Color and Grayscale Viewing. DICOM Calibration. The Dome GX4MP is a 30-inch widescreen display offering multi-modality viewing in both color and grayscale. The GX4MP is ideal for reading PET-CT, MRI, Nuclear Medicine, Ultrasound and Pathology, as well as CR and DR. Widescreen 4MP color display CXtra™-controlled DICOM for life Flexible, lightweight, low-power design Quality image viewing without reflective glass