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目的钡餐摄片观察食管癌大体肿瘤靶区(GTV)呼吸移动度。方法 30例食管癌患者分为三组:A组11例,肿瘤位于颈段和胸上段;B组10例,肿瘤位于胸中段;C组9例,肿瘤位于胸下段。口服钡餐摄片获得平静呼吸状态下吸气相、呼气相GTV图像,通过Eleka-iViewGT工作站比对,得出各组GTV在X、Y、Z轴方向的位移值。结果 GTV图像在X、Y、Z轴方向位移值:A组为(1.09±0.77)mm、(1.37±0.67)mm、(1.52±0.64)mm;B组为(1.84±1.06)mm、(2.11±1.28)mm、(3.07±1.60)mm;C组为(3.00±1.41)mm、(4.50±1.46)mm、(7.46±1.65)mm。A、B组在Y、Z轴方向位移值均小于C组(P<0.01);B组在Z轴方向位移值大于A组(P<0.05)。结论钡餐摄片可动态观察食管癌GTV移动度,临床可用于确定内靶区外扩范围。
Objective Barium meal radiography observation of esophageal cancer target area (GTV) respiratory mobility. Methods Thirty patients with esophageal cancer were divided into three groups: group A, 11 cases, the tumor located in the cervical and thoracic segments; group B, 10 cases, the tumor was located in the middle of the chest; in group C, 9 cases were located in the lower thoracic segment. Oral barium meal radiographs of inhalation phase, expiratory phase GTV images of calm breathing state, through the Eleka-iViewGT workstation comparison, the GTV in each group in the X, Y, Z axis displacement. Results The displacement of GTV images in X, Y and Z directions were (1.09 ± 0.77) mm, (1.37 ± 0.67) mm and (1.52 ± 0.64) mm respectively in group A, (1.84 ± 1.06) mm and ± 1.28) mm and (3.07 ± 1.60) mm, respectively; while those in group C were (3.00 ± 1.41) mm, (4.50 ± 1.46) mm and (7.46 ± 1.65) mm, respectively. The displacement of group A and B in the direction of Y and Z axis were less than that of group C (P <0.01). The displacement of group B in Z axis was greater than that of group A (P <0.05). Conclusion Barium meal radiography can observe the movement of GTV in esophageal cancer dynamically and can be used clinically to determine the extent of external target expansion.