Real-time 2D imaging in turbid media using a femtosecond Cr/sup 4+/:forsterite laser

2002 ◽  
Author(s):  
E. Ahraham ◽  
E. Bordenave ◽  
N. Tsurumachi ◽  
G. Jonusauskas ◽  
J. Oberle ◽  
...  
Keyword(s):  
Real Time ◽  
Turbid Media ◽  
2D Imaging

scholarly journals Real-time optical manipulation of particles through turbid media

2019 ◽  
Vol 27 (4) ◽  
pp. 4858 ◽  
Author(s):  
Tong Peng ◽  
Runze Li ◽  
Sha An ◽  
Xianghua Yu ◽  
Meiling Zhou ◽  
...  
Keyword(s):  
Real Time ◽  
Turbid Media ◽  
Optical Manipulation

High resolution Real-Time 3-D Imaging through Turbid Media using Photorefractive Holography

1998 ◽  
Author(s):  
R. Jones ◽  
M. Tziraki ◽  
N. P. Barry ◽  
S. C. W. Hyde ◽  
D. Parsons-Karavassilis ◽  
...  
Keyword(s):  
High Resolution ◽  
Real Time ◽  
Turbid Media ◽  
Imaging Through Turbid Media

Real-time 2D Imaging of Thermal and Mechanical Tissue Response to Focused Ultrasound

2010 ◽  
Author(s):  
Dalong Liu ◽  
Emad S. Ebbini ◽  
Kullervo Hynynen ◽  
Jacques Souquet
Keyword(s):  
Real Time ◽  
Focused Ultrasound ◽  
Tissue Response ◽  
2D Imaging ◽  
Mechanical Tissue

Abstract 1873: Initial Experience with Real-Time Three-Dimensional Transesophageal Echocardiography in Patients Undergoing Transcatheter Atrial Septal Defect Closure

Circulation ◽  
2007 ◽  
Vol 116 (suppl_16) ◽  
Author(s):  
Jonathan J Passeri ◽  
Ignacio Inglessis ◽  
Igor F Palacios ◽  
Michael H Picard
Keyword(s):  
Transesophageal Echocardiography ◽  
Real Time ◽  
Three Dimensional ◽  
Maximum Diameter ◽  
Closure Device ◽  
3D Measurements ◽  
Device Selection ◽  
2D Imaging ◽  
Asd Closure ◽  
2D And 3D

Background: Transcatheter closure of atrial septal defects (ASD) is performed with intracardiac or transesophageal echocardiography (TEE) guidance. ASDs often have an elliptical shape and 2D imaging may underestimate the maximum diameter. Three-dimensional (3D) TEE using reconstructed gated acquisitions in multiple planes is a time-consuming process limited by motion artifact, making it impractical for intra-procedural use. Recently, a matrix array TEE capable of real-time 3D (RT3D) imaging has been developed (Philips Medical Systems). Methods: Two-dimensional, Doppler and RT3D TEE images were acquired in 5 patients undergoing ASD closure. Device selection was based on the maximum diameter of the ASD measured by 2D imaging. RT3D images were analyzed using commercially available software (QLab, Philips). The maximum diameter was measured and compared to 2D. Results: The mean maximum diameter was 1.6 ± 0.8 cm using 2D imaging and 2.0 ± 1.1 cm using RT3D images (p=0.16). In the 3 patients with ASDs >2 cm, the maximum diameter was 2.2 ± 0.1 cm by 2D imaging compared to 2.8 ± 0.3 cm by RT3D imaging (p=0.02), an underestimate of 20.7 ± 12.2 %. In the remaining 2 patients with ASDs <1.2 cm, there was good agreement between 2D and 3D measurements. In the 2 patients with the largest discrepancy between 2D and 3D measurements, the initial device selected was retrieved prior to catheter release, due to significant residual shunting or instability along the septum, requiring placement of a larger device. Conclusion: RT3D TEE during transcatheter ASD closure is feasible and may improve defect sizing and device selection during transcatheter ASD closure.

Single shot real-time high-resolution imaging through dynamic turbid media based on deep learning

2022 ◽  
Vol 149 ◽  
pp. 106819
Author(s):  
Huazheng Wu ◽  
Xiangfeng Meng ◽  
Xiulun Yang ◽  
Xianye Li ◽  
Yongkai Yin
Keyword(s):  
Deep Learning ◽  
High Resolution ◽  
Real Time ◽  
Turbid Media ◽  
Single Shot ◽  
High Resolution Imaging ◽  
Resolution Imaging

2D lateral imaging inversion for directional electromagnetic logging-while-drilling measurements

Geophysics ◽  
2019 ◽  
Vol 84 (6) ◽  
pp. D217-D230 ◽  
Author(s):  
Michael Thiel ◽  
Dzevat Omeragic
Keyword(s):  
Real Time ◽  
Reservoir Characterization ◽  
Reservoir Model ◽  
2D Inversion ◽  
Drilling Technology ◽  
2D Imaging ◽  
Logging While Drilling ◽  
1D And 2D Inversion ◽  
Imaging Plane

Deep-directional electromagnetic (EM) logging-while-drilling technology can map reservoir boundaries and fluid contacts for strategic geosteering, reservoir navigation, and more recently, for reservoir characterization. The inversion-based resistivity mapping is used to make real-time geosteering decisions and to refine and update the reservoir model during and after drilling. Traditional 1D and 2D inversion approaches ignore the lateral changes of the reservoir, which are contained in the azimuthally sensitive measurements and only provide a longitudinal 2D representation of the 3D reservoir structure around the well. A new 2D lateral imaging inversion uses the full azimuthal sensitivity of the measurements to map the vertical and lateral resistivity heterogeneities around the wellbore. A 2.5D EM solver is run in a Gauss-Newton optimization to reconstruct the measurements in complex scenarios and determine the 2D anisotropic resistivity distribution in an imaging plane along with the orientation of the formation invariant direction with respect to the wellbore. Continuous 2D imaging along the well path generates a 3D reservoir resistivity map in the proximity of the wellbore.

scholarly journals Real-time imaging through strongly scattering media: seeing through turbid media, instantly

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Sriram Sudarsanam ◽  
James Mathew ◽  
Swapnesh Panigrahi ◽  
Julien Fade ◽  
Mehdi Alouini ◽  
...  
Keyword(s):  
Real Time ◽  
Turbid Media ◽  
Scattering Media ◽  
Real Time Imaging
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