TY - JOUR
T1 - Basic investigation on reflection mode ultrasonic attenuation tomography
AU - Hamamoto, Kazuhiko
AU - Andreas, Budi
AU - Shiina, Tsuyoshi
AU - Ito, Masayasu
PY - 1995/5
Y1 - 1995/5
N2 - Quantitative evaluation of tissue character by medical ultrasound is called \lq\lqtissue characterization”, and it is one of the most important themes for medical ultrasonics. \lq\lqUltrasonic computed tomography (CT)” is expected to enable reconstruction of a quantitative image, which can show new diagnostic information such as the slope of the attenuation coefficient. Transmission mode CT and diffraction tomography, however, are affected by bone and unknown ultrasonic characters. In this paper, a new method of reconstructing an exact and quantitative distribution of the slope of the attenuation coefficient is proposed. This method uses reflected pulse waves in order to avoid the influence of bone. Moreover, this method is independent of unknown sound velocities, transmittances, reflectances and white noise. Simulation results show that it is possible to reconstruct a quantitative image of a region including bone from noisy data, by this method.
AB - Quantitative evaluation of tissue character by medical ultrasound is called \lq\lqtissue characterization”, and it is one of the most important themes for medical ultrasonics. \lq\lqUltrasonic computed tomography (CT)” is expected to enable reconstruction of a quantitative image, which can show new diagnostic information such as the slope of the attenuation coefficient. Transmission mode CT and diffraction tomography, however, are affected by bone and unknown ultrasonic characters. In this paper, a new method of reconstructing an exact and quantitative distribution of the slope of the attenuation coefficient is proposed. This method uses reflected pulse waves in order to avoid the influence of bone. Moreover, this method is independent of unknown sound velocities, transmittances, reflectances and white noise. Simulation results show that it is possible to reconstruct a quantitative image of a region including bone from noisy data, by this method.
KW - Attenuation coefficient
KW - Computed tomography
KW - Medical ultrasonics
KW - Reflection mode
KW - Simulation
KW - Tissue characterization
UR - http://www.scopus.com/inward/record.url?scp=0029309404&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0029309404&partnerID=8YFLogxK
U2 - 10.1143/JJAP.34.2812
DO - 10.1143/JJAP.34.2812
M3 - Article
AN - SCOPUS:0029309404
VL - 34
SP - 2812
EP - 2816
JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
SN - 0021-4922
IS - 5S
ER -