Measurement of human-body-window spectra using a white power light-emitting diode and its application to high-spatial-resolution computed tomography

Jun
24
2019

European Conferences on Biomedical Optics (ECBO) > Preclinical and Clinical Optical Diagnostics > Lunch Break and Poster Session - Monday

24. Jun 2019
12:45-14:15 h  |  Hall B0 Hall B0, ICM

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Subjects: 

Biophotonics and Medical Engineering

Participants: 

Hodaka Moriyama 

(Toho University)

Type:
Poster
Speech: English
Human body mainly consists of muscle, bone and air, and we name penetrating photons the human-body-window (HBW) rays. The HBW spectra were measured using a white power light-emitting diode (LED) and a spectrometer. The photons from the LED penetrate the human body, and reflect, refract and scatter. Therefore, we measured only penetrating HBW spectra from the human body. In the HBW-CT, we used two 1.0-mm-diam copper pinholes and a 1.0-mm-diam polyacetal collimator. The white rays from the LED is focused by a lens, the white beam diameter is reduced using the pinhole, and the 1.0-mm-diam beam is exposed to the object. The penetrating HBW photons are selected out using the pinhole behind the object and detected by the phototransistor through the collimator. HBW-CT is accomplished by repeated translations and rotations of the object. The peak wavelength of the HBW spectra was 610 nm. The translation and rotation steps were 0.25 mm and 1.0º, respectively, and the spatial resolutions were determined as 1.0×1.0 mm2. The scanning time and a total rotation angle for CT were 9.8 min and 180º, respectively.

Author
Hodaka Moriyama, Toho University Show Profile

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EntranceEast
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Outdoor areas
EntranceNorth-East
ConferenceCenter Nord
ICM
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C1
C2
C3
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C5
C6
B1
B2
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B4
B5
B6
EntranceWest
Atrium
EntranceEast
A1
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Jun
24
2019

European Conferences on Biomedical Optics (ECBO) > Preclinical and Clinical Optical Diagnostics > Lunch Break and Poster Session - Monday

Blood plasma separation using microfluidic guiding channel in a continuous fashion

24. Jun 2019
12:45-14:15 h  |  Hall B0 Hall B0, ICM

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Jun
24
2019

European Conferences on Biomedical Optics (ECBO) > Preclinical and Clinical Optical Diagnostics > Lunch Break and Poster Session - Monday

Monitoring x-rays exposed and unexposed cell culture media by means of surface-enhanced Raman spectroscopy

24. Jun 2019
12:45-14:15 h  |  Hall B0 Hall B0, ICM

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Jun
24
2019

European Conferences on Biomedical Optics (ECBO) > Preclinical and Clinical Optical Diagnostics > Lunch Break and Poster Session - Monday

Terahertz time-domain spectroscopy for human gastric cancer diagnosis

24. Jun 2019
12:45-14:15 h  |  Hall B0 Hall B0, ICM

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Jun
24
2019

European Conferences on Biomedical Optics (ECBO) > Preclinical and Clinical Optical Diagnostics > Lunch Break and Poster Session - Monday

Optical coherence tomography (OCT) imaging for detection of chronic lung allograft dysfunction (CLAD) in lung transplant patients

24. Jun 2019
12:45-14:15 h  |  Hall B0 Hall B0, ICM

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Jun
24
2019

European Conferences on Biomedical Optics (ECBO) > Diffuse Optical Spectroscopy and Imaging > Lunch Break and Poster Session - Monday

Monitoring radiofrequency ablation of biological tissue using broadband time-resolved diffuse optical spectroscopy

24. Jun 2019
12:45-14:15 h  |  Hall B0 Hall B0, ICM

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