A 3D imaging system integrating photoacoustic and fluorescence orthogonal projections for anatomical, functional and molecular assessment of rodent models

2018 ◽  
Author(s):  
Sergey A. Ermilov ◽  
Hans-Peter F. Brecht ◽  
Vassili Ivanov ◽  
Diego S. Dumani ◽  
Stanislav Y. Emelianov ◽  
...  
Keyword(s):  
3D Imaging ◽  
Imaging System ◽  
Rodent Models ◽  
Orthogonal Projections ◽  
Molecular Assessment

Clinical analysis and efficacy of bimanual surgical treatment of retinal detachment in severe forms of proliferative diabetic retinopathy with preoperative preparation with anti-VEGF drugs in combination with the use of the Ngenuity ALCON 3D imaging system

2021 ◽  
pp. 195-198
Author(s):  
D.V. Chernykh ◽  
Keyword(s):  
Visual Acuity ◽  
Diabetic Retinopathy ◽  
Surgical Treatment ◽  
Retinal Detachment ◽  
Postoperative Period ◽  
3D Imaging ◽  
Imaging System ◽  
3D Visualization ◽  
Preoperative Preparation ◽  
Anti Vegf

The purpose of the study was to evaluate the effectiveness of bimanual surgery with anti-VEGF preparation of patients with severe forms of PDR complicated by traction retinal detachment, with intraoperative use of 3D visualization. Material and methods. Operated on 18 patients with a diagnosis of PDR complicated by traction retinal detachment. Of these, there were 7 patients with type 1 diabetes, type 2 diabetes. There were 5 men and 13 women. The average age was 58 + -2 years. All patients underwent a three-port vitrectomy, using an additional light source, with preoperative preparation with anti-VEGF drugs, using bimanual technique and 3D visualization, using air tamponade. Results and its discussion. As a result of the study, it was found that the visual acuity before the treatment was 0.03 [0.01; 0.1], and 4-6 months after the surgical treatment, 0.3 [0.15; 0.5]. The performed statistical analysis made it possible to establish a statistically significant increase in visual acuity 4-6 months after the treatment. (p = 0.001) Achieved complete anatomical retinal fit. With increased visual acuity. There were 5 complications in the postoperative period. Recurrent hemophthalmos was diagnosed in 3 people, which required repeated surgical intervention. In 2 patients in the postoperative period, DMO developed, which required IVI biodegradable dexamethasone implant. Conclusion. Bimanual, surgical treatment of traction retinal detachments, in severe forms of PDLP, with preoperative preparation with anti-VEGF drugs, and the use of the Ngenuity ALCON 3D imaging system, is one of the effective methods of treatment in this group of patients, and is aimed at reducing both intra and postoperative complications. Key words: рroliferative diabetic retinopathy, vitrectomy, 3D imaging, bimanual surgery, anti-VEGF drugs.

scholarly journals Three-dimensional imaging of hold baggage for airport security

2014 ◽  
Vol XL-5 ◽  
pp. 331-336
Author(s):  
S. Kolokytha ◽  
R. Speller ◽  
S. Robson
Keyword(s):  
3D Imaging ◽  
Imaging System ◽  
Tomographic Reconstruction ◽  
Three Dimensional ◽  
Handling Time ◽  
Cost Effective ◽  
Airport Security ◽  
X Ray ◽  
Common System ◽  
Close Range

This study describes a cost-effective check-in baggage screening system, based on "on-belt tomosynthesis" (ObT) and close-range photogrammetry, that is designed to address the limitations of the most common system used, conventional projection radiography. The latter's limitations can lead to loss of information and an increase in baggage handling time, as baggage is manually searched or screened with more advanced systems. This project proposes a system that overcomes such limitations creating a cost-effective automated pseudo-3D imaging system, by combining x-ray and optical imaging to form digital tomograms. Tomographic reconstruction requires a knowledge of the change in geometry between multiple x-ray views of a common object. This is uniquely achieved using a close range photogrammetric system based on a small network of web-cameras. This paper presents the recent developments of the ObT system and describes recent findings of the photogrammetric system implementation. Based on these positive results, future work on the advancement of the ObT system as a cost-effective pseudo-3D imaging of hold baggage for airport security is proposed.

scholarly journals Cervical Spine Surgery with Intraoperative CT Imaging System using A Self-Moving Helical CT Scanner Gantry enabling Intraoperative 3D Imaging

2001 ◽  
Vol 15 (1) ◽  
pp. 35-40
Author(s):  
Toshiaki Kodera ◽  
Toshihiko Kubota ◽  
Masanori Kabuto ◽  
Yuji Handa ◽  
Hisamasa Ishii ◽  
...  
Keyword(s):  
Cervical Spine ◽  
Spine Surgery ◽  
3D Imaging ◽  
Imaging System ◽  
Helical Ct ◽  
Ct Imaging ◽  
Ct Scanner ◽  
Intraoperative Ct ◽  
Intraoperative 3D Imaging ◽  
Cervical Spine Surgery

scholarly journals Rapid‐accurate anthropometric body shape assessment with low‐cost novel 3D imaging system (391.2)

2014 ◽  
Vol 28 (S1) ◽  
Author(s):  
Kang Zhang ◽  
Jolene Zheng ◽  
Chenfei Gao ◽  
Diana Thomas ◽  
Xin Li ◽  
...  
Keyword(s):  
3D Imaging ◽  
Body Shape ◽  
Imaging System ◽  
Low Cost

3D imaging system for the intelligent excavation system (IES)

2008 ◽  
Author(s):  
M. J. Chae ◽  
H. S. Yoo ◽  
J. R. Kim ◽  
M. Y. Cho ◽  
J. H. Jang ◽  
...  
Keyword(s):  
3D Imaging ◽  
Imaging System

Performance Enhancement of Gain-Modulated 3D Imaging System by Multi-Pulse Accumulation

2013 ◽  
Vol 475-476 ◽  
pp. 259-262
Author(s):  
Fei Wang
Keyword(s):  
3D Imaging ◽  
Performance Enhancement ◽  
Imaging System ◽  
Imaging Systems ◽  
Laser Imaging ◽  
Range Error ◽  
Accumulation Method ◽  
Accuracy Performance

Range accuracy is one of the key parameters for 3D laser imaging systems. A gain-modulated 3D imaging system employing multi-pulse accumulation method is proposed to improve the range accuracy performance. Experiments results show that the range error decreases exponentially with the number of accumulated laser echoes.

scholarly journals Quantifying Variation in Soybean Due to Flood Using a Low-Cost 3D Imaging System

Sensors ◽  
2019 ◽  
Vol 19 (12) ◽  
pp. 2682 ◽  
Author(s):  
Wenyi Cao ◽  
Jing Zhou ◽  
Yanping Yuan ◽  
Heng Ye ◽  
Henry T. Nguyen ◽  
...  
Keyword(s):  
Plant Height ◽  
3D Imaging ◽  
Plant Architecture ◽  
Imaging System ◽  
Low Cost ◽  
Plant Phenotyping ◽  
Soybean Plant ◽  
Plant Canopy ◽  
Petiole Length ◽  
Dry Biomass

Flood has an important effect on plant growth by affecting their physiologic and biochemical properties. Soybean is one of the main cultivated crops in the world and the United States is one of the largest soybean producers. However, soybean plant is sensitive to flood stress that may cause slow growth, low yield, small crop production and result in significant economic loss. Therefore, it is critical to develop soybean cultivars that are tolerant to flood. One of the current bottlenecks in developing new crop cultivars is slow and inaccurate plant phenotyping that limits the genetic gain. This study aimed to develop a low-cost 3D imaging system to quantify the variation in the growth and biomass of soybean due to flood at its early growth stages. Two cultivars of soybeans, i.e. flood tolerant and flood sensitive, were planted in plant pots in a controlled greenhouse. A low-cost 3D imaging system was developed to take measurements of plant architecture including plant height, plant canopy width, petiole length, and petiole angle. It was found that the measurement error of the 3D imaging system was 5.8% in length and 5.0% in angle, which was sufficiently accurate and useful in plant phenotyping. Collected data were used to monitor the development of soybean after flood treatment. Dry biomass of soybean plant was measured at the end of the vegetative stage (two months after emergence). Results show that four groups had a significant difference in plant height, plant canopy width, petiole length, and petiole angle. Flood stress at early stages of soybean accelerated the growth of the flood-resistant plants in height and the petiole angle, however, restrained the development in plant canopy width and the petiole length of flood-sensitive plants. The dry biomass of flood-sensitive plants was near two to three times lower than that of resistant plants at the end of the vegetative stage. The results indicate that the developed low-cost 3D imaging system has the potential for accurate measurements in plant architecture and dry biomass that may be used to improve the accuracy of plant phenotyping.

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