Comparative studies has been done on contrast, simplicity and side effect of three water soluble contrast medium, Abrodil (38 cases), 60% Conray (26 cases) and Megluminesalt of iocarmic acid (25 cases). The latter two we used since 1970 and the former used before.
As generally accepted, 60% Conray and Megluminesalt of iocarmic acid has better resalts than the other, but some patients complained severe haed ache, nausea and vomiting. By using 60% Conray, one patient caused slight cramp of the lumbar muscle and one had a slight fever.
Radiography in standing position using Megluminesalt of iocarmic acid revealed better results in level and contrast without any trouble of procedure and side effects. As proved in phantom experiment which we have done, the contrast medium diffuses just below the needle.
