This review draws some parallels between the results of experiments, none very recent, of rewarding and aversive brain stimulation in brain stem sectioned cats and the blunting of negative emotions which occurs in the human locked-in syndrome. Within the framework of theories of embodied emotions, it is suggested that a participation of bodily inputs to cerebral mechanisms of emotion is require...

The Food and Drug Administration (FDA) is conducting research on developing reference lung cancer lesions, called phantoms, to test computed tomography (CT) scanners and their software. FDA loaned two semi-spherical phantoms to the National Institute of Standards and Technology (NIST), called Green and Pink, and asked to have the phantoms' volumes estimated. This report describes in detail both...

I t is proved that a natural general izat ion of chess to an n x n board is complete in exponential time. This implies that there ex is t chess-positions on an n x n chess-board for which the problem of determining who can win from that posi t ion requires an amount of time which is at least exponential in n .

Figure 1 Side view of shunt splint Asplin t was designed for adult renal patients who required protection of their forearm shunt while sleeping. It is posi tioned over the shunt with I inch (2.5 em) clearance, which prevents the weight of the body from resting on the forearm and disrupting circulation. Although sImilar to a splint designed for children who require maximum protection of the shun...

Radiotherapy is one of the main approaches to cure prostate cancer, and its success depends on the accuracy of dose planning. A complicating factor is the presence of a metallic prosthesis in the femur and pelvis, which is becoming more common in elderly populations. The goal of this work was to perform dose measurements to check the accuracy of radiotherapy treatment planning under these compl...

Purpose: An accurate and practical method to measure parameters like strain in myocardial tissue is of great clinical value, since it has been shown that strain is a more sensitive and earlier marker for contractile dysfunction than ejection fraction (EF). Current CMR technologies for strain assessment are time consuming and difficult to implement in daily clinical practice. Feature tracking is...

The purpose of this study was to assess the accuracy and efficacy of an automated treatment plan verification, or "secondary check", tool (Mobius3D), which uses a reference dataset to perform an independent three-dimensional dose verification of the treatment planning system (TPS) dose calculation and assesses plan quality by comparing dose-volume histograms to reference benchmarks. The accurac...

BACKGROUND AND PURPOSE New treatment techniques in radiotherapy employ increasing dose calculation complexity in treatment planning. For an adequate check of the results coming from a modern treatment planning system, clinical tools with almost the same degree of generality and accuracy as the planning system itself are needed. To fulfil this need we propose a photon pencil kernel parameterizat...

introduction: poor sensitivity and poor signal to noise ratio because of low injected thallium dose and presence of scattered photons are the main problems in using thallium in scintigraphic imaging of the heart. scattered photons are the main cause of degrading the contrast and resolution in spect imaging that result in error in quantification. thallium decay is very complicated and photons ar...