In general, the interpretation of t

In general, the interpretation of tissue BOLD signal is complex as
several factors may affect the signal. However, in the interpretation
of the reduction in placental BOLD signal during uterine
contractions, increased oxygen extraction and a reduced maternal
blood volume in the intervillous space should be considered as
these parameters may affect the amount of deoxyhemoglobine
molecules present in the intervillous space and thus the placental
BOLD signal