Nataliya Kovalchuk, PhD

Prior to clinical launch of the world’s first installation of MEVION S250-FIT combined with Marie® system we evaluated anatomical and dosimetric differences between conventional photon-based supine treatments and proton-based upright treatments for prostate c...

The Russian invasion of Ukraine has significantly disrupted radiation therapy (RT) services, highlighting the urgent need to replace Cobalt-60 machines and modernize infrastructure and training across 43 RT centers. In response, Help Ukraine Group (HUG) and R...

Amid ongoing war, Ukraine continues to maintain and modernize radiation therapy (RT) services. Between 2023 and 2025, 24 linacs were installed to replace aging, non-rechargeable cobalt units. While linacs offer clinical advantages, they require stringent dosi...

We developed a unified, fully automated, and open-source VMAT planning framework for three complex modalities: VMAT total body irradiation (VMAT-TBI), craniospinal irradiation (VMAT-CSI), and total marrow and lymphoid irradiation (VMAT-TMLI). The goal was to...

Total Skin Electron Irradiation (TSEI) is traditionally delivered with the patient standing at an extended source-to-surface distance, a position often intolerable for frail or compromised patients. While floor-based recumbent alternatives exist, they necessi...

Commissioning and performance validation of the world’s first ultra-compact upright proton therapy system and establish benchmarks for this novel treatment delivery paradigm.