tk\u00e1n\u011bmi. N\u00edzkofrekven\u010dn\u00ed ultrazvuk pronik\u00e1 hloub\u011bji, zat\u00edmco vysokofrekven\u010dn\u00ed ultrazvuk se absorbuje v povrchov\u00fdch vrstv\u00e1ch. To m\u00e1 d\u016fsledky pro potenci\u00e1ln\u00ed po\u0161kozen\u00ed. Vysokofrekven\u010dn\u00ed ultrazvuk m\u016f\u017ee zp\u016fsobit povrchov\u00e9 pop\u00e1len\u00ed, zat\u00edmco n\u00edzkofrekven\u010dn\u00ed ultrazvuk m\u016f\u017ee ovlivnit hlub\u0161\u00ed tk\u00e1n\u011b.<\/p>\n\n\n\n\n\n\n\n
Frekvence (MHz)<\/th>\nHloubka pronik\u00e1n\u00ed<\/th>\nPotenci\u00e1ln\u00ed riziko<\/th>\n<\/tr>\n<\/thead>\n
1-5<\/td>\nHlubok\u00e9<\/td>\nZah\u0159\u00edv\u00e1n\u00ed, kavitace<\/td>\n<\/tr>\n
5-10<\/td>\nSt\u0159edn\u00ed<\/td>\nZah\u0159\u00edv\u00e1n\u00ed, kavitace<\/td>\n<\/tr>\n
>10<\/td>\nPovrchov\u00e9<\/td>\nPovrchov\u00e9 pop\u00e1len\u00ed<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Doba expozice a kumulativn\u00ed \u00fa\u010dinky<\/p>\n

Doba expozice ultrazvuku je dal\u0161\u00edm kritick\u00fdm faktorem. Kr\u00e1tkodob\u00e1 expozice i vysokointenzivn\u00edmu ultrazvuku nemus\u00ed nutn\u011b v\u00e9st k trval\u00e9mu po\u0161kozen\u00ed. Nicm\u00e9n\u011b, dlouhodob\u00e1 nebo opakovan\u00e1 expozice i n\u00edzkointenzivn\u00edmu ultrazvuku m\u016f\u017ee m\u00edt kumulativn\u00ed \u00fa\u010dinky a v\u00e9st k po\u0161kozen\u00ed tk\u00e1n\u00ed. To je d\u016fle\u017eit\u00e9 zejm\u00e9na u pracovn\u00edk\u016f, kte\u0159\u00ed jsou vystaveni ultrazvuku po del\u0161\u00ed dobu.<\/p>\n

Ochrana p\u0159ed \u0161kodliv\u00fdmi \u00fa\u010dinky ultrazvuku<\/p>\n

V\u011bt\u0161ina b\u011b\u017en\u00e9ho pou\u017eit\u00ed ultrazvuku, nap\u0159\u00edklad v l\u00e9ka\u0159sk\u00e9 diagnostice, p\u0159edstavuje minim\u00e1ln\u00ed riziko. Nicm\u00e9n\u011b, je nutn\u00e9 dodr\u017eovat bezpe\u010dnostn\u00ed opat\u0159en\u00ed p\u0159i pr\u00e1ci s vysokointenzivn\u00edm ultrazvukem. To zahrnuje minimalizaci doby expozice, pou\u017eit\u00ed ochrann\u00fdch pom\u016fcek a dodr\u017eov\u00e1n\u00ed bezpe\u010dnostn\u00edch protokol\u016f. Spr\u00e1vn\u00e9 pou\u017e\u00edv\u00e1n\u00ed ultrazvukov\u00fdch za\u0159\u00edzen\u00ed je kl\u00ed\u010dov\u00e9 pro minimalizaci rizik.<\/p>\n

Z\u00e1v\u011brem lze \u0159\u00edci, \u017ee ultrazvukov\u00e9 vlny mohou za ur\u010dit\u00fdch podm\u00ednek \u0161kodit lidsk\u00e9mu t\u011blu. Riziko po\u0161kozen\u00ed z\u00e1vis\u00ed na intenzit\u011b, frekvenci a dob\u011b expozice. P\u0159i dodr\u017eov\u00e1n\u00ed bezpe\u010dnostn\u00edch opat\u0159en\u00ed a spr\u00e1vn\u00e9m pou\u017e\u00edv\u00e1n\u00ed ultrazvukov\u00fdch za\u0159\u00edzen\u00ed je v\u0161ak mo\u017en\u00e9 minimalizovat potenci\u00e1ln\u00ed rizika a vyu\u017e\u00edt jeho prosp\u011b\u0161n\u00e9 vlastnosti.<\/p>\n","protected":false},"excerpt":{"rendered":"

Ultrazvukov\u00e9 vlny jsou v\u0161udyp\u0159\u00edtomn\u00e9 v modern\u00edm sv\u011bt\u011b, pou\u017e\u00edvan\u00e9 v l\u00e9ka\u0159stv\u00ed, pr\u016fmyslu a dokonce i v dom\u00e1cnostech. Ot\u00e1zka, zda mohou ultrazvukov\u00e9 vlny \u0161kodit lidsk\u00e9mu t\u011blu, je v\u0161ak komplexn\u00ed a vy\u017eaduje detailn\u011bj\u0161\u00ed prozkoum\u00e1n\u00ed. Vliv ultrazvuku z\u00e1vis\u00ed na \u0159ad\u011b faktor\u016f, v\u010detn\u011b intenzity, frekvence a doby expozice. Intenzita ultrazvuku a jeho biologick\u00e9 \u00fa\u010dinky Intenzita ultrazvuku je kl\u00ed\u010dov\u00fdm faktorem ur\u010duj\u00edc\u00edm<\/p>\n","protected":false},"author":1,"featured_media":18838,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6415],"tags":[],"class_list":["post-62706","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","prodpage-classic"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/posts\/62706","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/comments?post=62706"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/posts\/62706\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/media\/18838"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/media?parent=62706"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/categories?post=62706"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/tags?post=62706"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}