Bài viết Mối liên quan giữa các đặc điểm hình ảnh chụp mạch số hóa xóa nền với biểu hiện xuất huyết và động kinh của dị dạng động tĩnh mạch não trình bày nghiên cứu nhằm mô tả mối liên quan giữa các đặc điểm cấu trúc mạch của ổ dị dạng động tĩnh mạch trên phim chụp động mạch số hoá xoá nền (DSA) với triệu chứng xuất huyết não và động kinh. Trong vòng 10 năm từ 1/2002 đến 8/2012 tại bệnh viện Bạch Mai,... Mời các bạn cùng tham khảo.
Trang 1! "#$ '( #)* 4+,-.( 4+/" 301(+2 3#4! 3#5( 647(
68 (# 9(#2 :)(# ;& )( <& #/" 5 6= 4>&
?@!& % ",4(+"A#!B+@!& % "4@
4+=- (#D(* E 9E 4+=- 60F" "#GH I #,D(* JE
klm nopRqrstpuvwopxryzop{t R|ok\}okuv~tklm K|okkops
20(+6<&#/"56=4>& )(#;&)(<&#/"56=4>&9 )(#;&)(4?3
4+#&'(",(#@@I9@&'(,!(+&!"7"6"6&@"G,I"@<"#"!A A<(+6>(+I(#@<"#
I'(H#&@"#H6>(+@<"##4747((8 ;&&),"#(+,GI#,-I(4;=6>(+&(#C24(+; (+ (¡@I¢E 7E I<&:)(#;&)( <"#!&2"£ :)(#(#¤(A A<(+6>(+I(#@<"#24(+
I0(+#FH"£,GI#,-I(427I0(+#FH"£I),"#(+6>(+&(#C37"AG,#&),#8(#9(#
"#H60F"I#,I#DH+¥@; I¦"#I#0"A A<(+26"6&@6>(+@<"#(,&2I(#@<"#A§(%0,C 4+#&'(","#4I#G-A A<(+6>(+I(#@<"#¦"#I#0"(#¨©9"@2(#@<"#A§(%0,A,-(#GI;="£#ªH
%=(#(+6"6&@%'(,!("£«(+#!;&:&,#&)(,GI#,-IC4#(+A A<(+6>(+I(#@<"#"£I¢#!&
I(#@<"#A§(%0,I¬%'(;="£I(#@<"#A§(%0,+&(H#8(#%="7"-,I%'(,!("£«(+#!I&:&,#&)( 6>(+&(#C
®k¯°±²³²lop´µop¶okmlrko·¸tr¹r´ºr´|»m r¼u½¾rmlrkt¿|»uk|ĂoÂu¼kuv~t´µop®|okĐ
ÊRS\`R[
ÔƠƯÌỈĨÍƯỊÌĨÍỬỮÏĨÐƯÑỈÒÐƯĨÓÔƯÕÖƯרÎƯ
ÎÐÙÚĨÍƯ×ÛÑƯÜÝĨÐƯÒÞßƯÑỈÒÐƯÑăâƯĨÓÔđƯ×êĨƯ ÒÐØÎƯÖƯÑÌÎƯỊăÑƯÍôÑƯỊÌĨÍƯÑỈÒÐƯơÖỮĨÐƯÑỈÒÐƯ ÑÖƯưƯỊìƯÌỉĨÍƯÑăâỮĩƯỊÌĨÍƯÑỈÒÐƯÒìƯăíƯÕịÒƯ ÒßÔƯÒÐêìỮÐíĨÍƯÜßĨÍỮÏĨÐƯÑỈÒÐđƯỊÝƯîâßƯÑÌÎƯ ÐÔïÒƯĨÐÝðâƯÑỈÒÐỮÐñĨÍƯÑÖƯòÐñĨÍƯÒìƯÐóỮÐôĨÍƯ ÑßÔƯÑỈÒÐỮõâĨÍƯÍÝßĨöƯÔƠƯÌỈĨÍƯỊÌĨÍỬỮÏĨÐƯ ÑỈÒÐƯĨÓÔƯÍôÑƯ×ßỮÐÖĨÐƯíÐ÷ĨƯÕÖƯÒăÒƯỊÌĨÍƯ ÑỈÒÐƯĨâñÝđøƯÌƠƯÌỈĨÍƯơÖỮĨÐƯÑỈÒÐƯÌùĨƯÕÙâƯúûüö
ýÝþâƯÐÝóĨƯÕÿÑƯÜÖĨÍƯÒÞßƯÌƠƯÌỈĨÍƯỊÌĨÍỬÏĨÐƯ ÑỈÒÐƯĨÓÔƯÍôÑƯ0âØÎƯÐâì1ÎđƯỊÌĨÍƯòÝĨÐđƯỊßâƯ Ị÷âđƯÒăÒƯÌØâƯÐÝóâỮÐ÷ĨƯòÝĨÐƯòÐâỮ2ƯơÖƯÑÌÎƯÜôƯ
ÎóâƯÒÐ3ĨÍƯòÐăÒƯĨÐÙƯÒÐìĨÍƯÑïÎđăÒƯÑ4Îöúûüö 5õÔĨÍƯỊìđƯ0âØÎƯÐâì1ÎƯĨÌÝƯÜ6ỮõÔĨÍƯÕÖƯ×ÝþâƯÐÝóĨƯ
ÕÿÑƯÜÖĨÍỮÐÙÚĨÍƯÍïíƯĨÐØÎđÍÿìƯÐ7âƯîâêƯĨïĨÍƯ
ĨðƯĨÐØÎƯơÖỮÝ1ĨỮõþĨƯÌùĨƯỊ1ĨỮ8ƯơÔĨÍƯÒßÔđƯ
ÌĨÍƯòÝĨÐƯÒĨÍƯÕÖỮõóâƯÒÐ3ĨÍƯÐßìƯÍïíỮõÔĨÍƯ
×óĨÐƯÒêĨÐƯÕÿÑƯÜÖĨÍƯÒÞßƯÌƠƯÌỈĨÍƯỊÌĨÍỬỮÏĨÐƯ ÑỈÒÐƯĨÓÔƯÜßâƯÒÐêìƯÑăâƯĨÓÔđƯÒÐÝ1ÑƯòÐÔêĨÍƯ
õÙÚĨÍƯÐíƯú9üöƯÔÔƯỊìđƯĨÐ7ĨƯÌỈĨÍƯ ÒăÒƯì1âỮôƯĨÍâìƯÒƯ0âØÎƯÐâì1ÎƯơÖƯỊÌĨÍƯòÝĨÐƯ ÒÞßƯÌƠƯÌỈĨÍƯỊÌĨÍỬỮÏĨÐƯÑỈÒÐƯĨÓÔƯÕÖƯõØÎƯîâßĨƯ
Î6ĨÍƯỊþƯỊÙßƯõßƯÒÐÝ1ĨƯÕÙÒƯỊÝðâỮõƯ5õÔĨÍƯìƯ ơĨƯÒĨÍƯÒìƯĨÐĨÍƯĨÍÐÝĨƯÒ3âƯÕÝĨƯîâßĨƯỊ1ĨƯ ơØĨƯỊðƯĨÖìđƯĨÐÙĨÍỮÐÙÚĨÍƯÒÐÔƯĨÐĨÍƯò1ÎƯ
Õâ7ĨƯòÐăÒƯĨÐßầƯ
ÍÐÝĨƯÒ3âƯÒÞßƯÒÐ2ĨÍỮñÝƯĨÐÑƯÑÒỮÝâƯ íÐÿĨỮÒÐƯĨÐĨÍƯỊïÒƯỊÝþÑƯÐĨÐỮÐăÝƯÒÞßƯÌƠƯ ÌỈĨÍƯỊÌĨÍỬỮÏĨÐƯÑỈÒÐƯĨÓÔƯơÖƯÕÖÑƯÜăĨÍỮƯ
ÎÐÑƯÑôÝỮÙĨÍƯîâßĨƯÒÞßƯÒÐ2ĨÍƯỊ1ĨƯ×ÝþâƯ
ÐÝóĨƯ0âØÎƯÐâì1ÎƯơÖƯỊÌĨÍƯòÝĨÐöƯ
ÊRL\bQ
ÍÐÝĨƯÒ3âƯ×óĨÐƯÒÐ3ĨÍỮõĨƯ ûƯ×óĨÐƯ ĨÐÿĨƯƯỊÙÒƯÒÐƯỊƠĨÐƯÒÐíƯơÖƯỊÙÒƯÒÐÛĨƯỊÔăĨƯ
Trang 2!"#$%&"'(")$")*%+"#,%+"-"./%&"0*!&"%12".4%"
0 5"0*!&"67"&89"89"%:%";<=>?".*@"A&29"
B&C%"#2 %"DE%&"F%&G"HI%&"J@I%"K*!&"L9@G".M"
.& %+"NOPQNNQ"#R%".& %+"NSPQNOQT"B !")*%+"
)$")*%+"0*!&"A& !"A&U%+"V&F@"(")$")*%+"#,%+"
-"./%&"0*!&"%12"%&W")X"0(%+"!Y%+G".&U%+"
#,%+"0*!&"!F%&"-"29%+"&9%+G")$")*%+"./%&"
0*!&"Z9'[%G"A&U%+"%\0".2%+"%+&@4%"!Y]"%(5T"
K@^]"&@I%"]_."&]5R."#W`!"!&C%"#2 %" !"
#$%&"H\%+"!&aV"!b."'cV"J@".d%&"J(P&2e!"!,%+"
&Wf%+".M"6g"%12T"K@^]"&@I%"#,%+"A@%&"#W`!"
!"#$%&")h9"J(2".@:%"6iG")_]"&@I]"'j0"6(%+"
J("AR."k]F"#@I%"%12"#lT"B_]".3m!"0*!&"!n9"o"
)$")*%+"H92"+l0"J$".3"Ad!&".&Wc!G"#e!"#@^0"
#,%+"0*!&"%]U@G"&E%&".& @"./%&"0*!&")p%"'W]"
#W`!"V&j%".d!&".34%"V&@0"!&aV"0*!&"67"&89"
89"%:%";<=>?"!8"V&7@"&`V"Jc@"!b."'cV"J@".d%&""
J(P&2e!"!,%+"&Wf%+".MT"
q$".3")$")*%+"#,%+"-"./%&"0*!&"%12"#W`!"
6bV"RV"'(0"&9@"%&80"%U%+"%\0"Jr"&2e!")Wc@"
Jr"! !".&s5"%12"; %G"#t%&G"& @")Wu%+G"!&C0G"
.&s5"#F2?GJs%+"6j]";&*!&"%:%G"#l@"&$G&^".9@"
J(")Wc@"':]?T"vd!&".&Wc!"o")$")*%+";#Ww%+"
Ad%&".7@"#9?"#W`!"V&j%"!&@9".&[2"V&j%"'2*@"!n9"
=V[.x'[3"-"L93.%".&(%&"%&r";y"z"!0?G".3]%+"
HE%&";z"-{"!0?"J("'c%";|"{"!0?T
B !"#e!"#@^0"#,%+"0*!&"%]U@"#W`!"V&j%"
.!&"+l0}")$")*%+"#,%+"-"./%&"0*!&"%12"#W`!"
!_V"0 ]"Hf@"! !"%& %&"%U%+G"6j]"&2e!"V&7@"
&`V"!F"%U%+"J("6j]~"%&80"!_V"0 ]"%U%+"'("
! !"%& %&"Jr"!n9"#,%+"0*!&"%12".Wc!G"+@9"
J("69]~"%&80"!_V"0 ]"6j]"+l0"! !"%& %&"
]54%G"# 0"37@"0*!&"0*!"J("! !"#,%+"0*!&"
&7"69]~"67"'W`%+"#,%+"0*!&"%]U@"OG"QG"z"J("|"
z?T"&E%&"0*!&"#W`!"V&j%".&[2"J$".3"!n9"
!&m%+G"+l0"V&E%&".32%+"o")$")*%+"J("f"#,%+"
0*!&"%]U@T
B !"#e!"#@^0".%&"0*!&")p%"'W]"+l0}"J$"d
%U%+G"6j]"&2e!"V&7@"&`V~"67"'W`%+";OG"QG"|"Q?~
J("H_.".&Ww%+"./%&"0*!&"+l0"&V";.4%"|"
&j%".d!&".&7%+"A4"#W`!"6i")a%+"#^"A@^0"
#$%&"! !"5R]".7"!_]".3m!"0*!&"%4]".34%"'@4%" k]9%"!8""%+&/9"#R%"H@^]"&@I%"]_."&]5R."J("
#,%+"A@%&T"BF".&7%+"A4"0U".F"J("V&j%".!&"6 "
#W`!".&h!"&@I%T"B !"H@R%"#,!"'V"#W`!"'h9"
!&g%"!&2"V&j%".!&"#u%"H@R%".M"#8"#W9"39"0U"
&E%&"V&j%".d!&"#9"H@R%T"B !")"'@I]"#W`!" V&j%".!&".4%"=.9.9T"ON"Jc@"0Y!""%+&/9".&7%+" A4"V"y"NGNT"
}"&%+"HI%&"%&j%" )$")*%+"#,%+"./%&"0*!&"%12"!8"!&t"#$%&"!&aV"
<=>"0*!&"%12"#:]"#W`!"+@F@"&d!&"#5"#n"J:" HI%&"J("V&Wu%+"V& V"!&C%"#2 %G"#@:]".3" KI%&"%&j%"#l%+""!9%".&@IV"!&aV"0*!&"J("
#l%+"".&90"+@9"J(2"%+&@4%"!Y]T"
¡¢£
¤¥¦ ¡§¨ ©¦ ª32%+"QQO")$")*%+"#,%+"-.%&"0*!&"%12"!8" OQN";«Gz?"Ww%+"&`V"]_."&]5R.T¬@4%"k]9%" +@9"! !"#e!"#@^0"&E%&".& @"!n9")$")*%+"#,%+"
-"./%&"0*!&"%12"J("]_."&]5R."#W`!".&^"&@I%" 2%+"HF%+"OT"
e!"#@^0"J$"d!n9"o")$")*%+G"!8"SO".Ww%+"
&`V"H$"]_."&]5R.".32%+"O{®")$")*%+"#,%+"-" %&"0*!&"%12"%\0"%U%+";«SG?GWu%+".h"!8" z¯P«".3Ww%+"&`V"%\0"6j]";®QGQQ?T"B8" SNPOO®"o")$")*%+"Ad!&".&Wc!"%&r";y"z"!0?"H$"
]_."&]5R."{SGzS?T
<$")*%+"#,%+"-/%&"0*!&"%12"H$"]_."&]5R." 2%+"%&80"!8"0,."!]7%+"0*!&"%]U@"!&@R0" Q¯PzS".3Ww%+"&`V";®{GzQ?G".34%"Q"!]7%+"
!&@R0"¯OPOSz";«¯G®z?T"<$")*%+"#,%+"-"./%&" 0*!&"%12"H$"]_."&]5R.".32%+"%&80"!8"V&E%&" 0*!&".&_5"Q¯P«Q".3Ww%+"&`V";{¯GN?G".32%+"
%&80"A&U%+"!8"V&E%&"0*!&"!&@R0"¯OPO®¯" Ww%+"&`V";NGS«?T
°]_."&]5R.".32%+"%&80"./%&"0*!&")p%"'W]"
Trang 3!"#$%!"!&'()"(#*+",*"+-!"!.(#"+/,#"01("
23""# $"4556477"!38()"#9:";<=>7?@A>&B("?"
,*"?56<<";C5>C@AD"E !"#$%!"!&'()"(#*+",*"
#F:"!(#"+/,#",#G%+"CC6=<";H4>H=@AD
IJKLMNOPQRSTU VWKVXVYSQZ[\]\^KLR_KLX`KVU^QVabcSTdVSeKfdgXVdhiX
vw"x yz" 7=" C{" H?>??" 5>55?"
|}()" 4<H" ~4" =~>75"
x,#"!#3," "C,+" 44H" ~5" <~>C~" "5>554"
"C,+" 45=" =5" C~>=<"
F:"!.(#"+/,#"
01("23"
*" =<" CC" H4>H="
5>55~"
#}()" 4H7" ~H" ={>H4"
y"239()"-()"
+/,#"(}G"
$"(# !" C~" ?{" H<>C?"
5>55C"
|#G" 4~C" {4" ={>HC"
#(#" !&'()" ""
0w"0/()"
*" =?" ?{" <{>57"
5>5CC"
#}()" 4H{" {4" 75>~="
.(#"+/,#"01("
23" z" ("
!#("
*" ={" C~" HH>77"
"5>554"
#}()" 4H?" ~?" =H><H"
y" 239()" !.(#"
+/,#"01("23"
$"(# !" 477" 455" <=>7?"
"5>554"
|#G" <<" ?5" C5>C5"
!"-" #"!" 4<{" {7" 7<>?4" 5>C5C"
("!" 7?" ?7" =~>5~"
#z("!x,#"("G%(":#G"#9:" !"#$%!"G",,"$%"!"w"!&"z";"?>H<"{7@" "4>=4"" 7>C~A>" x,#"!#3,"(#""C,+";"C>=<"{7@" "4>{~""<>5CA>"-()"+/,#"(}G"0$"(# !";" C>?<"{7@" 4>=<"H>?<A"¡",*":#(#"+/,#";"?>4<"{7@" 4>57"=>=?A>.(#"+/,#"01("23"
z";"C>H{"{7@" "4>~?""H>{5A>"0$"(# !";"=>4~"{7@" "?>?7""H>HHA"¡",*"#F:";"
?>7H"{7@" 4>?H"7>?4A"",*"¢" #,"G£!",*"¤"()#."!#()" B>":""5>57AD ,"$%"!",*"¤"()#."!&'()":#z("!x,#"("G%("39,"!G%:"!¥,":#z("!x,#""G%("(#¦+":#z("
G£!",*"¤"()#."#(";§()"?AD%!"¨§":#z("!,#",G",©()",#'"!# $",ª("2/G",*""$%"!",*"¤"()#."
!#()" B"0w"0/()"-()"!(#"+/,#"(«'",*" x,#"!#3,"(#""C",+>"(#"+/,#"01("23"0$"(# !"¡"
!(#"+/,#"01("23",*"#F:D"
Trang 4!"#$%&!')%*+,-.!)/)*0)*-12%3!%'%/-)4+5657!"*8!"'!%27)%!:;
)<=!"%9+*.!!">?)@A>B'%>?.'
]^QLMU_KLM`aQMbOcM`cdMQLeNM fWT\M VWV\M[gWY\M
{|}~~ 4}~
#$/)*0)*-12)B>')27)%!>+!*.!'->)%!"*8!"-!%
]vQnMffVM`uM`_QnMmQnMNQLMU_KLMQMKMg\M fVWYg¡¢MK£KMNO¤QnML¥iMmQnM¦JQL§M¨J©QMªcyQM
nJ«yMK£KM¬KMJUMLqQLMNL£JMKxyM`uM`_QnMmQnMN^QLMU_KLMQM®¯MmQnM¦JQLMO¥KMNLMLJ°QMNvQnM
±²QnMT§M
!"³$C0)*-12%3!%'%/-5657!"*8!"'!%27)%!:;´µ,-1>%-!*8!"-!%
C0)*-12'¶!'%·@!"¸ ¹º·»!"¼!½¸ C8!"-!%¼!½¸ H¸ ¾¸
ÀÃMbO¥QnMmQnMM
U_KLMQcoJ
ZWZZk
ÄJQMiLqQLMNQLMU_KLM
`aQMbOc
ZWZZV
]^QLMU_KLM`aQMM
bOcMQoQn
SMZWZZV
Trang 5!"#$%!&'!()! +,!-!.'!./012!(345! 6!78!
(9:01!3;<!='!">01!?#03!()@01!A8B!.'!./01!
">01!(C03!%/ 3!0D@!0E%!0F01!GHB2I7JK2 (9L01!(M! 6!HNI7!(9:01!3;<!0E%!OPQ!GR2BJKS T6!R7NAU7!-!.'!./01!?* 3!(39V !WV0!GX!R %K!='!
">01!?#03!GRH28YJKS Z'!./01!">01!(C03!%/ 3!0D@!='!">01!?#03!
(@01!036%! 6!03#[Q!3L0!=,! Q\01!%/ 3!0QF#! 3#]%!HINB^!()9:01!3;<!GRH2UIJK2!*(!3L0!=,!
Q\01! Q\01! 3#]%!HRNA7R!GA82U^JKSZ'!./01!
">01!(C03!%/ 3!0D@!='!">01!?#03!()@01!036%!
6!(C03!%/ 3!._0!W9Q!1#D0!<3`03!(345!ARNHY!
(9:01!3;<!G772^RJK2!()@01!036%!?3F01! 6!
1#D0!<3`03!Wa!RINAYH! 3#]%!GA^2HRJKS!>01!
?#03!()@01!036%!(C03!%/ 3!._0!W9Q!0F01!
3#]%!7BNABH!()9:01!3;<!GHBNRRJKS!b)@01!
036%! 6!03#[Q!(C03!%/ 3!._0!W9Q!(345!H8N88!
(9:01!3;<!GRY2RYJKS
c3P0!( 3!"L0!=#]0!<3\#!3;<!">01!?#03!&V#!
d !5]Q!(\!&'!*0F01!Gefg!Y2^^h!YIJ!TigH2RA!
j!7H2HK2!?* 3!(39V !WV0!3L0!R %!Gefg!R2IBh! YIJ!Tig!A2B^!j!B2A7K2!03#[Q!3L0!3,#!">01!
%/ 3!0QF#!Gefg!H278h!YIJ!Tig!A2H^!j!72BHK2 (03!%/ 3!._0!W9Q!1#D0!<3`03!Gefg!R287h!YIJ!
TigA28U!j^2H8K2C03!%/ 3!._0!W9Q!0F01!Gefg! A^27Yh!YIJ!Tig!H27H!j!AR727^K2! 6!(k!3,#!(C03!
%/ 3!._0!W9Q!(l!Wm0!Gefg!R2YRh!YIJ!TigH2UA!
j!B288K! 6!OM!?3d !=#n(! 6!o!013C,!(3\01!?m2!
G<!p!U2UIKS
Td !5]Q!(\! 6!o!013C,!()@01!<3P0!(* 3!"L0!
=#]0!"9; !(#]<!(q !<3P0!(* 3!",!=#]0!03E%!
<3P0!=#n(! 6!o!013C,!3L0!G=r01!7KS!s](!tQr!
<3P0!(* 3! Q\#! u01! 3@!(345! v0!W/#! 6!3,#! 5]Q!(\! 6!o!013C,!(3\01!?mg!.'!./01!">01!(C03!
%/ 3!0D@! 6!(k!3,#!03!%/ 3!._0!W9Q!(l!Wm0!
&a!(03!%/ 3!._0!W9Q!1#D0!<3`03S!
wxyz{|}~yĂÂ}ÊÔƠyƯÂƠ }Ày}Ă}ƠÂÊyzyzĂy}Â}y
Âyz}ÊyÔƠẢ}ƠyyzĐƠy}
bC03!%/ 3!._0!W9Q!1#D0!<3`03Á H287Á A2UI!j82I^Á
>01!%/ 3!0QF#!03#[Q!X!HÁ A27HÁ U28U!jR2RRÁ
đêôẶưẨẪơàẬÈẺẬẼ3Éô°ẬẸỀẺỂơẺàẾả·ÌỈã
Trang 6!"#!$%&' ()*+!+, !-./ (-.01 (!12 (3.01456-!7 (3%!,14-!89:;<;* (5<.=
-!>9&,/?+@)'- !)*+!;B CDE F ((1G ?&:5HI/J (;K+-.2
L# MN OP
O12 QEJ (1RJ+0+&S+&1T)+8E-.U+
)*+!5V1W1TE!1X IE8-!E9Y-
Z[\_`\a[\abcde\f\gh\i[\_jkl\`\a[\abcd\gnc\
oplc\qrc\spt]\upvr]\^t]\wuxj\culp\]^ycd\jxj\
cdumnc\jzp{\|]}~lcm\i\jcd\\ \cuc\]utv\
a[\abcd\qcd\]cu\bju\cy\p\]ucd\mp\
umhc\spt]\upvr]\c\qp{\dj\gbm]\\]xj\
dm\wuxj\]utv\spt]\upvr]\ucd\\cucd\`\a[\
abcd\c\ccd\icd\i\]uxm\acd\i\ju\
{dumnc\jzp\jkl\l^w\i\jcd\\ \juy\
]utv\wucd\j \i[\^c`m\m\nc\oplc\qrc\mp\
umhc\spt]\upvr]\wr]\gpc\cv\¡u\u¡\i¢m\wr]\
op\cdumnc\jzp\jkl\£ub\¤¥cd\¦zj\i\jcd\
\§ \i\j¨cd\¡u\u¡\i¢m\cdumnc\jzp\jkl\
ju©cd\]m{
ª_ju\]u¢j\`\a[\abcde\ªr]\op\¡uc\]_ju\
qc\mrc\i\ql\mrc\jkl\ju©cd\]m\ju«\l\^cd\
m\nc\oplc\dml\spt]\upvr]\i\`\a[\abcd\j \
w_ju\]u¢j\cu\uc\¬j\g\j \\cdul\]ucd\
wn\®¯°e\±²§³\²´µ¶e\±·±\¸\¬¹§º\cdj\gbm\
i¢m\w_ju\]u¢j\g¢c\uc{\dumnc\jzp\jkl\
£ub\¤¥cd\¦zj\i\jcd\\§ \i\jxj\cdumnc\
jzp\jkl\»y\|lc]y\i\jcd\\¹ \j¨cd\juy\
dmm\]u_ju\g\ay\a[\abcd\qcd\]cu\bju\cy\ w_ju\]u¢j\g¢c\]ucd\c\\icd\i\ccd\
g\i[\]^\]ucd\j \mp\umhc\qcd\wmcu\i\jxj\ ap\umhp\]uc\wmcu\wup\]©{\½pv\cumnc\j¨cd\j \ ]u\dmm\u_ju\^cd\a[\abcd\qcd\]cu\bju\cy\ w_ju\]u¢j\g¢c\uy¾j\cu\j \jcd\cdpv\j\ spt]\upvr]\cucd\cucd\]`c\]ucd\cu\j \ ]u\_]\mp\umhc\]^hp\juzcd\wuxj\®cu\qcd\
wmcu\qlp\qp{{\ay\q \ju©cd\]ucd\mp\
umhc\cd\]mhp\juzcd\spt]\upvr]\uc\¬ {
½cu\bju\a¿c\gpe\ycd\wr]\op\¡uc\]ju\ ql\mrc\jkl\ju©cd\]m\juy\]utv\j \m\]cd\ oplc\j \\cdul\dml\]cu\bju\a¿c\gp\apv\ cut]\i¢m\spt]\upvr]{\ªr]\op\cv\j¨cd\¡u\ u¡\i¢m\cdumnc\jzp\jkl\£ub\¤¥cd\¦zj\i\ j{\i\jxj\cdumnc\jzp\wuxj\³\¹ {
¤À¡\]cu\bju\g\]\vrp\]\cdpv\j\spt]\ upvr]\j¨cd\qj\c m\qrc\]^ycd\jxj\cdumnc\ jzp{\¦m¼p\cv\j \]u\g\ay\]Ácd\x¡\gj\qcd\
bju\ \i\wr]\op\cv\j¨cd\¡u\u¡\i¢m\ cdumnc\jzp\jkl\ju©cd\]m{\dpvnc\cuc\uÀ¡\ ]cu\bju\j \]u\g\ay\]Ácd\mcu\cm\bju\ay\
¡uc\zcd\i¢m\aÂcd\juv\]j\q\jly\uy¾j\x¡\
gj\jly\]^ycd\]cu\bju\uÀ¡\ay\juÃc\Ä¡\]Å\
Trang 7!"#$%&"'%&"()*"+,-%&".$"&/0"&1" !"
2%("#4("&56%"789: "
;<=>?@A>B<CADEDFGDF<HI DJ@KLMD INDOPQ<DEDR<H@O<S>FT>BU<>O
VW%&"X5%("2(,Y%&"Z$"[5\]"(5^%"Z_#"`$%&"
&*0"%(5a]"2('"(!5"`!]"(bc"#d]"%W5"`e:"fg)%&"
%&(5h%"']"%$ci"j"Z^"(k%&"2l5"&*0"mW%&"X5%("
Z$"noipqr:"s(,".tci"`u"Z^]" !"(k%&"2l5"0(v"
(w0".x5"d"2d"&5b"2gh%:"f]c"%(5h%i"2j"Z^"%$c"
X(l%&"b%("(,y%&"2x5".5^"0(_%"2z("m-%"[5{%"
.$"m!"[5{%"m\"2|#"g!"#u5"Z5h%"}]!%"1"~"%&(3!"
&5!"d"c{]"2u"/]"2gk"#4(".$"mW%&"X5%(:"
{2"}]b" !"(k%&"2l5"()"2(/c"1"(!5"c{]"2u"
/]"2gk"#4("Z5h%"}]!%"1"~"%&(3!"m{%"/]"
(5^]"mW%&"X5%("m1"Z$"""4%&"1"2"(!5"23%("
#4(" %"Z,]"2y"Zh%""ni8"roinq"
"i".$"23%("#4(" %"Z,]"&56%"0(|%(""
niq"roi"i:fgh%"2({"&5x5"m6"1"
%(5a]"%&(5h%"']".a"./%"ma"%$ci"2]c".tc"X{2"
}]b"2(]"m,w"Z$"g/2"X(d"%(!]:"
f]g#!%".$"W%&"`"79"%(t%"2(/c"g%&"1"
#W2"`u"c{]"2u"/]"2gk"#4("Z5h%"}]!%"1"~"
%&(3!"m{%"[5\]"(5^%"mW%&"X5%(i"m1"Z$""4%&"
mW%&"2%("#4("%6)"%#"y".v%&"."""4%&"
m,w"%]l5"[y5"mW%&"#4("%6)"&5!"mW%&"
#4("%]l5"%l%&"X(l%&"1"0(|%("#4("m5"
X#"0(|%("&56%"2%("#4(" %"Z,]:"g!)g"
7n9i"%(t%"2(/c"g%&"X(l%&"1"`"Z5h%"}]!%"
&5!"."z&5b5"0( ]" !"""4%&".$"[5\]"(5^%"
mW%&"X5%(:"%"(".$"W%&"`"2(|"X{2"Z]t%"
g%&"""4%&"y"2(vc"2(d5",-%&"Zh%"}]!%"1"
~"%&(3!".x5"[5\]"(5^%"mW%&"X5%("7o9:"Vu5".x5"
/]"(5^]"&56%"23%("#4(" %"Z,]i"2()"f]g
#!%".$"W%&"`"79"("1"~"%&(3!"X(5"%&(5h%"
']"v%&".x5"d"c{]"2u"X(d:"(5"md%("&5d"
gh%&"g"c{]"2u"%$c"2(|"X(l%&"2|#"2(/c"`"Z5h%"
}]!%"1"~"%&(3!".x5"mW%&"X5%(:"
¡¢£;¤
{2"}]b"%&(5h%"']"()"2(/c"#W2"`u"c{]"2u"
0(u5"(w0".x5"[5\]"(5^%"+]/2"(]c{2" !""4%&"
mW%&"2%("#4("%6):"¥W2"""4%&"Xz("2(,x"
%("¦"8"#i"23%("#4(" %"Z,]"]c"%(/2".$" (§0"23%("#4(" %"Z,]"Z$"%(%&"m*"m5\#"1"
%&]c"-"+]/2"(]c{2:"s(%&"""4%&"1"2"" (!5"23%("#4(" %"Z,]"2gy"Zh%".$"23%("#4("
%"Z,]"&56%"1"Z5h%"}]!%".x5"2g^]"('%&" mW%&"X5%(:"
;¨<D©I ª>
«5%"b#"-%"0(%&"!%"2(5^0"#4(i"X()!"
(¬%"m)d%"(|%("b%("[^%(".5^%"4("¥!5"m6"
24)"m5a]"X5^%"()"(k%&"2l5"2("(5^%"ma"2$5"
%$c:"«5%"(_%"2($%("b#"-%"%(%&"[^%("%(_%" m6"2(!#"&5!".$)"%&(5h%"']:"
®; ¯°±¢²³
´¡ µB>AL¶ ·¸¡;¡·<¹LµK; º»¼¼½¾:
¿5!Z"!g2g5).%)]`"#!Z)g#!25)%`"5%"%2g!g!
%5!Z".!`]Z!g"#!Z)g#!25)%`"!%"!%]gc`#:" ĂÂĐÊÔƠƯĐi8"n:"
»¡ LAÌỈµL¶·¡±¡·´ĨÍỊ¾¡Ìg2g5).%)]`"
#!Z)g#!25)%`")"2("[g!5%"%!2]g!Z"(5`2)gc"5%" ]%)0g!2"0!25%2`:"Í4ỮĐÏÐ4ỮĐÏÑÎĐƠÒÑÓ ÔÕỀ×ĐÓØ"½Ĩº´¾·o"o:"
Ù¡ <¹LµK·;¡·¡µB>AL¶·;¡¸Ú¹ÛÛ
º»¼¼½¾¡g[g!Z"!g2g5).%)]`"#!Z)g#!25)%`"
.!Z]!25)%")"("(#)gg(!&5"g`X"!%"5`"#)g [552c:"Í4ỮĐÏĐÖÜÊÏÐiÙ´ºÝ¾·8"8p:"
½¡ ¸K¹ỈA><·±¡° º»¼¼»¾¡Ì%&5)!g(52
2]g!Z"!2)g`"0g`%2"5%"[g!5%"!g2g5).%)]`"
#!Z)g#!25)%`"!``)5!2"52("(#)gg(!&5" 0g`%2!25)%:"Ă×ĐÏÞƯi"ÙÙº½¾·n"nq:"
Ý¡ AKAỈ· ß º´ĨĨă¾¡"Ì%&5)!g(522]g"
!``)5!2"52("(!#)gg(!&"5%"g[g!Z"!g2
g).%)]`"#!Z)g#!25)%`"!"0g)&%)`25"`2!25`25
!Z"#)Z:4ỮĐÏĐÖÜÊÏÐÏƠÓi"ÙĨº´¾·n":" Ị¡ ±AâK· º´ĨĨݾ¡đ2!Zê"5`"!%"]%`2![
Z`("#(!%5`#")g"2("Z5%5!Z"0g`%2!25)%" )" g[g!Z" !g2g5).%)]`" #!Z)g#!25)%`:" Ă×ĐÏÞƯi»Ịºă¾·ono"onn:"
Trang 8! "#$%&'()*+ "#$,-&"
".&'+/012&"3&"456768!9:;<=>?<@A<;B?<
@D;<EF;G<HIJK<L?MK<N>K<OIP?<GIQK<R?B@<G?=>@<
;SM<TU<TFKV<NWKV<@XKG<EF;G<KYZ[<3\]^_`6
_a^b_c^_de_f< g6458+hi<jhh[<
k! lm&nop+,!/4566q8!rKVIZMC;GI@s;j
@?Cs<MKT<;HIKI;MH<tCsusK@M@IZK<Zv<OCMIK<MC@sCIZj
wsKZ?u<EMHvZCEM@IZKu[<xyz5{|y}]~z|by<
458+ <ji[<
q! $m&+47qqg8!tIHstu=<MuuZ;Ij M@sT<I@G<;sCsOCMH<MC@sCIZwsKZ?u<EMHvZCEMj
@ZKu<M<E?H@wMCIM@s<MKMH=uIu<Zv<MKVIZMC;GI@s;j
@?CMH<;GMCM;@sCIu@I;u[<x5 x 5{|y}y}f 74568+h<jh[<
76!"+!l!+,!!--nm47qq78!
s;ZKTMC=<stIHst@ZVsKsuIu<IK<;sCsOCMH<MC@sCIZj wsKZ?u<EMHvZCEM@IZKu[<xy^_5{|y}f<k4778+
ii<ji[<
l$$m
/ l /
l l , l / / l l
, /l
<
Gs<t?CtZus<Zv<@GIu<u@?T=<Mu<@Z<Muusuu<@Gs<MuuZ;IM@IZKu<Os@ssK<;HIKI;MH<tCsusK@M@IZKu<Zv< GsEZCCGMVI;<MKT<stIHstu=<Zv<Gs<OCMIK<r ¡<MKT<@GsICMKVIZMC;GI@s;@?Csu[<@?T=<Mu<tsCvZCEsT<M@<
¢M;G<¡MI<GZutI@MH<ZC<<=sMCuf<ZE<£ii<@Z<¤£ii¥GsCs<MCs<ii<tM@IsK@u<I@G<r ¡u<IK;H?Tj
IKV<i<OCMIK<GsEZCCGMVsu<MKT<¤<tM@IsK@u<I@G<stIHstu=[<Gs<MKVIZMC;GI@s;@?Csu<Zv<@Gs<KIT?u<<
IK;H?TIKV<HZ;M@IZKf<EsMu?CsEsK@f<vssTIKV<MC@sCIsuf<TCMIKMVs<wsIKu<sCs<TZ;?EsK@sT[<GIu<u@?T=< u?VVsu@u<@GM@<r ¡u<I@G<uEMHH<KIT?uf<uIKVHs<TCMIKIKV<wsIK<MKT<wsKZ?u<u@sKZuIu<sCs<uIVKIv;MK@< MuuZ;IM@sT<vsM@?Csu<vZC<GsEZCCGMVI;<tCsusK@M@IZK[<¦@<MHuZ<u?VVsu@u<@GM@<r ¡u<I@G<E?H@tHs<MKT<
TIHM@sT<TCMIKIKV<wsIKu<sCs<uIVKIv;MK@<MuuZ;IM@sT<vsM@?Csu<vZC<stIHstu=[<
§¨o©pª«m-&mn-o&op$m¬o$mn-o&p+m&'-om*"-n*nm¬mnp+"$o"m'-*
®p&nmn-o&+®-¬®p