Sakoda creates software that makes use of medical imaging, databases, network communications combined with a good knowledge of physics and mathematics to create applications to assist with a range of situations.
Examples of software written for assisting Medical Physics in a Radiation Oncology department is to perform Quality Assurance, to provide evidence that a radiation treatment will be delivered as expected. This will involve either direct measurement or providing an independent estimate to validate a process.
The picture above shows an intensity modulated arc dose distribution from three arcs to treat three targets at the same time. The plan was developed using Monaco® (a product of Elekta), a Monte Carlo based dose calculation engine for a Siemens Artiste® linear accelerator, while the comparative dose pattern is generated using a much simpler algorithm as a QA check, where a set of estimated EPIDs if you wish to just confirm the plan or delivered EPIDs, if you wish to confirm the delivery. These EPID images have then been back projected into the same structure set utilizing the same CT information for density correction as the initial plan for a comparative isodose distribution.
Below are a series of binned CT images at the same couch position at different breathing phases. The location in time each phase was captured is marked on the breathing wave form – in the example given the patient held their breath, thus the motion may not be representative of routine breathing. Each breath during the course of the CT scan has been grouped while the breath for the scan on display is highlighted in bold.
