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Linear accelerator in medicine

Linear accelerator in medicine

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Linear accelerator in medicine

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  1. Linear accelerator in medicine • XR Tubes • Particles Accelerators • Betatron • Cyclotron • Synchrocyclotron • Synchrotron • Linear accelerator

  2. Medical Linear accelerator • Photon Beam (X-Ray): • 4 MV To 22 MV. • Single Beam. • Duel Beams • Electron Beam: • Multi-Beams with energy grope between: 4- 22 MeV.

  3. Linac : Linear accelerator • The linear accelerator is a device that uses high-frequency electromagnetic waves to accelerate charged particles such as electrons to high energies through a linear tube. • There are several types of linear accelerator designs, but the ones used in radiotherapy accelerate electrons either by traveling or stationary electromagnetic waves of frequency in microwave region (≈ 3000 megacycles/sec).

  4. The difference between traveling wave and stationary wave accelerators is the design of the accelerator structure Functionally the traveling wave structures require a terminating, or "dummy", load in order to absorb the residual power at the end of the structure, the standing wave structures provide maximum reflection of the waves at both ends of the structure thus preventing a backward reflected wave the combination of forward and reverse traveling waves will give rise to stationary waves.

  5. Electron Gun Accelerator Tube Treatment Head (Straight Beam) Wave Guide system Magnetron Or Klystron Modulator Bending Magnet Treatment Head (Bent Beam) Power Supply Medical Linear accelerator A block diagram of typical medical Linear Accelerator

  6. The major components of medical Linear Accelerator • Power Supply • Modulator • Magnetron Or Klystron • Electron Gun • Wave Guide system • Accelerator Tube • Bending Magnet • Treatment Head (Straight Beam) • Treatment Head (Bent Beam)

  7. Modulator Electron Gun Flatining Filter Cros Section of Accelerator tube

  8. Provides DC power to the modulator A power supply Modulator Deliver the pulses to the electron gun the magnetron or klystron electrons Pulsed microwaves the accelerator tube or structure via a waveguide systems.

  9. تصميم المسرعات الخطية الطبية

  10. أنبوب التسريع موازٍ لمحور الحزمة

  11. أنبوب التسريع متعامد مع محور الحزمة

  12. أنبوب التسريع خارج غرفة المعالجة

  13. Linear accelerator 4 Groups • The accelerator • The table • The collimator multilames • Portale Imaging

  14. Electron Gun

  15. مجموعة الإنحراف الكهرطيسية الأجزاء الرئيسية المسرع الخطي حزمة الإلكترونات المسرّع مدفع الإلكترونات الـهدف حجيرات التأين الحزمة الإشعاعية المحددات

  16. آلية اصدار الفوتونات المسرع الهدف حزمة الإلكترونات مرشح تسوية الحزمة حجيرة التأين حامل الحمايات محددات الحزمة حزمة الفوتونات

  17. آلية اصدار الإلكترونات المسرع وشائع التبعثر حزمة الإلكترونات حجيرة التأين محددات الحزمة محددات إضافية حزمة الإلكترونات

  18. Varian Elekta Siemens