"H" is the peak radioactivity over the heart, and "P" the peak radioactivity over the liver. The cardioportal circulation time is measured between "H" and "P," and is about twenty-five seconds. "H" is ...

To the Editor: I have read with great interest Dr. Child's paper, "The Portal Circulation," which appeared in the May 19 issue of the Journal. I agree with most of his comments about the management of ...