有关18F-FDG PET/CT恶性淋巴瘤显像征象的解读，正确的是（）
A.对小淋巴细胞性淋巴瘤的探测优于弥漫性大B细胞性NHL
B.使用粒细胞刺激因子（GSF.后可提高恶性淋巴瘤骨髓浸润探测的准确性
C.治疗后，病灶对18F-FDG摄取减少或消失，而CT示淋巴结无缩小，提示恶性淋巴瘤早期治疗有效
D.对活动性淋巴瘤病灶的诊断价值与CT相当
E.对异常高代谢的淋巴结进行特异性定性诊断
参考答案：C
解析：小淋巴细胞性淋巴瘤的探测可出现假阴性的结果，对小淋巴细胞性淋巴瘤，18F-FDG PET只能探测到约50%的病灶。应用GSF可出现骨髓活性的普遍增高，进而影响到骨髓浸润与否的判断。对活动性淋巴瘤病灶的诊断价值，18F-FDG优于CT。淋巴结结核、淋巴结炎及淋巴瘤等均可异常摄取18F-FDG，故难以进行特异性定性诊断。恶性淋巴瘤治疗有效的早期阶段，病灶F-FDG代谢减低或消失，而病灶大小可无变化。综上所述，只有答案C正确，答案A、B、D、E均不正确。
| Another critical factor that plays a part in susceptibility to colds is age. A study done by the University of Michigan School of Public Health revealed particulars that seem to hold true for the general population. Infants are the most cold-ridden group, averaging more than six colds in their first year. Boys have more colds than girls up to age three. After the age of three, girls are more susceptible than boys, and teenage girls average three colds a year to boys’ two. The general incidence of colds continues to decline into maturity. Elderly people who are in good health have as few as one or two colds annually. One exception is found among people in their twenties, especially women, who show a rise in cold infections, because people in this age group are most likely to have young children. Adults who delay having children until their thirties and forties experience the same sudden increase in cold infections. The study also found that economics plays an important role. As income increases, the frequency at which colds are reported in the family decreases. Families with the lowest income suffer about a third more colds than families at the upper end. Lower income generally forces people to live in more cramped quarters than those typically occupied by wealthier people, and crowding increases the opportunities for the cold virus to travel from person to person. Low income may also adversely influence diet. The degree to which poor nutrition affects susceptibility to colds is not yet clearly established, but an inadequate diet is suspected of lowering resistance generally. |
Which of the following statements is NOT true according to the passage
A．The women having children show a rise in cold infections than those without children.
B．People with low income will surely more colds than people with high income.
C．Juniors are easier to have colds than seniors.
D．It has not been proved scientifically that poor nutrition affects susceptibility to colds.