This study evaluates the dosimetric feasibility of hippocampal-avoidance whole-brain radiotherapy (HA-WBRT) using IMRT compared to VMAT, with particular attention to clinical implementation in resource-limited settings. While 3D-CRT was used as a reference for conventional WBRT, the primary aim was to determine whether IMRT can serve as an effective and accessible alternative to VMAT for HA-WBRT in centers without advanced technology infrastructure. Ten patients undergoing WBRT for symptom relief were planned using 3D-CRT, IMRT, and VMAT on the Elekta Monaco 6.1.4 system. Key organs at risk (OARs) such as the optic nerves, chiasm, eyes, and lenses were considered in the treatment planning. Plans were evaluated based on PTV dose distribution, Conformity In-dex (CI), Homogeneity Index (HI), and OAR dose constraints (RTOG 0933, NRG-CC001). Gamma pass rate analysis was performed for IMRT and VMAT plans. Results showed that IMRT and VMAT significantly reduced the hippo-campal dose compared to 3D-CRT, with similar PTV coverage and OAR sparing. The mean Dmax for the hippocampus was 15.4 Gy for IMRT and 15.6 Gy for VMAT, compared to 31.03 Gy for 3D-CRT. The D100% for the hippocampus was 7.4 Gy for IMRT and 7.6 Gy for VMAT, both well below the RTOG 0933 threshold of 9 Gy, while 3D-CRT delivered 30.55 Gy. Additionally, IMRT and VMAT delivered lower doses to the optic nerves and chiasm. QA results showed gamma pass rates above 95% for all plans. Hippocampal-sparing WBRT with IMRT and VMAT significantly reduces hippocampal dose while maintaining optimal PTV coverage. VMAT is preferred for its balance of efficacy, protection, and treatment time, while IMRT-9F is a viable alternative for facilities without VMAT, though it requires stricter dose control and longer treatment times.