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在摄影技术中,MQ显影液(即以米吐尔与对苯二酚为显影主剂的显影液)已被采用了大半个世纪。MQ显影液虽有许多优点,但也有它的缺点,表现较为突出的是不能适应应急摄影。1940年,发现菲尼酮的显影性能以后,出现了以菲尼酮和对苯二酚为显影主剂的显影液,称为PQ显影液。 PQ显影液具有显影能力大、显影快、感光度较高、反差高、灰雾低等优点,在国外已广泛应用于X射线摄影术。国内目前也有不少医院放射科采用这种显影液,但还不十分普遍。
In photographic technology, MQ developers (ie, developing solutions based on Motell and hydroquinone as developing agents) have been used for more than half a century. Although there are many advantages MQ developer, but it also has its shortcomings, the more prominent performance is not adapted to emergency photography. In 1940, after discovering the developing performance of phenidone, a developing solution containing pheniquinone and hydroquinone as the main developing agent appeared and was called PQ developing solution. PQ developer with developing ability, fast development, high sensitivity, high contrast, low fog, etc., has been widely used in foreign countries X-ray photography. At present there are many hospitals in the radiology using this developer, but not very common.