{"id":30509,"date":"2023-05-03T15:08:39","date_gmt":"2023-05-03T08:08:39","guid":{"rendered":"http:\/\/noithathoaphat.in\/ctv\/?p=30509"},"modified":"2023-05-03T15:08:39","modified_gmt":"2023-05-03T08:08:39","slug":"sieu-am-cua-ton-thuong-phinh-dong-mach","status":"publish","type":"post","link":"http:\/\/noithathoaphat.in\/ctv\/index.php\/2023\/05\/03\/sieu-am-cua-ton-thuong-phinh-dong-mach\/","title":{"rendered":"Si\u00eau \u00e2m c\u1ee7a t\u1ed5n th\u01b0\u01a1ng ph\u00ecnh \u0111\u1ed9ng m\u1ea1ch"},"content":{"rendered":"

Ph\u00ecnh \u0111\u1ed9ng m\u1ea1ch l\u00e0 t\u00ecnh tr\u1ea1ng gi\u00e3n ra c\u1ee5c b\u1ed9 c\u1ee7a th\u00e0nh m\u1ea1ch l\u00e0m m\u1ea5t t\u00ednh song song c\u1ee7a th\u00e0nh \u0111\u1ed9ng m\u1ea1ch. 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. H\u00ecnh \u1ea3nh si\u00eau \u00e2m c\u1ee7a t\u1ed5n th\u01b0\u01a1ng ph\u00ecnh \u0111\u1ed9ng m\u1ea1ch<\/h2>\n

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

Ph\u00ecnh \u0111\u1ed9ng m\u1ea1ch l\u00e0 t\u00ecnh tr\u1ea1ng gi\u00e3n ra c\u1ee5c b\u1ed9 c\u1ee7a th\u00e0nh m\u1ea1ch l\u00e0m m\u1ea5t t\u00ednh song song c\u1ee7a th\u00e0nh \u0111\u1ed9ng m\u1ea1ch. C\u00f3 3 ki\u1ec3u ph\u00ecnh \u0111\u1ed9ng m\u1ea1ch:<\/p>\n

    \n
  • Ph\u00ecnh h\u00ecnh t\u00fai kh\u00f4ng c\u00f3 cu\u1ed1ng.<\/li>\n
  • Ph\u00ecnh h\u00ecnh t\u00fai c\u00f3 cu\u1ed1ng.<\/li>\n
  • Ph\u00ecnh h\u00ecnh<\/li>\n<\/ul>\n

    Si\u00eau \u00e2m 2D v\u1edbi 2 m\u1eb7t c\u1eaft c\u01a1 b\u1ea3n l\u00e0 d\u1ecdc tr\u1ee5c v\u00e0 ngang tr\u1ee5c c\u00f3 th\u1ec3 cung c\u1ea5p th\u00f4ng tin v\u1ec1 h\u00ecnh th\u00e1i v\u00e0 c\u1ea5u tr\u00fac c\u1ee7a kh\u1ed1i ph\u00ecnh:<\/p>\n

      \n
    • K\u00edch th\u01b0\u1edbc: Chi\u1ec1u d\u00e0i, \u0111\u01b0\u1eddng k\u00ednh tr\u01b0\u1edbc sau, \u0111\u01b0\u1eddng k\u00ednh ngang l\u1edbn nh\u1ea5t, \u0111\u01b0\u1eddng k\u00ednh c\u1ed5 tr\u00ean, c\u1ed5 d\u01b0\u1edbi.<\/li>\n
    • Li\u00ean quan c\u1ee7a kh\u1ed1i ph\u00ecnh: Kh\u1ed1i ph\u00ecnh li\u00ean quan \u0111\u1ebfn nh\u1eefng c\u1ea5u tr\u00fac gi\u1ea3i ph\u0201u n\u00e0o, ch\u00e8n \u00e9p m\u1ea1ch m\u00e1u n\u00e0o.<\/li>\n
    • Bi\u1ebfn ch\u1ee9ng: Huy\u1ebft kh\u1ed1i trong kh\u1ed1i ph\u00ecnh, c\u00f3 t\u00e1ch th\u00e0nh \u0111\u1ed9ng m\u1ea1ch hay kh\u00f4ng.<\/li>\n<\/ul>\n

      \"Ph\u00ecnh<\/p>\n

      Ph\u00ecnh \u0111\u1ed9ng m\u1ea1ch tr\u00ean si\u00eau \u00e2m 2D<\/strong><\/p>\n

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

      \u00c2m thanh: Ph\u1ee5 thu\u1ed9c v\u1ecb tr\u00ed m\u1ea1ch kh\u1ea3o s\u00e1t, n\u00f3i chung \u00e2m thanh t\u1ea7n s\u1ed1 kh\u00f4ng cao, nghe ng\u1eafn v\u00e0 g\u1ecdn.<\/p>\n

      H\u00ecnh \u1ea3nh m\u00e0u: V\u00f2ng xo\u00e1y \u00e2m – d\u01b0\u01a1ng n\u1eeda xanh n\u1eeda \u0111\u1ecf, t\u01b0\u1ee3ng tr\u01b0ng cho lu\u1ed3ng xoay t\u1ed1c \u0111\u1ed9 kh\u00f4ng l\u1edbn.Ph\u1ed5 Doppler: Ph\u1ee5 thu\u1ed9c v\u1ecb tr\u00ed kh\u1ea3o s\u00e1t, c\u00f3 th\u1ec3 ph\u1ea7n (-) ho\u1eb7c ph\u1ea7n (+) chi\u1ebfm \u01b0u th\u1ebf ho\u1eb7c ch\u1ec9 m\u1ed9t ph\u00eda.<\/p>\n

      3.2.1 Si\u00eau \u00e2m Doppler \u0111\u00e1nh gi\u00e1 ph\u00ecnh \u0111\u1ed9ng m\u1ea1ch ch\u1ee7 b\u1ee5ng<\/h4>\n

      \u0110\u1ed9ng m\u1ea1ch ch\u1ee7 b\u1ee5ng \u0111\u01b0\u1ee3c cho l\u00e0 c\u00f3 ch\u1ee9ng ph\u00ecnh \u0111\u1ed9ng m\u1ea1ch khi \u0111\u1ed9ng m\u1ea1ch ch\u1ee7 \u1edf xa b\u1ecb gi\u00e3n ra v\u1edbi \u0111\u01b0\u1eddng k\u00ednh l\u1edbn h\u01a1n 3cm. M\u1ed9t ph\u00ecnh \u0111\u1ed9ng m\u1ea1ch ch\u1ee7 b\u1ee5ng th\u01b0\u1eddng m\u1edf r\u1ed9ng v\u1edbi t\u1ed1c \u0111\u1ed9 2-8 mm \/ y. B\u1edfi v\u00ec m\u1edf r\u1ed9ng d\u1eabn \u0111\u1ebfn t\u1ef7 l\u1ec7 v\u1ee1 ng\u00e0y c\u00e0ng t\u0103ng (v\u00ed d\u1ee5, ph\u00ecnh \u0111\u1ed9ng m\u1ea1ch ch\u1ee7 b\u1ee5ng 7cm c\u00f3 t\u1ef7 l\u1ec7 v\u1ee1 19-32% m\u1ed7i n\u0103m) v\u00e0 v\u00ec t\u1ef7 l\u1ec7 t\u1eed vong khi s\u1eeda ch\u1eefa t\u1ef1 ch\u1ecdn th\u1ea5p h\u01a1n nhi\u1ec1u so v\u1edbi s\u1eeda ch\u1eefa kh\u1ea9n c\u1ea5p (3- 5% so v\u1edbi 50%), khuy\u1ebfn ngh\u1ecb chung l\u00e0 ph\u00ecnh \u0111\u1ed9ng m\u1ea1ch ch\u1ee7 b\u1ee5ng l\u1edbn h\u01a1n 5,0-5,5 cm n\u00ean \u0111\u01b0\u1ee3c s\u1eeda ch\u1eefa m\u1ed9t c\u00e1ch t\u1ef1 ch\u1ecdn.<\/p>\n

      M\u1eb7c d\u00f9 tuy\u1ec7t v\u1eddi cho c\u00e1c t\u1ed5n th\u01b0\u01a1ng sau, si\u00eau \u00e2m kh\u00f4ng cung c\u1ea5p \u0111\u1ee7 chi ti\u1ebft \u0111\u1ec3 l\u1eadp k\u1ebf ho\u1ea1ch th\u1ee7 thu\u1eadt ho\u1eb7c c\u00e1c t\u1ed5n th\u01b0\u01a1ng ph\u1ee9c t\u1ea1p h\u01a1n. V\u1edbi ph\u1ea1m vi \u0111\u01b0\u1ee3c b\u00e1o c\u00e1o trong sai s\u1ed1 \u0111o l\u00e0 4mm 12 , si\u00eau \u00e2m kh\u00f4ng th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng m\u1ed9t c\u00e1ch \u0111\u00e1ng tin c\u1eady \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 c\u00e1c ph\u01b0\u01a1ng ph\u00e1p \u0111i\u1ec1u tr\u1ecb n\u1ed9i m\u1ea1ch v\u00e0 \u0111\u00e1nh gi\u00e1 c\u00e1c m\u1ea1ch nh\u00e1nh khu v\u1ef1c.<\/p>\n

      Ch\u1ec9 \u0111\u1ecbnh si\u00eau \u00e2m trong ph\u00ecnh \u0111\u1ed9ng m\u1ea1ch ch\u1ee7 b\u1ee5ng<\/b>\u00a0trong c\u00e1c tr\u01b0\u1eddng h\u1ee3p sau:<\/p>\n

        \n
      • Nghi ng\u1edd ph\u00ecnh \u0111\u1ed9ng m\u1ea1ch ch\u1ee7 b\u1ee5ng<\/li>\n
      • Nh\u01b0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p h\u1ed7 tr\u1ee3 ch\u1ea9n \u0111o\u00e1n trong vi\u1ec7c \u0111\u00e1nh gi\u00e1 nh\u1eefng b\u1ec7nh nh\u00e2n tr\u00ean 60 tu\u1ed5i c\u00f3 bi\u1ec3u hi\u1ec7n \u0111au kh\u00f4ng \u0111\u1eb7c hi\u1ec7u \u1edf l\u01b0ng, m\u1ea1n s\u01b0\u1eddn, b\u1ee5ng ho\u1eb7c b\u1eb9n<\/li>\n
      • \u0110\u1ec3 \u0111\u00e1nh gi\u00e1 nhanh m\u1ed9t b\u1ec7nh nh\u00e2n kh\u00f4ng \u1ed5n \u0111\u1ecbnh trong t\u00ecnh tr\u1ea1ng c\u1ea5p c\u1ee9u ho\u1eb7c b\u1ec7nh nh\u00e2n ch\u0103m s\u00f3c c\u1ea5p t\u00ednh kh\u00e1c.<\/li>\n<\/ul>\n

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

        Si\u00eau \u00e2m \u0111\u1ed9ng m\u1ea1ch l\u00e0 m\u1ed9t k\u1ef9 thu\u1eadt\u00a0 s\u1eed d\u1ee5ng s\u00f3ng si\u00eau \u00e2m \u0111\u1ec3 t\u1ea1o ra h\u00ecnh \u1ea3nh v\u00e0 \u0111\u00e1nh gi\u00e1 s\u1ee9c kh\u1ecfe c\u1ee7a \u0111\u1ed9ng m\u1ea1ch. K\u1ef9 thu\u1eadt n\u00e0y cho ph\u00e9p\u00a0 xem x\u00e9t c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 l\u01b0u th\u00f4ng m\u00e1u v\u00e0 h\u00ecnh d\u1ea1ng c\u1ee7a \u0111\u1ed9ng m\u1ea1ch, gi\u00fap ph\u00e1t hi\u1ec7n c\u00e1c b\u1ec7nh l\u00fd nh\u01b0 \u0111\u1ed9ng m\u1ea1ch b\u1ecb xo\u1eafn, \u0111\u1ed9ng m\u1ea1ch b\u1ecb ph\u00ecnh, v\u00e0 c\u00e1c t\u1eafc ngh\u1ebdn kh\u00e1c. Si\u00eau \u00e2m \u0111\u1ed9ng m\u1ea1ch kh\u00f4ng x\u00e2m l\u1ea5n v\u00e0 kh\u00f4ng g\u00e2y \u0111au, n\u00ean \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c ph\u00f2ng kh\u00e1m v\u00e0 b\u1ec7nh vi\u1ec7n.<\/p>\n","protected":false},"excerpt":{"rendered":"

        Ph\u00ecnh \u0111\u1ed9ng m\u1ea1ch l\u00e0 t\u00ecnh tr\u1ea1ng gi\u00e3n ra c\u1ee5c b\u1ed9 c\u1ee7a th\u00e0nh m\u1ea1ch l\u00e0m m\u1ea5t t\u00ednh song song c\u1ee7a th\u00e0nh \u0111\u1ed9ng m\u1ea1ch. 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. 1. T\u1ed5ng quan Si\u00eau \u00e2m Doppler l\u00e0 […]<\/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 t\u1ed5n th\u01b0\u01a1ng ph\u00ecnh \u0111\u1ed9ng m\u1ea1ch - Vinmec<\/title>\n<meta name=\"description\" content=\"Ph\u00ecnh \u0111\u1ed9ng m\u1ea1ch l\u00e0 s\u1ef1 gi\u00e3n ra c\u1ee5c b\u1ed9 c\u1ee7a th\u00e0nh m\u1ea1ch l\u00e0m m\u1ea5t t\u00ednh song song c\u1ee7a th\u00e0nh \u0111\u1ed9ng m\u1ea1ch. 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