Image Guided Radiation Therapy
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Image Guided Radiation Therapy

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Advanced radiation therapy technique

Advanced radiation therapy technique

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Image Guided Radiation Therapy Image Guided Radiation Therapy Presentation Transcript

  • Image-Guided Radiation Therapy MUHAMMED ANEES.K MSc RADIATION PHYSICS UNIVERSITYOF CALICUT 1
  • The process of frequent imaging (2D / 3D), before and during course of radiation treatment merit static & mobile targets 2
  • or I G - I M R T or I G R T 3
  • 4 Elekta's Synergy
  • 5 Varian's Trilogy
  • TREATMENT with IGRT      6
  • On-Board Imagers 7
  • ON-BOARD IMAGERS 8
  • 9
  • 10
  • 1- Portal & Radiographic Imagers (a) (b) 256 × 256 solid state detectors Two Imaging system 11
  • Electronic Portal Imaging Device (EPID)     12
  • On-board imaging EPID Cone beam CT 256 × 256 solid state detectors 13
  • See the difference OBI Gives 2-D Images 14
  • 15
  • 2- In-Room CT-Scanner 16
  • High-Resolution 3-D Patient Anatomy Help toTarget Localization Dose Distribution 17
  • 18
  • 3 Cone Beam ComputedTomography 19
  • Cone Beam Formation Cone Beam 20
  • Kilo voltage Cone-Beam CT 21
  • Mega voltage Cone-Beam CT 22
  • Advantages of Mv-CBCT over Kv-CBCT 23
  • Advantages of kV-CBCT over MV-CBCT 24
  • 25
  • 4- Helical Tomotherapy 26
  • MV-CT image Acquisition IMRT Treatment 27
  • HelicalTomotherapy 28 continue…,
  • Linac Ring Gantry Couch Multi Leaf Collimator Imaging Detector Beam Stop 29
  • 30
  • 5- ULTRASOUND  31
  • Ultrasound Systems 32
  • US 2-D or 3-D ultrasound imaging system integrated with Medical Linac BAT system 33
  • What Can we do With the Images ? or 34
  • WHY IGRT ? 35
  • WHY IGRT ? 36
  • Management of Respiratory Motion 4D- ComputedTomography Real-TimeTumorTracking 37
  • 1, 4-D Computed Tomography 38
  • 39
  • 40 4-D CT Continue…,
  • 41
  • 4-D CT Data Acquisition Prospective Gating Retrospective Gating 42
  • 43 images are collected only at one phase of the respiratory cycle Or Registration of the CT images After Data of Respiratory Phases the have been acquired 1, Prospective Gating scan data are acquired at all phases of respiration and the correlation
  • 2. Retrospective Gating 44 the beam on only at the selected times of respiration Including both Inspiration and Expiration
  • 45
  • 2, Real-TimeTumorTracking 46
  • Real-TimeTumor Tracking 47 Electromagnetic FieldTracking
  • Fluoroscopy-BasedTracking Systems These systems are discussed below as examples……., 48
  • Fluoroscopy-BasedTracking Systems 49
  • 1- Room-Mounted Systems 50
  • Room-Mounted Systems 51 continue…,
  • 2-Linac Gantry-Mounted Systems 52
  • 53
  • 3-Robotic Systems 54
  • 55
  • Conformal dose Distribution for Irregularly tumors 56
  • Electromagnetic FieldTracking 57
  • 58
  • MRI–Guided RadiationTherapy 59
  • MRI–Guided Radiation Therapy 60
  • MRI–Guided RadiationTherapy 61
  • REFERENCE  Treatment Planning in Radiation Oncology by F M Khan  Physics of RadiationTherapy (4th Edition ) by F M Khan  Overview of Image-Guided RadiationTherapy by Lei xing, Ph.D,BrianThorndyke, Ph.D ,University of Stanford  IMRT, IGRT, SBRT – Advances in theTreatment Planning and Delivery of Radiotherapy by John L. Meyer 62
  • 63