A best-in-class linear accelerator is at the heart of our commitment to high-precision treatments. Our clinic offers the latest generation of medical linear accelerator Elekta Versa HD
As thorough treatment can only start with well-defined medical images, at Amethyst, we rely on high-precision imaging systems. Planning bases upon magnetic resonance imaging (MRI), computed tomography (CT), or occasionally PET scans have the potential to uncover disease characteristics that fail to be appreciated by the naked eye, hence contributing to more accurate diagnosis and better treatment decisions. This imaging is required to determine the exact size, shape, and position of the target.
High-performance treatment planning
The treatment planning system is at the heart of radiation therapy and key to improving patient outcomes. Amethyst uses a specially designed computer system to calculate a precise and accurate treatment plan based upon a patient’s magnetic resonance imaging (MRI), computed tomography (CT), or PET scans. The treatment planning system supports the most advanced treatment techniques, such as stereotactic VMAT. It offers Pareto Mode optimization with Monte Carlo fast computation performance, enabling our physicists and doctors to find the best and unique patient’s plan.
External Beam Radiation
This treatment method is well established and is generally quick and reliable. This technique delivers one or several beams of high-energy x-rays to a patient’s tumor to damage the genetic structure of cancer cells, blocking their spreading. Radiotherapy is a non-invasive treatment. Beams are generated outside the patient by a medical linear accelerator (also called Linac)
and targeted at the tumor location. The machine is large and can move around the patient
during treatment, sending radiation to a part of the body from many directions to concentrate them on cancer.
Advanced radiotherapy techniques aim to maximize the radiation dose that the tumor gets while minimizing the amount of radiation received by healthy tissues surrounding cancer. The duration of radiation therapy depends on the type of tumor being treated and whether radiation therapy aims to treat cancer or ease symptoms. Usually, external beam radiation is given to patients across several sessions spread out over time (several weeks), allowing healthy cells to recover between radiation therapy sessions.
The techniques we use:
Intensity Modulated Radiation Therapy (IMRT)
Volumetric Modulated Arc Therapy (VMAT)
Image Guided Radiation Therapy (IGRT)
Comprehensive Patient QA:
Plan Quality Checks
Independent Secondary Dose Checks
CT and CBCT Dose Reconstruction (Recalculation)
In-Vivo Monitoring verifies and tracks the dose throughout the treatment course. i.e., patient set up, first fraction, and intra-fraction motion against the treatment plan and each delivered fraction, either on the planning CT or daily CBCT images. Results can be analyzed in 3D using EPID and/or Log File data or in 2D through the Transit Dosimetry feature, with no additional time or effort required. Using calibrated EPID data, actual dosimetric In-Vivo Monitoring is clinically feasible, creating a fully independent absolute dosimetric QA of patient treatments.