TY - GEN
T1 - Studies on viscosity, pH and temperature of high concentration barium sulfate in mass screening for gastric cancer - Particle size distribution - Particle s
AU - Yamamoto, Kenyu
AU - Takeda, Y.
AU - Kuroda, C.
AU - Kubo, T.
AU - Gotanda, T.
AU - Tabuchi, A.
AU - Yatake, H.
AU - Kuwano, T.
AU - Katsuda, T.
AU - Yamazaki, H.
AU - Azuma, M.
PY - 2008/12/1
Y1 - 2008/12/1
N2 - Recently, mass screening for gastric cancer has been popularized in Japan. In the screening, gastric radiography is carried out using a contrast medium, usually barium sulfate. Recently, a high concentration barium sulfate has been developed and is currently used in several medical facilities. However, high concentration barium sulfate flows out of the stomach faster than a solution of lower concentration used in the past, which interferes with the diagnosis. The flow rate is dependent on the viscosity of barium sulfate, which changes based on gastric pH and temperature. In this study, the viscosity changes of barium sulfate induced by pH and temperature changes were examined. Two types of high concentration barium sulfate, 185B barium and 200C barium, and one type of moderate concentration barium sulfate, 145A barium, were used in this study. The radiographs of gastric phantoms applied with the three types of barium sulfate were also tested under several different pH and temperature conditions. Furthermore, we analyzed the particle size distribution of the three types of barium sulfate. The results indicated that 185B barium is the best among three types tested for gastric radiography. This study of characteristics of barium sulfate may improve radiography technology in mass screenings for gastric cancer.
AB - Recently, mass screening for gastric cancer has been popularized in Japan. In the screening, gastric radiography is carried out using a contrast medium, usually barium sulfate. Recently, a high concentration barium sulfate has been developed and is currently used in several medical facilities. However, high concentration barium sulfate flows out of the stomach faster than a solution of lower concentration used in the past, which interferes with the diagnosis. The flow rate is dependent on the viscosity of barium sulfate, which changes based on gastric pH and temperature. In this study, the viscosity changes of barium sulfate induced by pH and temperature changes were examined. Two types of high concentration barium sulfate, 185B barium and 200C barium, and one type of moderate concentration barium sulfate, 145A barium, were used in this study. The radiographs of gastric phantoms applied with the three types of barium sulfate were also tested under several different pH and temperature conditions. Furthermore, we analyzed the particle size distribution of the three types of barium sulfate. The results indicated that 185B barium is the best among three types tested for gastric radiography. This study of characteristics of barium sulfate may improve radiography technology in mass screenings for gastric cancer.
KW - High concentration barium sulfate
KW - PH
KW - Particle size distribution
KW - Temperature
KW - Viscosity
UR - http://www.scopus.com/inward/record.url?scp=70350648721&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=70350648721&partnerID=8YFLogxK
U2 - 10.1007/978-3-540-89208-3_368
DO - 10.1007/978-3-540-89208-3_368
M3 - Conference contribution
AN - SCOPUS:70350648721
SN - 9783540892076
T3 - IFMBE Proceedings
SP - 1548
EP - 1551
BT - 4th European Conference of the International Federation for Medical and Biological Engineering - ECIFMBE 2008
T2 - 4th European Conference of the International Federation for Medical and Biological Engineering, ECIFMBE 2008
Y2 - 23 November 2008 through 27 November 2008
ER -
