Max Field-of-View (MaxFOV)

Access to data up to the edge of the patient bore to reduce positioning concerns and allow for precise treatment.

A full view, edge-to-edge, with specified accuracy to help increase your confidence

The unique needs of radiation oncology make it important to have image data across the entire bore of the CT simulator. Patients are often positioned off-center to accommodate positioning accessories and dose calculations require data from the entire physical anatomy. Until now, the architecture of the CT tube and detector had limited simulation technology, creating a compromise between efficiency and precision.

MaxFOV uses GE Healthcare’s proprietary algorithms to leverage collected data that traditional algorithms ignore to essentially build a complete view of everything within the CT’s bore, edge-to-edge, so you won’t miss anything.1


MaxFOV offers the following benefits:

Enhanced dose planning.
MaxFOV provides edge-to-edge image acquisition with virtually no blind spots. Accuracy in the skin line and density detection to help facilitate accurate planning for any size patient.

Flexible patient positioning.
MaxFOV allows essentially complete imaging across the entire bore, allowing the patient to be adjusted off-center without jeopardizing image quality.

Use of various positioning accessories.
MaxFOV delivers precise imaging even when using flat table tops and immobilization devices.



The scan field-of-view is always smaller than the gantry bore, due to the architecture of the CT tube and detector. The smaller field-of-view may limit the information needed for accurate simulation and planning.

Traditional reconstruction algorithms only use the attenuation data that is completely common to each detector view which is also known as the scan FOV. The data that is in the common surface to each view is only a fraction of the data collected. The rest of the data can be leveraged to image the entire bore with an advanced iterative algorithm.

MaxFOV technology is designed to leverage all the acquired data to enable viewable imaging to the edge of the bore. MaxFOV detects both the patient and non-patient information in sinogram space. The non-patient objects are managed in the sinogram space to minimize interference artifacts in the MaxFOV imaging space.


1 MaxFOV is meant to be used for RT planning purposes to expand the display field-of-view up to the diameter of the CT bore. MaxFOV performance is less than the diagnostic scan field-of-view. See product data sheet for specifications.