Journal of Biomedical Photonics & Engineering

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Saratov Fall Meeting 2016

26 - 30 September 2016, Saratov State University, Russia

 

The conference program includes:

  • Plenary lectures
  • Three 4-hour courses in the field of biomedical optics and biophotonics for students and junior researchers from world known researhers.
  • U.M.N.I.K.: Special session on student reports on Optics, Laser Physics and Biophotonics

17.05.2016

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Current Issue

Vol 2, No 2 (2016)

Reviews

Optical diffraction tomography techniques for the study of cell pathophysiology
Kim K., Yoon J., Shin S., Lee S., Yang S., Park Y.
Abstract
Three-dimensional imaging of biological cells is crucial for the investigation of cell biology, providing valuable information to reveal the mechanisms behind pathophysiology of cells and tissues. Recent advances in optical diffraction tomography (ODT) have demonstrated the potential for the study of various cells with its unique advantages of quantitative and label-free imaging capability. To provide insight on this rapidly growing field of research and to discuss its applications in biology and medicine, we present the summary of the ODT principle and highlight recent studies utilizing ODT with the emphasis on the applications to the pathophysiology of cells.
Journal of Biomedical Photonics & Engineering. 2016;2(2):020201
pages 020201 views
Diffuse optical mammotomography: state-of-the-art and prospects
Konovalov A.B., Genina E.A., Bashkatov A.N.
Abstract
he principles of diffuse optical tomography (DOT) of tissues are presented. The DOT capabilities as a method of breast cancer diagnostics are analysed. The state-of-the-art of the DOT instrumentation and methodological base in application to solving the mammography problems are described. The significant contribution of Russian scientists to the development of the DOT methodology is emphasised. Basing on the results of the analysis, the authors expect the possibility of soonest entry of diffuse optical mammotomographs to the market of medical imaging instrumentation, and the capability of Russian researchers to take part in the competition for this market.
Journal of Biomedical Photonics & Engineering. 2016;2(2):020202
pages 020202 views

Articles

Detection and Analysis of Heart Rate Variability in Young and Postmenopausal women in Different Postures
Rawal K., Saini B., Saini I.
Abstract

Postmenopause is the naturally occurring stage in woman’s life after the permanent cessation of the menstruation longer than 12 months. The transition from the young to the postmenopausal stage impacts the variation in the heart rate. It is important to analyze and detect the variation in Heart Rate Variability (HRV) between young and postmenopausal women in different postures to understand the impact of the age and physical activities on the autonomic health of heart. The aim of this study is to (i) investigate the effect of autonomic regulations of heart rate in young and postmenopausal women in various postures and (ii) determine the possibilities for the reliable, efficient and accurate HRV analysis signal processing algorithm in detecting HRV variations between young and postmenopausal women. The experiments were performed on 25 young women and 25 old women in the postmenopausal phase. Various linear methods have been applied for analysing and detecting HRV variations between young and postmenopausal women. The results concluded that the postmenopausal group showed significantly lower (p < 0.05) values of SDNN, NN50, pNN50, RMSSD, and HRVTi than young group both in the lying and standing postures. These results indicate a decrease in the parasympathetic activity in postmenopausal as compared to the young women due to the age. Further, the performance of linear methods in detecting HRV variations between postmenopausal and young women in different postures was calculated. It is also concluded from the results that HRVi outperforms other HRV analysis methods in detecting HRV variations between postmenopausal and young women.

Journal of Biomedical Photonics & Engineering. 2016;2(2):020301
pages 020301 views
An improved algorithm of structural image reconstruction with rapid scanning optical delay line for Optical Coherence Tomography
Petrov D.A., Abdulkareem S.N., Ghaleb K.E., Proskurin S.G.
Abstract

A new algorithm of structural image reconstruction in Optical Coherence Tomography is described. The modified rapid scanning optical delay (RSOD) line, low numerical aperture, small angle raster scanning with consecutive averaging and multilevel digital filtering have been used to obtain high quality structural images of an onion and the nail bed of a human thumb. The proposed method significantly improves image contrast and allows visualization of small blood capillaries under the nail plate.

Journal of Biomedical Photonics & Engineering. 2016;2(2):020302
pages 020302 views
Changes of the skin barrier and bacterial colonization after hair removal by clipper and by razor
Jung S., Richter H., Darvin M.E., Schanzer S., Kramer A., Patzelt A., Meinke M.C., Lademann J.
Abstract

Background: Inappropriate hair removal increases the risk of surgical site infections which are associated with a higher morbidity and mortality of surgical patients. Here, the effects of a clipping device and a disposable razor on the skin barrier, microbial burden and surface structure were compared. Methods: Changes in bacterial colonization, transepidermal water loss, antioxidant status and the skin surface structure were investigated on the calves of 12 healthy volunteers. Measurement time points were at baseline (tbase) and 24 hours after hair removal (t24). Results: Both, the disposable razor and the clipper showed a decrease in log colony-forming units count from tbase (mean(tbase) ± standard deviation = 2.6 ± 1.27, median ± standard error = 2.6 ± 0.37) to t24 at prazo r= 0.05 and pclipper = 0.06 respectively. At t24 clipping resulted in a higher reduction of log colony-forming units (mean(t24) = 1.76 ± 0.8, median = 1.69 ± 0.23) compared to the use of the disposable razor (mean(t24) = 1.84 ± 0.85, median = 1.91 ± 0.24). Furthermore, the razor-treated group showed an increase in colony-forming units from t0 to t24, whereas clipping lead to a continuous decrease in colony-forming units from t0 to t24. An enhanced appearance of microlesions and a significant increase of transepidermal water loss after shaving using the disposable razor (p = 0.005) were found indicating skin barrier disruptions. Clipping showed no significant effect on transepidermal water loss. Conclusion: Hair removal using the clipping device results in less disruption of the skin barrier compared to the razor, avoiding the development of microlesions. This could be favorable for the prevention of surgical side infections and postoperative wound management.

Journal of Biomedical Photonics & Engineering. 2016;2(2):020303
pages 020303 views


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