Stereotactic body radiation therapy for prostate cancer is a highly precise radiotherapy. Post-implant MR is important for target localization, contouring and treatment planning. A phantom was designed to investigate the susceptibility caused by gold seeds in different orientations relative to B0 field. 2D and 3D acquisition scheme at various resolution, bandwidth and frequency-encoding directions were examined. Our results show that for reduction of susceptibility artifacts and excessive local signal loss, resolution of higher than 0.5mm is recommended, increasing bandwidth with sufficient resolution is more practical than changing frequency-encoding directions. 3D is comparable to 2D sequence in susceptibility artifacts.
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.
Keywords