Abstract #4804

Evaluate the Feasibility of Delayed Contrast Extravasation MRI to Delineate Sub-volume Target in brain tumors Radiotherapy.

Yinxing Wang¹, Guanzhong Gong¹, Weiqiang Dou², Weiyin Vivian Liu², and Yong Yin¹

¹Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China, ²GE Healthcare, MR Research China, Beijing, China

Delayed contrast extravasation MRI (DCEM) could could differentiate regions of contrast agent clearance as an active tumor from regions of contrast agent accumulation as non-tumor tissues. By comparing the sub-volume of active tumor and non-tumor from DCEM with non-liquefaction necrosis and liquefaction from T2WI, our results showed that compared to liquefaction necrosis regions of the T2WI, the DCEM has advantages in distinguishing liquefaction area and could clearly differentiate sub-volume of active tumor from non-liquefaction. The application of DCEM was thus feasibly to guide the delineation of sub-volume target in brain tumor.

How to access this content:

For one year after publication, abstracts and videos are only open to registrants of this annual meeting. Registrants should use their existing login information. Non-registrant access can be purchased via the ISMRM E-Library.

After one year, current ISMRM & ISMRT members get free access to both the abstracts and videos. Non-members and non-registrants must purchase access via the ISMRM E-Library.

After two years, the meeting proceedings (abstracts) are opened to the public and require no login information. Videos remain behind password for access by members, registrants and E-Library customers.

Click here for more information on becoming a member.