Correlation Analysis between Retention of Gd-DTPA in the Cystic Area of Brain Metastasis and MRI Signs

Jili Wang; Shanshan Qu; Qinyan Xu; Zhaofeng Jin; Tian Li; Shuxian Zhang; Xihe Sun

doi:10.1155/2022/2738892

Correlation Analysis between Retention of Gd-DTPA in the Cystic Area of Brain Metastasis and MRI Signs

J Oncol. 2022 Jun 18:2022:2738892. doi: 10.1155/2022/2738892. eCollection 2022.

Authors

Jili Wang^{1

2}, Shanshan Qu³, Qinyan Xu^{1

4}, Zhaofeng Jin⁵, Tian Li⁶, Shuxian Zhang^{1

4}, Xihe Sun^{1

4}

Affiliations

¹ Department of Medical Imaging, Weifang Medical University, Weifang 261653, China.
² Imaging Department, Shouguang People's Hospital, Shouguang 262700, China.
³ Ultrasonic Department, Weifang People's Hospital, Weifang 261000, China.
⁴ Imaging Department, Affiliated Hospital of Weifang Medical University, Weifang 261653, China.
⁵ Department of Clinical Psychology, Weifang Medical University, Weifang 261653, China.
⁶ School of Basic Medicine, Fourth Military Medical University, Xi'an 710032, China.

Abstract

Objective: The aim of this study is to investigate gadolinium-diethylenetriaminepentacetate (Gd-DTPA) retention in the cystic area of brain metastasis and its correlation with MRI signs.

Methods: Clinical and MRI data of 76 patients with brain metastasis in the cystic area were collected. The contrast signal intensity (CSI) of the cystic area and edema area in the plain scan, enhanced scan, and plain scan after enhancement within 1 month (hereafter referred to as "enhanced plain scan") were analyzed to determine whether Gd-DTPA was retained in these areas. The lesions with higher CSI values on the enhanced plain scan were classified as the Gd-DTPA retention group and the remaining lesions as the Gd-DTPA-free group. The two groups were compared to determine significant differences in primary lesion type, tumor size, tumor location, capsule wall thickness and morphology, peritumoral edema, and renal function.

Results: A total of 123 lesions were detected. The CSI of the enhanced plain scan exceeded that of the plain scan and enhanced scan in the cystic area (P < 0.05). There were 54 lesions (43.9%) with Gd-DTPA retention in the cystic area and 69 lesions (56.1%) without Gd-DTPA retention. Significant differences were observed in tumor size and cystic wall thickness between the two groups (P < 0.05), while no significant differences in primary lesion type, cystic wall shape, peritumoral edema, or function were observed.

Conclusion: The retention of Gd-DTPA was found in the cystic area of some brain metastases, which was correlated with tumor size and cystic wall thickness.