Hi i'm 23 years old and i have a dilated right ventricle of 240ml is this really badly dilated? or just a normal finding? the ejection fraction is 51%

Need more parameters: Right ventricular size is calculated by taking the timing of measurement (contraction vs. relaxation of the heart), the size of person, & the method of measurement must be taken into consideration. The reason for evaluating the right ventricular size is important also. It's important to discuss implications further with a cardiologist, rather than us give misleading information, without details.