Normal measurements in angiography of the posterior fossa.
A quantitative study of the normal position of the vessels of the posterior fossa was made. The centroid proved to be the most accurate reference point for vessels near the midline. The presence or absence of antomical constraints is important in evaluation in significance of an unusual measurement. A combination of unusual measurements which are not intercorrelated and which make sense anatomically suggests that a mass is present.
D000792:Angiography; D001158:Arteries / Q000033:anatomy & histology; D002508:Cephalometry; D003388:Cranial Fossa, Posterior / Q000033:anatomy & histology / Q000098:blood supply / Q000000981:diagnostic imaging*; D006801:Humans; D012886:Skull / Q000000981:diagnostic imaging*; D014680:Veins / Q000033:anatomy & histology