Two-dimensional ultrasound display system

1998 ◽  
Vol 104 (4) ◽  
pp. 1902
Author(s):  
Leonard James Goodsell
Keyword(s):  
Two Dimensional ◽  
Display System

The Effects of Prediction, Quickening, Frequency Separation, and Percent of Pursuit in Perspective Displays for Low-Visibility Landing

1978 ◽  
Vol 22 (1) ◽  
pp. 208-212 ◽  
Author(s):  
Richard S. Jensen
Keyword(s):  
Systematic Study ◽  
High Potential ◽  
Frequency Separation ◽  
Two Dimensional ◽  
Display System ◽  
Aircraft Landing ◽  
Cockpit Displays ◽  
Low Visibility ◽  
Effective Use ◽  
Unique Context

Pictorial realism has long been considered necessary in aircraft landing displays because it makes effective use of man's superior perceptual capabilities. A serious limitation to pictorially realistic two-dimensional displays is that they must be magnified to provide distance cues equivalent to those provided in scenes viewed directly. This paper presents a rationale for applying some well known concepts including prediction, quickening, frequency separation, and percent of pursuit, to the development of forward-looking cockpit displays for low-visibility curved approach and landing tasks that may permit a compromise of the magnification principle. The development of such a display system provides a unique context for the systematic study of the interrelationships among these display concepts with a high potential for scientific and applied payoffs.

Data-base techniques for multiple two-dimensional polyacrylamide gel electrophoresis analyses.

1980 ◽  
Vol 26 (10) ◽  
pp. 1403-1412 ◽  
Author(s):  
L E Lipkin ◽  
P F Lemkin
Keyword(s):  
Data Structure ◽  
Data Base ◽  
Polyacrylamide Gel Electrophoresis ◽  
Local Alignment ◽  
National Bureau ◽  
Two Dimensional ◽  
Display System ◽  
Interactive Display ◽  
Management Procedures ◽  
Computer Controlled

Abstract Two-dimensional protein electrophoresis can benefit from a powerful set of computer-supported image processing and data structure/management procedures. Detection of quantitative differences is complicated by local inhomogeneities in the polyacrylamide base; biochemical changes and variations in temperature and preparative technique also make the between-gel density and x-y coordinate correspondences quite imprecise. The program presented here provides local alignment and computer-controlled variable “flicker” rates for multiple gels, with use of an interactive display system. Manual spot densitometry, referred to a National Bureau of Standards density wedge, can be complemented by a set of automatic densitometry routines for previously established lists of spots. The ability to establish a set of local landmarks, either by included standards or user identification, provides a basis for automatic n-way gel comparison for subsets or for the entire set of spots. Automatic segmentatin algorithms allow isolatin of spots and separation of touching and partially overlapping regions. Various analytical and statistical facilities are part of the user’s access to the interactively developed data base. The data-structure and image-manipulation techniques developed here allow for user-directed and heuristic comparisons with online presentation of intermediate and final results.

Third-generation three-dimensional display system for laparoscopic radical nephrectomy reduced surgical complications compared to a two-dimensional display system

2021 ◽  
pp. 205141582110174
Author(s):  
Yosuke Fujishima ◽  
Ryo Takata ◽  
Takashi Tsuyukubo ◽  
Seiko Kanzaki ◽  
Kazumasa Isurugi ◽  
...  
Keyword(s):  
Radical Nephrectomy ◽  
Perioperative Complications ◽  
Three Dimensional ◽  
Third Generation ◽  
Two Dimensional ◽  
Display System ◽  
Level Of Evidence ◽  
Laparoscopic Radical Nephrectomy ◽  
Laparoscopic Complications ◽  
The Times

Objective: Compared with two-dimensional (2D) laparoscope systems, conventional three-dimensional (3D) systems provide a superior understanding of depth. However, they are operator limited due to difficulties with resolution and illumination. A novel third-generation (3G) 3D system may resolve these problems. We prospectively compared the operative performance and perioperative safety results of 2D and 3G 3D systems in laparoscopic radical nephrectomy (LRN). Patients and methods: A single experienced surgeon performed 3G 3D LRN for 19 patients and 2D LRN for 16 patients. After the insertion of the access ports, the execution times of each step in the surgical procedure in the two groups were measured and compared, along with the perioperative complications. Results: Patients in the 3D group were associated with fewer complications than those in the 2D group. In particular, no peritoneal injury was observed in the 3D group (0% vs. 25%, p=0.04). Logistic regression analysis showed no significant differences between the times of each surgical step and the amount of bleeding. Conclusions: The 3G 3D laparoscope system provided a detailed anatomical view for the operator during LRN and may reduce laparoscopic complications. Level of evidence: III.

Three-dimensional-two-dimensional mixed display system using integral imaging with an active pinhole array on a liquid crystal panel

2008 ◽  
Vol 47 (13) ◽  
pp. 2207 ◽  
Author(s):  
Heejin Choi ◽  
Joohwan Kim ◽  
Seong-Woo Cho ◽  
Yunhee Kim ◽  
Jae Byung Park ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Three Dimensional ◽  
Two Dimensional ◽  
Display System ◽  
Integral Imaging ◽  
Liquid Crystal Panel
Sign in / Sign up

Export Citation Format

Share Document