Size distribution of human albumin microspheres by forward scattering of monochromatic light

1976 ◽  
Vol 3 (2) ◽  
pp. 69-73
Author(s):  
Thomas N. Padikal ◽  
James G. Kereiakes ◽  
Philip J. Robbins
Radiology ◽  
1970 ◽  
Vol 95 (1) ◽  
pp. 101-107 ◽  
Author(s):  
John A. Burdine ◽  
Robert E. Sonnemaker ◽  
Linda A. Ryder ◽  
Harlan L. Spiut

Circulation ◽  
1972 ◽  
Vol 46 (5) ◽  
pp. 963-975 ◽  
Author(s):  
DANIEL A. WELLER ◽  
ROBERT J. ADOLPH ◽  
HENRY N. WELLMAN ◽  
ROBERT G. CARROLL ◽  
ONJA KIM

1988 ◽  
Vol 27 (05) ◽  
pp. 195-199 ◽  
Author(s):  
F. Boccaletto ◽  
M. Magalini ◽  
G. Chiara ◽  
T. Tommaseo ◽  
L. Dapporto ◽  
...  

Of 29 Billroth II gastrojejunostomy patients studied by scintigraphy, 11 were dumpers and 18 were non-dumpers; of 20 controls, 11 were patients with different gastric complaints and 9 volunteers with no history of gastrointestinal pathology. The tracer used was human albumin microspheres labelled with 99mTc, mixed thoroughly with a fresh scrambled egg, cooked as an omelet and eaten as a sandwich with white toasted bread. The transit and emptying of the radiolabelled meal in the gastric and derivative loop areas were followed with a gamma camera 90-120 min. In the dumpers half-emptying times were significantly shorter than in the controls; in the non-dumpers they were even shorter. Dynamic selective analysis of the radiolabelled food transit through derivative afferent and efferent loops showed, on the other hand, different patterns for the two groups of gastroresected patients: the progression of propulsive waves was very irregular and constantly hyperperistaltic only in the dumpers.


2019 ◽  
Vol 86 (1) ◽  
pp. 34-44 ◽  
Author(s):  
Liang Shan ◽  
Liang Xu ◽  
Lixia Cao ◽  
Bo Hong ◽  
Daodang Wang ◽  
...  

AbstractIn the small-angle forward scattering technique, an inversion method of particle size distribution (PSD) using artificial fish swarm algorithm (AFSA) is proposed, which can acquire optimal characteristic parameters of the PSD. Simulations are performed to verify the effectiveness of AFSA, in which spheroidal particles of a unimodal distribution that conforms to Johnson’s {\mathrm{S}_{\mathrm{B}}} function is inversed at different levels of gaussian white noise. The comparison of the smooth objective function and non-smooth objective function of AFSA is conducted and discussed.The measurement system of the small-angle forward scattering based on Mie scattering theory is constructed and experiments are performed to verify the practicability of AFSA. A CCD sensor is adopted to receive the scattered light instead of the conventional photodetector. Pinhole is first proposed to replace standard particles and calibrate the measurement system, which can eliminate the influence of particle concentration. After the calibration experiments, the PSD of standardized polystyrene microspheres are measured and modified. Both the simulation and experiment results indicate that the PSD can be successfully inverted by AFSA with high reliability and stability in certain conditions, and the system calibration can further improve the inversion accuracy.


2019 ◽  
Vol 48 (1) ◽  
pp. 117001 ◽  
Author(s):  
单 良 Shan Liang ◽  
徐 良 Xu Liang ◽  
洪 波 Hong Bo ◽  
曹丽霞 Cao Lixia ◽  
王道档 Wang Daodang ◽  
...  

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