Clinicians around the world are using Intensity Modulated Radiation Therapy (IMRT) to treat nearly every type of solid tumor. IMRT 'paints' the radiation dose onto the tumor with pinpoint precision. It uses 3-D scans of your body to guide the beams of radiation to the tumor from many different angles. At each of these angles, the intensity of the radiation is varied (modulated) and the shape of the beam is changed to match the shape of the tumor. These adjustments enable the prescribed amount of radiation to be delivered to each part of the tumor, while minimizing exposure to the surrounding healthy tissue. Important Safety Information: Radiation treatments may cause side effects that can vary depending on the part of the body being treated. The most frequent ones are typically temporary and may include, but are not limited to, irritation to the respiratory, digestive, urinary or reproductive systems, fatigue, nausea, skin irritation, and hair loss.

In some patients, they can be severe. Treatment sessions may vary in complexity and time.

Radiation treatment is not appropriate for all cancers. You should discuss the potential for side effects and their severity as well as the benefits of radiation with your doctor to make sure radiation treatment is right for you. Varian as a medical device manufacturer cannot and does not recommend specific treatment approaches. Individual treatment results may vary. .

Quality assurance (QA). Software introduced by Varian in 2001. Quality Assurance of IMRT delivery systems – Thomas LoSasso, PhD 4. Powerful IMRT QA software now provides even more enhanced features. LifeLine Software, Inc. Pctv Vision Software more. Eminem Rap God Mp3 Song. Announces launch of RadCalc version. Delivery Systems: IGRT, IMRT & QA. The complete integration of hardware and software not only makes Varian solutions safer and easier to use.

IMRT QA Equipment: PTW MultiCheck Therapy QA Software Software for constancy checks on medical linear accelerators with two-dimensional chamber arrays Beam parameters of medical linear accelerators should be determined regularly, and their constancy by time should be verified and recorded (see IEC 609761). The measurement of the complete radiation field with a two-dimensional detector facilitates the required procedures considerably, and minimizes the time needed for setup, measurement and data analysis. MultiCheck analyzes the data acquired with the PTW 2D-Array. The 2D-Array is positioned either on the patient couch or in a special gantry holding device, and a specific test field size is adjusted (22.4 x 22.4 cm2 or 26 x 26cm2, respectively). After the irradiation of the 2D-Array with approx. 1) Gy MultiCheck displays the measured field in a 3D graphics presentation, and compares it with reference data stored for the actual linac and energy, presenting the difference matrix along with the numerical analysis results. Measured data and analysis results are stored in ASCII files in a directory structure created by the user using the Windows Explorer.

It is possible to browse a directory to investigate the stored data, or to check numerical analysis results as a function of time. Results can also be exported to spreadsheet programs for further investigation. MultiCheck allows the definition of tolerance matrices and thresholds, facilitating the assessment of the actual results.