Hemoglobin spectra and employed wavelengths affect estimation of concentration and oxygen saturation: blood-lipid phantom study

2021 ◽  
Author(s):  
Aleh Sudakou ◽  
Anna Gerega ◽  
Helene Isler ◽  
Piotr Sawosz ◽  
Daniel Ostojic ◽  
...  
Keyword(s):  
Oxygen Saturation ◽  
Blood Lipid ◽  
Phantom Study ◽  
Hemoglobin Spectra

scholarly journals Hemoglobin spectra affect measurement of tissue oxygen saturation

2018 ◽  
Author(s):  
Martin Wolf ◽  
Helene Isler ◽  
Daniel Ostojic ◽  
Stefan Kleiser ◽  
Nassim Nasseri ◽  
...  
Keyword(s):  
Oxygen Saturation ◽  
Tissue Oxygen Saturation ◽  
Tissue Oxygen ◽  
Hemoglobin Spectra

Effects of the Tibetan herbal preparation PADMA 28 on blood lipids and lipid oxidisability in subjects with mild hypercholesterolaemia

VASA ◽  
2005 ◽  
Vol 34 (1) ◽  
pp. 11-17 ◽  
Author(s):  
Brunner-La Rocca ◽  
Schindler ◽  
Schlumpf ◽  
Saller ◽  
Suter
Keyword(s):  
Endothelial Dysfunction ◽  
Blood Lipids ◽  
Ex Vivo ◽  
Hdl Cholesterol ◽  
Blood Lipid ◽  
Tibetan Medicine ◽  
Double Blind ◽  
Intraarterial Infusion ◽  
Padma 28

Background: Previous studies showed an anti-atherosclerotic effect of PADMA 28, an herbal formula based on Tibetan medicine. As the mechanisms of action are not fully understood, we investigated whether PADMA 28 may lower blood lipids and lipid oxidisability, and affect early endothelial dysfunction. Patients and methods: Sixty otherwise healthy subjects with total cholesterol ≥5.2 mmol/l and < 8.0 mmol/l were randomly assigned to placebo or PADMA 28, 3 x 2 capsules daily, for 4 weeks (double-blind). Blood lipids (total, LDL-, and HDL-cholesterol, triglycerides, Apo-lipoprotein A1 and B) and ex vivo lipid oxidisability were measured before and after treatment. In a subset of 24 subjects, endothelial function was assessed using venous occlusion plethysmography with intraarterial infusion of acetylcholine. Isolated LDL and plasma both untreated and pre-treated with PADMA 28 extract were oxidised by the radical generator AAPH. Conjugated diene formation was measured at 245 nm. Results: Blood lipids did not change during the study in both groups. In contrast to previous reports in mild hypercholesterolaemia, no endothelial dysfunction was seen and, consequently, was not influenced by therapy. Ex vivo blood lipid oxidisability was significantly reduced with PADMA 28 (area under curve: 5.29 ± 1.62 to 4.99 ± 1.46, p = 0.01), and remained unchanged in the placebo group (5.33 ± 1.88 to 5.18 ± 1.78, p > 0.1). This effect persisted one week after cessation of medication. In vitro experiments confirmed the prevention of lipid peroxidation in the presence of PADMA 28 extracts. Persistent protection was also seen for LDL isolated from PADMA 28-pretreated blood after being subjected to rigorous purification. Conclusions: This study suggests that the inhibition of blood lipid oxidisability by PADMA 28 may play a role in its anti-atherosclerotic effect.

Quality control of elastography quantification: a phantom study

2015 ◽  
Vol 53 (08) ◽  
Author(s):  
R Kubale ◽  
T Fuhrmann ◽  
A Arslanow ◽  
F Frenzel ◽  
P Minko ◽  
...  
Keyword(s):  
Quality Control ◽  
Phantom Study

Emission time optimisation for Ga-68-PSMA with a digital PET/CT – a phantom study

2020 ◽  
Author(s):  
PF Costa ◽  
F Süßelbeck ◽  
A Bramer ◽  
M Conti ◽  
M Weber ◽  
...  
Keyword(s):  
Phantom Study ◽  
Pet Ct ◽  
Emission Time ◽  
Digital Pet

The effect of technical factors on hue distribution in elastographic images: a phantom study

2008 ◽  
Vol 29 (S 1) ◽  
Author(s):  
SM Dudea ◽  
C Botar-Jid ◽  
D Dumitriu ◽  
A Ciurea ◽  
A Chiorean ◽  
...  
Keyword(s):  
Phantom Study ◽  
Technical Factors
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