99 Tc m-MIBI门控心肌断层显像与心血池显像测定左室射血分数的比较

Comparison of left ventricular ejection fraction（LVEF）measured by 99 Tc m-MIBI gated myocardial tomography imaging and gated blood-pool imaging

关键词:  ECToolbox  门控心肌断层  门控心血池 LVEF

Key words:  ECToolbox  gated myocar dial tomography  gated blood-pool  LVEF

摘要:

利用ECToolbox软件，比较99 Tc m-MIBI门控心肌断层显像测定左室射血分数（LVEF）与门控心血池显像测定结果的相关性，并探讨其影响因素。［方法］42例受检者，两周内行门控心肌断层显像和门控心血池显像。受检者分两组，A组：心尖或前壁基底部严重缺 血组，共7例；B组：包括其余所有受检者，共35例。［结果］42例门控心肌断层显像测定LV EF值(61.95±15.13)%，略高于门控心血池显像的测定结果（58.83±12.79）%，t值2.2 6，P＜0.05；两者相关系数r=0.81。A组病例门控心肌断层显像测定LVEF（57.29± 17.16）%，明显高于门控心血池显像（49.00±16.85）%，t值4.61，P＜0.01；B 组病例门控心肌断层显像测定LVEF（62.48±14.18）%，与门控心血池显像（60.80±11.10）%无明显差异， t值1.13，P＞0.05。［结论］利用ECToolbox软件测定门控心 肌断层显像的LVEF与门控心血池显像的测定结果有较好的相关性；对于心尖或前壁基底部 严重缺血的病人，结果误差较大。 

Abstract:

To explore the relationship between the left v entricular ejection fraction（LVEF）measured by 99 Tc m-MIBI gated my ocardial tomography imaging（used ECToolbox software）and gated blood-pool imaging. ［Methods］ Forty-two cases，7 cases with apex and the base of anteral wall severe myocardial ischemia was named group A，the rest was named group B，underw ent 99 Tc m-MIBI gated myocardial tomography imaging and gated blood-pool imaging within two weeks．［Results］ Two imagings had better correlation（r=0.81），but gated myocardial tomography imaging had high LVEF（61.95±15. 13） % versus (58.83±12.79)%， P <0.05．In group A，LVEF measured by gated myocardial tomography was obviously higher than that by gated blood-pool imaging（57.29 ±17.16）% versus (49.00±16.85)%，P<0.01．But in group B，LVEF by two ways had no difference（62.48±14.18）% versus (60.80±11.10)%，P>0.05. ［Concl usions］ There is better correlation between gated myocardial tomography imaging （used ECToolbox software）and gated blood-pool imaging in determining LVEF．But for patients with apex and the base of anteral wall severe myocardial ischemia ，the result is unreliable．