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Portal Imaging - Efficient online review

Efficient on line review – makes review before treatment achievable.

PortalVision™ offers far more than simply film replacement. With PortalVision, clinicians can image and evaluate during the treatment course, speeding delivery and accuracy.

Efficient online review - Makes review before treatment achievable.

PortalVision aS1000 – truly state of the art.

PortalVision is the megavoltage imaging system from Varian®, used on the Trilogy™ system and optional on any standard Clinac® linear accelerator. Amorphous silicon technology is used to ensure the highest possible image quality. PortalVision fully integrates with the Clinac linear accelerator to bridge the treatment planning, record and verify, and QA processes.

Key Features:
  • Low dose, high quality megavoltage imaging
  • Automated acquisition, pretreatment or throughout beam delivery
  • Preprogrammed imaging template library
  • Ongoing verification throughout the treatment course
  • Gated port film acquisition to pinpoint tumor position
  • Online and offline review to facilitate clinical processes
  • Automated Exact® arm positioning

A high-quality verification image can be acquired with as little as 1MU.

By blending high resolution with a very small file size, PortalVision aS1000 delivers truly unmatched low dose, high-quality images. With exceptional resolution, image comparison is easier, quicker, and more accurate than comparable systems.

PortalVision keeps your eyes on success

PortalVision helps ensure treatment plan verification, accurate patient setup, effective treatment delivery, and more successful patient outcomes with feature-rich functions that:

  • Allow clinicians to verify the accuracy of the treatment plan before any prescribed dose is delivered to the patient.
  • Facilitates accurate pretreatment patient positioning prior to the first treatment session.
  • Provides ongoing verification of the accuracy of position during subsequent treatments, not merely before the prescribed radiation is turned on or after it is turned off.

PortalVision's ability to image during treatment allows clinicians to verify accurate positioning without increased doses to the patient. The images become an important part of the documentation of accurate delivery of the prescription in the patient's record.

Gated port film acquisition

This technique is identical to acquiring pretreatment port films or verification port films taken during the treatment. However, PortalVision works in conjunction with the Real-Time Position Management (RPM™) respiratory gating system to automatically acquire megavoltage radiographs during the correct phase of the respiratory cycle. The gated megavolt radiographs are then compared to the gated digitally reconstructed radiographs from a 4D CT scan.

Efficient online review

With an efficient online review capability with the 4D integrated treatment console, clinicians can easily review patient positioning before treatment. The reference images for all fields are automatically loaded with the plan and can be compared quantitatively with the newly acquired portal images. Automated comparison tools make this a quick process and the resultant quantitative data is quickly available to the operator.

Comprehensive offline review

PortalVision is a fully integrated part of the ARIA™ Oncology Information System so images are instantly availably for review at any location within the department. A comprehensive set of tools makes registration of portal images with reference images automatic and patient notes can be used to communicate any changes on the treatment machine to the therapists.

Ease of use and automation - true integration

Preprogrammed portal imaging templates form part of the patient's prescription so portal images are automatically requested during the treatment cycle. With the ARIA Oncology Information System, images acquired using PortalVision are available throughout the department to review whenever and wherever necessary.

Automated Exact positioning

Automated Exact positioning

Positioned by the industry leading, motorized robotic, three-axis Exact® arm, PortalVision aS1000 offers complete flexibility in imager placement.

Clinical Benefits:
  • Positioning the imager without having to enter the treatment room allows for faster, smoother procedures.
  • The broad range of motions helps clinicians image the largest possible treatment fields and avoid the limitations of fixed-elevation imaging detectors.
  • The PortalVision detector can be easily programmed to position itself at patient-specific locations according to unique treatment needs.

 

Contact Varian Oncology

Varian Oncology Headquarters
Tel: 1.650.424.5700
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