A system for displaying an image of a patient's internal anatomy and of a radio-dense effecter (10, 40, 40', 40") in a surgical field during a medical procedure, comprising: a device for acquiring images of the surgical field, wherein a localizing shot image or a baseline image as an initial image of the anatomy to be addressed surgically is acquired and, with the anatomy identified and displayed on a computer screen as a display, a new image with the radio-dense effecter (10, 40, 40', 40") is acquired; a tracking device for tracking the position of the radio-dense effecter (10, 40, 40', 40") within the surgical field; an image processor for receiving image data from the device for acquiring images and position data from the tracking device, the image processor including a memory and a computer processor for processing data to generate image data representing the initial image of the anatomy to be addressed surgically and the new image with the radio-dense effecter (10, 40, 40', 40"), the processor being operable to execute software to overlay the new image with the radio-dense effecter (10, 40, 40', 40") on the initial image of the anatomy to be addressed surgically with the new image with the radio-dense effecter (10, 40, 40', 40") positioned relative to the initial image of the patient's anatomy in the same manner as the actual radio-dense effecter (10, 40, 40', 40") is positioned relative to the actual anatomy, the software further being operable to move the new image with the radio-dense effecter (10, 40, 40', 40"), based on the position data received from the tracking device, relative to the initial image, while remaining overlaid on the initial image, as the radio-dense effecter (10, 40, 40', 40") is moved relative to the actual anatomy; and a display (122/123) adapted to display the overlaid images (12 and 14) as a combined image consisting of the initial image being stationary and the new image with the radio-dense effecter (10, 40, 40', 40"), which new image, as the radio-dense effecter (10, 40, 40', 40") is moved within the field of the initial image, moves accordingly. a device for acquiring images of the surgical field, wherein a localizing shot image or a baseline image as an initial image of the anatomy to be addressed surgically is acquired and, with the anatomy identified and displayed on a computer screen as a display, a new image with the radio-dense effecter (10, 40, 40', 40") is acquired; a tracking device for tracking the position of the radio-dense effecter (10, 40, 40', 40") within the surgical field; an image processor for receiving image data from the device for acquiring images and position data from the tracking device, the image processor including a memory and a computer processor for processing data to generate image data representing the initial image of the anatomy to be addressed surgically and the new image with the radio-dense effecter (10, 40, 40', 40"), the processor being operable to execute software to overlay the new image with the radio-dense effecter (10, 40, 40', 40") on the initial image of the anatomy to be addressed surgically with the new image with the radio-dense effecter (10, 40, 40', 40") positioned relative to the initial image of the patient's anatomy in the same manner as the actual radio-dense effecter (10, 40, 40', 40") is positioned relative to the actual anatomy, the software further being operable to move the new image with the radio-dense effecter (10, 40, 40', 40"), based on the position data received from the tracking device, relative to the initial image, while remaining overlaid on the initial image, as the radio-dense effecter (10, 40, 40', 40") is moved relative to the actual anatomy; and a display (122/123) adapted to display the overlaid images (12 and 14) as a combined image consisting of the initial image being stationary and the new image with the radio-dense effecter (10, 40, 40', 40"), which new image, as the radio-dense effecter (10, 40, 40', 40") is moved within the field of the initial image, moves accordingly.