| radiation of corpus callosum | The spreading out of the fibres of the corpus callosum in the centrum semiovale of each cerebral hemisphere. Synonym: radiatio corporis callosi. (05 Mar 2000) |
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| agenesis of corpus callosum | <radiology> Defect in dorsal portion of lamina reuniens, occurs about 10th - 12th week of gestation, may be complete or partial CT findings: parallel lateral ventricles, occipital horns dilated, deep falx, frontal horns C-shaped on coronal view associated with, Dandy-Walker cyst, encephalocele, Arnold-Chiari malformation, CNS lipoma (12 Dec 1998) |
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| genu of corpus callosum | The anterior extremity of the corpus callosum that folds downward and backward on itself, terminating in the rostrum. Synonym: genu corporis callosi. (05 Mar 2000) |
| peduncle of corpus callosum | A slender vertical whitish band immediately anterior to the lamina terminalis and anterior commissure; contrary to its name, it is not a cortical convolution but is the ventral continuation of the transparent septum. Synonym: area subcallosa, gyrus paraterminalis, gyrus subcallosus, pedunculus corporis callosi, corpus paraterminale, paraterminal body, paraterminal gyrus, peduncle of corpus callosum, precommissural septal area, subcallosal area, Zuckerkandl's convolution. (05 Mar 2000) |
| rostrum of corpus callosum | Beak of the corpus callosum, the recurved portion of the corpus callosum passing backward from the genu to the anterior commissure. Synonym: rostrum corporis callosi. (05 Mar 2000) |
| corpus callosum | <anatomy> A great commissure (connection) between the two cerebral hemispheres (right and left). (13 Nov 1997) |
| splenium of corpus callosum | The thickened posterior extremity of the corpus callosum. Synonym: splenium corporis callosi. (05 Mar 2000) |
| sulcus of corpus callosum | The fissure between the corpus callosum and the cingulate gyrus. Synonym: sulcus corporis callosi, callosal sulcus. (05 Mar 2000) |
| dorsal vein of corpus callosum | It originates on the superior surface of the corpus callosum and runs posteriorly to terminate in the great cerebral vein. Synonym: dorsal callosal vein, dorsal vein of corpus callosum, posterior marginal vein, posterior pericallosal vein. (05 Mar 2000) |
| occipital part of corpus callosum | Occipital radiation of the corpus callosum; that part of the fibre radiation of the corpus callosum which bends sharply backward into the occipital lobe of the cerebrum. Synonym: forceps major, forceps posterior, occipital part of corpus callosum, pars occipitalis corporis callosi. (05 Mar 2000) |
| trunk of corpus callosum | The main arched portion of the corpus callosum. Synonym: truncus corporis callosi. (05 Mar 2000) |
| frontal part of corpus callosum | Frontal radiation of the corpus callosum; that part of the fibre radiation of the corpus callosum which bends forward toward the frontal pole of the cerebrum. Synonym: forceps minor, forceps anterior, frontal part of corpus callosum, pars frontalis corporis callosi. (05 Mar 2000) |
| abnormalities, radiation-induced | Congenital changes in the morphology of organs produced by exposure to ionizing or non-ionizing radiation. (12 Dec 1998) |
| accidents, radiation | Accidental dispersal of radioactive materials from a radiation source. Accidents at nuclear reactors can involve large groups of the population from dispersion of radioactivity into the environment and through fallout or a few individuals with high injurious doses. (12 Dec 1998) |
| acoustic radiation | The fibres that pass from the medial geniculate body to the transverse temporal gyri of the cerebral cortex by way of the sublentiform part of the internal capsule. Synonym: radiatio acustica. (05 Mar 2000) |
| acute radiation syndrome | <syndrome> A syndrome caused by exposure of the body to large amounts of radiation, (e.g., from certain forms of therapy, accidents, and nuclear explosions; it is divided into three major forms which are, in ascending order of severity, the haematogic, gastrointestinal, and central nervous system-cardiovascular forms; its clinical manifestations are divided into prodromal, latent, overt, and recovery stages. (05 Mar 2000) |