in ten patients in whom thyroid activity was under tsh control ( parathyroidectomy and non-toxic goitre ) increased thyroid vein/carotid artery ratios ( tv/ca ) for rt3 ( mean tv/ca ratio 2.53 ) were found when compared to six patients with non-toxic goitre on suppressive doses of t4 ( mean tv/ca ratio , 1.27 ) ( p less than 0.05 ) .
C0040132
thyroid
C0221777
non-toxic