The inner brain can now be X-rayed accurately. The new process, by which a mixture of gelatine and an iodine compound is injected directly into cavities of the brain, was reported last week at Manhattan's Academy of Medicine by Drs. Harold H. Lefft and John Arthur MacLean Jr. of New York Post-Graduate Hospital.
Until this discovery, doctors had to be satisfied with shadowy pictures of the brain made in complicated fashion: the spinal cord was tapped and all the fluid slowly drained out from the ventricles—five lakes in the center of the brain. Then air was blown up the cord or...
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