scholarly journals Trans-rectal ultrasound-coupled near-infrared optical tomography of the prostate, Part I: Simulation

2008 ◽  
Vol 16 (22) ◽  
pp. 17484 ◽  
Author(s):  
Guan Xu ◽  
Daqing Piao ◽  
Cameron H. Musgrove ◽  
Charles F. Bunting ◽  
Hamid Dehghani
Keyword(s):  
Near Infrared ◽  
Optical Tomography ◽  
Rectal Ultrasound

scholarly journals Trans-rectal ultrasound-coupled near-infrared optical tomography of the prostate, Part II: Experimental demonstration

2008 ◽  
Vol 16 (22) ◽  
pp. 17505 ◽  
Author(s):  
Zhen Jiang ◽  
Daqing Piao ◽  
Guan Xu ◽  
Jerry W. Ritchey ◽  
G. R. Holyoak ◽  
...  
Keyword(s):  
Near Infrared ◽  
Optical Tomography ◽  
Experimental Demonstration ◽  
Rectal Ultrasound

In vivo trans-rectal ultrasound coupled trans-rectal near-infrared optical tomography of canine prostate bearing transmissible venereal tumor

2009 ◽  
Author(s):  
Zhen Jiang ◽  
G. Reed Holyoak ◽  
Kenneth E. Bartels ◽  
Jerry W. Ritchey ◽  
Guan Xu ◽  
...  
Keyword(s):  
Near Infrared ◽  
Optical Tomography ◽  
Rectal Ultrasound

IN VIVO TRANS-RECTAL ULTRASOUND-COUPLED NEAR-INFRARED OPTICAL TOMOGRAPHY OF INTACT NORMAL CANINE PROSTATE

2009 ◽  
Vol 02 (03) ◽  
pp. 215-225 ◽  
Author(s):  
DAQING PIAO ◽  
ZHEN JIANG ◽  
KENNETH E. BARTELS ◽  
G. REED HOLYOAK ◽  
JERRY W. RITCHEY ◽  
...  
Keyword(s):  
Near Infrared ◽  
Prostate Gland ◽  
Optical Tomography ◽  
Left Lobe ◽  
Attenuation Coefficients ◽  
Scattering Coefficients ◽  
Rectal Ultrasound ◽  
State Measurement ◽  
The Right

This is the first tomography-presentation of the optical properties of a normal canine prostate, in vivo, in its native intact environment in the pelvic canal. The imaging was performed by trans-rectal near-infrared (NIR) optical tomography in steady-state measurement at 840 nm on three sagittal planes across the right lobe, middle-line, and left lobe, respectively, of the prostate gland. The NIR imaging planes were position-correlated with concurrently applied trans-rectal ultrasound, albeit there was no spatial prior employed in the NIR tomography reconstruction. The reconstructed peak absorption coefficients of the prostate on the three planes were 0.014, 0.012, and 0.014 mm-1. The peak reduced scattering coefficients were 5.28, 5.56, and 6.53 mm-1. The peak effective attenuation coefficients were 0.45, 0.43, and 0.50 mm-1. The absorption and effective attenuation coefficients were within the ranges predictable at 840 nm by literature values which clustered sparsely from 355 nm to 1064 nm, none of which were performed on a canine prostate with similar conditions. The effective attenuation coefficients of the gland were shown to be generally higher in the internal aspects than in the peripheral aspects, which is consistent with the previous findings that the urethral regions were statistically more attenuating than the capsular regions.

Video-rate near-infrared optical tomography using spectrally encoded parallel light delivery

2005 ◽  
Vol 30 (19) ◽  
pp. 2593 ◽  
Author(s):  
Daqing Piao ◽  
Shudong Jiang ◽  
Subhadra Srinivasan ◽  
Hamid Dehghani ◽  
Brian W. Pogue
Keyword(s):  
Near Infrared ◽  
Optical Tomography ◽  
Light Delivery ◽  
Spectrally Encoded

scholarly journals Design and implementation of a multifrequency near-infrared diffuse optical tomography system

2006 ◽  
Vol 11 (1) ◽  
pp. 014020 ◽  
Author(s):  
Gultekin Gulsen ◽  
Bin Xiong ◽  
Ozlem Birgul ◽  
Orhan Nalcioglu
Keyword(s):  
Near Infrared ◽  
Optical Tomography ◽  
Diffuse Optical Tomography ◽  
Design And Implementation ◽  
Tomography System

scholarly journals Real-Time Dual-Wavelength Time-Resolved Diffuse Optical Tomography System for Functional Brain Imaging Based on Probe-Hosted Silicon Photomultipliers

Sensors ◽  
2020 ◽  
Vol 20 (10) ◽  
pp. 2815
Author(s):  
David Orive-Miguel ◽  
Laura Di Sieno ◽  
Anurag Behera ◽  
Edoardo Ferocino ◽  
Davide Contini ◽  
...  
Keyword(s):  
Brain Imaging ◽  
Near Infrared ◽  
Optical Tomography ◽  
Diffuse Optical Tomography ◽  
Brain Activation ◽  
Functional Brain Imaging ◽  
Dual Wavelength ◽  
Silicon Photomultipliers ◽  
Functional Brain ◽  
Tomography System

Near-infrared diffuse optical tomography is a non-invasive photonics-based imaging technology suited to functional brain imaging applications. Recent developments have proved that it is possible to build a compact time-domain diffuse optical tomography system based on silicon photomultipliers (SiPM) detectors. The system presented in this paper was equipped with the same eight SiPM probe-hosted detectors, but was upgraded with six injection fibers to shine the sample at several points. Moreover, an automatic switch was included enabling a complete measurement to be performed in less than one second. Further, the system was provided with a dual-wavelength (670 n m and 820 n m ) light source to quantify the oxy- and deoxy-hemoglobin concentration evolution in the tissue. This novel system was challenged against a solid phantom experiment, and two in-vivo tests, namely arm occlusion and motor cortex brain activation. The results show that the tomographic system makes it possible to follow the evolution of brain activation over time with a 1 s -resolution.

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