Anatomy and Slice Positioning (Tech)-Shunt lesions Simple and complex

Shunt lesions Simple and complex

Video Transcription

Video Summary

The transcript explains cardiac shunt lesions, distinguishing left-to-right from right-to-left shunts. Left-to-right shunts increase pulmonary blood flow and can cause ventricular dilation, while right-to-left shunts reduce pulmonary flow and cause cyanosis. Echocardiography is usually sufficient, but MRI helps when anatomy is unclear or when shunt significance needs quantification. MRI assessment uses Qp:Qs flow ratios and ventricular dilation, with interpretation depending on shunt location. Examples include ASDs, sinus venosus defects, LV-to-right atrium shunts, PDA, and combined shunts in series, where flow calculations become more complex.

Keywords

cardiac shunt lesions

left-to-right shunt

right-to-left shunt

MRI Qp:Qs

echocardiography