Single-Shot Real-Time Ultrafast Imaging of Femtosecond Laser Fabrication

ACS Photonics ◽  
2021 ◽  
Author(s):  
Yunhua Yao ◽  
Yilin He ◽  
Dalong Qi ◽  
Fengyan Cao ◽  
Jiali Yao ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Real Time ◽  
Single Shot ◽  
Laser Fabrication ◽  
Ultrafast Imaging

Femtosecond laser fabrication of scattering medium by randomly distributed holes in polymer

2009 ◽  
Author(s):  
Osamu Matoba ◽  
Yuri Kitamura ◽  
Tomoyuki Manabe ◽  
Kouichi Nitta ◽  
Wataru Watanabe
Keyword(s):  
Femtosecond Laser ◽  
Scattering Medium ◽  
Laser Fabrication

scholarly journals Real-time and single shot CMR increases throughput and improves reliability

2012 ◽  
Vol 14 (S1) ◽  
Author(s):  
Abdul Wattar ◽  
Subha V Raman ◽  
Orlando P Simonetti
Keyword(s):  
Real Time ◽  
Single Shot

scholarly journals Real-time switching dynamics of ferroelectric tunnel junctions under single-shot voltage pulses

2018 ◽  
Vol 113 (23) ◽  
pp. 232902 ◽  
Author(s):  
S. Boyn ◽  
A. Chanthbouala ◽  
S. Girod ◽  
C. Carrétéro ◽  
A. Barthélémy ◽  
...  
Keyword(s):  
Real Time ◽  
Tunnel Junctions ◽  
Single Shot ◽  
Time Switching ◽  
Switching Dynamics ◽  
Voltage Pulses

Evaluating fetal head dimension changes during labor using open magnetic resonance imaging

2017 ◽  
Vol 45 (3) ◽  
Author(s):  
Christian Bamberg ◽  
Jan Deprest ◽  
Nikhil Sindhwani ◽  
Ulf Teichgräberg ◽  
Felix Güttler ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Real Time ◽  
Vaginal Delivery ◽  
Single Shot ◽  
Resonance Imaging ◽  
Midsagittal Plane ◽  
Fetal Head ◽  
Second Stage ◽  
Open Magnetic Resonance Imaging

AbstractAim:Fetal skull molding is important for the adaptation of the head to the birth canal during vaginal delivery. Importantly, the fetal head must rotate around the maternal symphysis pubis. The goals of this analysis were to observe a human birth in real-time using an open magnetic resonance imaging (MRI) scanner and describe the fetal head configuration during expulsion.Methods:Real-time cinematic MRI series (TSE single-shot sequence, TR 1600 ms, TE 150 ms) were acquired from the midsagittal plane of the maternal pelvis during the active second stage of labor at 37 weeks of gestation. Frame-by-frame analyses were performed to measure the frontooccipital diameter (FOD) and distance from the vertex to the base of the fetal skull.Results:During vaginal delivery in an occiput anterior position, the initial FOD was 10.3 cm. When expulsion began, the fetal skull was deformed and elongated, with the FOD increasing to 10.8 cm and 11.2 cm at crowning. In contrast, the distance from the vertex to the base of the skull was reduced from 6.4 cm to 5.6 cm at expulsion.Conclusions:Fetal head molding is the change in the fetal head due to the forces of labor. The biomechanics of this process are poorly understood. Our visualization of the normal mechanism of late second-stage labor shows that MRI technology can for the first time help define the changes in the diameters of the fetal head during active labor.

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