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The event database contains all event-related information for the World of Photonics Congress.

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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
24. JUN 2019

Poster Hall B0 European Conferences on Biomedical Optics (ECBO) > Preclinical and Clinical Optical Diagnostics > Lunch Break and Poster Session - Monday

12:45-14:15 h | Hall B0 Hall B0, ICM

Subjects: Biophotonics and Medical Engineering

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.

Informations

Author,
Toho University

Hodaka Moriyama
Hodaka Moriyama

Location

Eingang
Nord-West
ICM
Eingang
Nord
Eingang
West
Atrium
Eingang
Nord-Ost
Eingang
Ost
Conference
Center Nord
Freigelände
C1
C2
C3
C4
C5
C6
B0
B1
B2
B3
B4
B5
B6
A1
A2
A3
A4
A5
A6

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