الفهرس 
Tetralogy of FallotOnly 14 pages are availabe for public view
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Abstract
Background: Tetralogy of Fallot (TOF) represents 7–10% of congenital heart disease (CHD) occurring in 0.5/1000 live births and is the second most common form of complex CHD. The four elements of TOF: (a) subpulmonary obstruction resulting in (b) right ventricle (RV) hypertrophy, and (c) malalignment ventricular septal defect resulting in (d) apparent overriding of the aorta over both ventricles. CMR has a potential role for evaluation of the right ventricle in postoperative TOF.
Aim of the work: The aim of this study is to emphasize the role of CMR imaging in postoperative assessment and follow-up of Fallot patients, as well as postoperative assessment of possible complications related to surgeries.
Patients and Methods: This study was conducted on 30 patients of variable age groups that were collected from Ain Shams University Hospitals, who were referred to the radio diagnosis department after Tetralogy of Fallot operations as VSD closure with RVOT interventions either trans-annular patch or pulmonary artery conduit for follow-up by protocol-based cardiac MRI.
Results: Regarding the present study results that showed, majority of the patients 26 out of 30 representing (86.6%) with right ventricular dilatation. And less than one-third of the patients 7 out of 30 representing (23.3%) showed LV dilatation. The mean RVEDVI: LVEEDVI2 ratio was 1.84:1. Four patients had right atrium dilatation. Less than one-third of the patients 8 out of 30 representing (26.6%) had RV systolic dysfunction with the mean EF (± SD) was 51.83% (± 9.39). And more than one-third of the patients 11 representing (36.6%) had poor LV systolic function with the mean EF (± SD) was 56.13% (± 9.11). The majority of the patients 29 out of 30 (96.6%) had MPA regurgitation. More than half of the patients 18 out of 30 (representing 60%) had RVOT obstruction. The majority of the patients (25 representing 83.3%) had RVOT enhancement and 18 patients (60%) had base of IVS enhancement.
Conclusion: MRI is an extremely useful imaging method for the evaluation of normal and abnormal findings after surgical repair of Fallot tetralogy patients with absence of ionizing radiation, As noted, we have been able to effectively identify post-procedural anatomical and functional intra- and extra-cardiac information, thus allowing accurate diagnosis of postoperative complications, which will make an impact on further surgical management planning.