@article{oai:repo.qst.go.jp:00044999,
 author = {Iwaoka, Kazuki and Tokonami, Shinji and Yonehara, Hidenori and Ishikawa, Tetsuo and Doi, Masahiro and Kobayashi, Yosuke and Yatabe, Yoshinori and Takahashi, Hiroyuki and Yamada, Yuji and 岩岡 和輝 and 床次 眞司 and 米原 英典 and 石川 徹夫 and 土居 雅広 and 小林 羊佐 and 谷田部 慶憲 and 高橋 博路 and 山田 裕司},
 issue = {9},
 journal = {Review of Scientific Instruments},
 month = {Sep},
 note = {The deposition of radon decay products is not equal in each of the respiratory regions and as the presence of radon has been linked with an increase in lung cancer risk, it is important to calculate the deposition of radon decay products in each of the respiratory regions. Recently, many studies on the deposition of radon in respiratory regions have been simulated using wire screens. The systems and equipment used in those studies are not suitable for field measurements as their dimensions are relatively massive, nor can they measure continuously. We developed a continuous bronchial dosimeter (CBD) which is suitable for field measurements. It was designed with specifications that allow it to be remain compact. The CBD simulates the deposition of radon decay products in the different respiratory regions by the use of a combination of wire screens. Deposition in the simulated regions of the lung can be continuously estimated in various environments. The ratio of activities deposited in a simulated nasal cavity (N) and tracheobronchial (TB) regions was calculated from the results of simultaneous measurements using CBD-R (reference), CBD-N (nasal), and CBD-TB (tracheobronchial) measurement units. After aerosols were injected into the radon chamber, the ratio of N and TB depositions decreased. This results indicate that the CBD gave a good response to changes in the environment. It was found that the ratio of N and TB deposition also varied with time in each actual environment.},
 pages = {093301-1--093301-4},
 title = {Continuous measurements of bronchial exposure induced by radon decay products during inharation},
 volume = {78},
 year = {2007}
}