12 research outputs found
Telerobotic Pointing Gestures Shape Human Spatial Cognition
This paper aimed to explore whether human beings can understand gestures
produced by telepresence robots. If it were the case, they can derive meaning
conveyed in telerobotic gestures when processing spatial information. We
conducted two experiments over Skype in the present study. Participants were
presented with a robotic interface that had arms, which were teleoperated by an
experimenter. The robot could point to virtual locations that represented
certain entities. In Experiment 1, the experimenter described spatial locations
of fictitious objects sequentially in two conditions: speech condition (SO,
verbal descriptions clearly indicated the spatial layout) and speech and
gesture condition (SR, verbal descriptions were ambiguous but accompanied by
robotic pointing gestures). Participants were then asked to recall the objects'
spatial locations. We found that the number of spatial locations recalled in
the SR condition was on par with that in the SO condition, suggesting that
telerobotic pointing gestures compensated ambiguous speech during the process
of spatial information. In Experiment 2, the experimenter described spatial
locations non-sequentially in the SR and SO conditions. Surprisingly, the
number of spatial locations recalled in the SR condition was even higher than
that in the SO condition, suggesting that telerobotic pointing gestures were
more powerful than speech in conveying spatial information when information was
presented in an unpredictable order. The findings provide evidence that human
beings are able to comprehend telerobotic gestures, and importantly, integrate
these gestures with co-occurring speech. This work promotes engaging remote
collaboration among humans through a robot intermediary.Comment: 27 pages, 7 figure
3D Hybrid Imaging for Structural and Congenital Heart Interventions in the Cath Lab
Hybrid imaging (HI) during cardiovascular interventions enables the peri-procedural visualization of the organs and tissues by means of integrating different imaging modalities. HI can improve the procedural efficacy and safety. This review provides an overview of different systems, their possibilities and the current clinical use and benefits focused on structural and congenital heart diseases. We have performed a literature search and linked the software options to the clinical use in cardiology to gain insight into the clinical use of the systems. In this review, we focus on radiation and contrast exposure, complication rate and procedure time. We found that currently available studies are limited by small cohorts. Nevertheless, HI systems for valvular procedures result in a significant decrease of radiation and contrast exposure. The largest benefit hereof is observed when HI is used in combination with rotational angiography. Furthermore, automatically determined optimal implant angle for transcatheter aortic valve implantation decreases the complication rate significantly. Congenital heart disease interventions that require 2D/3D Transoesophageal echocardiography (TEE) such as septal defects show a significant decrease in radiation and contrast exposure and procedural time when using TEE-Mono- and bi-plane cine angiography and fluoroscopy (XRF) fusion software. MitraClip procedures using these HI systems, however, show only a trend in decrease of these effects. In conclusion, major interventional X-ray vendors offer HI software solutions which are safe and can aid the planning and image guidance of cardiovascular interventions. Even though current HI technologies have limitations, HI provides support in the increasingly complex cardiac interventional procedures to provide better patient care
3D Hybrid Imaging for Structural and Congenital Heart Interventions in the Cath Lab
Hybrid imaging (HI) during cardiovascular interventions enables the peri-procedural visualization of the organs and tissues by means of integrating different imaging modalities. HI can improve the procedural efficacy and safety. This review provides an overview of different systems, their possibilities and the current clinical use and benefits focused on structural and congenital heart diseases. We have performed a literature search and linked the software options to the clinical use in cardiology to gain insight into the clinical use of the systems. In this review, we focus on radiation and contrast exposure, complication rate and procedure time. We found that currently available studies are limited by small cohorts. Nevertheless, HI systems for valvular procedures result in a significant decrease of radiation and contrast exposure. The largest benefit hereof is observed when HI is used in combination with rotational angiography. Furthermore, automatically determined optimal implant angle for transcatheter aortic valve implantation decreases the complication rate significantly. Congenital heart disease interventions that require 2D/3D Transoesophageal echocardiography (TEE) such as septal defects show a significant decrease in radiation and contrast exposure and procedural time when using TEE-Mono- and bi-plane cine angiography and fluoroscopy (XRF) fusion software. MitraClip procedures using these HI systems, however, show only a trend in decrease of these effects. In conclusion, major interventional X-ray vendors offer HI software solutions which are safe and can aid the planning and image guidance of cardiovascular interventions. Even though current HI technologies have limitations, HI provides support in the increasingly complex cardiac interventional procedures to provide better patient care