| roentgenogram | <dentistry> Another name for an X-ray (08 Jan 1998) |
|---|---|
| roentgenograph | <dentistry> Another name for an X-ray (08 Jan 1998) |
| roentgenography | <investigation, procedure> The making of film records (radiographs) of internal structures of the body by passage of X-rays or gamma rays through the body to act on specially sensitised film. Origin: Gr. Graphein = to write (18 Nov 1997) |
| roentgenologist | A person skilled in the diagnostic or therapeutic application of roentgen rays; a radiologist. (05 Mar 2000) |
| 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) |
| rogation | 1. The demand, by the consuls or tribunes, of a law to be passed by the people; a proposed law or decree. 2. Litany; supplication. "He perfecteth the rogations or litanies before in use." (Hooker) Rogation days, the three days which immediately precede Ascension Day; so called as being days on which the people, walking in procession, sang litanies of special supplication. <botany> Rogation flower, a European species of milkwort (Polygala vulgaris); so called from its former use for garlands in Rogation week. Rogation week, the second week before Whitsunday, in which the Rogation days occur. Origin: L. Rogatio, fr. Rogare, rogatum, to ask, beg, supplicate: cf. F. Rogation. Cf. Abrogate, Arrogant, Probogue. Source: Websters Dictionary (01 Mar 1998) |
| Roger's bruit | A loud pansystolic murmur maximal at the left sternal border, caused by a small ventricular septal defect. Synonym: bruit de Roger, Roger's bruit. (05 Mar 2000) |
| Roger's disease | A congenital cardiac anomaly consisting of a small, isolated, asymptomatic defect of the interventricular septum. Synonym: maladie de Roger. (05 Mar 2000) |