Decrease (-) Restore Default Increase (+) font size
Good Samaritan Hospital Home  
Heart
Cancer
Joint Replacement
Family Birth & NICU
Trauma
Print This Page Print |    Email to a Friend Email
Who We Are Where We Are Contact Us Careers Site Map


Radiation Therapy Equipment

 

•-          Varian Trilogy Linear Accelerator with on-board imaging (OBI)

•-          optical guidance system, respiratory gating

•-          stereotactic radiosurgery/radiotherapy (SRS/SRT)

•-          electronic portal imaging

•-          120 Multi-leaf Collimator (MLC)

Medical Linear Accelerator:  Used to deliver radiotherapy treatments, the accelerator consists of four major components:

  1. Electronics cabinet called a stand, which houses a microwave energy generating source
  2.  A rotating gantry containing the accelerator structure that rotates around the patient
  3. An adjustable treatment couch
  4. Operating electronics.

This accelerator is approximately nine feet tall and 15 feet long.  Accelerators are located within specially constructed concrete treatment rooms to provide x-ray shielding.

On-board Imaging:  Consists of a kV x-ray source and silicon detector that enables high quality images to be taken of the patient in their treatment position to verify and replicate daily setups.

Optical Guidance System:  System that continuously monitors fiducial markers during treatment to detect motion that may occur while the treatment is being delivered.

Respiratory Gating:  Enables the linear accelerator system to account for breathing motions during treatment and pulses the treatment to only deliver dose during certain phases of the breathing cycle.

Stereotactic Radiosurgery/Radiotherapy:  The delivery of very high doses of radiation in less than five treatments to very highly precise locations of the body.

Electronic Portal Imaging: Imaging hardware and software that allows for imaging of treatment portals to verify treatment positions and is used to determine that the desired prescription is being delivered to the designated area of the body.

MLC: The 120 multi-leaf collimator located in the gantry head of the treatment machine allows for beam shaping and IMRT treatment delivery. This computer controlled mechanical device consists of 120 individually adjustable metal fingers or leaves. These leaves move independently of each other to block out certain areas to achieve the desired shaping of the radiation beam to conform to the 3-D volume of the tumor.

Varian 21EX Linear Accelerator with electronic portal imaging and 120 Multi-leaf Collimator (MLC)

A medical linear accelerator used to deliver radiotherapy treatments, the accelerator consists of four major components:

  1. Electronics cabinet called a "stand" housing a microwave energy generating source
  2. A rotating gantry containing the accelerator structure that rotates around the patient
  3. An adjustable treatment couch
  4. Operating electronics

This accelerator is approximately nine feet tall and 15 feet long.  Accelerators are located within specially constructed concrete treatment rooms to provide x-ray shielding.

Electronic Portal Imaging: Allows imaging of treatment portals to detect the positions where treatment can take place and used to determine the desired prescription is being delivered to the designated area of your body.

MLC: The 120 multi-leaf collimator located in the gantry head of the treatment machine allows for beam shaping and IMRT treatment delivery. This computer controlled mechanical device consists of 120 individually adjustable metal fingers or leaves. These leaves move independently of each other to block out certain areas to achieve the desired shaping of the radiation beam to conform to the 3-D volume of the tumor.

ARIA Record and Verify System

These systems manage patient information including the patient's complete cancer care regimen from scheduling through treatment through billing.

GE Lightspeed QX/I CT Simulator

Used for simulation and planning of the radiation treatment area. CT scanner takes cross-sectional images of the patient's tumor area in their treatment position.        

Varian FastPlan Stereotactic Radiosurgery/Radiotherapy (SRS/SRT) Planning System:

Highly sophisticated computer system designated for stereotactic radiosurgery/radiotherapy planning. Advanced graphics import both CT scans and MRI scans of the patient and organizes them into a 3-D model. The system plans the radiation dose delivery to the tumor and sculpts the radiation beam to avoid surrounding healthy tissue.

Varian Eclipse Treatment Planning System with Intensity Modulated Radiotherapy Planning (IMRT)

High-powered, sophisticated computer system with advanced graphics that imports the CT scans of the patient and organizes them into a 3-D model of the patient and their treatment area. The system plans the radiation dose delivered to the tumor and sculpts the radiation beam to avoid surrounding healthy tissue. Using mathematical equations, the computer then devises a plan for treatment based on data entered about tumor size, shape and location. Computer software calculates the treatment plan, including beam shapes and exposure times needed to deliver the prescribed dose of radiation to the tumor. This treatment plan is then sent to the linear accelerator for treatment.

IMRT: Intensity Modulated Radiotherapy is one of the most exciting developments in radiation therapy treatment. IMRT uses computer-generated images to plan and then deliver even more tightly focused radiation beams to cancerous tumors than is possible with conventional radiotherapy. With this capability, clinicians can exquisitely paint or sculpt a precise radiation dose to the shape and depth of the tumor, while significantly reducing the adverse effects of doses on healthy tissue.

Radiological Imaging Technology (RIT) Dosimetry QA System

Quality Assurance program and tool used by the physics staff to measure and check the doses delivered to patients during their treatment. This software performs a second check of the plan developed by the Eclipse treatment planning system to verify the accuracy of the overall calculations.

Varian Gamma-Med Plus 24 channel High Dose Rate (HDR) Brachytherapy System

Twenty-four channel high dose rate brachytherapy machine used to deliver internal radiation treatments. This unit contains a high dose rate Ir-192 radioactive source that can be attached to an internal applicator. This allows for the radioactive source to move inside the body area of the patient to deliver an internal radiation dose.

 


Radiation Oncology Team
Radiation Oncology Process
Radiation Therapy Treatment
Radiation Therapy Equipment
Radiation Therapy Techniques
Brachytherapy Treatment
Radiation Therapy Links

About Our Cancer Center
Contact Us
Medical Oncology
Radiation Therapy
Complementary Therapies
Clinical Trials
Patient Support, Education &
Survivorship 
Breast Care/Breast Heatlh
Navigator
Pain Management
Family Risk Assessment Program & Cancer Genetic Counseling
Financial Resources
Prevention & Early Detection
Professional Education
NCCCP
Cancer Registry
Make a Contribution
News and Activities  


Links to Related Web Sites