{"id":61560,"date":"2023-04-21T13:40:27","date_gmt":"2023-04-21T18:40:27","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/diy-ultrasonic-imaging\/"},"modified":"2025-01-27T06:04:24","modified_gmt":"2025-01-27T11:04:24","slug":"diy-ultrasonic-imaging","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/cs\/diy-ultrasonic-imaging\/","title":{"rendered":"DIY ultrazvukov\u00e9 zobrazov\u00e1n\u00ed: Praktick\u00fd n\u00e1vod"},"content":{"rendered":"<p>Ultrazvukov\u00e9 zobrazov\u00e1n\u00ed si v posledn\u00edch letech z\u00edsk\u00e1v\u00e1 st\u00e1le v\u011bt\u0161\u00ed popularitu nejen v profesion\u00e1ln\u00edch medic\u00ednsk\u00fdch za\u0159\u00edzen\u00edch, ale i v oblasti DIY (Do It Yourself) projekt\u016f.  Mo\u017enost sestrojit si vlastn\u00ed ultrazvukov\u00fd skener, a\u010dkoliv n\u00e1ro\u010dn\u00e1, otev\u00edr\u00e1 fascinuj\u00edc\u00ed sv\u011bt medic\u00ednsk\u00e9ho zobrazov\u00e1n\u00ed a umo\u017e\u0148uje experimentovat s technikami a aplikacemi. Nicm\u00e9n\u011b je d\u016fle\u017eit\u00e9 si uv\u011bdomit, \u017ee konstrukce funk\u010dn\u00edho a bezpe\u010dn\u00e9ho za\u0159\u00edzen\u00ed vy\u017eaduje hlubok\u00e9 znalosti elektroniky, programov\u00e1n\u00ed a fyziky.  Tento \u010dl\u00e1nek se zam\u011b\u0159\u00ed na kl\u00ed\u010dov\u00e9 aspekty DIY ultrazvukov\u00e9ho zobrazov\u00e1n\u00ed.<\/p>\n<p>Z\u00e1kladn\u00ed principy ultrazvukov\u00e9ho zobrazov\u00e1n\u00ed<\/p>\n<p>Ultrazvukov\u00e9 zobrazov\u00e1n\u00ed, tak\u00e9 zn\u00e1m\u00e9 jako sonografie, vyu\u017e\u00edv\u00e1 vysokofrekven\u010dn\u00edch zvukov\u00fdch vln k vytvo\u0159en\u00ed obrazu vnit\u0159n\u00edch struktur t\u011bla.  P\u0159evodn\u00edk vys\u00edl\u00e1 ultrazvukov\u00e9 impulzy, kter\u00e9 se odr\u00e1\u017eej\u00ed od r\u016fzn\u00fdch tk\u00e1n\u00ed a struktur s r\u016fznou akustickou impedanc\u00ed.  Odra\u017een\u00e9 vlny jsou detekov\u00e1ny stejn\u00fdm nebo jin\u00fdm p\u0159evodn\u00edkem a zpracov\u00e1ny do obrazu.  \u010cas, kter\u00fd vlna pot\u0159ebuje k n\u00e1vratu, ur\u010duje hloubku struktury, zat\u00edmco intenzita odra\u017een\u00e9ho sign\u00e1lu ur\u010duje jej\u00ed akustickou impedanci a tedy i zobrazen\u00ed na obrazovce.  Kl\u00ed\u010dov\u00fdm parametrem je frekvence ultrazvuku; vy\u0161\u0161\u00ed frekvence poskytuj\u00ed lep\u0161\u00ed rozli\u0161en\u00ed, ale men\u0161\u00ed hloubku pr\u016fniku.<\/p>\n<p>Komponenty DIY ultrazvukov\u00e9ho skeneru<\/p>\n<p>Konstrukce funk\u010dn\u00edho ultrazvukov\u00e9ho skeneru vy\u017eaduje n\u011bkolik kl\u00ed\u010dov\u00fdch komponent:<\/p>\n<table class=\"table table-striped table-bordered\">\n<thead>\n<tr>\n<th>Komponenta<\/th>\n<th>Funkce<\/th>\n<th>Pozn\u00e1mka<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Ultrazvukov\u00fd p\u0159evodn\u00edk<\/td>\n<td>Vys\u00edl\u00e1 a p\u0159ij\u00edm\u00e1 ultrazvukov\u00e9 vlny.<\/td>\n<td>Volba frekvence z\u00e1vis\u00ed na po\u017eadovan\u00e9 hloubce pr\u016fniku a rozli\u0161en\u00ed.<\/td>\n<\/tr>\n<tr>\n<td>Analogov\u011b-digit\u00e1ln\u00ed p\u0159evodn\u00edk (ADC)<\/td>\n<td>P\u0159ev\u00e1d\u00ed analogov\u00fd sign\u00e1l z p\u0159evodn\u00edku na digit\u00e1ln\u00ed data.<\/td>\n<td>Kvalitn\u00ed ADC je kl\u00ed\u010dov\u00e9 pro p\u0159esn\u00e9 zobrazen\u00ed.<\/td>\n<\/tr>\n<tr>\n<td>Mikro\u0159adi\u010d<\/td>\n<td>Zpracov\u00e1v\u00e1 digit\u00e1ln\u00ed data a \u0159\u00edd\u00ed zobrazen\u00ed.<\/td>\n<td>V\u00fdkonn\u00fd mikro\u0159adi\u010d s dostate\u010dnou pam\u011bt\u00ed je nezbytn\u00fd.<\/td>\n<\/tr>\n<tr>\n<td>Zobrazovac\u00ed za\u0159\u00edzen\u00ed<\/td>\n<td>Zobrazuje vytvo\u0159en\u00fd obraz.<\/td>\n<td>M\u016f\u017ee se jednat o LCD displej, monitor PC nebo jin\u00fd zobrazovac\u00ed syst\u00e9m.<\/td>\n<\/tr>\n<tr>\n<td>Nap\u00e1jec\u00ed zdroj<\/td>\n<td>Poskytuje nap\u00e1jen\u00ed pro v\u0161echny komponenty.<\/td>\n<td>Stabiln\u00ed nap\u00e1jen\u00ed je kl\u00ed\u010dov\u00e9 pro spr\u00e1vn\u00fd chod za\u0159\u00edzen\u00ed.<\/td>\n<\/tr>\n<tr>\n<td>Zpracov\u00e1n\u00ed sign\u00e1lu<\/td>\n<td>Filtrace, zes\u00edlen\u00ed a dal\u0161\u00ed \u00fapravy p\u0159ijat\u00e9ho sign\u00e1lu.<\/td>\n<td>D\u016fle\u017eit\u00e9 pro zlep\u0161en\u00ed kvality obrazu a potla\u010den\u00ed \u0161umu.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Software a programov\u00e1n\u00ed<\/p>\n<p>Software hraje kl\u00ed\u010dovou roli v zpracov\u00e1n\u00ed sign\u00e1lu a zobrazen\u00ed obrazu.  Program mus\u00ed b\u00fdt schopen komunikovat s ADC, zpracov\u00e1vat p\u0159ijat\u00e1 data, prov\u00e1d\u011bt pot\u0159ebn\u00e9 v\u00fdpo\u010dty a generovat obraz.  Programov\u00e1n\u00ed vy\u017eaduje znalosti programovac\u00edch jazyk\u016f jako C, C++ nebo Python a hlubok\u00e9 pochopen\u00ed algoritm\u016f pro zpracov\u00e1n\u00ed sign\u00e1lu.  Dostupn\u00e9 jsou i open-source projekty, kter\u00e9 mohou slou\u017eit jako v\u00fdchoz\u00ed bod pro vlastn\u00ed v\u00fdvoj.<\/p>\n<p>Bezpe\u010dnostn\u00ed opat\u0159en\u00ed<\/p>\n<p>Je velmi d\u016fle\u017eit\u00e9 si uv\u011bdomit, \u017ee pr\u00e1ce s ultrazvukov\u00fdm za\u0159\u00edzen\u00edm m\u016f\u017ee p\u0159edstavovat bezpe\u010dnostn\u00ed rizika.  Nespr\u00e1vn\u00e9 pou\u017eit\u00ed m\u016f\u017ee v\u00e9st k po\u0161kozen\u00ed tk\u00e1n\u00ed.  Je proto nezbytn\u00e9 dodr\u017eovat bezpe\u010dnostn\u00ed pokyny a  pou\u017e\u00edvat za\u0159\u00edzen\u00ed pouze k povolen\u00fdm \u00fa\u010del\u016fm.  DIY ultrazvukov\u00e9 skenery by se nikdy nem\u011bly pou\u017e\u00edvat pro diagnostick\u00e9 \u00fa\u010dely bez dozoru l\u00e9ka\u0159e.<\/p>\n<p>Z\u00e1v\u011brem lze \u0159\u00edci, \u017ee konstrukce DIY ultrazvukov\u00e9ho skeneru je komplexn\u00ed a n\u00e1ro\u010dn\u00fd projekt vy\u017eaduj\u00edc\u00ed hlubok\u00e9 znalosti elektroniky, programov\u00e1n\u00ed a fyziky.  A\u010dkoliv je to v\u00fdzva,  \u00fasp\u011b\u0161n\u00e1 konstrukce p\u0159in\u00e1\u0161\u00ed fascinuj\u00edc\u00ed pohled do sv\u011bta medic\u00ednsk\u00e9ho zobrazov\u00e1n\u00ed a umo\u017e\u0148uje experimentovat s r\u016fzn\u00fdmi technikami a aplikacemi.  V\u017edy je nutn\u00e9 dodr\u017eovat bezpe\u010dnostn\u00ed opat\u0159en\u00ed a uv\u011bdomit si limity technologie.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ultrazvukov\u00e9 zobrazov\u00e1n\u00ed si v posledn\u00edch letech z\u00edsk\u00e1v\u00e1 st\u00e1le v\u011bt\u0161\u00ed popularitu nejen v profesion\u00e1ln\u00edch medic\u00ednsk\u00fdch za\u0159\u00edzen\u00edch, ale i v oblasti DIY (Do It Yourself) projekt\u016f. Mo\u017enost sestrojit si vlastn\u00ed ultrazvukov\u00fd skener, a\u010dkoliv n\u00e1ro\u010dn\u00e1, otev\u00edr\u00e1 fascinuj\u00edc\u00ed sv\u011bt medic\u00ednsk\u00e9ho zobrazov\u00e1n\u00ed a umo\u017e\u0148uje experimentovat s technikami a aplikacemi. Nicm\u00e9n\u011b je d\u016fle\u017eit\u00e9 si uv\u011bdomit, \u017ee konstrukce funk\u010dn\u00edho a bezpe\u010dn\u00e9ho za\u0159\u00edzen\u00ed<\/p>\n","protected":false},"author":1,"featured_media":26485,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6415],"tags":[],"class_list":["post-61560","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\/61560","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=61560"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/posts\/61560\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/media\/26485"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/media?parent=61560"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/categories?post=61560"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/tags?post=61560"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}