{"id":30516,"date":"2023-05-03T15:08:03","date_gmt":"2023-05-03T08:08:03","guid":{"rendered":"http:\/\/noithathoaphat.in\/ctv\/?p=30516"},"modified":"2023-05-03T15:08:03","modified_gmt":"2023-05-03T08:08:03","slug":"sieu-am-cua-ro-dong-tinh-mach","status":"publish","type":"post","link":"http:\/\/noithathoaphat.in\/ctv\/index.php\/2023\/05\/03\/sieu-am-cua-ro-dong-tinh-mach\/","title":{"rendered":"Si\u00eau \u00e2m c\u1ee7a r\u00f2 \u0111\u1ed9ng-t\u0129nh m\u1ea1ch"},"content":{"rendered":"

R\u00f2 \u0111\u1ed9ng – t\u0129nh m\u1ea1ch<\/a> l\u00e0 t\u00ecnh tr\u1ea1ng th\u00f4ng th\u01b0\u01a1ng gi\u1eefa \u0111\u1ed9ng m\u1ea1ch v\u00e0 t\u0129nh m\u1ea1ch, ngh\u0129a l\u00e0 n\u1ed1i th\u00f4ng gi\u1eefa n\u01a1i c\u00f3 \u00e1p l\u1ef1c cao sang n\u01a1i c\u00f3 \u00e1p l\u1ef1c th\u1ea5p, do \u0111\u00f3 s\u1ebd t\u1ea1o ra s\u1ef1 ch\u00eanh \u00e1p l\u1edbn.Si\u00eau \u00e2m Doppler l\u00e0 th\u0103m d\u00f2 c\u1eadn l\u00e2m s\u00e0ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t trong ch\u1ea9n \u0111o\u00e1n v\u00e0 \u0111i\u1ec1u tr\u1ecb c\u00e1c b\u1ec7nh l\u00fd m\u1ea1ch m\u00e1u.<\/strong><\/p>\n

1. T\u1ed5ng quan<\/h2>\n

Si\u00eau \u00e2m Doppler l\u00e0 th\u0103m d\u00f2 c\u1eadn l\u00e2m s\u00e0ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t trong ch\u1ea9n \u0111o\u00e1n v\u00e0 \u0111i\u1ec1u tr\u1ecb c\u00e1c b\u1ec7nh l\u00fd m\u1ea1ch m\u00e1u. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y cho ph\u00e9p ph\u00e2n t\u00edch v\u1ec1 gi\u1ea3i ph\u1eabu c\u0169ng nh\u01b0 huy\u1ebft \u0111\u1ed9ng c\u1ee7a t\u1ed5n th\u01b0\u01a1ng, g\u00f3p ph\u1ea7n ph\u00e2n lo\u1ea1i v\u00e0 x\u00e1c \u0111\u1ecbnh m\u1ee9c \u0111\u1ed9 n\u1eb7ng c\u1ee7a b\u1ec7nh l\u00fd.<\/p>\n

2. H\u00ecnh \u1ea3nh si\u00eau \u00e2m \u0111\u1ed9ng m\u1ea1ch b\u00ecnh th\u01b0\u1eddng<\/strong><\/h2>\n

Si\u00eau \u00e2m 2D <\/strong>: \u0110\u1ed9ng m\u1ea1ch \u0111\u01b0\u1ee3c th\u0103m d\u00f2 c\u00f3 d\u1ea1ng hai \u0111\u01b0\u1eddng th\u1eb3ng song song nhau, \u0111\u1eadp theo nh\u1ecbp tim. Th\u00e0nh \u0111\u1ed9ng m\u1ea1ch \u0111\u1ec1u, nh\u1eb5n, bao g\u1ed3m ba l\u1edbp \u0111i t\u1eeb ph\u00eda trong l\u00f2ng \u0111\u1ed9ng m\u1ea1ch ra: (1) \u0110\u01b0\u1eddng trong c\u00f9ng m\u1ecbn, m\u1ea3nh, \u0111\u1eadm \u00e2m, t\u01b0\u01a1ng \u1ee9ng v\u1edbi ph\u1ea3n h\u1ed3i c\u1ee7a s\u00f3ng si\u00eau \u00e2m l\u00ean b\u1ec1 m\u1eb7t n\u1ed9i m\u1ea1c m\u1ea1ch m\u00e1u. (2) \u0110\u01b0\u1eddng \u1edf gi\u1eefa gi\u1ea3m \u00e2m, t\u01b0\u01a1ng \u1ee9ng v\u1edbi b\u1ec1 d\u00e0y l\u1edbp n\u1ed9i – trung m\u1ea1c. (3) \u0110\u01b0\u1eddng ngo\u00e0i c\u00f9ng kh\u00e1 d\u00e0y, \u0111\u1eadm \u00e2m h\u01a1n l\u1edbp trong, t\u01b0\u01a1ng \u1ee9ng v\u1edbi l\u1edbp ngo\u1ea1i m\u1ea1c.<\/p>\n

Si\u00eau \u00e2m Doppler m\u00e0u <\/strong>: Cho th\u00f4ng tin v\u1ec1 h\u01b0\u1edbng d\u00f2ng ch\u1ea3y v\u00e0 gi\u00e1 tr\u1ecb trung b\u00ecnh v\u1eadn t\u1ed1c d\u00f2ng ch\u1ea3y, h\u00ecnh \u1ea3nh m\u00e0u c\u00f3 s\u1ef1 bi\u1ebfn thi\u00ean v\u1ec1 d\u00f2ng ch\u1ea3y theo nh\u1ecbp \u0111\u1eadp.<\/p>\n

Si\u00eau \u00e2m Doppler xung <\/strong>: D\u1ef1a v\u00e0 o h\u00ecnh d\u1ea1ng, ph\u1ed5 Doppler xung \u0111\u01b0\u1ee3c chia l\u00e0m 3 lo\u1ea1i ch\u00ednh: D\u1ea1ng ph\u1ed5 Doppler c\u00f3 \u0111\u1ed9 \u0111\u1eadp cao, trung b\u00ecnh v\u00e0 th\u1ea5p t\u01b0\u01a1ng \u1ee9ng v\u1edbi s\u1ee9c c\u1ea3n ngo\u1ea1i vi c\u1ee7a v\u00f9ng m\u00f4 m\u00e0 \u0111\u1ed9ng m\u1ea1ch chi ph\u1ed1i.<\/p>\n

D\u1ea1ng ph\u1ed5 Doppler c\u00f3 \u0111\u1ed9 \u0111\u1eadp cao<\/u>: <\/em>C\u00e1c \u0111\u1ed9ng m\u1ea1ch c\u00f3 d\u1ea1ng ph\u1ed5 Doppler c\u00f3 \u0111\u1ed9 \u0111\u1eadp cao l\u00e0: \u0110 \u1ed9ng m\u1ea1ch chi d\u01b0\u1edbi, \u0111\u1ed9ng m\u1ea1ch chi tr\u00ean, \u0111\u1ed9ng m\u1ea1ch ch\u1ee7 b\u1ee5ng. H\u00ecnh \u1ea3nh ba pha \u0111\u1eb7c tr\u01b0ng: (1) M\u1ed9t \u0111\u1ec9nh t\u00e2m thu n\u00e9t v\u00e0 h\u1eb9p, bao g\u1ed3m th\u00e0nh ph\u1ea7n t\u00e2m thu d\u1ed1c l\u00ean v\u00e0 th\u00e0nh ph\u1ea7n cu\u1ed1i t\u00e2m thu d\u1ed1c xu\u1ed1ng nhanh. (2) M\u1ed9t ph\u1ed5 \u00e2m \u0111\u1ea7u t\u00e2m tr\u01b0\u01a1ng, ph\u1ea3n \u00e1nh s\u1ee9c c\u1ea3n ngo\u1ea1i vi l\u1edbn. (3) M\u1ed9t s\u00f3ng d\u01b0\u01a1ng ph\u1ea3n h\u1ed3i, kh\u00f4ng h\u1eb1ng \u0111\u1ecbnh, v\u1edbi m\u1ed9t v\u00e0i dao \u0111\u1ed9ng ph\u00eda sau, ph\u1ea3n \u00e1nh s\u1ee9c \u0111\u00e0n h\u1ed3i t\u1ed1t c\u1ee7a \u0111\u1ed9ng m\u1ea1ch (\u1edf ng\u01b0\u1eddi tr\u1ebb).<\/p>\n

D\u1ea1ng ph\u1ed5 Doppler c\u00f3 \u0111\u1ed9 \u0111\u1eadp th\u1ea5p<\/u>: <\/em>G\u1eb7p \u1edf c\u00e1c \u0111\u1ed9ng m\u1ea1ch nu\u00f4i t\u1ea1ng (\u0111\u1ed9ng m\u1ea1ch th\u1eadn, \u0111\u1ed9ng m\u1ea1ch l\u00e1ch, \u0111\u1ed9ng m\u1ea1ch gan, \u0111\u1ed9ng m\u1ea1ch m\u1ea1c treo tr\u00e0ng tr\u00ean \u1edf tr\u1ea1ng th\u00e1i no), \u0111\u1ed9ng m\u1ea1ch c\u1ea3nh trong v\u00e0 c\u00e1c \u0111\u1ed9ng m\u1ea1ch n\u00e3o, c\u00e1c \u0111\u1ed9ng m\u1ea1ch chi ngay sau tr\u1ea1ng th\u00e1i v\u1eadn \u0111\u1ed9ng. Ph\u1ed5 Doppler c\u00f3 \u0111\u1ec9nh t\u00e2m thu kh\u00f4ng cao, tr\u00f2n, ch\u00e2n r\u1ed9ng, pha t\u00e2m tr\u01b0\u01a1ng c\u00f9ng chi\u1ec1u v\u1edbi t\u00e2m thu.<\/p>\n

D\u1ea1ng ph\u1ed5 Doppler c\u00f3 \u0111\u1ed9 \u0111\u1eadp trung b\u00ecnh<\/u><\/em>: <\/em>G\u1eb7p \u1edf \u0111\u1ed9ng m\u1ea1ch c\u1ea3nh ngo\u00e0i, \u0111\u1ed9ng m\u1ea1ch m\u1ea1c treo tr\u00e0ng tr\u00ean khi \u0111\u00f3i.<\/p>\n

3. Si\u00eau \u00e2m h\u1ec7 t\u0129nh m\u1ea1ch b\u00ecnh th\u01b0\u1eddng<\/h2>\n

3.1 Si\u00eau \u00e2m 2D:<\/strong><\/h3>\n

Tr\u00ean m\u1eb7t c\u1eaft ngang cho th\u1ea5y t\u0129nh m\u1ea1ch c\u00f3 h\u00ecnh b\u1ea7u d\u1ee5c v\u1edbi tr\u1ee5c d\u00e0i n\u1eb1m ngang. Tr\u00ean m\u1eb7t c\u1eaft d\u1ecdc, th\u00e0nh tr\u01b0\u1edbc v\u00e0 th\u00e0nh sau kh\u00f4ng song song, th\u00e0nh m\u1ea1ch th\u01b0\u1eddng n\u1eb1m r\u1ea1p theo khu\u00f4n c\u1ee7a c\u00e1c c\u1ea5u tr\u00fac xung quanh. C\u1ea5u tr\u00fac 3 l\u1edbp c\u1ee7a t\u0129nh m\u1ea1ch kh\u00f4ng nh\u00ecn r\u00f5 do th\u00e0nh qu\u00e1 m\u1ecfng. \u0110\u01b0\u1eddng k\u00ednh t\u0129nh m\u1ea1ch thay \u0111\u1ed5i theo bi\u1ebfn thi\u00ean d\u00f2ng ch\u1ea3y, x\u1eb9p ho\u00e0n to\u00e0n khi \u1ea5n.<\/p>\n

C\u1ea5u tr\u00fac van: M\u1eb7t c\u1eaft d\u1ecdc th\u1ea5y h\u00ecnh \u1ea3nh 2 l\u00e1 van m\u1ea3nh, g\u1eafn v\u00e0o th\u00e0nh m\u1ea1ch, m\u00e9p van xu\u00f4i theo chi\u1ec1u d\u00f2ng ch\u1ea3y. Khi van m\u1edf, m\u00e9p van \u00e1p s\u00e1t th\u00e0nh m\u1ea1ch, khi van \u0111\u00f3ng, hai m\u00e9p van ch\u1ea1m v\u00e0o nhau v\u00e0 k\u00edn.<\/p>\n

M\u00e1u tron g l\u00f2ng t\u0129nh m\u1ea1ch l\u00e0 r\u1ed7ng \u00e2m, tuy nhi\u00ean c\u00f3 th\u1ec3 nh\u00ecn th\u1ea5y \u00e2m cu\u1ed9n \u1edf m\u1ed9t s\u1ed1 v\u1ecb tr\u00ed v\u00e0 thay \u0111\u1ed5i theo h\u00f4 h\u1ea5p ho\u1eb7c khi l\u00e0m c\u00e1c nghi\u1ec7m ph\u00e1p huy\u1ebft \u0111\u1ed9ng.<\/p>\n

3.2 Si\u00eau \u00e2m Doppler m\u00e0u:<\/strong><\/h3>\n

C\u00e1c t\u0129nh m\u1ea1ch g\u1ea7n tim: M\u00e0u d\u00f2ng ch\u1ea3y bi\u1ebfn \u0111\u1ed5i<\/p>\n

C\u00e1c t\u0129nh m\u1ea1ch n go\u1ea1i vi: D \u00f2ng ch\u1ea3y mang \u0111\u1eb7c t\u00ednh c\u1ee7a d\u00f2ng ch\u1ea3y t\u1edbi.<\/p>\n

3.3 Si\u00eau \u00e2m Doppler xung:<\/h3>\n

\u00c2m thanh: \u00c2m s\u1eafc tr\u1ea7m, bi\u1ebfn \u0111\u1ed5i theo h\u00f4 h\u1ea5p v\u00e0 nh\u1ecbp tim, nghe r\u00ec r\u00e0o nh\u01b0 s\u00f3ng v\u1ed7 v\u00e0o b\u1edd<\/p>\n

C\u00e1c t\u0129nh m\u1ea1ch g\u1ea7n tim: M\u00e0u d\u00f2ng ch\u1ea3y bi\u1ebfn \u0111\u1ed5i theo h\u00f4 h\u1ea5p v\u00e0 nh\u1ecbp tim<\/p>\n

C\u00e1c t\u0129nh m\u1ea1ch xa tim (t\u0129nh m\u1ea1ch ch\u1ee7 d\u01b0\u1edbi v\u00e0 chi d\u01b0\u1edbi): Bi\u1ebfn \u0111\u1ed5i theo h\u00f4 h\u1ea5p.<\/p>\n

4. H\u00ecnh \u1ea3nh si\u00eau \u00e2m c\u1ee7a r\u00f2 \u0111\u1ed9ng m\u1ea1ch – t\u0129nh m\u1ea1ch:<\/h2>\n

R\u00f2 \u0111\u1ed9ng – t\u0129nh m\u1ea1ch l\u00e0 t\u00ecnh tr\u1ea1ng th\u00f4ng th\u01b0\u01a1ng gi\u1eefa \u0111\u1ed9ng m\u1ea1ch v\u00e0 t\u0129nh m\u1ea1ch, ngh\u0129a l\u00e0 n\u1ed1i th\u00f4ng gi\u1eefa n\u01a1i c\u00f3 \u00e1p l\u1ef1c cao sang n\u01a1i c\u00f3 \u00e1p l\u1ef1c th\u1ea5p, do \u0111\u00f3 s\u1ebd t\u1ea1o ra s\u1ef1 ch\u00eanh \u00e1p l\u1edbn.<\/p>\n

4.1 H\u00ecnh \u1ea3nh si\u00eau \u00e2m tr\u01b0\u1edbc l\u1ed7 r\u00f2 <\/strong>(t\u1ea1i \u0111\u1ed9ng m\u1ea1ch):<\/h3>\n

\u0110\u1ed9ng m\u1ea1ch c\u1ea5p m\u00e1u cho l\u1ed7 r\u00f2 s\u1ebd c\u00f3 bi\u1ec3u hi\u1ec7n t\u0103ng g\u00e1nh, t\u0103ng l\u01b0u l\u01b0\u1ee3ng th\u1ec3 hi\u1ec7n \u1edf t\u0103ng \u0111\u01b0\u1eddng k\u00ednh, t\u0103ng v\u1eadn t\u1ed1c v\u00e0 l\u01b0u l\u01b0\u1ee3ng. Ch\u1ec9 s\u1ed1 m\u1ea1ch \u0111\u1eadp v\u00e0 ch\u1ec9 s\u1ed1 s\u1ee9c c\u1ea3n gi\u1ea3m h\u01a1n so v\u1edbi b\u00ecnh th\u01b0\u1eddng (t\u0129nh m\u1ea1ch ho\u00e1).<\/p>\n

H\u00ecnh \u1ea3nh si\u00eau \u00e2m t\u1ea1i v\u1ecb tr\u00ed r\u00f2 :<\/p>\n

Si\u00eau \u00e2m 2D: C\u00f3 th\u1ec3 quan s\u00e1t th\u1ea5y n\u1ebfu l\u1ed7 r\u00f2 l\u1edbn, c\u1ea7n x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1eddng k\u00ednh ho\u1eb7c di\u1ec7n t\u00edch.<\/p>\n

Si\u00eau \u00e2m Doppler m\u00e0u: D\u00f2ng m\u00e0u lo\u1ea1n s\u1eafc<\/p>\n

Si\u00eau \u00e2m Doppler xung: Ph\u1ed5 Doppler c\u00f3 \u0111\u01b0\u1eddng bi\u00ean kh\u00e1 \u0111\u1ec1u, v\u1eadn t\u1ed1c t\u00e2m thu v\u00e0 t\u00e2m tr\u01b0\u01a1ng \u0111\u1ec1u cao, tr\u1ecb s\u1ed1 s\u1ee9c c\u1ea3n r\u1ea5t th\u1ea5p.<\/p>\n

4.2 H\u00ecnh \u1ea3nh si\u00eau \u00e2m sau v\u1ecb tr\u00ed r\u00f2 <\/strong>(t\u1ea1i t\u0129nh m\u1ea1ch):<\/h3>\n

Si\u00eau \u00e2m 2D: Gi\u00e3n \u0111\u01b0\u1eddng k\u00ednh t\u0129nh m\u1ea1ch Si\u00eau \u00e2m m\u00e0u: D\u00f2ng m\u00e0u lo\u1ea1n s\u1eafc<\/p>\n

Si\u00eau \u00e2m Doppler: P h\u1ed5 t\u0129nh m\u1ea1ch b\u1ecb \u0111\u1ed9ng m\u1ea1ch ho\u00e1.<\/p>\n

\"Si\u00eau<\/p>\n

Si\u00eau \u00e2m Doppler r\u00f2 \u0111\u1ed9ng- t\u0129nh m\u1ea1ch<\/strong><\/p>\n

5. K\u1ebft lu\u1eadn<\/h2>\n

Si\u00eau \u00e2m Doppler trong r\u00f2 \u0111\u1ed9ng t\u0129nh m\u1ea1ch l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p kh\u00f4ng x\u00e2m l\u1ea5n \u0111\u1ec3 \u0111o t\u1ed1c \u0111\u1ed9 d\u00f2ng m\u00e1u trong t\u0129nh m\u1ea1ch. K\u1ef9 thu\u1eadt n\u00e0y s\u1eed d\u1ee5ng s\u00f3ng si\u00eau \u00e2m \u0111\u1ec3 ph\u00e1t hi\u1ec7n c\u00e1c s\u1ef1 thay \u0111\u1ed5i trong t\u1ed1c \u0111\u1ed9 d\u00f2ng m\u00e1u v\u00e0 \u0111\u00e1nh gi\u00e1 s\u1ef1 ch\u00eanh l\u1ec7ch gi\u1eefa t\u1ed1c \u0111\u1ed9 d\u00f2ng m\u00e1u t\u1ea1i c\u00e1c v\u1ecb tr\u00ed kh\u00e1c nhau tr\u00ean t\u0129nh m\u1ea1ch. Si\u00eau \u00e2m Doppler trong r\u00f2 \u0111\u1ed9ng t\u0129nh m\u1ea1ch \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ch\u1ea9n \u0111o\u00e1n c\u00e1c b\u1ec7nh l\u00fd nh\u01b0 suy t\u0129nh m\u1ea1ch, \u0111\u1ed9ng m\u1ea1ch v\u00e0nh, v\u00e0 b\u1ec7nh \u0111\u1ed9t qu\u1ef5.<\/p>\n","protected":false},"excerpt":{"rendered":"

R\u00f2 \u0111\u1ed9ng – t\u0129nh m\u1ea1ch l\u00e0 t\u00ecnh tr\u1ea1ng th\u00f4ng th\u01b0\u01a1ng gi\u1eefa \u0111\u1ed9ng m\u1ea1ch v\u00e0 t\u0129nh m\u1ea1ch, ngh\u0129a l\u00e0 n\u1ed1i th\u00f4ng gi\u1eefa n\u01a1i c\u00f3 \u00e1p l\u1ef1c cao sang n\u01a1i c\u00f3 \u00e1p l\u1ef1c th\u1ea5p, do \u0111\u00f3 s\u1ebd t\u1ea1o ra s\u1ef1 ch\u00eanh \u00e1p l\u1edbn.Si\u00eau \u00e2m Doppler l\u00e0 th\u0103m d\u00f2 c\u1eadn l\u00e2m s\u00e0ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t […]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[88,33],"tags":[],"yoast_head":"\nSi\u00eau \u00e2m c\u1ee7a r\u00f2 \u0111\u1ed9ng-t\u0129nh m\u1ea1ch - Vinmec<\/title>\n<meta name=\"description\" content=\"R\u00f2 \u0111\u1ed9ng - t\u0129nh m\u1ea1ch l\u00e0 th\u00f4ng th\u01b0\u01a1ng gi\u1eefa \u0111\u1ed9ng m\u1ea1ch v\u00e0 t\u0129nh m\u1ea1ch n\u1ed1i th\u00f4ng gi\u1eefa n\u01a1i c\u00f3 \u00e1p l\u1ef1c cao sang n\u01a1i c\u00f3 \u00e1p l\u1ef1c th\u1ea5p.\" \/>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Si\u00eau \u00e2m c\u1ee7a r\u00f2 \u0111\u1ed9ng-t\u0129nh m\u1ea1ch - 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