Dr. Mohammad Ali Ansari Profile

Dr. Mohammad Ali Ansari

at Shahid Behesti Univ

SPIE Involvement:

Author

Publications (16)

Proceedings Article | 29 April 2022 Paper

Stimulation of heart pacemakers cells using pulsed infrared radiation

M. Ansari, H. Tajarenejad, S. Akbari, M. Zakeri, S. Hamidi

Proceedings Volume 12192, 1219205 (2022) https://doi.org/10.1117/12.2623909

KEYWORDS: Heart, Infrared radiation, Radiation effects, Temperature metrology, Photothermal effect, Tissues, Pulsed laser operation, Ions, Infrared lasers, Calcium

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Proceedings Article | 5 March 2021 Poster

Wavelength optimization for quantification of hypoxia in photoacoustic imaging

Sadreddin Mahmoodkalayeh, Rayyan Manwar, Karl Kratkiewicz, Meysam Shahbazi, Mohammad Ansari, Girija Natarajan, Eishi Asano, Kamran Avanaki

Proceedings Volume 11642, 116424O (2021) https://doi.org/10.1117/12.2581249

KEYWORDS: Hypoxia, Photoacoustic imaging, Photoacoustic spectroscopy, Neuroimaging, Brain, Tissues, Spectroscopy, Oxygen, Optical properties, Neurological disorders

Proceedings Article | 5 March 2021 Poster

A simulation study on co-planar mutually guided photoacoustic and diffuse optical tomography

Sadreddin Mahmoodkalayeh, Mehrdad Zarei, Mohammad Ali Ansari, Karl Kratkiewicz, Mohsen Ranjbaran, Rayyan Manwar, Kamran Avanaki

Proceedings Volume 11642, 116423X (2021) https://doi.org/10.1117/12.2581235

KEYWORDS: Acquisition tracking and pointing, Photoacoustic spectroscopy, Diffuse optical tomography, Tissues, Tissue optics, Absorption, Functional imaging, Scattering, Photoacoustic tomography, Optical testing

Proceedings Article | 9 April 2020 Paper

Simulating the effects of blood vessel depth on photoacoustic signal generation using 3D Monte Carlo method

Mohammad Ali Ansari, Amirmohammad Hassanzadeh, Zahra Akbari

Proceedings Volume 11457, 114571O (2020) https://doi.org/10.1117/12.2561988

KEYWORDS: Blood vessels, Monte Carlo methods, Skin, Photoacoustic spectroscopy, Tissues, Tissue optics, Spatial resolution, Acoustics, Laser tissue interaction, Photoacoustic imaging

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Proceedings Article | 9 April 2020 Paper

Low-cost measurement of the dermal beta-carotene in the context of optical clearing

M. Ansari, A. Morovati, V. Tuchin

Proceedings Volume 11457, 1145704 (2020) https://doi.org/10.1117/12.2563961

KEYWORDS: Absorption, Reflectance spectroscopy, Skin, Absorbance, Spectroscopy, Optical clearing, Blood, Chromophores, Raman spectroscopy, Light emitting diodes

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Proceedings Article | 9 April 2020 Paper

Flexible neuro-plasmonic sensor based on patterned two dimensional structure to detect methadone

Tannaz Asadishad, Foozieh Sohrabi, Seyedeh Mehri Hamidi, Mohammad Ali Ansari, Shirin Farivar, Maryam Karimi

Proceedings Volume 11457, 114570X (2020) https://doi.org/10.1117/12.2560180

KEYWORDS: Stem cells, Plasmonics, Sensors, Ellipsometry, Surface plasmons, Ocean optics, Diffraction gratings

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SPIE Journal Paper | 5 March 2020

Infrared neurostimulation of earthworm: from modeling to experiment

Mohammad Ali Ansari, Valery Tuchin

OE, Vol. 59, Issue 06, 061627, (March 2020) https://doi.org/10.1117/12.10.1117/1.OE.59.6.061627

KEYWORDS: Action potentials, Capacitance, Thermal modeling, Infrared radiation, Temperature metrology, Pulsed laser operation, Tissues, Modulation, Neurons, Laser energy

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Proceedings Article | 6 March 2019 Paper

Simultaneous photoacoustic tomography guided diffuse optical tomography: a numerical study

Mehrdad Zarei, Sadreddin Mahmoodkalayeh, Mohammad Ali Ansari, Karl Kratkiewicz, Rayyan Manwar, M. R. Nasiriavanaki

Proceedings Volume 10878, 108785U (2019) https://doi.org/10.1117/12.2510554

KEYWORDS: Signal detection, Absorption, Photoacoustic tomography, Optical fibers, Diffuse optical tomography, Transducers, Image restoration, Tissue optics, Tissues, Spatial resolution

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SPIE Journal Paper | 13 September 2018 Open Access

Combination of analytical and experimental optical clearing of rodent specimen for detecting beta-carotene: phantom study

Shadi Masoumi, Mohammad Ali Ansari, Ezeddin Mohajerani, Elina A. Genina, Valery V. Tuchin

JBO, Vol. 23, Issue 09, 095002, (September 2018) https://doi.org/10.1117/12.10.1117/1.JBO.23.9.095002

KEYWORDS: Absorption, Reflectance spectroscopy, Blood, Tissues, Chromophores, Optical clearing, Skin, Scattering, Biological research, Absorbance

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Proceedings Article | 26 April 2018 Paper

The estimation of hemodynamic signals measured by fNIRS response to cold pressor test

M. A. Ansari, E. Fazliazar

Proceedings Volume 10717, 1071720 (2018) https://doi.org/10.1117/12.2314704

KEYWORDS: Hemodynamics, Brain, Neurovascular coupling, Sensors, Signal to noise ratio, Dementia, Tolerancing, Tissues, Functional magnetic resonance imaging

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Proceedings Article | 26 April 2018 Paper

Microwave reflection, transmission, and absorption by human brain tissue

M. A. Ansari, N. Akhlaghipour, M. Zarei, A. R. Niknam

Proceedings Volume 10716, 107160T (2018) https://doi.org/10.1117/12.2314449

KEYWORDS: Brain, Microwave radiation, Absorption, Monte Carlo methods, Tissues, Dielectrics, Skull, Tissue optics, Biomedical optics, Radio propagation

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Proceedings Article | 26 February 2018 Paper

Optimization of light illumination for photoacoustic computed tomography of human infant brain

Sadreddin Mahmoodkalayeh, Xun Lu, Mohammad Ali Ansari, Hengguang Li, Mohammadreza Nasiriavanaki

Proceedings Volume 10494, 104946U (2018) https://doi.org/10.1117/12.2291592

KEYWORDS: Optical fibers, Monte Carlo methods, Absorption, Tissues, Head, Brain, Photoacoustic tomography, Photoacoustic imaging, Ultrasonography, Light sources

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Proceedings Article | 26 February 2018 Paper

A new illumination scheme for photoacoustic computed tomography

Sadreddin Mahmoodkalayeh, Mohammad Ali Ansari, Mohammadreza Nasiriavanaki

Proceedings Volume 10494, 104946T (2018) https://doi.org/10.1117/12.2291589

KEYWORDS: Optical fibers, Photoacoustic spectroscopy, Photoacoustic tomography, Photoacoustic imaging, Monte Carlo methods, Tissue optics, Lead, Collimation, Breast, Absorption

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Proceedings Article | 22 February 2018 Paper

Hybrid co-planar diffuse optical tomography and photoacoustic imaging

M. Zarei, S. Mahmoodkalayeh, M. A. Ansari, M. R. Nasiriavanaki

Proceedings Volume 10494, 104946V (2018) https://doi.org/10.1117/12.2291678

KEYWORDS: Absorption, Acquisition tracking and pointing, Image restoration, Transducers, Diffuse optical tomography, Optical fibers, Tissue optics, Photoacoustic tomography, Tissues, Scattering

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SPIE Journal Paper | 11 July 2017 Open Access

Development of low-cost photoacoustic imaging systems using very low-energy pulsed laser diodes

Ali Hariri, Afreen Fatima, Nafiseh Mohammadian, Sadreddin Mahmoodkalayeh, Mohammad Ali Ansari, Nicholas Bely, Mohammad R. N. Avanaki

JBO, Vol. 22, Issue 07, 075001, (July 2017) https://doi.org/10.1117/12.10.1117/1.JBO.22.7.075001

KEYWORDS: Semiconductor lasers, Photoacoustic imaging, Imaging systems, Photoacoustic spectroscopy, Microscopy, Computed tomography, Computing systems, Laser tissue interaction

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SPIE Journal Paper | 1 November 2010 Open Access

Boundary integral method for simulating laser short-pulse penetration into biological tissues

Mohammad Ali Ansari, Reza Massudi

JBO, Vol. 15, Issue 06, 065009, (November 2010) https://doi.org/10.1117/12.10.1117/1.3526351

KEYWORDS: Tissues, Photons, Finite-difference time-domain method, Scattering, Absorption, Monte Carlo methods, Optical properties, Optical simulations, Natural surfaces, Picosecond phenomena

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