影像學(xué)名詞解釋(中英英英)-在線瀏覽
2024-09-13 12:29本頁面
【正文】 aximal transverse diameter of the heart: summation of maximal diameter from left and right margin of the heart respectively to the mid line, and maximal width of the thorax: a horizontal line passing through the right diaphragmatic apex between inner edges of the thorax. maximum in adults: Degeneration of joint: degenerated and necrotic articular cartilage, replaced by fibrous tissues gradually. When the bony surface is involved, it can cause hyperostosis of the bone, which leads to rough articular surface, formation of osteophyte, and ossification of ligament. It is often seen in weightbearing or frequently used joints. Destruction of bone: Bone tissue elimination caused by sclerotin partly substituted with pathologic organism. Roentgenologically,it shows osteolytic bone areas of decreased density and loss of bone structures.Double contour: On PA film, the right border of an enlarged left atrium may produce an extra shadow superimposed on the right cardiac border, giving a double contour. Dural tail sign：which is a thickening of the dura adjacent to an intracranial pathology on contrastenhanced T1 MR Images, was first thought to be pathognomonic of meningiomaEarly gastric cancer : Early gastric cancer is define as carcinoma limited to the mucosa and submucosa regardless of the presence or absence of lymph node involvement. Epiphyseal fracture: occurs in children’s long bone, for the epiphysis has not linked with metaphysic, so they may separate when there is an external force acting. In plain film, the epiphysis and metaphysis are not in the normal place, or the epiphyseal plate is broader than normal. The fracture line does not exist. Filling Defect: Filling defect is caused by a space occuping mass producing defect on the barium . Fracture: a plete/ inplete break in the continuity of a bone or a cartilage. Inplete fractures include crack ~ and greenstick ~. Complete fractures include transverse, oblique, vertical, spiral, fragmented, impacted, pression , and avulsion ~. Greenstick Fracture:Greenstick fracture occur almost exclusively during infancy and childhood. It is not easy for external force to cause the bone cortex plete break because of its pliant, so this kind of fracture showed buckling of the cortex without fracture lines or a transver fracture occur in the cortex, extending into the midport of the bone and then orienting along the longitudinal axis of the bone without disrupting the opposite cortex. Hilar dance: under fluorescence, there will be an obviously enhanced pulsation of the hilar arteries in pulmonary hypertension, seen in congenital heart diseases with lefttoright shunt. Hyperostosis osteoscleroses: osteosclerosis is abnormal hardening or increased density of bone on radiographs Intrapulmonary air containing space: pathological distension of physiological space in the lung. It appears to be a round translucency with a smooth wall about 1mm in Xrays. such as bullae and air containing bronchial cysts.Inverted S curve sign: PA film, atelectasis of the right superior lobe, elevated horizontal fissure, hilar mass, central bronchogenic carcinoma i
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