Differential Effect of the Ratio of Right Ventricular Volume to Left Ventricular Volume in Children with Repaired Tetralogy of Fallot.

We aimed to compare the diagnostic value of indexed right ventricular end-diastolic volume (RVEDVi) and the ratio of right ventricle volume to left ventricle volume (RV/LV ratio) in prediction of the severity of pulmonary regurgitation (PR) expressed as the PR fraction (PRF) after surgery of tetralogy of Fallot (TOF). Forty-one patients with repaired TOF were included in the study. RVEDVi, LVEDVi, RV/LV ratio, PRF and ejection fraction were measured with magnetic resonance imaging.

[Preliminary application of magnetic resonance susceptibility weighted imaging in neonates with punctate white matter lesions].

Objective: To evaluate the severity of punctate white matter lesions (PWML) in neonatal brain injury with susceptibility weighted imaging (SWI) and explore the value and limitation of SWI versus the conventional magnetic resonance imaging (MRI).

Methods: A total of 34 neonates presenting with PWML at initial MRI were recruited for this prospective study. PWML were defined as punctuate lesions with T(1) hyperintensity and T(2) isointensity or hypointensity in white matter.