Figure 1: Variable FOV sampling patterns and resulting PSFs: (top) 2D PR elliptical FOV, (middle) PROPELLER oval FOV, (bottom) 3D PR cylinder with an elliptical base. Introduction: Radial-based imaging trajectories, such as projection-reconstruction, cones, and PROPELLER, have many applications [1-4] because of their increased robustness to motion and flow over Cartesian trajectories, and suppo...

In this paper, we propose a tele-operation system with a super wide field of view (FOV). Our teleoperation system has an omnidirectional image sensor for capturing a panoramic image and a personal spherical screen display for projecting a wide-angle image. The first original contribution is applying our system to navigating the mobile robot by tele-operation and evaluating efficiency of wide FO...

Optical coherence tomography (OCT) allows imaging dynamic structures and fluid flow within scattering tissue, such as the beating heart and blood flow in murine embryos. For any given system, the frame rate, spatial resolution, field-of-view (FOV), and signal-to-noise ratio (SNR) are interconnected: favoring one aspect limits at least one of the others due to optical, instrumentation, and softw...

To compare the different retinal blood flow velocities (BFVs) acquired with different fields of view (FOVs) using the retinal function imager (RFI), twenty eyes of twenty healthy subjects were enrolled in the study. Retinal microvessel BFV in the macula was acquired with both a wide FOV (35 degrees, 7.3 × 7.3 mm2) and a commonly used small FOV (20 degrees, 4.3 × 4.3 mm2). The 35-degree FOV was ...

PROPELLER MRI (periodically rotated overlapping parallel lines with enhanced reconstruction) provides images with significantly fewer B(0)-related artifacts than echo-planar imaging (EPI), as well as reduced sensitivity to motion compared to conventional multiple-shot fast spin-echo (FSE). However, the minimum imaging time in PROPELLER is markedly longer than in EPI and 50% longer than in conve...

Proton (1H) magnetic resonance imaging (MRI), is now an established clinical diagnostic tool, and 25 years of steady progress have reduced MRI scan-times of an hour or more to sub-seconds: MRI fluoroscopy is feasible! Arguably, advances in MRI detector coil design are major factors in the tremendous gains in sensitivity that have made this possible. MRI detectors comprised of small surface coil...

UNLABELLED Pediatric (18)F-FDG dosing and acquisition durations are generally based on coarse extrapolation from adult guidelines. This study sought to determine whether shorter acquisition durations or a lower (18)F-FDG injected activity could be used for pediatric (18)F-FDG PET/CT examinations while maintaining diagnostic utility. Reduction of overall scan time potentially reduces motion arti...

This paper presents new algorithms for Field of Vision (FOV) computation which improve on existing work at high resolutions. FOV refers to the set locations that are visible from a specific position in scene computer game. We review computation, describe their limitations, and present aim address these limitations. first an algorithm makes use spatial data structures way is calculation. then no...

Field-of-view (FOV) restrictions are known to affect human behaviour and to degrade performance for a range of different tasks. However, the relationship between human locomotion performance in complex environments and FOV size is currently not fully known. This paper examined the effects of FOV restrictions on the performance of participants manoeuvring through an obstacle course with horizont...