Comparison of computed tomography and magnetic resonance based target volume in brain tumors.
Comparison of computed tomography and magnetic resonance based target volume in brain tumors.
复制标题
脑肿瘤中基于计算机断层扫描和磁共振的目标体积的比较。
DOI：
10.4103/0973-1482.34694
复制
发表时间：
2007
影响因子：
1.3
通讯作者：
G. Rath
中科院分区：
文献类型：
--
作者：
R. Prabhakar;K. Haresh;T. Ganesh;R. Joshi;P. Julka;G. Rath
目的
这项研究主要是为了研究在计算机断层扫描(CT)和磁共振(MR)上所看到的肿瘤体积的差异及其在计划中的意义。
材料和方法
本研究纳入25例接受立体定向放射治疗的不同诊断的脑肿瘤患者。所有患者均行CT和MR扫描，层厚2.5 mm。测量CT肿瘤体积和MR肿瘤体积，并进行比较。计算CT和MR上显示的肿瘤体积的质心，并确定两个质心之间的移位。
结果
MR测量肿瘤平均体积为19.67cc+/-13.73，中位数为16.13cc(范围：3.25cc~50.37cc)。同样，CT测量的肿瘤平均体积为15.05cc+/-10.13，中位数为11.63cc(范围：3.0cc-36.25cc)。CT和MR之间的CM平均偏移为5.47 mm，中位数为5.21 mm。
结论
研究表明，MR是计划脑肿瘤放射治疗中不可缺少的成像手段。
PURPOSE
This study was mainly framed to study the difference in tumor volumes as seen on computed tomography (CT) and magnetic resonance (MR) and their significance in planning.
MATERIALS AND METHODS
Twenty-five patients with brain tumor of different diagnoses who underwent stereotactic radiotherapy were included in this study. CT and MR imaging was done for all the patients with 2.5 mm slice thickness. The CT tumor volume and MR tumor volume were measured and compared with each other. The center of mass (CM) of the tumor volume delineated on CT and MR were computed and the shift between the two CMs was determined.
RESULTS
The mean and median volume of the tumor as measured from MR scans was 19.67 cc +/- 13.73 and 16.13 cc (range: 3.25 cc-50.37 cc). Similarly, the mean and median volume of the tumor as measured from CT scans was 15.05 cc +/- 10.13 and 11.63 cc (range: 3.0 cc-36.25 cc) respectively. The mean and median CM shift between CT and MR was 5.47 mm and 5.21 mm respectively.
CONCLUSION
The study demonstrates that MR is an indispensable imaging modality in radiotherapy for planning brain tumors.
影响因子：
5.7
作者：
TENHAKEN, RK;THORNTON, AF;MCSHAN, DL
通讯作者：
MCSHAN, DL