Educational simulationIGRT / 01

For radiation therapy students and instructors

Radiation therapy image matching practice.

Practice 2D/2D portal image matching, CBCT and MR registration, and 5DOF or 6DOF couch corrections. Submit each match and review the remaining setup error.

Access
Free public beta
Account
Required · no card
Patient data
Not accepted

Educational simulator only. Not a medical device or for clinical use. Setup errors, treatment scenarios, and displayed values are simulated.

Case file 07 Mediastinal lymph nodes CBCT · 6DOF
Three-plane CBCT registration workspace showing planning and daily mediastinal anatomy
Actual trainer interfaceAxial · coronal · sagittal
ObservationThe mediastinal soft tissue and source nodes remain displaced after bony alignment.

The soft-tissue anatomy moves together, and the case is graded against the source-annotated lymph nodes rather than the spine alone.

  1. VRT01
  2. LNG02
  3. LAT03
  4. PCH04
  5. ROL05
  6. RTN06
Current practice libraryPublic beta
132D/2D cases
16CBCT + MR cases
6Full Treatment workflows
17Machine Room setups
01

IGRT image matching learning objectives.

The image-guided radiation therapy (IGRT) cases apply a new simulated setup error on each attempt. Students review the images, select the matching anatomy, apply a correction, and check the residual error.

  1. 01 / Projection

    Compare both planar views.

    Review the AP and lateral images together. A correction must account for anatomy shown in both projections.

  2. 02 / Volume

    Review all three volumetric planes.

    Use axial, coronal, and sagittal views to assess one three-dimensional registration.

  3. 03 / Anatomy

    Use the anatomy specified by the case.

    Cases grade bony, soft-tissue, target, fiducial, or postoperative anatomy according to the stated task.

  4. 04 / Correction

    Interpret the couch correction.

    Review vertical, longitudinal, lateral, pitch, roll, and rotation values, then compare the residual with the case tolerance.

02

IGRT image registration practice modes.

The trainer includes standalone registration, connected treatment workflows, and a 3D equipment sandbox.

Mode 01PLANAR
AP and lateral cranial images in the 2D/2D matching workspace
Actual trainer interface · AP + patient-left lateral

Planar registration

2D/2D portal image matching.

Most planar cases compare AP and patient-left lateral setup images with planning digitally reconstructed radiographs (DRRs). Fiducial and field-based cases use the reference images stated in the case.

  • AP and lateral viewsBoth views show the same simulated setup error.
  • 5DOF controlsAdjust the available translations and rotations.
  • Residual reportView each graded axis and its tolerance after submission.
Open a 2D/2D case
Mode 02VOLUMETRIC
Axial, coronal, and sagittal views in the CBCT matching workspace
Actual trainer interface · axial + coronal + sagittal

Volumetric registration

CBCT and MR image registration.

Review cone-beam CT (CBCT) or MR images in axial, coronal, and sagittal planes. Each case specifies bony anatomy, a target, fiducials, soft tissue, or a source annotation as the grading reference.

  • Three-plane reviewAxial, coronal, and sagittal views update from the same volume.
  • Up to 6DOFCases can include translations, pitch, roll, and rotation.
  • Case-specific gradingThe target anatomy and tolerance are stated for each case.
Open a CBCT or MR case
Full Treatment prostate workflow with CBCT, couch correction, and treatment controls
Applied workflow

Full Treatment workflow simulation.

Full Treatment cases connect image acquisition and registration with couch correction, machine preparation, verification steps, and simulated delivery.

Open a Full Treatment case
Three-dimensional training linac, couch, and imaging systems in the Machine Room
Spatial context

3D Machine Room geometry.

The sandbox includes a 3D training linear accelerator, movable gantry, couch, kV arms, and MV imager around scanned anatomy. It displays equipment position, beam angle, and clearance in one scene.

Open the Machine Room
03

Suggested radiation therapy learning sequence.

The sequence moves from guided control use to independent registration, case-specific matching, connected workflows, and equipment geometry.

LevelFocusStudent task
01

Foundations

A guided 2D/2D or CBCT tutorial introduces the controls, image orientations, and couch axes.

02

Registration

Independent planar and volumetric cases apply a new simulated offset on each attempt.

03

Case-specific matching

Cases use bony, soft-tissue, target, fiducial, postoperative, and off-bone matching tasks.

04

Connected workflow

Full Treatment cases include registration, verification, machine setup, and simulated delivery.

05

Equipment geometry

The Machine Room relates gantry angle and couch position to imaging equipment, anatomy, and clearance.

A / Student

For radiation therapy students.

Guided tutorials introduce the controls and couch axes. Independent cases apply new simulated errors and report residuals after submission.

  • New simulated setup error on each attempt
  • Remaining error reported by graded axis
  • Case-specific tolerances and review notes
  • Display-only drawing and measurement tools
  • Teaching Auto Match in standalone untimed Practice mode
  • Private progress, personal bests, and timed challenges
Open the trainer
B / Instructor

For radiation therapy instructors.

Cases can be used for classroom demonstrations of anatomy selection, matching methods, couch corrections, and residual error review.

  • 2D/2D, CBCT/MR, and Full Treatment demonstrations
  • Bony, target, soft-tissue, and fiducial matching examples
  • Case tolerances and residual error review
  • Seven open learning guides
Open the learning guides
04

Radiation therapy image matching case library.

The library covers cranial, thoracic, abdominal, pelvic, and extremity anatomy across several matching methods.

Sagittal thoracic spine CT with target and organ-at-risk contours
Spine SBRTThoracic spine with target and organ-at-risk contours.CBCT · contours · bone window
Coronal lung CT with a right lower lobe target contour
Lung SBRTTarget-focused lung registration with off-bone motion.Target-focused · off-bone
Axial contrast MR at the internal auditory canal with a teaching target
Acoustic neuromaPaired MR registration with target and cochlea contours.MR · cranial · 6DOF
2D / 2D13 cases

Planar cases cover brain, thorax, spine, pelvis, breast, prostate, femur, knee, shoulder, postoperative hip, and pediatric abdomen.

CBCT / MR16 cases

Volumetric cases cover cranial, thoracic, abdominal, pelvic, breast, prostate, sarcoma, adrenal, renal, and esophageal anatomy.

Full Treatment6 public workflows

Prostate, lung, acoustic neuroma, liver, instrumented spine, and craniospinal irradiation.

05

Image-guided radiation therapy learning guides.

Seven guides cover image-guided radiation therapy (IGRT), 2D/2D portal image matching, CBCT 6DOF registration, couch shifts, prostate fiducials, kV and MV imaging, and DIBH.

06

Radiation therapy image matching FAQ.

The trainer is educational software. It does not accept patient uploads and must not be used for clinical decisions.

Is the trainer free?

Yes. The trainer is free during the public beta. A free account is required, and no card is needed.

Is it for clinical use?

No. This is an educational simulator, not a medical device, and it must not be used to plan, verify, or deliver clinical treatment. Setup errors, scenarios, and displayed values are simulated, and the trainer does not accept patient uploads.

Do I need an account?

Yes. A free account is required to open the trainer, access all public beta cases, and save your progress.

Who is it designed for?

It is designed for radiation therapy students, educators, training programs, and clinical staff. It can be used for IGRT registration practice and classroom demonstration without access to a treatment machine.

What types of matching can I practice?

You can practice 2D/2D registration and CBCT or MR three-plane matching, with 5DOF and 6DOF couch corrections. Cases include bony, soft-tissue, fiducial, and target-focused matching, plus connected Full Treatment workflows.

Open the RT Image Matching Trainer.

A free account is required. No card. No patient uploads.

Open the trainer