An Improved Instrument for Real-Time Measurement of Blood Flow Velocity in Microvessels

2007 ◽  
Vol 56 (6) ◽  
pp. 2663-2671 ◽  
Author(s):  
Francesca Sapuppo ◽  
Maide Bucolo ◽  
Marcos Intaglietta ◽  
Paul C. Johnson ◽  
Luigi Fortuna ◽  
...  
Keyword(s):  
Blood Flow ◽  
Flow Velocity ◽  
Real Time ◽  
Blood Flow Velocity ◽  
Time Measurement ◽  
Real Time Measurement

Imaging of basilar artery and measurement of blood flow velocity by real-time color flow Doppler ultrasonography.

Nosotchu ◽  
1993 ◽  
Vol 15 (2) ◽  
pp. 87-90
Author(s):  
Kazumi Kimura ◽  
Yoichiro Hashimoto ◽  
Toshihide Kumamoto ◽  
Kiyoshi Shima ◽  
Masayuki Ando
Keyword(s):  
Blood Flow ◽  
Flow Velocity ◽  
Real Time ◽  
Basilar Artery ◽  
Blood Flow Velocity ◽  
Doppler Ultrasonography ◽  
Color Flow

Direct, real time measurement of meniscal blood flow

1988 ◽  
Vol 16 (5) ◽  
pp. 429-433 ◽  
Author(s):  
Marc F. Swiontkowski ◽  
Frank Schlehr ◽  
Roy Sanders ◽  
Thomas A. Limbird ◽  
Adrienne Pou ◽  
...  
Keyword(s):  
Blood Flow ◽  
Real Time ◽  
Time Measurement ◽  
Real Time Measurement

scholarly journals Blood Flow Velocity of the Middle Cerebral Arteries: A Real-Time Measure of Attentional Load in the Laparoscopic Surgery Environment?

2019 ◽  
Vol 63 (1) ◽  
pp. 1481-1482
Author(s):  
Martina I. Klein ◽  
Eleanor K. Foster ◽  
Eric T. Greenlee
Keyword(s):  
Blood Flow ◽  
Laparoscopic Surgery ◽  
Flow Velocity ◽  
Real Time ◽  
Blood Flow Velocity ◽  
Cerebral Arteries ◽  
Attentional Resource ◽  
Attentional Load ◽  
Middle Cerebral Arteries ◽  
Over Time

Laparoscope (camera) rotations in laparoscopic surgery, and the resulting perceptual-motor distortions, increases the workload (attentional load) of surgeons. When attentional load is high, risks of surgical errors and patient injury increase. Blood flow velocity (BFV) changes of the middle cerebral arteries (MCAs) may serve as a real-time measure of attentional load in this environment. Seventeen undergraduates performed a laparoscopic training task (peg-transfer task) in a laparoscopic simulator at a non-rotated camera angle (0° condition−camera directly in front of the participant) and a rotated condition (camera was rotated 135° to the side). Performance (transfer speed) was superior in the 0° condition and performance in both camera conditions improved over time. Further, BFV was greater at the 135° rotation and declined over time in both conditions. The decline in BFV co-occurred with improved peg-transfer performance that occurred in both camera conditions. The results suggest that BFV changes of the MCAs are a sensitive indicator of attentional load induced by the perceptual-motor distortions inherent in laparoscopy. Thus, it may be possible to use BFV changes of the MCAs, a non-invasive measure, to assess real-time attentional load and attentional resource utilization in the surgical environment

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