He was a brilliant teacher, an astute diagnostician and a gifted surgeon. Sister Doctor is described as beefy, with questionable credentials, but is an excellent diagnostician. The verb is "to diagnose, "and a person who diagnoses is called a "diagnostician". He was considered a skilled diagnostician and praised for his ability to treat difficult cases. The diagnostician must rule out&colon; TIAs, and paroxysmal vestibular disorder accompanied by headache. As his medical practice expanded, Wegeforth became known as a diagnostician. He credited his favorite uncle, an X-ray diagnostician, with introducing him to mathematics. Maurizio Seracini (1946) is a diagnostician of Italian art. The device has been field-tested in Thailand and reportedly outperformed the average human diagnostician. Eventually Nancy joined Centocor as a bench-level diagnostician. Thirteen has been compared often with Allison Cameron, the previous female diagnostician. This article uses "diagnostician" as any of these person categories.