CAJ | 학술논문

目的：评估脑转移瘤患者治疗前常规增强 MR扫描和伽玛刀治疗所采用的薄层增强MR扫描检测脑转移瘤数量之间的不同。方法转移瘤的数量在治疗前和治疗中两次扫描图像上分别由2名医生确定，研究分析的两次 MR图像间隔时间为4周以内。常规的增强MR扫描为层厚6 mm间隔2 mm，伽玛刀定位增强MR扫描是采取对刚性固定框架进行3．0 mm薄层无间隔扫描。结果1336名患者中41．2％的患者在伽玛刀定位时发现转移瘤的数量增加，而数目相同者占58．8％，检测出从单发转移增加到多发转移占13．8％。在结直肠癌、食道癌病例中，单发转移的比例为66．2％，高于其他恶性肿瘤患者。结论大约有40％的患者在伽玛刀定位薄层图像扫描中发现转移瘤的数目增加，脑转移瘤患者的薄层MR增强扫描应当常规使用。
목적：평고뇌전이류환자치료전상규증강 MR소묘화가마도치료소채용적박층증강MR소묘검측뇌전이류수량지간적불동。방법전이류적수량재치료전화치료중량차소묘도상상분별유2명의생학정，연구분석적량차 MR도상간격시간위4주이내。상규적증강MR소묘위층후6 mm간격2 mm，가마도정위증강MR소묘시채취대강성고정광가진행3．0 mm박층무간격소묘。결과1336명환자중41．2％적환자재가마도정위시발현전이류적수량증가，이수목상동자점58．8％，검측출종단발전이증가도다발전이점13．8％。재결직장암、식도암병례중，단발전이적비례위66．2％，고우기타악성종류환자。결론대약유40％적환자재가마도정위박층도상소묘중발현전이류적수목증가，뇌전이류환자적박층MR증강소묘응당상규사용。
Objective To evaluate differences in the numbers of brain metastases between thin-slice MR for gamma knife and conventional contrast-enhanced MR .Methods The numbers of metastases on the 2 images were counted by two doctors .Images from 1336 patients with an interval between the 2 MR studies of 4 weeks or less were analyzed .Conventional contrast-enhanced MR was 6 mm slice thickness and interval of 2 mm ,for gamma knife planning ,3 mm slice No interval scanning were taken under rigid frame fixation .Results Increases in the number of metastases were found in 41.2%of the 1336 patients,whereas the number was identical in 58.8%.An increase from single to multiple metastases was found in 13.8%.In cases with colorectal cancer and esophageal cancer ,the proportions of patients with a single metastasis 66.2% were higher than that of patients with other malignancies .Conclusions In about 40% of the patients , an increased number of metastases are found on the thin-slice images .Brain metastases from this to determine clinical treatment strategies have important significance .Therefore patients with brain metastases of thin-slice contrast-enhanced MR scanning should be used as convention .