Готові списки джерел за темами / Laser blood flow meter

Добірка наукової літератури з теми "Laser blood flow meter"

Автор: Grafiati

Опубліковано: 30 травня 2022

Оновлено: 31 травня 2022

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Статті в журналах з теми "Laser blood flow meter"

Ono, Ichiro, Takehiko Ohura, Arihei Yamamoto, Masahiko Murazumi, Hitoshi Fujii, and Toshimitu Asakura. "Evaluation of blood flow of flap using laser speckle flow meter." JOURNAL OF JAPAN SOCIETY FOR LASER SURGERY AND MEDICINE 8, no. 3 (1987): 253–54. http://dx.doi.org/10.2530/jslsm1980.8.3_253.

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MURAYAMA, Mitsuo, Tsutomu MIURA, and Hideo BANDO. "A laser flow meter method for evaluating the peripheral blood flow in mice." Folia Pharmacologica Japonica 108, no. 4 (1996): 203–16. http://dx.doi.org/10.1254/fpj.108.203.

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A., Nikhil, K. Sujatha, and Ashlesha Kulkarni. "Laser Doppler Flow Meter: A New Approach for Calculation of Human Blood Flow Rate." International Journal of Computer Applications 127, no. 17 (October 15, 2015): 35–38. http://dx.doi.org/10.5120/ijca2015906721.

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Furuta, Toshiaki, Michihiko Sone, Yasushi Fujimoto, Shunjiro Yagi, Makoto Sugiura, Yuzuru Kamei, Hitoshi Fujii, and Tsutomu Nakashima. "Free Flap Blood Flow Evaluated Using Two-Dimensional Laser Speckle Flowgraphy." International Journal of Otolaryngology 2011 (2011): 1–6. http://dx.doi.org/10.1155/2011/297251.

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Objective. We investigated the efficiency of laser speckle flowgraphy for evaluating blood flow in free flaps used for plastic surgery.Methods. We measured blood flow using a visual laser meter capable of providing two-dimensional color graphic representations of flow distribution for a given area using a dynamic laser speckle effect. Using laser speckle flowgraphy, we examined the blood flow of 20 free flaps applied following the excision of head and neck tumors.Results. After anastomosis of the feeding and draining blood vessels and sewing the flap, musculocutaneous (MC) flaps showed significantly lower blood flow than jejunal or omental flaps (P<.05). The ratio of blood flow decrease from the edge to the center was significantly greater in MC flaps than in jejunal or omental flaps (P<.001).Conclusion. Laser speckle flowgraphy is useful for the perioperative measurement of blood flow in free flaps used in plastic surgery. This method is a highly useful, practical, and reliable tool for assessing cutaneous blood flow and is expected to be applicable to several clinical fields.

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YAMAGUCHI, MIKIO, KUNIHARU AGAWA, HIROYUKI KANETAKE, YASUO KOIKE, and KENZI KASHIMA. "Measurement of blood flow in human tympanic membrane with spectrophotometory and laser speckle flow meter." Nippon Jibiinkoka Gakkai Kaiho 93, no. 9 (1990): 1354–62. http://dx.doi.org/10.3950/jibiinkoka.93.1354.

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Pershing, Lynn K., Sue Huether, Rebecca L. Conklin, and Gerald G. Krueger. "Cutaneous Blood Flow and Percutaneous Absorption: A Quantitative Analysis Using a Laser Doppler Velocimeter and a Blood Flow Meter." Journal of Investigative Dermatology 92, no. 3 (March 1989): 355–59. http://dx.doi.org/10.1111/1523-1747.ep12277181.

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Meyer, Fernando, Denise Sbrissia e. Silva, Giovana Marina Bombonatto, Juliana Navarro Lizana, Luiz Felipe Dziedricki, and Michele Lonardoni Krieger. "Histological analysis and the blood flux in kidneys submitted to different periods of ischemia/reperfusion." Acta Cirurgica Brasileira 26, no. 6 (December 2011): 451–55. http://dx.doi.org/10.1590/s0102-86502011000600008.

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PURPOSE: Evaluate the renal blood flow by using a laser flow meter, Laserflow Vasamedics®, after the ischemia/reperfusion in two different times of the arterial renal vessel clamping. METHODS: The renal blood flow was evaluated by using a laser flow meter after two different times of ischemia/reperfusion procedure, 30 and 60 minutes. It was used 20 Wistar male rats, divided in two groups of 10 rats: Group A (30 minutes of ischemia on the left kidney, with later analysis of the blood flow in 1, 5 and 20, after the renal reperfusion start) and Group B (60 minutes of ischemia on the left kidney, with later analysis of the blood flow in 1, 5 and 20 minutes, after the renal reperfusion start). RESULTS: In the first minute, there were not significant differences between the two groups (p=0.789). In the 5th minute there were not significant differences also, but there was a tendency (p=0.068). In the 20th minute, there was a significant difference between the 2 groups (p=0.022). When the means are observed, it is possible to notice that Group A has a larger flux than Group B. CONCLUSION: The kidneys submitted to 30' of ischemia/reperfusion are subject to a larger restitution of the blood flow in comparison to the Group which had a longer time.

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Nishihara, K., W. Iwasaki, M. Nakamura, E. Higurashi, T. Soh, T. Itoh, H. Okada, R. Maeda, and R. Sawada. "Development of a Wireless Sensor for the Measurement of Chicken Blood Flow Using the Laser Doppler Blood Flow Meter Technique." IEEE Transactions on Biomedical Engineering 60, no. 6 (June 2013): 1645–53. http://dx.doi.org/10.1109/tbme.2013.2241062.

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UMEDA, Yuji. "Measurement of blood flow of the peripheral nerve using a laser doppler flow meter-A canine experiment." Juntendo Medical Journal 43, no. 4 (1998): 576–85. http://dx.doi.org/10.14789/pjmj.43.576.

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Kijsamanmith, Kanittha, Noppakun Vongsavan, and Bruce Matthews. "Pulpal blood flow recorded from exposed dentine with a laser Doppler flow meter using red or infrared light." Archives of Oral Biology 87 (March 2018): 163–67. http://dx.doi.org/10.1016/j.archoralbio.2017.12.009.

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Дисертації з теми "Laser blood flow meter"

FOLGOSI, CORREA MELISSA S. "Caracterização das flutuações do sinal doppler do fluxo microvascular." reponame:Repositório Institucional do IPEN, 2011. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10032.

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Made available in DSpace on 2014-10-09T12:34:00Z (GMT). No. of bitstreams: 0
Made available in DSpace on 2014-10-09T14:01:05Z (GMT). No. of bitstreams: 0
Tese (Doutoramento)
IPEN/D
Instituto de Pesquisas Energéticas e Nucleares - IPEN-CNEN/SP

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Чорний, Владислав Олександрович. "Лазерний вимірювач швидкості кровотоку". Bachelor's thesis, КПІ ім. Ігоря Сікорського, 2021. https://ela.kpi.ua/handle/123456789/43661.

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Обсяг звіту становить 56 сторінок, міститься 25 ілюстрацій, 17 таблиці. Загалом опрацьовано 22 джерел. Актуальність: контроль та швидка оцінка характеристик параметрів кровотоку є важливим атрибутом правильної діагностики пацієнта, а в особливості неівазивним методом вимірювання, так як сприйняття організму чужорідного тіла може вести до неприємних наслідків. Мета: недорогий та надійний лазерний вимірювач швидкості кровотока, як для лабораторних дослідів, так і для повсякденного контролю пацієнта. Завдання: 1. Огляд та аналіз літератури, що стосується лазерних вимірювачів швидкості кровотоку. 2. Огляд та аналіз інтелектуальної власності сучасних лазерних вимірювачів швидкості кровотоку. 3. Побудова оптично-функціональної схеми приладу. 4. Підбір елементів для реалізації швидкоміра. 5. Моделювання лазерного вимірювача кровотоку.
The volume of the report is 56 pages, contains 25 illustrations, 17 tables. In general, 22 sources were processed. Relevance: control and rapid assessment of the characteristics of blood flow parameters is an important attribute of proper diagnosis of the patient, and in particular a non-invasive method of measurement, as the perception of a foreign body can lead to unpleasant consequences. Purpose: inexpensive and reliable laser blood flow meter, both for laboratory experiments and for daily monitoring of the patient. Task: 1. Review and analysis of the literature related to laser blood flow meters. 2. Review and analysis of intellectual property of modern laser blood flow meters. 3. Construction of the optical-functional scheme of the device. 4. Selection of elements to the optical-functional scheme of the flowmeter. 5. Simulation of a laser blood flow meter.

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Diwei, He M. Res. "Full field laser doppler blood flow sensor." Thesis, University of Nottingham, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.523084.

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Kongsavatsak, Chayut. "Full field laser doppler blood flow camera." Thesis, University of Nottingham, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.489689.

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Laser Doppler Blood Flowmetry is a non-invasive technique that has been I developed and used for measuring microvascular blood flow in tissue. The technique utilises the backscattering of the laser light from moving red blood cells and static tissue in order to extract information such as the concentration and flow. This thesis describes the early stages of the development of an integrated optical sensor array to perform full field laser Doppler blood flow imaging. This technique will eliminate the need for mechanical scanning and the data bottleneck that exists between the photodiode array and processing unit, so allowing the direct measurement ofblood flow maps to be obtained in real time. A single channel laser Doppler blood flowmetry device has been implemented using a photodetector linked to a field programmable gate array. Filters (low pass, band pass and frequency weighted) have been developed for processing the Doppler signals to obtain flow and concentration measurements. The responses of these filters are demonstrated using measurements from modulated light signals, a rotating diffusing disc and in vivo measurements of blood flow. Several types of a linear array system and current to voltage converter are considered for the first fabrication run of the project based on the cost of fabrication and performance of the system such as operating frequency, gain, bandwidth and signal to noise ratio. A 16x1 linear array of photodiodes is developed and integrated on the same chip with the laser Doppler processing design, successfully implemented in the single channel laser Doppler system, using the standard 0.35Jlm CMOS technology. The characterisation of each individual part of the design was carried out and compared with the Cadence simulation results. The performance of the system on a single pixel is also evaluated using a modulated laser as a light source. The knowledge gained from the characterisation and the overall performance of the linear array system is then used to develop a full field laser Doppler blood flow camera.

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Sun, Shen. "Laser Doppler imaging and laser speckle contrast imaging for blood flow measurement." Thesis, University of Nottingham, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.604304.

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The two blood flow imaging techniques, laser Doppler blood flow imaging (LDI) and laser speckle contrast blood flow imaging (LSCI), are well established and broadly applied in medical research. They are similar as both detect and process a fluctuating interference (speckle) pattem. However, the difference between processing algorithms provides different imaging characteristics. LDI can provide accurate, quantitative blood flow measurement which is seldom achieved by LSCI. Nevertheless, the fast imaging speed and simple instrumental setup provided by LSCI overcome some of the limitations ofLDI. With the development of high frame rate cameras full field LDI is now feasible and with the development of new processing algorithms LSCI is now providing more accurate quantitative information. It is therefore important to compare the performance of these two techniques. A full-field LDI system based on an FPGA (Field Programmable Gate Array) coupled with a high-speed CMOS (Complementary Metal-Oxide-Semiconductor) camera chip has been developed which provides blood flow images with flexible frame rates and spatial resolution. When a high spatial resolution is required, 1280xl024-pixel blood flow images were obtained by processing up to 2048 samples at O.2fps (frame per second). Altematively, a maximum of 15.5fps was achieved by reducing the resolution and sampling points to 256x256 pixels and 128 samples respectively. As a generic full-field LDI system, several parts of the system (memory unit, processing unit) can be simply updated or transplanted to another platform. The resource usage is optimized by utilizing a mixture of fixed and floating-pointing implementations, and the imaging speed is maximised because of the design of streamline structure which enables continuous input of data. Images were obtained of rotating diffusers at different rotation velocities and the system provides a linear relationship with velocity. Human blood flow images are also demonstrated both of the finger and of a healing wound. The author-designed LDI system was then applied to a high-spatial resolution flow imaging application in which the mixture of water and polystyrene micro spheres was pumped through a micropipette (diameter = 250llm) with controlled velocities, and the resulting flow was imaged and processed. The accurate, high-spatial resolution flow measurement was demonstrated by the resulting flow images which are of size 1280x 1 024 pixels and obtained by processing 2048 samples at each pixel. Besides the LDI system, a novel LSCI system has been developed on the same platform, establishing a unique LDI and LSCI hybrid system. By developing the LSCI method with equivalent exposures, the LDI data can be analysed using LSCl processing, enabling a truly fair comparison of these two methodologies. For comparison, measurements were carried out on a rotating diffuser that simulates the human tissue with controlled parameters. Although LDI and LSCI are qualitatively similar, the lack of quantitative blood flow measurement ofLSCI was recognized from the comparison since LSCI is exposure time dependent and unable to linearly detect the velocity changes. 11 To improve the linearity and accuracy ofLSCI measurement, multi-exposure laser speckle contrast imaging (MLSCI) has been introduced. However this increases image acquisition time as consecutive images at different exposure times need to be acquired. On the basis of the novel LSCI method, a new MLSCI scheme has been invented. The advantage of the MLSCI is that each frame is exposed with a fixed duration and various exposure times are alternatively achieved by accumulating several successive frames. In this way, the requirement to obtain a wide range of exposure times from consecutive images is overcome. This reduces image acquisition time as it depends on the longest exposure time rather than the sum of all exposures. From measurements of a rotating diffuser, the MLSCI was demonstrated to be capable of quantitatively measuring flow changes as in LDI. III

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Nguyen, Hoang Cuong. "High speed processing for laser doppler blood flow imaging." Thesis, University of Nottingham, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.517694.

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Godden, David J. "Measurement of airway blood flow by laser Doppler flowmetry." Thesis, University of Edinburgh, 1991. http://hdl.handle.net/1842/23933.

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Laser Doppler flowmetry (LDF) is a non-invasive method of measuring microcirculatory blood flow based on quantifying the Doppler frequency shift imparted to laser light by moving red blood cells. The object of this study was to examine whether a laser Doppler flow probe could be used to measure airway wall blood flow during bronchoscopy. Studies were performed in dogs, sheep and humans. Artifactual LDF flow signals were identified due to inadequate contact between the probe head and the mucosa, ventilatory and cardiac movement, and ambient light interference. Measurement technique was modified to minimise these artifacts. Site-to-site variation in LDF flow signals under baseline conditions was observed in all species (mean coefficient of variation = 36%), and, in humans, variation was similar in awake subjects during breath-holding, and in anaesthetised subjects during cardiopulmonary bypass, in whom ventilatory and cardiac artifacts are absent. When the probe was held at a single site, linear flow-pressure relationships (r = 0.63 - 0.9, p< 0.001) were observed in the trachea in 7 dogs during acute changes in mean systemic blood pressure and airway pressure. In 4 sheep, average LDF flow signals within regions of the bronchi varied in a linear fashion with changes in blood flow through a cannulated bronchial artery perfused by a roller pump. However, site-to-site variation in response occurred, and a substantial signal persisted when bronchial arterial flow was stopped, or when the artery was perfused by a cell-free solution of dextran which would, in theory, be expected to produce no LDF signal. These results may be explained in part by collateral blood flow, but also indicate detection of 'noise'. In 5 dogs, blood flow was measured in 6 regions of the trachea by both LDF and by the radiolabelled microsphere reference flow technique during resting ventilation (baseline), application of 15 cm H₂O positive end-expiratory pressure (PEEP) and during hyperventilation of dry air (HV). When regional measurements were examined, weak, but significant, correlations were observed between LDF and reference flow measurements during each condition. However, during PEEP, although both techniques indicated a similar mean reduction in blood flow (63%) from baseline, there was no correlation between the techniques in the magnitude of reduction measured in individual regions. During HV, LDF measurements showed variable responses between regions, and the mean change from baseline was not significantly different from zero. In contrast, reference flow values increased in most regions, and the mean increase was 87% from baseline. Sectioning of the tracheal wall indicated that this increase was localised to the mucosal layer. The results indicate that acute changes in blood flow at single sites in the airway may be detected by LDF applied in the present fashion. However, detection of 'noise' and site-to-site variation in LDF signals preclude quantitative measurements of airway wall blood flow using this probe design, particularly when the probe is moved between sites during an intervention.

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Shymkiw, Roxane Chia-Chi. "Measurement of blood flow in bone by laser Doppler imaging." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0021/MQ55267.pdf.

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Himsworth, John M. "Linear array CMOS detectors for laser Doppler blood flow imaging." Thesis, University of Nottingham, 2011. http://eprints.nottingham.ac.uk/12392/.

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Laser Doppler blood flow imaging is well established as a tool for clinical research. The technique has considerable potential as an aid to diagnosis and as a treatment aid in a number of situations. However, to make widespread clinical use of a blood flow imager feasible a number of refinements are required to make the device easy to use, accurate and safe. Existing LDBF systems consist of 2D imaging systems, and single point scanning systems. 2D imaging systems can offer fast image acquisition time, and hence high frame rate. However, these require high laser power to illuminate the entire target area with sufficient power. Single point scanning systems allow lower laser power to be used, but building up an image of flow in skin requires mechanical scanning of the laser, which results in a high image acquisition time, making the system awkward to use. A new approach developed here involves scanning a line along a target, and imaging the line with a 1D sensor array. This means that only one axis of mechanical scanning is required, reducing the scanning speed, and the laser power is vastly reduced from that required for a 2D system. This approach lends itself well to the use of integrated CMOS detectors, as the smaller pixel number means that a linear sensor array can be implemented on an IC which has integrated processing while keeping overall IC size, and hence cost, lower than equivalent 2D imaging systems. A number of front-end and processing circuits are investigated in terms of their suitability for this application. This is done by simulating a range of possible designs, including several logarithmic pixels, active pixel sensors and opamp-based linear front-ends. Where possible previously fabricated ICs using similar sensors were tested in a laser Doppler flowmetry system to verify simulation results. A first prototype IC (known as BVIPS1) implements a 64x1 array of buffered logarithmic pixels, chosen for their combination of sufficient gain and bandwidth and compact size. The IC makes use of the space available to include two front-end circuits per pixel, allowing other circuits to be prototyped. This allows a linear front-end based on opamps to be tested. It is found that both designs can detect changes in blood flow despite significant discrepancies between simulated and measured IC performance. However, the signal-noise ratio for flux readings is high, and the logarithmic pixel array suffers from high fixed pattern noise, and noise and distortion that makes vein location impossible. A second prototype IC (BVIPS2) consists of dual 64x1 arrays, and integrated processing. The sensor arrays are a logarithmic array, which addresses the problems of the first IC and uses alternative, individually selectable front-ends for each pixel to reduce fixed-pattern noise, and an array of opamp-based linear detectors. Simulation and initial testing is performed to show that this design operates as intended, and partially overcomes the problems found on the previous IC - the IC shows reduced fixed pattern noise and better spatial detection of blood flow changes, although there is still significant noise.

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Ghouth, Nahar Nizar A. "The assessment of pulpal blood flow using laser Doppler flowmetry." Thesis, University of Leeds, 2019. http://etheses.whiterose.ac.uk/22641/.

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Aims: The overall aim of this work was to study the use of Laser Doppler flowmetry for the assessment of the dental pulp in permanent teeth. The thesis is presented as four distinct studies; 1) A systematic review was carried out to assess the published evidence on the use of laser Doppler flowmetry in the assessment of the pulp status of permanent teeth, 2) A cross-sectional survey was carried out in order to understand the use of dental pulp tests by paediatric dentists and general dental practitioners in children with dental trauma in the United Kingdom, 3) The first clinical study aimed to assess whether laser Doppler flowmetry was more accurate than the conventional pulp sensibility tests (Electric pulp test and ethyl chloride) in assessing the pulp status of permanent anterior teeth in children, and 4) The second clinical study aimed to prospectively monitor pulp sensibility/vitality of traumatised teeth using laser Doppler flowmetry, electric pulp testing and ethyl chloride, and to prospectively investigate the accuracy of each test. Methods: Systematic review: A systematic literature search, using MEDLINE, EMBASE, Cochrane Central Register of Controlled Trials, www.clinicaltrials.gov and www.controlled-trials.com, in addition to citation and manual reference list searches, was conducted up to 15th January 2018. A risk of bias assessment was performed using the quality assessment for diagnostic accuracy studies tool (QUADAS-2) with all steps performed independently by two reviewers. Survey: A cross-sectional study utilising an 18-item questionnaire that was developed using the Bristol Online Survey (BOS) tool and circulated electronically to the members of the British Society of Paediatric Dentistry between June and August 2017. Clinical study 1: A cross-sectional cohort diagnostic accuracy study with randomisation was carried out in 8-16-year-old children. Participants had one maxillary central or lateral incisor with either a completed root canal treatment or pulp extirpation and a contra-lateral tooth with vital pulp. The outcome measures included the cut-off threshold for LDF and the sensitivity, specificity and predictive values as well as the repeatability of each test. The Receiver Operating Characteristic (ROC) curve and the contingency 2X2 table were used for analysis. Kappa scores were used to assess the repeatability of EPT and ethyl chloride while inter-class correlation was used for LDF. Clinical study 2: Children who sustained dental trauma to an anterior permanent tooth with uncertain pulp vitality requiring monitoring for a minimum of 12 months were included in the study. Recordings of dental pulp tests were carried out at baseline and at the end of the follow-up period. Results Systematic review: Only four studies all with a high risk of bias were included in the final systematic review for analysis. Laser Doppler flowmetry was reported to be more accurate in differentiating between teeth with normal pulps and pulp necrosis with a sensitivity of (81.8-100%) and specificity of 100 % in comparison to other vitality tests such as pulp oximetry (sensitivity = 81.3 %, specificity = 94.9 % ) and sensibility tests such as electric pulp testing (EPT) (sensitivity = 63.3 - 91.5 %, specificity = 88 - 100 %). Survey: One hundred and forty-one respondents, both, paediatric dental specialists (56%) and GDPs (44%) were included in the analysis. Almost all specialists (93.7%) reported using sensibility tests routinely in comparison to 80.6% of GDPs. Child perception and cooperation were the most commonly reported barriers. GDPs mainly used cold testing, while specialists used cold and electric pulp tests equally. Inconsistencies in recording as well as documentation the results varied among respondents. Only a few specialists reported having some experience in using laser Doppler flowmetry. Clinical study 1: There was a significant difference between the Flux values for teeth with vital and non-vital pulps. The best cut-off ratio for LDF was 0.6 yielding a sensitivity of 54 % and a specificity of 32 % which were lower than the values of electric pulp test (Sensitivity = 83.8 - 94.6 %, Specificity = 89.2 - 97.6 %) and ethyl chloride (Sensitivity = 81.1 - 91.9 %, Specificity = 73 - 81.1 %). The repeatability of LDF, EPT and ethyl chloride were 0.85, 0.86 and 0.81, respectively. Clinical study 2: The study included a convenience sample size of 15 participants with a mean age of 10.7 years (SD=1.66), age range 8-14 years. The mean follow-up period was 7.29 months (SD 1.9) with a range of 6-12 months. All traumatised teeth remained vital at the end of follow-up except one tooth. The specificity of LDF at baseline was 80% compared to 66.6% and 60-73.3% for EPT and ethyl chloride, respectively. At the end of the follow-up period, LDF showed lower specificity (71.4 %) than EPT (78.5 - 85.7 %) and ethyl chloride (71.4 - 78.5 %). Conclusion: Despite the high reported sensitivity and specificity of laser Doppler flowmetry in the systematic review, these data were found to be based on studies with a high level of bias and serious shortfalls in study designs. The survey of specialists and GDP's showed that the use of pulp sensibility tests was relatively high amongst respondents while those of vitality tests were very low. Barriers and inconsistencies in the technique and recording of the results of sensibility tests were evident. The frequency and timing of using sensibility tests in line with international guidelines were stressed. The use of standardised techniques involving methods considered to improve reliability was highlighted. The results of the clinical studies showed that there was a high probability of false results when using LDF in assessing the pulp blood flow/pulp vitality. LDF was unable to differentiate between teeth with vital and non-vital pulps in children between the ages of 8-16 years with an acceptable level of confidence in the first clinical study. Within the limitations of the second clinical study, LDF showed better specificity than both EPT and ethyl chloride in predicting the outcome of the pulp at baseline but less at the end of follow-up. Due to the small sample size and relatively short follow-up period, the results of the second clinical study have been interpreted with caution. Therefore, the published data on the accuracy of LDF can not be accepted as they are based on studies with unacceptable flaws in study design. Our studies have shown that not only the use of LDF or even the experience of clinicians with its use is extremely low, but also its specificity and sensitivity were of a level which is unacceptable for recommending its meaningful clinical use.

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Книги з теми "Laser blood flow meter"

Fratkin, Randi D. Evaluation of a laser Doppler flowmeter to assess blood flow in primary anterior teeth. Ottawa: National Library of Canada, 1993.

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Cobb, Jonathan Edwin. An In-shoe laser Doppler sensor for assessing plantar blood flow in the diabetic foot. Poole: Bournemouth University, 2000.

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Ward, Geoffrey. Laser Doppler Flowmetry: Theoretical and in vitro models with red and green lasers. Oxford: Oxford Brookes University, 1995.

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ASME/JSME Fluids Engineering and Laser Anemometry Conference and Exhibition (1995 Hilton Head, S.C.). Bio-medical fluids engineering: Presented at the 1995 ASME/JSME Fluids Engineering and Laser Anemometry Conference and Exhibition, August 13-18, 1995, Hilton Head, South Carolina. New York, N.Y: American Society of Mechanical Engineers, 1995.

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Clements, B. Alyson. Low intensity laser therapy (LILT) and combined phototherapy/LILT: Effects upon blood flow and wound healing in humans. [s.l: The Author], 1997.

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P, Shepherd A., and Öberg P. Åke, eds. Laser-Doppler blood flowmetry. Boston: Kluwer Academic Publishers, 1990.

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Diagnostic Ultrasound And Blood Flow Measurements. Crc Pr I Llc, 2004.

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Shung, K. Kirk. Diagnostic Ultrasound: Imaging and Blood Flow Measurements. CRC, 2005.

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Shung, K. Kirk. Diagnostic Ultrasound: Imaging and Blood Flow Measurements, Second Edition. Taylor & Francis Group, 2015.

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Shung, K. Kirk. Diagnostic Ultrasound: Imaging and Blood Flow Measurements, Second Edition. CRC Press, 2017.

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Частини книг з теми "Laser blood flow meter"

Kiel, J. W., and A. P. Shepherd. "Gastrointestinal Blood Flow." In Laser-Doppler Blood Flowmetry, 227–50. Boston, MA: Springer US, 1990. http://dx.doi.org/10.1007/978-1-4757-2083-9_13.

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Roman, Richard J. "Renal Blood Flow." In Laser-Doppler Blood Flowmetry, 289–304. Boston, MA: Springer US, 1990. http://dx.doi.org/10.1007/978-1-4757-2083-9_16.

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Miller, Josef M., and Alfred L. Nuttall. "Cochlear Blood Flow." In Laser-Doppler Blood Flowmetry, 319–47. Boston, MA: Springer US, 1990. http://dx.doi.org/10.1007/978-1-4757-2083-9_18.

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Riva, Charles E., Benno L. Petrig, and Juan E. Grunwald. "Retinal Blood Flow." In Laser-Doppler Blood Flowmetry, 349–83. Boston, MA: Springer US, 1990. http://dx.doi.org/10.1007/978-1-4757-2083-9_19.

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Kiel, Jeffrey W., and Herbert A. Reitsamer. "Laser Doppler Flowmetry in Animals." In Ocular Blood Flow, 49–63. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-540-69469-4_3.

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Hellem, Sölve, and E. Göran Salerud. "Blood Flow in Bone." In Laser-Doppler Blood Flowmetry, 305–17. Boston, MA: Springer US, 1990. http://dx.doi.org/10.1007/978-1-4757-2083-9_17.

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Tyml, Karel, Richard J. Roman, and Julian H. Lombard. "Blood Flow in Skeletal Muscle." In Laser-Doppler Blood Flowmetry, 215–26. Boston, MA: Springer US, 1990. http://dx.doi.org/10.1007/978-1-4757-2083-9_12.

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Riva, Charles E. "Laser Doppler Techniques for Ocular Blood Velocity and Flow." In Ocular Blood Flow, 123–46. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-540-69469-4_7.

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Wadhwani, Kishena C., and Stanley I. Rapoport. "Blood Flow in the Central and Peripheral Nervous Systems." In Laser-Doppler Blood Flowmetry, 265–88. Boston, MA: Springer US, 1990. http://dx.doi.org/10.1007/978-1-4757-2083-9_15.

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Haberl, R. L., M. Boerschel, U. Dirnagl, A. Piepgras, P. Schmiedek, and K. M. Einhäupl. "Continuous Measurement of Acetazolamide-Stimulated Cerebral Blood Flow by Laser Doppler Flowmetry." In Stimulated Cerebral Blood Flow, 66–70. Berlin, Heidelberg: Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-642-77102-6_8.

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Тези доповідей конференцій з теми "Laser blood flow meter"

Adil, Hasina, Alok Gupta, Pratima Sen, and Pranay K. Sen. "Indigenous Development Of Laser Blood Flow Meter." In International Conference on Fibre Optics and Photonics. Washington, D.C.: OSA, 2012. http://dx.doi.org/10.1364/photonics.2012.mpo.9.

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Scalise, Lorenzo, Frits F. M. de Mul, Wiendelt Steenbergen, and Anna L. Petoukhova. "Recent advances in self-mixing laser-Doppler velocimetry: use as an in-vivo blood flow meter." In BiOS 2000 The International Symposium on Biomedical Optics, edited by Tuan Vo-Dinh, Warren S. Grundfest, and David A. Benaron. SPIE, 2000. http://dx.doi.org/10.1117/12.384890.

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Tang, Sai Chun, David Vilkomerson, and Tom Chilipka. "Magnetically-powered implantable Doppler blood flow meter." In 2014 IEEE International Ultrasonics Symposium (IUS). IEEE, 2014. http://dx.doi.org/10.1109/ultsym.2014.0402.

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Bordoloi, Kiron C., and Kim Clark. "In-vivo fiber optic cardiac blood-flow meter." In Education in Optics. SPIE, 1992. http://dx.doi.org/10.1117/12.57881.

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Liu, Ying, Xiqin Zhang, Xiaoyou Shan, Shining Ma, Mingjuan Zhu, Xiuying Wang, and Qi Huang. "Clinical studies of the biospeckle blood flow meter." In Photonics China '96, edited by Brij M. Khorana, Junheng Li, and Michail M. Pankratov. SPIE, 1996. http://dx.doi.org/10.1117/12.251947.

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Dantas, Ricardo G., Eduardo T. Costa, Joaquim M. Maia, and Vera L. d. S. Nantes Button. "Ultrasonic Doppler blood flow meter for extracorporeal circulation." In Medical Imaging 2000, edited by Chin-Tu Chen and Anne V. Clough. SPIE, 2000. http://dx.doi.org/10.1117/12.383426.

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Kosaka, Ryo, Kyohei Fukuda, Masahiro Nishida, Osamu Maruyama, and Takashi Yamane. "Noninvasive blood-flow meter using a curved cannula with zero compensation for an axial flow blood pump." In 2013 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC). IEEE, 2013. http://dx.doi.org/10.1109/embc.2013.6610444.

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Wardell, Karin, Maria Linden, and Gert E. Nilsson. "Tissue blood flow mapping using laser technology." In Photonics West '95, edited by Halina Podbielska. SPIE, 1995. http://dx.doi.org/10.1117/12.206002.

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Liepsch, Dieter W., Axel Poll, and Gottlieb Pflugbeil. "In-vitro laser anemometry blood flow systems." In Laser Anemometry: Advances and Applications--Fifth International Conference, edited by J. M. Bessem, R. Booij, H. W. H. E. Godefroy, P. J. de Groot, K. K. Prasad, F. F. M. de Mul, and E. J. Nijhof. SPIE, 1993. http://dx.doi.org/10.1117/12.150500.

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Einav, Shmuel. "In-vivo laser anemometry blood flow systems." In Laser Anemometry: Advances and Applications--Fifth International Conference, edited by J. M. Bessem, R. Booij, H. W. H. E. Godefroy, P. J. de Groot, K. K. Prasad, F. F. M. de Mul, and E. J. Nijhof. SPIE, 1993. http://dx.doi.org/10.1117/12.150509.

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