Itchhaporia D, Cerqueira M D
Division of Cardiology (PHC-5), Georgetown University Hospital, Washington, DC 20007, USA.
Curr Opin Cardiol. 1995 Nov;10(6):650-5. doi: 10.1097/00001573-199511000-00015.
With the availability of new 99mTc perfusion tracers, nuclear cardiology imaging techniques can provide information on myocardial blood flow and left ventricular function from a single imaging session. Ejection fraction, regional wall motion, and changes in wall thickness can be measured and specificity can be improved by gating the images, without increasing the acquisition time. Similarly, the ability to use conventional gamma cameras to image important positron-emission tomography radiotracers, such as fluorodeoxyglucose, allow cost-effective and widespread applications of positron-emission tomography technology. Thus, new radiotracers and imaging techniques in nuclear cardiology provide incremental and cost-effective diagnostic information in the assessment of coronary artery disease.
随着新型99mTc灌注示踪剂的出现，核心脏病学成像技术能够在一次成像检查中提供有关心肌血流和左心室功能的信息。通过门控图像，可以测量射血分数、局部室壁运动和室壁厚度变化，且无需增加采集时间就能提高特异性。同样，使用传统伽马相机对重要的正电子发射断层显像放射性示踪剂（如氟脱氧葡萄糖）进行成像的能力，使得正电子发射断层显像技术能够得到经济高效且广泛的应用。因此，核心脏病学中的新型放射性示踪剂和成像技术在冠状动脉疾病评估中提供了更多且具有成本效益的诊断信息。
