scholarly journals Pilot tone navigation for respiratory and cardiac motion‐resolved free‐running 5D flow MRI

2021 ◽  
Author(s):  
Mariana B. L. Falcão ◽  
Lorenzo Di Sopra ◽  
Liliana Ma ◽  
Mario Bacher ◽  
Jérôme Yerly ◽  
...  
Keyword(s):  
Cardiac Motion ◽  
Flow Mri ◽  
Free Running

scholarly journals 5D Flow MRI: A Fully Self-gated, Free-running Framework for Cardiac and Respiratory Motion–resolved 3D Hemodynamics

2020 ◽  
Vol 2 (6) ◽  
pp. e200219
Author(s):  
Liliana E. Ma ◽  
Jérôme Yerly ◽  
Davide Piccini ◽  
Lorenzo Di Sopra ◽  
Christopher W. Roy ◽  
...  
Keyword(s):  
Respiratory Motion ◽  
Flow Mri ◽  
Free Running

scholarly journals Erratum: 5D Flow MRI: A Fully Self-gated, Free-running Framework for Cardiac and Respiratory Motion–resolved 3D Hemodynamics

2021 ◽  
Vol 3 (3) ◽  
pp. e219001
Author(s):  
Liliana E. Ma ◽  
Jérôme Yerly ◽  
Davide Piccini ◽  
Lorenzo Di Sopra ◽  
Christopher W. Roy ◽  
...  
Keyword(s):  
Respiratory Motion ◽  
Flow Mri ◽  
Free Running

4D-Flow MRI: Beyond the Images

2020 ◽  
Vol 32 (1) ◽  
pp. 35
Author(s):  
Pietro Sergio ◽  
Antonio Miceli
Keyword(s):  
4D Flow Mri ◽  
4D Flow ◽  
Flow Mri

Phase Noise Measurement of Optical Heterodyning Two-Tone Signal Generated by Two Free-Running Lasers

2013 ◽  
Vol E96.C (2) ◽  
pp. 241-244
Author(s):  
Ryuta YAMANAKA ◽  
Taka FUJITA ◽  
Hideyuki SOTOBAYASHI ◽  
Atsushi KANNO ◽  
Tetsuya KAWANISHI
Keyword(s):  
Phase Noise ◽  
Noise Measurement ◽  
Tone Signal ◽  
Free Running

Fault Localization and Functional Testing of ICs by Lock-in Thermography

2002 ◽  
Author(s):  
O. Breitenstein ◽  
J.P. Rakotoniaina ◽  
F. Altmann ◽  
J. Schulz ◽  
G. Linse
Keyword(s):  
Spatial Resolution ◽  
Electronic Device ◽  
Imaging Techniques ◽  
Heat Diffusion ◽  
Acquisition Time ◽  
Temperature Modulation ◽  
Heat Sources ◽  
Ir Camera ◽  
Free Running ◽  
Lock In

Abstract In this paper new thermographic techniques with significant improved temperature and/or spatial resolution are presented and compared with existing techniques. In infrared (IR) lock-in thermography heat sources in an electronic device are periodically activated electrically, and the surface is imaged by a free-running IR camera. By computer processing and averaging the images over a certain acquisition time, a surface temperature modulation below 100 µK can be resolved. Moreover, the effective spatial resolution is considerably improved compared to stead-state thermal imaging techniques, since the lateral heat diffusion is suppressed in this a.c. technique. However, a serious limitation is that the spatial resolution is limited to about 5 microns due to the IR wavelength range of 3 -5 µm used by the IR camera. Nevertheless, we demonstrate that lock-in thermography reliably allows the detection of defects in ICs if their power exceeds some 10 µW. The imaging can be performed also through the silicon substrate from the backside of the chip. Also the well-known fluorescent microthermal imaging (FMI) technique can be be used in lock-in mode, leading to a temperature resolution in the mK range, but a spatial resolution below 1 micron.

Sign in / Sign up

Export Citation Format

Share Document