{"id":2649,"date":"2025-09-15T01:14:50","date_gmt":"2025-09-15T01:14:50","guid":{"rendered":"https:\/\/nbaem.com\/?p=2649"},"modified":"2025-09-17T08:31:55","modified_gmt":"2025-09-17T08:31:55","slug":"magnetic-materials-in-medical","status":"publish","type":"post","link":"https:\/\/nbaem.com\/vi\/magnetic-materials-in-medical\/","title":{"rendered":"V\u1eadt li\u1ec7u t\u1eeb trong Y h\u1ecdc"},"content":{"rendered":"<p>N\u1ebfu b\u1ea1n \u0111ang kh\u00e1m ph\u00e1 th\u1ebf gi\u1edbi c\u1ee7a <strong>v\u1eadt li\u1ec7u t\u1eeb trong h\u00ecnh \u1ea3nh y h\u1ecdc<\/strong>, b\u1ea1n c\u00f3 th\u1ec3 bi\u1ebft r\u00f5 t\u1ea7m quan tr\u1ecdng c\u1ee7a nh\u1eefng v\u1eadt li\u1ec7u n\u00e0y trong vi\u1ec7c cung c\u1ea5p c\u00e1c c\u00f4ng c\u1ee5 ch\u1ea9n \u0111o\u00e1n ti\u00ean ti\u1ebfn nh\u01b0 m\u00e1y MRI. Nh\u01b0ng ch\u00ednh x\u00e1c \u0111i\u1ec1u g\u00ec l\u00e0m cho c\u00e1c th\u00e0nh ph\u1ea7n t\u1eeb n\u00e0y tr\u1edf n\u00ean thi\u1ebft y\u1ebfu, v\u00e0 nh\u1eefng \u0111\u1ed5i m\u1edbi \u0111ang \u0111\u1ecbnh h\u00ecnh t\u01b0\u01a1ng lai c\u1ee7a h\u00ecnh \u1ea3nh y h\u1ecdc nh\u01b0 th\u1ebf n\u00e0o? Trong b\u00e0i vi\u1ebft n\u00e0y, ch\u00fang t\u00f4i s\u1ebd ph\u00e2n t\u00edch c\u00e1c lo\u1ea1i, \u0111\u1eb7c t\u00ednh v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a v\u1eadt li\u1ec7u t\u1eeb\u2014l\u00e0m s\u00e1ng t\u1ecf l\u00fd do t\u1ea1i sao ch\u00fang l\u00e0 x\u01b0\u01a1ng s\u1ed1ng c\u1ee7a h\u00ecnh \u1ea3nh ch\u00ednh x\u00e1c, \u0111\u00e1ng tin c\u1eady. Th\u00eam v\u00e0o \u0111\u00f3, b\u1ea1n s\u1ebd c\u00f3 c\u00e1i nh\u00ecn v\u1ec1 chuy\u00ean m\u00f4n c\u1ee7a NBAEM nh\u01b0 m\u1ed9t nh\u00e0 cung c\u1ea5p \u0111\u00e1ng tin c\u1eady \u0111\u1ee9ng \u0111\u1ea7u trong c\u00f4ng ngh\u1ec7 \u0111ang ph\u00e1t tri\u1ec3n n\u00e0y. H\u00e3y c\u00f9ng kh\u00e1m ph\u00e1 nh\u1eefng g\u00ec \u0111ang th\u00fac \u0111\u1ea9y cu\u1ed9c c\u00e1ch m\u1ea1ng t\u1eeb trong l\u0129nh v\u1ef1c ch\u0103m s\u00f3c s\u1ee9c kh\u1ecfe.<\/p>\n<h2>Nguy\u00ean l\u00fd c\u01a1 b\u1ea3n c\u1ee7a v\u1eadt li\u1ec7u t\u1eeb t\u00ednh<\/h2>\n<p>V\u1eadt li\u1ec7u t\u1eeb \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong h\u00ecnh \u1ea3nh y h\u1ecdc, n\u01a1i c\u00e1c \u0111\u1eb7c t\u00ednh ri\u00eang bi\u1ec7t c\u1ee7a ch\u00fang cho ph\u00e9p c\u00e1c c\u00f4ng ngh\u1ec7 ch\u1ea9n \u0111o\u00e1n ti\u00ean ti\u1ebfn. Nh\u1eefng v\u1eadt li\u1ec7u n\u00e0y \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i th\u00e0nh ba lo\u1ea1i ch\u00ednh d\u1ef1a tr\u00ean h\u00e0nh vi t\u1eeb c\u1ee7a ch\u00fang:<\/p>\n<ul>\n<li><strong>S\u1eaft t\u1eeb<\/strong>: B\u1ecb h\u00fat m\u1ea1nh v\u00e0o t\u1eeb tr\u01b0\u1eddng; v\u00ed d\u1ee5 bao g\u1ed3m s\u1eaft, cobalt v\u00e0 nickel. Nh\u1eefng v\u1eadt li\u1ec7u n\u00e0y gi\u1eef l\u1ea1i t\u1eeb t\u00ednh, l\u00e0m cho ch\u00fang c\u1ea7n thi\u1ebft cho nam ch\u00e2m v\u0129nh c\u1eedu trong c\u00e1c thi\u1ebft b\u1ecb h\u00ecnh \u1ea3nh.<\/li>\n<li><strong>V\u1eadt li\u1ec7u t\u1eeb thu\u1eadn<\/strong>: B\u1ecb h\u00fat y\u1ebfu v\u00e0o t\u1eeb tr\u01b0\u1eddng m\u00e0 kh\u00f4ng gi\u1eef l\u1ea1i t\u1eeb t\u00ednh. Ch\u00fang ph\u1ea3n \u1ee9ng t\u1ea1m th\u1eddi v\u1edbi t\u1eeb tr\u01b0\u1eddng nh\u01b0ng kh\u00f4ng tr\u1edf th\u00e0nh nam ch\u00e2m v\u0129nh c\u1eedu.<\/li>\n<li><strong>V\u1eadt li\u1ec7u t\u1eeb ch\u1ed1ng<\/strong>: B\u1ecb \u0111\u1ea9y nh\u1eb9 b\u1edfi t\u1eeb tr\u01b0\u1eddng; nh\u1eefng v\u1eadt li\u1ec7u n\u00e0y kh\u00f4ng c\u00f3 electron kh\u00f4ng gh\u00e9p \u0111\u00f4i, do \u0111\u00f3 hi\u1ec7u \u1ee9ng t\u1eeb c\u1ee7a ch\u00fang l\u00e0 t\u1ed1i thi\u1ec3u v\u00e0 ng\u01b0\u1ee3c l\u1ea1i v\u1edbi c\u00e1c tr\u01b0\u1eddng \u00e1p d\u1ee5ng.<\/li>\n<\/ul>\n<p>C\u00e1c \u0111\u1eb7c t\u00ednh t\u1eeb quan tr\u1ecdng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t h\u00ecnh \u1ea3nh y h\u1ecdc:<\/p>\n<ul>\n<li><strong>\u0110\u1ed9 th\u1ea5m t\u1eeb<\/strong> \u0111o l\u01b0\u1eddng kh\u1ea3 n\u0103ng ph\u1ea3n \u1ee9ng c\u1ee7a v\u1eadt li\u1ec7u v\u1edbi t\u1eeb tr\u01b0\u1eddng \u00e1p d\u1ee5ng, quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ecbnh h\u00ecnh c\u00e1c tr\u01b0\u1eddng trong c\u00e1c thi\u1ebft b\u1ecb nh\u01b0 m\u00e1y qu\u00e9t MRI.<\/li>\n<li><strong>Kh\u1ea3 n\u0103ng ch\u1ed1ng m\u1ea5t t\u1eeb<\/strong> X\u00e1c \u0111\u1ecbnh m\u1ee9c \u0111\u1ed9 ch\u1ed1ng m\u1ea5t t\u1eeb c\u1ee7a v\u1eadt li\u1ec7u, l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t cho s\u1ef1 \u1ed5n \u0111\u1ecbnh c\u1ee7a nam ch\u00e2m v\u0129nh c\u1eedu.<\/li>\n<li><strong>\u0110\u1ed9 t\u1eeb b\u00e3o h\u00f2a<\/strong> Ch\u1ec9 ra m\u1ee9c \u0111\u1ed9 t\u1eeb h\u00f3a t\u1ed1i \u0111a m\u00e0 v\u1eadt li\u1ec7u c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u01b0\u1eddng \u0111\u1ed9 c\u1ee7a c\u00e1c tr\u01b0\u1eddng t\u1eeb \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong h\u00ecnh \u1ea3nh.<\/li>\n<\/ul>\n<p>S\u1ef1 c\u00e2n b\u1eb1ng ph\u00f9 h\u1ee3p c\u1ee7a c\u00e1c \u0111\u1eb7c t\u00ednh n\u00e0y \u0111\u1ea3m b\u1ea3o v\u1eadt li\u1ec7u t\u1eeb cung c\u1ea5p c\u00e1c tr\u01b0\u1eddng \u1ed5n \u0111\u1ecbnh, m\u1ea1nh m\u1ebd v\u00e0 \u0111\u1ed3ng nh\u1ea5t, c\u1ea7n thi\u1ebft cho h\u00ecnh \u1ea3nh r\u00f5 n\u00e9t v\u00e0 ch\u00ednh x\u00e1c. V\u00ed d\u1ee5, trong c\u00e1c h\u1ec7 th\u1ed1ng MRI, c\u00e1c v\u1eadt li\u1ec7u s\u1eaft t\u1eeb c\u00f3 \u0111\u1ed9 b\u00e3o h\u00f2a t\u1eeb cao v\u00e0 \u0111\u1ed9 c\u01b0\u1ee1ng t\u1eeb th\u1ea5p gi\u00fap duy tr\u00ec c\u00e1c tr\u01b0\u1eddng t\u1eeb \u1ed5n \u0111\u1ecbnh, n\u00e2ng cao \u0111\u1ed9 ph\u00e2n gi\u1ea3i h\u00ecnh \u1ea3nh v\u00e0 an to\u00e0n cho b\u1ec7nh nh\u00e2n. Hi\u1ec3u r\u00f5 c\u00e1c nguy\u00ean t\u1eafc c\u01a1 b\u1ea3n n\u00e0y cho ph\u00e9p c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t nh\u01b0 NBAEM cung c\u1ea5p v\u1eadt li\u1ec7u ph\u00f9 h\u1ee3p \u0111\u1ec3 \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u kh\u1eaft khe c\u1ee7a c\u00f4ng ngh\u1ec7 h\u00ecnh \u1ea3nh y h\u1ecdc.<\/p>\n<h2>Vai tr\u00f2 c\u1ee7a v\u1eadt li\u1ec7u t\u1eeb trong c\u00e1c ph\u01b0\u01a1ng ph\u00e1p h\u00ecnh \u1ea3nh y h\u1ecdc ch\u00ednh<\/h2>\n<p>V\u1eadt li\u1ec7u t\u1eeb \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong nhi\u1ec1u c\u00f4ng ngh\u1ec7 h\u00ecnh \u1ea3nh y h\u1ecdc, \u0111\u1eb7c bi\u1ec7t l\u00e0 MRI (Ch\u1ee5p c\u1ed9ng h\u01b0\u1edfng t\u1eeb). C\u00e1c m\u00e1y MRI d\u1ef1a nhi\u1ec1u v\u00e0o <strong>nam ch\u00e2m v\u0129nh c\u1eedu<\/strong> v\u00e0 <strong>nam ch\u00e2m si\u00eau d\u1eabn<\/strong> \u0111\u1ec3 t\u1ea1o ra t\u1eeb tr\u01b0\u1eddng m\u1ea1nh, \u1ed5n \u0111\u1ecbnh c\u1ea7n thi\u1ebft cho h\u00ecnh \u1ea3nh r\u00f5 n\u00e9t. Thi\u1ebft k\u1ebf c\u1ee7a nh\u1eefng nam ch\u00e2m n\u00e0y r\u1ea5t quan tr\u1ecdng v\u00ec ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a \u1ea3nh ch\u1ee5p MRI ph\u1ee5 thu\u1ed9c v\u00e0o t\u1eeb tr\u01b0\u1eddng <strong>t\u00ednh \u0111\u1ed3ng nh\u1ea5t<\/strong> (m\u1ee9c \u0111\u1ed9 \u0111\u1ed3ng \u0111\u1ec1u c\u1ee7a t\u1eeb tr\u01b0\u1eddng) v\u00e0 <strong>t\u00ednh \u1ed5n \u0111\u1ecbnh<\/strong> theo th\u1eddi gian.<\/p>\n<p>Ngo\u00e0i nam ch\u00e2m ch\u00ednh, v\u1eadt li\u1ec7u t\u1eeb t\u00ednh r\u1ea5t c\u1ea7n thi\u1ebft trong c\u00e1c b\u1ed9 ph\u1eadn kh\u00e1c c\u1ee7a h\u1ec7 th\u1ed1ng MRI. <strong>Cu\u1ed9n d\u00e2y Gradient<\/strong>, gi\u00fap m\u00e3 h\u00f3a kh\u00f4ng gian c\u00e1c t\u00edn hi\u1ec7u MRI, ph\u1ee5 thu\u1ed9c v\u00e0o h\u1ee3p kim t\u1eeb t\u00ednh \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 c\u00f3 \u0111\u1ed9 nh\u1ea1y ch\u00ednh x\u00e1c. T\u01b0\u01a1ng t\u1ef1, <strong>C\u00e1c th\u00e0nh ph\u1ea7n RF (t\u1ea7n s\u1ed1 v\u00f4 tuy\u1ebfn)<\/strong> s\u1eed d\u1ee5ng v\u1eadt li\u1ec7u t\u1eeb t\u00ednh \u0111\u1ec3 truy\u1ec1n v\u00e0 nh\u1eadn t\u00edn hi\u1ec7u ch\u00ednh x\u00e1c m\u00e0 kh\u00f4ng b\u1ecb nhi\u1ec5u.<\/p>\n<p>Ngo\u00e0i MRI, v\u1eadt li\u1ec7u t\u1eeb t\u00ednh c\u0169ng l\u00e0 ch\u00eca kh\u00f3a trong c\u00e1c ph\u01b0\u01a1ng ph\u00e1p h\u00ecnh \u1ea3nh kh\u00e1c nh\u01b0 <strong>\u0110i\u1ec7n n\u00e3o t\u1eeb (MEG)<\/strong> v\u00e0 <strong>\u0110i\u1ec7n tim t\u1eeb (MCG)<\/strong>. C\u00e1c k\u1ef9 thu\u1eadt n\u00e0y s\u1eed d\u1ee5ng <strong>c\u1ea3m bi\u1ebfn t\u1eeb<\/strong> \u0111\u1ec3 \u0111o c\u00e1c t\u1eeb tr\u01b0\u1eddng nh\u1ecf \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1edfi ho\u1ea1t \u0111\u1ed9ng c\u1ee7a n\u00e3o ho\u1eb7c tim, cung c\u1ea5p d\u1eef li\u1ec7u ch\u1ea9n \u0111o\u00e1n quan tr\u1ecdng.<\/p>\n<p>C\u00e1c c\u00f4ng ngh\u1ec7 m\u1edbi n\u1ed5i nh\u01b0 <strong>Ch\u1ee5p \u1ea3nh h\u1ea1t t\u1eeb t\u00ednh (MPI)<\/strong> t\u1eadn d\u1ee5ng c\u00e1c h\u1ea1t nano t\u1eeb t\u00ednh \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1eb7c bi\u1ec7t. Nh\u1eefng h\u1ea1t nano n\u00e0y ho\u1ea1t \u0111\u1ed9ng nh\u01b0 ch\u1ea5t c\u1ea3n quang, c\u1ea3i thi\u1ec7n \u0111\u1ed9 r\u00f5 n\u00e9t c\u1ee7a h\u00ecnh \u1ea3nh v\u00e0 nh\u1eafm m\u1ee5c ti\u00eau v\u00e0o c\u00e1c m\u00f4 c\u1ee5 th\u1ec3, m\u1edf ra nh\u1eefng kh\u1ea3 n\u0103ng m\u1edbi th\u00fa v\u1ecb cho ch\u1ea9n \u0111o\u00e1n y t\u1ebf v\u00e0 theo d\u00f5i \u0111i\u1ec1u tr\u1ecb.<\/p>\n<h2>C\u00e1c lo\u1ea1i v\u1eadt li\u1ec7u t\u1eeb th\u00f4ng d\u1ee5ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng<\/h2>\n<p><img decoding=\"async\" src=\"https:\/\/nbaem.com\/wp-content\/uploads\/2025\/09\/Magnetic_Materials_Types_and_Biomedical_Use_jfzmr3.webp\" alt=\"C\u00e1c lo\u1ea1i V\u1eadt li\u1ec7u T\u1eeb v\u00e0 \u1ee8ng d\u1ee5ng Y sinh\" \/><\/p>\n<p>Trong ch\u1ea9n \u0111o\u00e1n h\u00ecnh \u1ea3nh y t\u1ebf, c\u00e1c v\u1eadt li\u1ec7u t\u1eeb t\u00ednh kh\u00e1c nhau ph\u1ee5c v\u1ee5 m\u1ed9t m\u1ee5c \u0111\u00edch duy nh\u1ea5t, t\u00f9y thu\u1ed9c v\u00e0o \u1ee9ng d\u1ee5ng.<\/p>\n<h3>V\u1eadt li\u1ec7u t\u1eeb m\u1ec1m<\/h3>\n<p>V\u1eadt li\u1ec7u t\u1eeb m\u1ec1m nh\u01b0 th\u00e9p silic v\u00e0 h\u1ee3p kim v\u00f4 \u0111\u1ecbnh h\u00ecnh r\u1ea5t c\u1ea7n thi\u1ebft \u1edf nh\u1eefng n\u01a1i c\u1ea7n t\u1eeb h\u00f3a v\u00e0 kh\u1eed t\u1eeb d\u1ec5 d\u00e0ng. Ch\u00fang th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong:<\/p>\n<ul>\n<li><strong>Cu\u1ed9n d\u00e2y Gradient<\/strong> v\u00e0 <strong>C\u00e1c th\u00e0nh ph\u1ea7n RF<\/strong> trong m\u00e1y MRI<\/li>\n<li>N\u00e2ng cao ki\u1ec3m so\u00e1t t\u1eeb tr\u01b0\u1eddng \u0111\u1ec3 c\u1ea3i thi\u1ec7n ch\u1ea5t l\u01b0\u1ee3ng h\u00ecnh \u1ea3nh<\/li>\n<li>Gi\u1ea3m t\u1ed5n th\u1ea5t n\u0103ng l\u01b0\u1ee3ng nh\u1edd v\u00e0o \u0111\u1ed9 c\u1ee9ng th\u1ea5p v\u00e0 \u0111\u1ed9 th\u1ea5m t\u1eeb cao c\u1ee7a ch\u00fang<\/li>\n<\/ul>\n<p>Nh\u1eefng v\u1eadt li\u1ec7u n\u00e0y gi\u00fap c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t c\u1ee7a c\u00e1c b\u1ed9 ph\u1eadn t\u1eeb tr\u01b0\u1eddng di \u0111\u1ed9ng m\u00e0 kh\u00f4ng gi\u1eef l\u1ea1i t\u1eeb t\u00ednh c\u1ee7a ch\u00ednh ch\u00fang.<\/p>\n<h3>V\u1eadt li\u1ec7u t\u1eeb c\u1ee9ng<\/h3>\n<p>C\u00e1c v\u1eadt li\u1ec7u t\u1eeb c\u1ee9ng l\u00e0 nam ch\u00e2m v\u0129nh c\u1eedu gi\u1eef \u0111\u01b0\u1ee3c t\u1eeb tr\u01b0\u1eddng c\u1ee7a ch\u00fang. C\u00e1c lo\u1ea1i ph\u1ed5 bi\u1ebfn nh\u1ea5t \u1edf \u0111\u00e2y l\u00e0:<\/p>\n<ul>\n<li><strong>Neodymium-Iron-Boron (NdFeB)<\/strong> nam ch\u00e2m<\/li>\n<li><strong>Samari-Coban (SmCo)<\/strong> nam ch\u00e2m<\/li>\n<\/ul>\n<p>Ch\u00fang \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c t\u1ea1o ra c\u00e1c tr\u01b0\u1eddng t\u1eeb m\u1ea1nh, \u1ed5n \u0111\u1ecbnh \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c nam ch\u00e2m MRI. \u0110\u1ed9 b\u00e3o h\u00f2a t\u1eeb cao v\u00e0 \u0111\u1ed9 c\u1ee9ng c\u1ee7a ch\u00fang \u0111\u1ea3m b\u1ea3o c\u01b0\u1eddng \u0111\u1ed9 tr\u01b0\u1eddng \u1ed5n \u0111\u1ecbnh theo th\u1eddi gian, \u0111i\u1ec1u n\u00e0y r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 h\u00ecnh \u1ea3nh \u0111\u00e1ng tin c\u1eady.<\/p>\n<h3>H\u1ea1t nano t\u1eeb<\/h3>\n<p>C\u00e1c h\u1ea1t nano t\u1eeb \u0111ang ng\u00e0y c\u00e0ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng nh\u01b0 c\u00e1c ch\u1ea5t t\u01b0\u01a1ng ph\u1ea3n trong h\u00ecnh \u1ea3nh y h\u1ecdc. Nh\u1eefng l\u1ee3i \u00edch c\u1ee7a ch\u00fang bao g\u1ed3m:<\/p>\n<ul>\n<li>C\u1ea3i thi\u1ec7n \u0111\u1ed9 t\u01b0\u01a1ng ph\u1ea3n trong qu\u00e9t MRI<\/li>\n<li>Ti\u1ec1m n\u0103ng cho vi\u1ec7c v\u1eadn chuy\u1ec3n thu\u1ed1c m\u1ee5c ti\u00eau v\u00e0 h\u00ecnh \u1ea3nh<\/li>\n<li>Ph\u1ea3i t\u01b0\u01a1ng th\u00edch sinh h\u1ecdc v\u00e0 an to\u00e0n cho ng\u01b0\u1eddi s\u1eed d\u1ee5ng<\/li>\n<\/ul>\n<p>C\u00e1c v\u1eadt li\u1ec7u nh\u01b0 h\u1ea1t nano oxit s\u1eaft \u0111\u01b0\u1ee3c \u01b0u ti\u00ean v\u00ec ch\u00fang c\u00e2n b\u1eb1ng ph\u1ea3n \u1ee9ng t\u1eeb v\u1edbi \u0111\u1ed9c t\u00ednh t\u1ed1i thi\u1ec3u. \u0110\u1ea3m b\u1ea3o t\u00ednh t\u01b0\u01a1ng th\u00edch sinh h\u1ecdc v\u00e0 kh\u1ea3 n\u0103ng lo\u1ea1i b\u1ecf an to\u00e0n kh\u1ecfi c\u01a1 th\u1ec3 l\u00e0 ch\u00eca kh\u00f3a khi ph\u00e1t tri\u1ec3n c\u00e1c h\u1ea1t n\u00e0y.<\/p>\n<p>B\u1eb1ng c\u00e1ch ch\u1ecdn v\u1eadt li\u1ec7u t\u1eeb ph\u00f9 h\u1ee3p\u2014m\u1ec1m, c\u1ee9ng ho\u1eb7c k\u00edch th\u01b0\u1edbc nano\u2014ch\u00fang ta c\u00f3 th\u1ec3 t\u1ed1i \u01b0u h\u00f3a h\u1ec7 th\u1ed1ng h\u00ecnh \u1ea3nh y h\u1ecdc \u0111\u1ec3 \u0111\u1ea1t \u0111\u1ed9 ch\u00ednh x\u00e1c, an to\u00e0n v\u00e0 tho\u1ea3i m\u00e1i cho b\u1ec7nh nh\u00e2n.<\/p>\n<h2>C\u00e1c y\u1ebfu t\u1ed1 s\u1ea3n xu\u1ea5t v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng<\/h2>\n<p>&nbsp;<\/p>\n<p>S\u1ea3n xu\u1ea5t v\u1eadt li\u1ec7u t\u1eeb cho h\u00ecnh \u1ea3nh y h\u1ecdc \u0111\u00f2i h\u1ecfi \u0111\u1ed9 tinh khi\u1ebft cao v\u00e0 t\u00ednh ch\u1ea5t t\u1eeb \u1ed5n \u0111\u1ecbnh. Ngay c\u1ea3 nh\u1eefng bi\u1ebfn \u0111\u1ed5i nh\u1ecf c\u0169ng c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb h\u00ecnh \u1ea3nh nh\u01b0 m\u00e1y MRI ho\u1eb7c c\u1ea3m bi\u1ebfn t\u1eeb, khi\u1ebfn ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng tr\u1edf n\u00ean thi\u1ebft y\u1ebfu. C\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t ph\u1ea3i \u0111\u1ea3m b\u1ea3o r\u1eb1ng v\u1eadt li\u1ec7u \u0111\u00e1p \u1ee9ng c\u00e1c ti\u00eau chu\u1ea9n nghi\u00eam ng\u1eb7t \u0111\u1ec3 duy tr\u00ec \u0111\u1ed9 th\u1ea5m t\u1eeb, \u0111\u1ed9 c\u1ee9ng v\u00e0 \u0111\u1ed9 b\u00e3o h\u00f2a t\u1eeb \u1ed5n \u0111\u1ecbnh trong to\u00e0n b\u1ed9 l\u00f4 s\u1ea3n ph\u1ea9m.<\/p>\n<p>M\u1edf r\u1ed9ng quy m\u00f4 s\u1ea3n xu\u1ea5t v\u1eadt li\u1ec7u t\u1eeb c\u1ea5p y t\u1ebf \u0111\u1eb7t ra nh\u1eefng th\u00e1ch th\u1ee9c \u0111\u1eb7c bi\u1ec7t. Duy tr\u00ec ki\u1ec3m so\u00e1t ch\u00ednh x\u00e1c v\u1ec1 th\u00e0nh ph\u1ea7n trong khi t\u0103ng s\u1ed1 l\u01b0\u1ee3ng \u0111\u00f2i h\u1ecfi quy tr\u00ecnh s\u1ea3n xu\u1ea5t ti\u00ean ti\u1ebfn v\u00e0 ki\u1ec3m tra k\u1ef9 l\u01b0\u1ee1ng. B\u1ea5t k\u1ef3 \u00f4 nhi\u1ec5m ho\u1eb7c sai l\u1ec7ch n\u00e0o c\u0169ng c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m an to\u00e0n v\u00e0 hi\u1ec7u qu\u1ea3 c\u1ee7a s\u1ea3n ph\u1ea9m cu\u1ed1i c\u00f9ng.<\/p>\n<p>Tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n quy \u0111\u1ecbnh l\u00e0 r\u1ea5t quan tr\u1ecdng. C\u00e1c v\u1eadt li\u1ec7u t\u1eeb y t\u1ebf ph\u1ea3i ph\u00f9 h\u1ee3p v\u1edbi <strong>H\u01b0\u1edbng d\u1eabn c\u1ee7a FDA<\/strong> v\u00e0 c\u00e1c ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf nh\u01b0 <strong>ISO 13485<\/strong>, t\u1eadp trung v\u00e0o h\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd ch\u1ea5t l\u01b0\u1ee3ng cho thi\u1ebft b\u1ecb y t\u1ebf. Nh\u1eefng ch\u1ee9ng nh\u1eadn n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng v\u1eadt li\u1ec7u an to\u00e0n, hi\u1ec7u qu\u1ea3 v\u00e0 nh\u1ea5t qu\u00e1n cho s\u1eed d\u1ee5ng l\u00e2m s\u00e0ng.<\/p>\n<p>\u0110\u1ec3 bi\u1ebft th\u00eam chi ti\u1ebft v\u1ec1 c\u00e1c lo\u1ea1i v\u1eadt li\u1ec7u t\u1eeb t\u00ednh, h\u00e3y xem trang c\u1ee7a ch\u00fang t\u00f4i v\u1ec1 <a href=\"https:\/\/nbaem.com\/vi\/soft-magnetic-materials-vs-hard-magnetic-materials\/\" target=\"_blank\" rel=\"noopener\">v\u1eadt li\u1ec7u t\u1eeb m\u1ec1m so v\u1edbi v\u1eadt li\u1ec7u t\u1eeb c\u1ee9ng<\/a>.<\/p>\n<h2>C\u00e1c \u0111\u1ed5i m\u1edbi v\u00e0 xu h\u01b0\u1edbng trong v\u1eadt li\u1ec7u t\u1eeb cho h\u00ecnh \u1ea3nh y h\u1ecdc<\/h2>\n<p>L\u0129nh v\u1ef1c h\u00ecnh \u1ea3nh y h\u1ecdc \u0111ang ph\u00e1t tri\u1ec3n nhanh ch\u00f3ng, v\u00e0 v\u1eadt li\u1ec7u t\u1eeb t\u00ednh n\u1eb1m ngay trung t\u00e2m c\u1ee7a nh\u1eefng \u0111\u1ed5i m\u1edbi n\u00e0y. M\u1ed9t b\u01b0\u1edbc \u0111\u1ed9t ph\u00e1 l\u1edbn l\u00e0 trong c\u00e1c nam ch\u00e2m v\u0129nh c\u1eedu hi\u1ec7u su\u1ea5t cao. Nh\u1eefng nam ch\u00e2m n\u00e0y, \u0111\u1eb7c bi\u1ec7t l\u00e0 nh\u1eefng l\u00e0m t\u1eeb c\u00e1c nguy\u00ean t\u1ed1 \u0111\u1ea5t hi\u1ebfm nh\u01b0 NdFeB v\u00e0 SmCo, ng\u00e0y c\u00e0ng m\u1ea1nh m\u1ebd v\u00e0 hi\u1ec7u qu\u1ea3 h\u01a1n. \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 c\u00e1c m\u00e1y MRI c\u00f3 th\u1ec3 m\u1ea1nh h\u01a1n trong khi c\u0169ng nh\u1ecf g\u1ecdn h\u01a1n v\u00e0 ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng h\u01a1n, \u0111i\u1ec1u n\u00e0y mang l\u1ea1i l\u1ee3i \u00edch tr\u1ef1c ti\u1ebfp cho c\u00e1c b\u1ec7nh vi\u1ec7n v\u00e0 ph\u00f2ng kh\u00e1m t\u1ea1i Vi\u1ec7t Nam.<\/p>\n<p>M\u1ed9t xu h\u01b0\u1edbng th\u00fa v\u1ecb kh\u00e1c l\u00e0 s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a c\u00e1c h\u1ea1t nano t\u1eeb t\u00ednh t\u01b0\u01a1ng th\u00edch sinh h\u1ecdc. Nh\u1eefng h\u1ea1t nh\u1ecf n\u00e0y c\u1ea3i thi\u1ec7n h\u00ecnh \u1ea3nh b\u1eb1ng c\u00e1ch t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 t\u01b0\u01a1ng ph\u1ea3n trong c\u00e1c qu\u00e9t m\u00e0 kh\u00f4ng g\u00e2y h\u1ea1i cho b\u1ec7nh nh\u00e2n. Ch\u00fang \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 an to\u00e0n b\u00ean trong c\u01a1 th\u1ec3, l\u00e0m cho ch\u00fang tr\u1edf th\u00e0nh c\u00f4ng c\u1ee5 ch\u1ea9n \u0111o\u00e1n ti\u00ean ti\u1ebfn nh\u01b0 H\u00ecnh \u1ea3nh H\u1ea1t t\u1eeb (MPI). \u0110\u00e2y l\u00e0 m\u1ed9t l\u0129nh v\u1ef1c \u0111ang ph\u00e1t tri\u1ec3n v\u1edbi ti\u1ec1m n\u0103ng l\u1edbn cho c\u00e1c ph\u01b0\u01a1ng ph\u00e1p h\u00ecnh \u1ea3nh r\u00f5 r\u00e0ng, nhanh h\u01a1n v\u00e0 an to\u00e0n h\u01a1n.<\/p>\n<p>Tr\u00ean m\u1eb7t tr\u1eadn nghi\u00ean c\u1ee9u, c\u00e1c v\u1eadt li\u1ec7u t\u1eeb t\u00ednh c\u1ea5u tr\u00fac nano \u0111ang thu h\u00fat s\u1ef1 ch\u00fa \u00fd. Nh\u1eefng v\u1eadt li\u1ec7u n\u00e0y c\u00f3 c\u00e1c \u0111\u1eb7c t\u00ednh t\u1eeb t\u00ednh \u0111\u1ed9c \u0111\u00e1o m\u00e0 c\u00e1c v\u1eadt li\u1ec7u kh\u1ed1i kh\u00f4ng c\u00f3, ch\u1eb3ng h\u1ea1n nh\u01b0 ki\u1ec3m so\u00e1t t\u1ed1t h\u01a1n c\u00e1c tr\u01b0\u1eddng t\u1eeb \u1edf quy m\u00f4 nano. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn c\u00e1c k\u1ef9 thu\u1eadt h\u00ecnh \u1ea3nh m\u1edbi ho\u1eb7c c\u1ea3i ti\u1ebfn c\u00e1c k\u1ef9 thu\u1eadt hi\u1ec7n c\u00f3, m\u1edf r\u1ed9ng gi\u1edbi h\u1ea1n nh\u1eefng g\u00ec b\u00e1c s\u0129 c\u00f3 th\u1ec3 nh\u00ecn th\u1ea5y b\u00ean trong c\u01a1 th\u1ec3.<\/p>\n<p>T\u00f3m l\u1ea1i, nh\u1eefng xu h\u01b0\u1edbng n\u00e0y \u0111ang \u0111\u1ecbnh h\u00ecnh t\u01b0\u01a1ng lai c\u1ee7a h\u00ecnh \u1ea3nh y h\u1ecdc t\u1ea1i Vi\u1ec7t Nam, t\u1eadp trung v\u00e0o c\u00e1c nam ch\u00e2m m\u1ea1nh h\u01a1n, c\u00e1c h\u1ea1t nano an to\u00e0n h\u01a1n v\u00e0 c\u00e1c v\u1eadt li\u1ec7u nano ti\u00ean ti\u1ebfn \u0111\u1ec3 cung c\u1ea5p c\u00e1c c\u00f4ng c\u1ee5 ch\u1ea9n \u0111o\u00e1n r\u00f5 r\u00e0ng, nhanh h\u01a1n v\u00e0 an to\u00e0n h\u01a1n.<\/p>\n<h2>C\u00e1c y\u1ebfu t\u1ed1 an to\u00e0n v\u00e0 quy \u0111\u1ecbnh ph\u00e1p lu\u1eadt<\/h2>\n<p>Khi n\u00f3i \u0111\u1ebfn v\u1eadt li\u1ec7u t\u1eeb t\u00ednh trong h\u00ecnh \u1ea3nh y h\u1ecdc, an to\u00e0n l\u00e0 \u01b0u ti\u00ean h\u00e0ng \u0111\u1ea7u. C\u00e1c b\u1ec7nh vi\u1ec7n v\u00e0 ph\u00f2ng kh\u00e1m tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n an to\u00e0n nghi\u00eam ng\u1eb7t \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c v\u1eadt li\u1ec7u n\u00e0y kh\u00f4ng g\u00e2y r\u1ee7i ro cho b\u1ec7nh nh\u00e2n ho\u1eb7c nh\u00e2n vi\u00ean. C\u00e1c tr\u01b0\u1eddng t\u1eeb ph\u1ea3i \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t \u0111\u1ec3 tr\u00e1nh g\u00e2y h\u1ea1i ho\u1eb7c t\u01b0\u01a1ng t\u00e1c b\u1ea5t ng\u1edd v\u1edbi c\u00e1c c\u1ea5y gh\u00e9p ho\u1eb7c thi\u1ebft b\u1ecb kh\u00e1c.<\/p>\n<p><strong>C\u00e1c ti\u00eau chu\u1ea9n an to\u00e0n ch\u00ednh bao g\u1ed3m:<\/strong><\/p>\n<ul>\n<li>Gi\u1edbi h\u1ea1n c\u01b0\u1eddng \u0111\u1ed9 tr\u01b0\u1eddng t\u1eeb \u0111\u1ec3 b\u1ea3o v\u1ec7 s\u1ee9c kh\u1ecfe con ng\u01b0\u1eddi<\/li>\n<li>Quy \u0111\u1ecbnh v\u1ec1 can thi\u1ec7p \u0111i\u1ec7n t\u1eeb (EMI) \u0111\u1ec3 tr\u00e1nh l\u00e0m gi\u00e1n \u0111o\u1ea1n c\u00e1c thi\u1ebft b\u1ecb y t\u1ebf kh\u00e1c<\/li>\n<li>Ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng v\u1eadt li\u1ec7u nghi\u00eam ng\u1eb7t \u0111\u1ec3 ng\u0103n ng\u1eeba \u00f4 nhi\u1ec5m v\u00e0 \u0111\u1ea3m b\u1ea3o t\u00ednh t\u01b0\u01a1ng th\u00edch sinh h\u1ecdc<\/li>\n<\/ul>\n<p>S\u1ef1 can thi\u1ec7p v\u00e0 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t th\u00e1ch th\u1ee9c th\u1ef1c s\u1ef1. C\u00e1c v\u1eadt li\u1ec7u t\u1eeb t\u00ednh s\u1eed d\u1ee5ng trong MRI, v\u00ed d\u1ee5, ph\u1ea3i \u0111\u01b0\u1ee3c qu\u1ea3n l\u00fd c\u1ea9n th\u1eadn \u0111\u1ec3 kh\u00f4ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u00e1c thi\u1ebft b\u1ecb l\u00e2n c\u1eadn nh\u01b0 m\u00e1y t\u1ea1o nh\u1ecbp tim ho\u1eb7c h\u1ec7 th\u1ed1ng theo d\u00f5i. Vi\u1ec7c che ch\u1eafn v\u00e0 thi\u1ebft k\u1ebf ch\u00ednh x\u00e1c gi\u00fap gi\u1ea3m thi\u1ec3u c\u00e1c v\u1ea5n \u0111\u1ec1 n\u00e0y.<\/p>\n<p>\u1ea2nh h\u01b0\u1edfng m\u00f4i tr\u01b0\u1eddng c\u0169ng \u0111ang \u0111\u01b0\u1ee3c quan t\u00e2m. C\u00e1c c\u01a1 s\u1edf y t\u1ebf \u0111\u01b0\u1ee3c khuy\u1ebfn kh\u00edch s\u1eed d\u1ee5ng c\u00e1c v\u1eadt li\u1ec7u v\u00e0 nam ch\u00e2m c\u00f3 th\u1ec3 t\u00e1i ch\u1ebf ho\u1eb7c c\u00f3 d\u1ea5u ch\u00e2n m\u00f4i tr\u01b0\u1eddng th\u1ea5p h\u01a1n. Th\u00eam v\u00e0o \u0111\u00f3, an to\u00e0n cho b\u1ec7nh nh\u00e2n c\u00f3 ngh\u0129a l\u00e0 s\u1eed d\u1ee5ng c\u00e1c h\u1ea1t nano t\u1eeb t\u00ednh v\u00e0 h\u1ee3p kim t\u01b0\u01a1ng th\u00edch sinh h\u1ecdc kh\u00f4ng g\u00e2y ph\u1ea3n \u1ee9ng d\u1ecb \u1ee9ng ho\u1eb7c \u0111\u1ed9c t\u1ed1.<\/p>\n<p>Gi\u1eef c\u00e1c kh\u00eda c\u1ea1nh an to\u00e0n v\u00e0 quy \u0111\u1ecbnh n\u00e0y trong t\u1ea7m ki\u1ec3m so\u00e1t \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng \u0111\u00e1ng tin c\u1eady, su\u00f4n s\u1ebb trong m\u00f4i tr\u01b0\u1eddng h\u00ecnh \u1ea3nh y h\u1ecdc tr\u00ean to\u00e0n qu\u1ed1c.<\/p>","protected":false},"excerpt":{"rendered":"<p>Kh\u00e1m ph\u00e1 c\u00e1c v\u1eadt li\u1ec7u t\u1eeb quan tr\u1ecdng trong h\u00ecnh \u1ea3nh y h\u1ecdc bao g\u1ed3m nam ch\u00e2m MRI v\u00e0 h\u1ea1t nano v\u1edbi nh\u1eefng hi\u1ec3u bi\u1ebft t\u1eeb c\u00e1c gi\u1ea3i ph\u00e1p cung \u1ee9ng chuy\u00ean nghi\u1ec7p c\u1ee7a NBAEM.<\/p>","protected":false},"author":1,"featured_media":2391,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_mi_skip_tracking":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-2649","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"jetpack_featured_media_url":"https:\/\/nbaem.com\/wp-content\/uploads\/2025\/09\/mri-magnetic-resonance-imaging-machine-epitomizing-role-cutting-edge-medical-technology-healthcare-critical-291606166.jpg","_links":{"self":[{"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/posts\/2649","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/comments?post=2649"}],"version-history":[{"count":2,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/posts\/2649\/revisions"}],"predecessor-version":[{"id":2828,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/posts\/2649\/revisions\/2828"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/media\/2391"}],"wp:attachment":[{"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/media?parent=2649"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/categories?post=2649"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/tags?post=2649"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}