We compared maximum displacement thresholds (Dmax) with minimum displacement thresholds (Dmin) in patients with retinitis pigmentosa (RP) in order to characterize the nature of their visual disability, as well as to assess possible models of foveal vision loss. Thresholds for discriminating the direction of the spatial displacement of random dot patterns were measured in a group of 20 patients ...

We present a Bayesian multimodality non-rigid image registration method. Since the likelihood is unknown in the general multimodality setting, we use a density estimator as a drop in replacement to the true likelihood. The prior is a standard small deformation penalty on the displacement field. Since mutual information-based methods are in widespread use for multimodality registration, we attem...

Consider a standing wave in a stretched string. As we proceed horizontally along the string, the vertical displacement (or amplitude) of the wave increases in one direction, passes through a maximum, decreases to zero and then increases in the opposite direction. The places where the amplitude is zero are called nodes. The nodes lie on a plane called the nodal plane (which lies perpendicular to...

OBJECTIVES The objective of this study was to compare temporomandibular joint (TMJ) findings from clinical examination and magnetic resonance imaging (MRI) for diagnosing anterior disc displacement. MATERIAL AND METHODS 114 subjects with at least one sign of temporomandibular disorders (tenderness/pain on palpation of the joints or muscles, TMJ sounds, pain or deviation during maximum mouth o...

We discuss the stabilization properties of networks that are composed of “displacement elements”. Each displacement element is defined by an integer K, called the displacement of the element, an input variable x, and an output variable y, where the values of x and y are non-negative integers. An execution step of this element assigns to y the maximum of 0 and K + x. The objective of our discuss...

BACKGROUND To study the rarity of mandibular coronoid process fractures and treatment strategies based on the displacement of these fractures. MATERIALS AND METHODS A retrospective study of 11 cases of coronoid process fractures among 307 treated cases from 2008 to 2013 was conducted. Six patients were treated conservatively and 5 underwent ORIF with associated fractures. A statistical analys...