The Pneumoencephalograph was phased out in the late 1970s when more modern neuroimaging equipment became available.
She does, however, vomit during the exorcism but slowly onto the bed and Merrin's stole.
However, in the penultimate scene of the first movie where Chris is given a friendly greeting by two priests, Regan gives one of them a kiss on the cheek, suggesting she has some memory remaining of Merrin and Karras and wished to give a posthumous thanks.
She is devoted to her mother, making clay animals as gifts for her and leaving a rose at her place at the kitchen table each morning.
Sunday, March 01, 2020 at her home in Monroeville, Alabama.
Imaging contrast was not part of this test but used in a test that was often performed along with the Pneumoencephalograph called an Angiograph in which contrast was introduced into the vascular system and x-rayed.
Linda Blair, who was only in a flimsy nightgown, says to this day she cannot stand being cold.
Blair's mother brought her in herself to try out for the role.