1. A light-sensitive or x-ray-sensitive substance used in taking photographs or radiographs. 2. A thin layer or coating. 3. A radiograph (colloq.).
absorbable gelatin f. a sterile, nonantigenic, absorbable, water-insoluble, thin sheet of gelatin prepared by drying a gelatin-formaldehyde solution on plates; used in the closure and repair of defects in membranes such as the dura mater or the pleura; it undergoes absorption over a period of 1 to 6 months.
bitewing f. a special packaging of radiographic f. that allows appendage of the f. package to be held between the occlusal surfaces of the teeth.
decubitus f. a radiograph exposed with the subject in the decubitus position; named for the side that is dependent.right or left lateral decubitus f;
horizontal beam f. a radiograph made with the central axis of the x-ray beam parallel to the floor, able to show an air-fluid level.
latitude f. wide-latitude f
panoramic x-ray f. in dentistry, a radiograph taken to give a panoramic view of the entire upper and lower dental arch as well as the temporomandibular joints.
plain f. a radiograph made without use of a contrast medium.
precorneal f. a protective f., 7 to 9 nm thick, consisting of external oily, intermediate watery, and deep mucoprotein layers.tear f;
right or left lateral decubitus f. decubitus f
scout f. a radiograph exposed before contrast medium is given, such as the preliminary film for an angiogram, urogram, or barium contrast gastrointestinal examination.scout radiograph;
f. speed the relative sensitivity of f. emulsion to light or radiation exposure; speed is inversely related to detail resolution.
spot f. a radiograph made during the course of an examination under fluoroscopic control, with a device attached to the fluoroscope.
tear f. precorneal f
wide-latitude f. f. that does not show large contrast differences with differences in exposure; the slope of the H and D curve is low.latitude f;
Browse Medical References: