| roentgenologist | A person skilled in the diagnostic or therapeutic application of roentgen rays; a radiologist. (05 Mar 2000) |
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| roentgenology | <specialty> Radiology is also known as roentgenology after Wilhelm Conrad Roentgen who discovered X-rays in 1895. Both terms refer to the science of radiation, both ionizing (like X-ray) and nonionizing (like ultrasound), applied to the diagnosis and treatment of disease. (12 Dec 1998) |
| roentgenometer | 1. A forestaff. 2. <physics> An instrument designed for measuring the mechanical effect of radiant energy. It consists of a number of light discs, blackened on one side, placed at the ends of extended arms, supported on an a pivot in an exhausted glass vessel. When exposed to rays of light or heat, the arms rotate. Origin: L. Radius radius: cf. F. Radiometre. Source: Websters Dictionary (01 Mar 1998) |
| roentgenometry | Measurement of an administered therapeutic or diagnostic dose and the penetrating power of X-rays. Synonym: X-ray dosimetry. (05 Mar 2000) |
| roentgenoscope | <instrument, radiology> A fluoroscope is an imaging device that uses X-rays to view internal body structures on a screen. (09 Oct 1997) |
| roentgenoscopy | <radiology> An X-ray procedure that makes it possible to see internal organs in motion. (12 Dec 1998) |
| roentgenotherapy | <oncology> The treatment of disease by ionising radiation. Origin: Gr. Therapeia = cure (18 Nov 1997) |
| Roesler-Bressler infarct | Infarction involving the septum along with both inferior and anterior walls to make an H-or dumbbell-shaped configuration. Synonym: Roesler-Bressler infarct. (05 Mar 2000) |
| roestone | <chemical> Same as Oolite. Source: Websters Dictionary (01 Mar 1998) |