Assessment of Reperfused Acute Myocardial Infarction with Two-Phase Contrast-enhanced Helical CT: Prediction of Left Ventricular Function and Wall Thickness

Abstract

Two-phase contrast-enhanced CT proved useful in predicting LV functional recovery and WT in patients who had experienced acute MI and undergone successful angioplasty.

The Effects of Trimetazidine on the Enhancement Pattern of Multi-detector Computed Tomography in a Porcine Myocardial Infarction Model

“…On the other hand, LE might correspond to the muscle layer where the blood supply was preserved to some degree, indicating the possibility of residual myocardial viability. [16][17][18][19] Cardiac MRI is the standard for evaluating the delayed enhancement of myocardium, and evaluating the delayed enhancement by MDCT is still under investigational study. There are few reports on the enhancement pattern of MDCT after four weeks of MI.…”

“…2, 3). [16][17][18][19][20][21] The axial images were reconstructed at multiple phases that covered the cardiac cycle in increments of 10% of the RR interval between 5% and 95%. Multiphase reconstruction was performed using short axis slices from the base to the apex of the heart with using commercially available software(Argus ® , Siemens).…”

Evaluation of myocardial infarction patients after coronary revasculation by dual-phase multi-detector computed tomography: Now and in future

“…Dual source CT reduces beam-hardening artifacts significantly by use of monochromatic image handling technology, and further improves the accuracy of myocardial perfusion quantification [11] . Dynamic time phases may be useful in prediction of myocardial perfusion defects [12] , which may be related to left ventricular functional recovery in patients with acute myocardial infarction [13] . Injection of adenosine before scanning has also been an well-accepted pharmacological stress method for detecting reversible myocardial ischemia [14] .…”

Computed Tomography in Assessment of Myocardium Viability in Patients With Acute Myocardial Infarction Following One-Year Observation

“…В экспериментальных и клинических ис-следованиях было показано, что КТ-признаками нежизнеспособного миокарда в зоне инфаркта являются два типа контрастирования в отсро-ченную фазу: отсроченное гиперконтрастиро-вание (ОГК) с зоной резидуального дефекта контрастирования (РДК) и трансмуральное ОГК миокарда [8,9,11,17]. Трансмуральное ОГК происходит вследствие накопления контрастно-го препарата в поврежденных миоцитах, а наличие одновременно ОГК и РДК характерно P П для стойкого нарушения микроциркуляции в зоне некроза [8,11,17].…”

“…Трансмуральное ОГК происходит вследствие накопления контрастно-го препарата в поврежденных миоцитах, а наличие одновременно ОГК и РДК характерно P П для стойкого нарушения микроциркуляции в зоне некроза [8,11,17]. Если в инфарктной зоне определяется небольшой РДК при отсут-ствии ОГК, такой тип контрастирования может свидетельствовать о жизнеспособном миокарде [11].…”