中华超声影像学杂志
中華超聲影像學雜誌
중화초성영상학잡지
CHINESE JOURNAL OF ULTRASONOGRAPHY
2010年
4期
277-280
,共4页
陈玉媛%谢明星%王新房%吕清%王静%贺林%帅欣欣%李静雅%段利科%李薇玢
陳玉媛%謝明星%王新房%呂清%王靜%賀林%帥訢訢%李靜雅%段利科%李薇玢
진옥원%사명성%왕신방%려청%왕정%하림%수흔흔%리정아%단리과%리미분
超声心动描记术%心力衰竭,充血性%心室功能,左%斑点追踪技术
超聲心動描記術%心力衰竭,充血性%心室功能,左%斑點追蹤技術
초성심동묘기술%심력쇠갈,충혈성%심실공능,좌%반점추종기술
Echocardiography%Heart failure,congestive%Ventricular function,left%Speckle tracking imaging
目的 探讨二维斑点追踪成像(speckle tissue imaging,STI)评价射血分数正常的舒张性心功能衰竭(diastolic heart failure,DHF)患者的左心室心肌局部收缩功能.方法 临床确诊的DHF患者与正常对照组各32例.分别存储胸骨旁左心室短轴基底水平、乳头肌水平及心尖水平连续3个心动周期的二维灰阶图像,使用Qlab7.0工作站进行脱机分析,记录上述三个短轴切面共18个节段径向收缩期峰值应变率;记录基底水平、心尖水平旋转角度峰值,计算左心室扭转峰值(Twist).结果 DHF组的各节段径向应变率曲线形态与正常对照组相似,两组内同一水平不同节段间的径向应变率峰值差异均无统计学意义(P>0.05).与正常对照组相比,DHF组左心室心尖水平前间隔、侧壁、后壁、下壁,乳头肌水平后壁、后间隔,基底水平后壁、下壁及后间壁的收缩期峰值应变率低于正常对照组(P<0.05).DHF组左心室心尖、基底水平旋转角度峰值及左心室整体扭转角度峰值均较正常组减低,但差异无统计学意义(P>0.05).结论 二维斑点追踪成像显示左心室射血分数正常的DHF患者早期存在局部心肌收缩功能异常.
目的 探討二維斑點追蹤成像(speckle tissue imaging,STI)評價射血分數正常的舒張性心功能衰竭(diastolic heart failure,DHF)患者的左心室心肌跼部收縮功能.方法 臨床確診的DHF患者與正常對照組各32例.分彆存儲胸骨徬左心室短軸基底水平、乳頭肌水平及心尖水平連續3箇心動週期的二維灰階圖像,使用Qlab7.0工作站進行脫機分析,記錄上述三箇短軸切麵共18箇節段徑嚮收縮期峰值應變率;記錄基底水平、心尖水平鏇轉角度峰值,計算左心室扭轉峰值(Twist).結果 DHF組的各節段徑嚮應變率麯線形態與正常對照組相似,兩組內同一水平不同節段間的徑嚮應變率峰值差異均無統計學意義(P>0.05).與正常對照組相比,DHF組左心室心尖水平前間隔、側壁、後壁、下壁,乳頭肌水平後壁、後間隔,基底水平後壁、下壁及後間壁的收縮期峰值應變率低于正常對照組(P<0.05).DHF組左心室心尖、基底水平鏇轉角度峰值及左心室整體扭轉角度峰值均較正常組減低,但差異無統計學意義(P>0.05).結論 二維斑點追蹤成像顯示左心室射血分數正常的DHF患者早期存在跼部心肌收縮功能異常.
목적 탐토이유반점추종성상(speckle tissue imaging,STI)평개사혈분수정상적서장성심공능쇠갈(diastolic heart failure,DHF)환자적좌심실심기국부수축공능.방법 림상학진적DHF환자여정상대조조각32례.분별존저흉골방좌심실단축기저수평、유두기수평급심첨수평련속3개심동주기적이유회계도상,사용Qlab7.0공작참진행탈궤분석,기록상술삼개단축절면공18개절단경향수축기봉치응변솔;기록기저수평、심첨수평선전각도봉치,계산좌심실뉴전봉치(Twist).결과 DHF조적각절단경향응변솔곡선형태여정상대조조상사,량조내동일수평불동절단간적경향응변솔봉치차이균무통계학의의(P>0.05).여정상대조조상비,DHF조좌심실심첨수평전간격、측벽、후벽、하벽,유두기수평후벽、후간격,기저수평후벽、하벽급후간벽적수축기봉치응변솔저우정상대조조(P<0.05).DHF조좌심실심첨、기저수평선전각도봉치급좌심실정체뉴전각도봉치균교정상조감저,단차이무통계학의의(P>0.05).결론 이유반점추종성상현시좌심실사혈분수정상적DHF환자조기존재국부심기수축공능이상.
Objective To evaluate the left ventricular(LV)twist and segmental peak systolic radial strain rate(SRr)by two-dimensional speckle tracking imaging(2D-STI),and to evaluate the systolic performance in diastolic heart failure patients(DHF)with a normal LV ejection fraction(LVEF).Methods Thirty-two consecutive patients presenting congestive heart failure and thirty-two healthy subjects were enrolled in this study.High frame rate dynamic two-dimensional images were recorded at the LV short-axis view,including basal,papillary muscle and apical planes.Segmental SRr,rotation(Rot)and twist angle were measured offline using Q-lab7.0 software.Results In DHF patients,the curve character of SRr was similar with the healthy subjects;there was no significant difference in SRr between different segments at the same level in both DHF patients and healthy subjects.In comparison with the control group,segmental LV SRr was reduced in the DHF patients(P<0.05),while the peak systolic LV twist was no significantly decreased.Conclusions Although LVEF in DHF patients was normal,segmental systolic function was still impaired in the early stage by 2D-STI.
