Dr. Nitesh Katta Profile

Dr. Nitesh Katta

at Beckman Laser Institute and Medical Clinic

SPIE Involvement:

Author | Career Lab Leader

Publications (18)

Proceedings Article | 13 March 2024 Poster

Early detection of cutaneous neurofibromas using spatial frequency domain imaging and optical coherence tomography

Junsoo Lee, Wangcun Jia, Gordon Kennedy, Nitesh Katta, Rafael Sierra, James Johnson, Kristen Kelly, Anthony Durkin, J. Stuart Nelson, Thomas Milner

Proceedings Volume PC12816, PC128160R (2024) https://doi.org/10.1117/12.3001848

KEYWORDS: Optical coherence tomography, Coherence imaging, Optical imaging, Skin, Scattering, Optical properties, Imaging systems, Eye, Tissue optics, Light sources and illumination

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Proceedings Article | 13 March 2024 Presentation

Image guidance for true lumen crossing of tortuous coronary arteries with calcified chronic total occlusions (CTOs)

Nitesh Katta, Aleksandra Gruslova, Scott Jenney, Drew Nolen, Jim Elliot, Marc Feldman, Thomas Milner

Proceedings Volume 12819, 128190B (2024) https://doi.org/10.1117/12.3001148

KEYWORDS: Arteries, Ice, Fluoroscopy, Echocardiography, X-rays, Visualization, In vivo imaging, Heart, Control systems, X-ray imaging

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Proceedings Article | 13 March 2024 Presentation + Paper

Contribution of cavitation and photothermal effects in laser lithotripsy

Nitesh Katta, Katherine Lydia Sikorski, Joel Teichman, Thomas Milner

Proceedings Volume 12817, 128170K (2024) https://doi.org/10.1117/12.2689938

KEYWORDS: Cavitation, Laser ablation, Photothermal effect, Pulsed laser operation, Optical coherence tomography, Laser lithotripsy

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Recent studies suggest that cavitation effect following laser induced vapor bubble collapse is more dominant than the photothermal effect in stone ablation during laser lithotripsy. Our research aims to introduce an experimental study design that precisely measures each effect's contribution using gypsum phantom stones. To isolate the cavitation-only mechanism after the collapse of the laser-induced vapor bubble, a phantom stone was submerged in a dye solution. The dye solution absorbed all laser light, generating cavitation, with additional experiments confirming the absence of any photothermal effect when the dye was not used. The fiber was positioned both parallel to the stone surface and perpendicular at a 1mm distance, exposing it solely to cavitation. In another set of experiments, a phantom stone was submerged in water and 2μm light from a thulium yttrium aluminum garnet (Tm:YAG) laser was delivered via the same optical fiber positioned (this time) perpendicular to the stone surface. In this case, both optical absorption and cavitation effect from laser-induced vapor bubble collapses were observed but the measured pressure transients showed significantly lower peak pressures compared to the first set. In a final set of experiments, these conditions remained constant, except the fiber was positioned parallel to the stone surface, once again exposing it to only the cavitation from the collapse of the laser induced vapor bubble. Craters created by all methods were imaged using an optical coherence tomography (OCT) system. Measured volumes showed that stone ablation was dominated by photo-thermal, and not by cavitation from the vapor bubble collapse. In fact, in two of the three trials of stone experiments (n=5, each trial) that were subjected to cavitation-only, there was no observable ablation. One trial produced an average volume that was 50% smaller than the average resulting from a single photo-thermal-only case (p = 0.0022 < 0.05). Our results suggest that finetuning of lithotripsy procedures with focus on energy transmission to the stone can provide optimal results.

Proceedings Article | 17 March 2023 Presentation

Blood flow modulation for laser treatment in human cutaneous skin by pneumatic control

Junsoo Lee, Nitesh Katta, Wangcun Jia, Scott Jenney, J. Stuart Nelson, Thomas Milner

Proceedings Volume PC12352, PC123520I (2023) https://doi.org/10.1117/12.2649629

KEYWORDS: Blood circulation, Skin, Laser therapeutics, Modulation, Control systems, Tissue optics, Glasses, Coherence (optics), Absorption

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Proceedings Article | 7 March 2023 Presentation

Effects of laser-induced shockwaves on light propagation in turbid media

Grant Swajian, Junsoo Lee, Nitesh Katta, Bahman Anvari, Thomas Milner

Proceedings Volume PC12377, PC1237702 (2023) https://doi.org/10.1117/12.2648002

KEYWORDS: Laser scattering, Light scattering, Scattering media, Scattering, Tissue optics, Light wave propagation, Tumors, Tissues, Skin, Photons

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SPIE Journal Paper | 28 February 2023 Open Access

Tissue harvest with a laser microbiopsy (Erratum)

Jason King, Nitesh Katta, Sapun Parekh, Thomas Milner, James Tunnell

JBO, Vol. 28, Issue 02, 029801, (February 2023) https://doi.org/10.1117/12.10.1117/1.JBO.28.2.029801

KEYWORDS: Tissues, Laser cutting, Plasma, Medical laser equipment, Laser ablation, Biomedical engineering

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SPIE Journal Paper | 14 December 2022 Open Access

Tissue harvest with a laser microbiopsy

Jason B. King, Nitesh Katta, Sapun H. Parekh, Thomas E. Milner, James W. Tunnell

JBO, Vol. 27, Issue 12, 125001, (December 2022) https://doi.org/10.1117/12.10.1117/1.JBO.27.12.125001

KEYWORDS: Tissues, Biopsy, Pulsed laser operation, Skin, Laser ablation, Natural surfaces, Beam diameter, Biological research, Kidney, Cryogenics

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Proceedings Article | 7 March 2022 Presentation + Paper

Laser microbiopsy with virtual H&E imaging for rapid minimally invasive diagnosis

Jason King, Nitesh Katta, Thomas Milner, James Tunnell

Proceedings Volume 11949, 1194905 (2022) https://doi.org/10.1117/12.2608931

KEYWORDS: Tissues, Laser tissue interaction, Adaptive optics, Reflectivity, Skin, Confocal microscopy, Natural surfaces, Biopsy, Glasses, Tissue optics

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Proceedings Article | 4 March 2022 Presentation + Paper

A novel laser cutting and cooling system for crossing coronary chronic total occlusions

Nitesh Katta, Aleksandra Gruslova, Scott Jenney, Arnold Estrada, Andrew Cabe, Drew Nolen, Marc Feldman, Thomas Milner

Proceedings Volume 11936, 1193604 (2022) https://doi.org/10.1117/12.2610088

KEYWORDS: Arteries, Optical coherence tomography, Laser cutting, In vivo imaging, Tissues, Coronary catheterization, Carbon dioxide

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Proceedings Article | 4 March 2022 Presentation + Paper

Laser induced shockwave for increasing arterial compliance in calcified arteries

Nitesh Katta, Aleksandra Gruslova, Scott Jenney, Drew Nolen, Emil Sobol, Mehmet Cilingiroglu, Marc Feldman, Thomas Milner

Proceedings Volume 11936, 1193603 (2022) https://doi.org/10.1117/12.2607276

KEYWORDS: Coronary catheterization, Arteries, Calcium, Optical fibers, Holmium, Laser therapeutics, Laser lithotripsy

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Proceedings Article | 2 March 2022 Paper

Increased ablation efficiency in hard and soft tissues using an annular beam

Jason King, Nitesh Katta, Joel M. Teichman, James Tunnell, Thomas Milner

Proceedings Volume 11958, 119580E (2022) https://doi.org/10.1117/12.2608952

KEYWORDS: Tissues, Laser ablation, Beam shaping, Natural surfaces, Kidney, Laser therapeutics, Tissue optics, Soft tissue optics, Optical coherence tomography, Modulation

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Proceedings Article | 5 March 2021 Presentation + Paper

Optical monitoring the dynamics of plasmonic nanobubbles

Hieu T. Nguyen, Nitesh Katta, Thomas Milner, James Tunnell

Proceedings Volume 11661, 116610F (2021) https://doi.org/10.1117/12.2577896

KEYWORDS: Plasmonics, Optical coherence tomography, Interfaces, Laser therapeutics, Ultrafast measurement systems, Ultrafast imaging, Photography, Optical testing, Optical scanning systems, Nd:YAG lasers

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Proceedings Article | 5 March 2021 Presentation + Paper

Characterization of laser microbiopsy for sub-microliter tissue sampling

Jason King, Nitesh Katta, James Tunnell, Thomas Milner

Proceedings Volume 11631, 1163111 (2021) https://doi.org/10.1117/12.2577258

KEYWORDS: Laser tissue interaction, Tissues, Tissue optics, Ray tracing, Diagnostics, Beam shaping, Aspheric lenses, Zemax, Thermal modeling

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SPIE Journal Paper | 20 April 2018

Understanding and improving optical coherence tomography imaging depth in selective laser sintering nylon 12 parts and powder

Adam Lewis, Nitesh Katta, Austin McElroy, Thomas Milner, Scott Fish, Joseph Beaman

OE, Vol. 57, Issue 04, 041414, (April 2018) https://doi.org/10.1117/12.10.1117/1.OE.57.4.041414

KEYWORDS: Optical coherence tomography, Laser sintering, Particles, Imaging systems, Liquids, Coherence imaging, Crystals, Scattering, Mirrors, Pixel resolution

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Proceedings Article | 19 April 2017 Presentation

Optical coherence tomography (OCT) guided smart laser knife for cancer surgery (Conference Presentation)

Nitesh Katta, Austin Mcelroy, Arnold Estrada, Thomas Milner

Proceedings Volume 10054, 100540M (2017) https://doi.org/10.1117/12.2250699

KEYWORDS: Laser tissue interaction, Fiber lasers, Optical coherence tomography, Thulium, Cancer, Surgery, Laser cutting, Pulsed laser operation, Imaging systems, Laser therapeutics

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Proceedings Article | 3 March 2017 Presentation + Paper

Image-guided smart laser system for precision implantation of cells in cartilage

Nitesh Katta, John Rector, Michael Gardner, Austin McElroy, Kevin Choy, Cody Crosby, Janet Zoldan, Thomas Milner

Proceedings Volume 10135, 101350V (2017) https://doi.org/10.1117/12.2253812

KEYWORDS: Optical coherence tomography, Cartilage, Laser tissue interaction, Laser therapeutics, Thulium, Imaging systems, Laser cutting, Stem cells, Tissues

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Proceedings Article | 22 February 2017 Presentation + Paper

1940 nm all-fiber Q-switched fiber laser

P. Ahmadi, A. Estrada, N. Katta, E. Lim, A. McElroy, T. Milner, V. Mokan, M. Underwood

Proceedings Volume 10083, 100830G (2017) https://doi.org/10.1117/12.2252195

KEYWORDS: Fiber lasers, Laser tissue interaction, Surgery, Laser therapeutics, Laser vision correction, Laser cutting, Fiber amplifiers, Q switched fiber lasers, Q switching, Molybdenum, Thulium, Laser development, Q switched lasers, Modulation

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Proceedings Article | 17 February 2017 Presentation + Paper

Scattering angle resolved optical coherence tomography for in vivo murine retinal imaging

Michael Gardner, Nitesh Katta, Austin McElroy, Vikram Baruah, H. Rylander, Thomas Milner

Proceedings Volume 10053, 100531O (2017) https://doi.org/10.1117/12.2253367

KEYWORDS: Optical coherence tomography, Retinal scanning, Imaging systems, Scattering, Nervous system, Eye, Neuroimaging, Brain, Retina, Beam propagation method, In vivo imaging, Mirrors, Microelectromechanical systems

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Showing 5 of 18 publications

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