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Urakov A, Urakova N, Samorodov A, Shabanov P, Yagudin I, Stolyarenko A, Suntsova D, Muhutdinov N. Thermal imaging of local skin temperature as part of quality and safety assessment of injectable drugs. Heliyon 2024; 10:e23417. [PMID: 38192864 PMCID: PMC10771983 DOI: 10.1016/j.heliyon.2023.e23417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 12/02/2023] [Accepted: 12/04/2023] [Indexed: 01/10/2024] Open
Abstract
Injection of high-quality drugs can occasionally cause unexpected and unexplained local complications. As the current standard for drug quality control does not include an assessment of the local irritation effects of drugs, this effect may cause postinjection complications. Simultaneously, local irritation effects of the drugs can be assessed based on local tissue inflammation. The dynamics of local temperature can assess inflammation. Infrared monitoring of local skin temperature dynamics at subcutaneous, intramuscular, and intravenous injection sites of drugs under experimental and clinical conditions can improve their quality and safety. Therefore, there is a need to include dynamic thermography in the standard of biological evaluation of the quality and safety of drugs in the dosage form "solution for injections." This eliminates the local irritation and necrotizing activity of drugs and minimizes the development of local pain syndrome, aseptic inflammation, necrosis, and abscess.
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Affiliation(s)
- Aleksandr Urakov
- Department of General and Clinical Pharmacology, Izhevsk State Medical University, Izhevsk, Russia
- Department of Inventions and Patents, Institute of Thermology, Izhevsk, Russia
| | - Natalya Urakova
- Department of General and Clinical Pharmacology, Izhevsk State Medical University, Izhevsk, Russia
- Department of Inventions and Patents, Institute of Thermology, Izhevsk, Russia
| | | | - Petr Shabanov
- Department of Neuropharmacology, Institute of Experimental Medicine, Saint Petersburg, Russia
| | - Ilnur Yagudin
- Department of General and Clinical Pharmacology, Izhevsk State Medical University, Izhevsk, Russia
| | - Anastasia Stolyarenko
- Department of General and Clinical Pharmacology, Izhevsk State Medical University, Izhevsk, Russia
| | - Darya Suntsova
- Department of General and Clinical Pharmacology, Izhevsk State Medical University, Izhevsk, Russia
| | - Nikita Muhutdinov
- Department of General and Clinical Pharmacology, Izhevsk State Medical University, Izhevsk, Russia
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Lahmiri S, Tadj C, Gargour C. Nonlinear Statistical Analysis of Normal and Pathological Infant Cry Signals in Cepstrum Domain by Multifractal Wavelet Leaders. ENTROPY (BASEL, SWITZERLAND) 2022; 24:1166. [PMID: 36010830 PMCID: PMC9407617 DOI: 10.3390/e24081166] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/25/2021] [Revised: 04/06/2022] [Accepted: 08/19/2022] [Indexed: 06/15/2023]
Abstract
Multifractal behavior in the cepstrum representation of healthy and unhealthy infant cry signals is examined by means of wavelet leaders and compared using the Student t-test. The empirical results show that both expiration and inspiration signals exhibit clear evidence of multifractal properties under healthy and unhealthy conditions. In addition, expiration and inspiration signals exhibit more complexity under healthy conditions than under unhealthy conditions. Furthermore, distributions of multifractal characteristics are different across healthy and unhealthy conditions. Hence, this study improves the understanding of infant crying by providing a complete description of its intrinsic dynamics to better evaluate its health status.
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Affiliation(s)
- Salim Lahmiri
- Department of Supply Chain and Business Technology Management, John Molson School of Business, Concordia University, Montreal, QC H3G 1M8, Canada
- Department of Electrical Engineering, École de Technologie Supérieure, Montreal, QC H3C 1K3, Canada
| | - Chakib Tadj
- Department of Electrical Engineering, École de Technologie Supérieure, Montreal, QC H3C 1K3, Canada
| | - Christian Gargour
- Department of Electrical Engineering, École de Technologie Supérieure, Montreal, QC H3C 1K3, Canada
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Attuel G, Gerasimova-Chechkina E, Argoul F, Yahia H, Arneodo A. Multifractal Desynchronization of the Cardiac Excitable Cell Network During Atrial Fibrillation. II. Modeling. Front Physiol 2019; 10:480. [PMID: 31105585 PMCID: PMC6492055 DOI: 10.3389/fphys.2019.00480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2018] [Accepted: 04/05/2019] [Indexed: 11/13/2022] Open
Abstract
In a companion paper (I. Multifractal analysis of clinical data), we used a wavelet-based multiscale analysis to reveal and quantify the multifractal intermittent nature of the cardiac impulse energy in the low frequency range ≲ 2Hz during atrial fibrillation (AF). It demarcated two distinct areas within the coronary sinus (CS) with regionally stable multifractal spectra likely corresponding to different anatomical substrates. The electrical activity also showed no sign of the kind of temporal correlations typical of cascading processes across scales, thereby indicating that the multifractal scaling is carried by variations in the large amplitude oscillations of the recorded bipolar electric potential. In the present study, to account for these observations, we explore the role of the kinetics of gap junction channels (GJCs), in dynamically creating a new kind of imbalance between depolarizing and repolarizing currents. We propose a one-dimensional (1D) spatial model of a denervated myocardium, where the coupling of cardiac cells fails to synchronize the network of cardiac cells because of abnormal transjunctional capacitive charging of GJCs. We show that this non-ohmic nonlinear conduction 1D modeling accounts quantitatively well for the "multifractal random noise" dynamics of the electrical activity experimentally recorded in the left atrial posterior wall area. We further demonstrate that the multifractal properties of the numerical impulse energy are robust to changes in the model parameters.
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Affiliation(s)
- Guillaume Attuel
- Geometry and Statistics in Acquisition Data, Centre de Recherche INRIA, Talence, France
| | | | - Françoise Argoul
- Laboratoire Ondes et Matières d'Aquitaine, Université de Bordeaux, UMR 5798, CNRS, Talence, France
| | - Hussein Yahia
- Geometry and Statistics in Acquisition Data, Centre de Recherche INRIA, Talence, France
| | - Alain Arneodo
- Laboratoire Ondes et Matières d'Aquitaine, Université de Bordeaux, UMR 5798, CNRS, Talence, France
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Zade MA, Khodadadi H. Fuzzy controller design for breast cancer treatment based on fractal dimension using breast thermograms. IET Syst Biol 2019; 13:1-7. [PMID: 30774110 DOI: 10.1049/iet-syb.2018.5020] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
In this study, three non-linear indices consist of compression, one-dimensional (1D) and two-dimensional (2D) fractal dimensions are used for the determination of the malignancy or benignity of cancer tumours in breast thermograms. On the other hand, by developing the high-precision infrared cameras as well as new methods of image processing, biomedical thermography images have found a prominent position among the others. Furthermore, cancerous tissue can be affected by the laser. In this study, in order to treat the cancerous lesion identified by breast thermograms, the laser parameters are designed. The basis of controller designing is the obtained non-linear indices. If the indices are moved from the chaotic behaviour to normal condition, the treating tissue is going from cancerous to a healthy condition and the treatment process is completed. Radiation frequency and the energy density of laser are designed as two key elements in the cancer treatment. In this study, the type I and type II fuzzy controllers are employed for the control strategies. Using the proposed closed-loop control, the non-linear indices of the cancerous lesion will be reduced during the treatment process. The simulation results on two datasets of breast thermograms indicate the superiority of type II fuzzy controller.
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Affiliation(s)
- Maryam Arab Zade
- Department of Electrical Engineering, Khomeinishahr Branch, Islamic Azad University, Isfahan, Iran
| | - Hamed Khodadadi
- Department of Electrical Engineering, Khomeinishahr Branch, Islamic Azad University, Isfahan, Iran.
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Automatic detection of perforator vessels using infrared thermography in reconstructive surgery. Int J Comput Assist Radiol Surg 2018; 14:501-507. [PMID: 30519870 DOI: 10.1007/s11548-018-1892-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Accepted: 11/28/2018] [Indexed: 10/27/2022]
Abstract
PURPOSE Knowing the location of the blood vessels supplying the skin and subcutaneous tissue is a requirement during the planning of tissue transfer in reconstructive surgery. Commonly used imaging techniques such as computed tomography angiography and indocyanine green angiography expose the patient to radiation or a contrast agent, respectively. Infrared thermal imaging was evaluated with success as a non-invasive alternative. To support the interpretation of thermograms, a method to automatically detect the perforators was developed and evaluated. METHODS A system consisting of a thermal camera, a PC and custom software was developed. The temperature variations of the skin surface were analysed to extract the perforator locations. A study was conducted to assess the performance of the algorithm by comparing the detection results of the algorithm with manually labelled thermal images by two clinicians of the deep inferior epigastric perforator flap of 20 healthy volunteers. RESULTS The F measure, precision and recall were used to evaluate the system performance. The median F measure is 0.833, the median precision is 0.80, and the median recall is 0.907. CONCLUSION The results of this study showed that it is possible to automatically and reliably detect the skin perforators in thermograms despite their weak temperature signature. Infrared thermal imaging is a non-invasive and contactless approach suitable for intraoperative use. Combined with a computer-assisted tool for the automatic detection of perforator vessels, it is a relevant alternative intraoperative imaging method to the standard indocyanine green angiography.
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Attuel G, Gerasimova-Chechkina E, Argoul F, Yahia H, Arneodo A. Multifractal Desynchronization of the Cardiac Excitable Cell Network During Atrial Fibrillation. I. Multifractal Analysis of Clinical Data. Front Physiol 2018; 8:1139. [PMID: 29632492 PMCID: PMC5880174 DOI: 10.3389/fphys.2017.01139] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Accepted: 12/24/2017] [Indexed: 12/19/2022] Open
Abstract
Atrial fibrillation (AF) is a cardiac arrhythmia characterized by rapid and irregular atrial electrical activity with a high clinical impact on stroke incidence. Best available therapeutic strategies combine pharmacological and surgical means. But when successful, they do not always prevent long-term relapses. Initial success becomes all the more tricky to achieve as the arrhythmia maintains itself and the pathology evolves into sustained or chronic AF. This raises the open crucial issue of deciphering the mechanisms that govern the onset of AF as well as its perpetuation. In this study, we develop a wavelet-based multi-scale strategy to analyze the electrical activity of human hearts recorded by catheter electrodes, positioned in the coronary sinus (CS), during episodes of AF. We compute the so-called multifractal spectra using two variants of the wavelet transform modulus maxima method, the moment (partition function) method and the magnitude cumulant method. Application of these methods to long time series recorded in a patient with chronic AF provides quantitative evidence of the multifractal intermittent nature of the electric energy of passing cardiac impulses at low frequencies, i.e., for times (≳0.5 s) longer than the mean interbeat (≃ 10-1 s). We also report the results of a two-point magnitude correlation analysis which infers the absence of a multiplicative time-scale structure underlying multifractal scaling. The electric energy dynamics looks like a "multifractal white noise" with quadratic (log-normal) multifractal spectra. These observations challenge concepts of functional reentrant circuits in mechanistic theories of AF, still leaving open the role of the autonomic nervous system (ANS). A transition is indeed observed in the computed multifractal spectra which group according to two distinct areas, consistently with the anatomical substrate binding to the CS, namely the left atrial posterior wall, and the ligament of Marshall which is innervated by the ANS. In a companion paper (II. Modeling), we propose a mathematical model of a denervated heart where the kinetics of gap junction conductance alone induces a desynchronization of the myocardial excitable cells, accounting for the multifractal spectra found experimentally in the left atrial posterior wall area.
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Affiliation(s)
- Guillaume Attuel
- Geometry and Statistics in Acquisition Data, Centre de Recherche INRIA, Talence, France
| | | | - Francoise Argoul
- Laboratoire Ondes et Matières d'Aquitaine, Université de Bordeaux, Centre National de la Recherche Scientifique, UMR 5798, Talence, France
| | - Hussein Yahia
- Geometry and Statistics in Acquisition Data, Centre de Recherche INRIA, Talence, France
| | - Alain Arneodo
- Laboratoire Ondes et Matières d'Aquitaine, Université de Bordeaux, Centre National de la Recherche Scientifique, UMR 5798, Talence, France
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Deliège A, Nicolay S. Extracting oscillating components from nonstationary time series: A wavelet-induced method. Phys Rev E 2017; 96:033307. [PMID: 29346904 DOI: 10.1103/physreve.96.033307] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Indexed: 11/07/2022]
Abstract
This paper consists in the description and application of a method called wavelet-induced mode extraction (WIME) in the context of time-frequency analysis. WIME aims to extract the oscillating components that build amplitude modulated-frequency modulated signals. The essence of this technique relies on the successive extractions of the dominant ridges of wavelet-based time-frequency representations of the signal under consideration. Our tests on simulated examples indicate strong decomposition and reconstruction skills, trouble-free handling of crossing trajectories in the time-frequency plane, sharp performances in frequency detection in the case of mode-mixing problems, and a natural tolerance to noise. These results are compared with those obtained with empirical mode decomposition. We also show that WIME still gives meaningful results with real-life data, namely, the Oceanic Niño Index.
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Affiliation(s)
- Adrien Deliège
- Department of Mathematics, University of Liège, Liège, Belgium
| | - Samuel Nicolay
- Department of Mathematics, University of Liège, Liège, Belgium
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Lee K, Kim H, Lee JH, Jeong H, Shin SA, Han T, Seo YL, Yoo Y, Nam SE, Park JH, Park YM. Retrospective observation on contribution and limitations of screening for breast cancer with mammography in Korea: detection rate of breast cancer and incidence rate of interval cancer of the breast. BMC WOMENS HEALTH 2016; 16:72. [PMID: 27863517 PMCID: PMC5116177 DOI: 10.1186/s12905-016-0351-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Accepted: 11/03/2016] [Indexed: 12/19/2022]
Abstract
Background The purpose of this study was to determine the benefits and limitations of screening for breast cancer using mammography. Methods Descriptive design with follow-up was used in the study. Data from breast cancer screening and health insurance claim data were used. The study population consisted of all participants in breast cancer screening from 2009 to 2014. Crude detection rate, positive predictive value and sensitivity and specificity of breast cancer screening and, incidence rate of interval cancer of the breast were calculated. Results The crude detection rate of breast cancer screening per 100,000 participants increased from 126.3 in 2009 to 182.1 in 2014. The positive predictive value of breast cancer screening per 100,000 positives increased from 741.2 in 2009 to 1,367.9 in 2014. The incidence rate of interval cancer of the breast per 100,000 negatives increased from 51.7 in 2009 to 76.3 in 2014. The sensitivities of screening for breast cancer were 74.6% in 2009 and 75.1% in 2014 and the specificities were 83.1% in 2009 and 85.7% in 2014. Conclusions To increase the detection rate of breast cancer by breast cancer screening using mammography, the participation rate should be higher and an environment where accurate mammography and reading can be performed and reinforcement of quality control are required. To reduce the incidence rate of interval cancer of the breast, it will be necessary to educate women after their 20s to perform self-examination of the breast once a month regardless of participation in screening for breast cancer.
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Affiliation(s)
- Kunsei Lee
- Departments of Preventive Medicine, School of Medicine, Konkuk University, 1 Hwayang-dong, Gwangjin-gu, Seoul, 143-701, South Korea
| | - Hyeongsu Kim
- Departments of Preventive Medicine, School of Medicine, Konkuk University, 1 Hwayang-dong, Gwangjin-gu, Seoul, 143-701, South Korea.
| | - Jung Hyun Lee
- Departments of Preventive Medicine, School of Medicine, Konkuk University, 1 Hwayang-dong, Gwangjin-gu, Seoul, 143-701, South Korea
| | - Hyoseon Jeong
- Departments of Preventive Medicine, School of Medicine, Konkuk University, 1 Hwayang-dong, Gwangjin-gu, Seoul, 143-701, South Korea
| | - Soon Ae Shin
- Bigdata Steering Department, National Health Insurance Service, Wonju, South Korea
| | - Taehwa Han
- Yonsei University Health System, College of Medicine, Yonsei University, Seoul, South Korea
| | - Young Lan Seo
- Department of Radiology, Kangdong Seong-Sim Hospital, College of Medicine, Hallym University, Seoul, South Korea
| | - Youngbum Yoo
- Departments of Surgery, School of Medicine, Konkuk University, Seoul, South Korea
| | - Sang Eun Nam
- Departments of Surgery, School of Medicine, Konkuk University, Seoul, South Korea
| | - Jong Heon Park
- Bigdata Steering Department, National Health Insurance Service, Wonju, South Korea
| | - Yoo Mi Park
- Medical and Health Policy Division, Seoul Metropolitan Government, Seoul, South Korea
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