title: A carbon nanotube field emission multipixel x-ray array source for microradiotherapy application.
abstract: The authors report a carbon nanotube (CNT) field emission multipixel x-ray array source for microradiotherapy for cancer research. The developed multipixel x-ray array source has 50 individually controllable pixels and it has several distinct advantages over other irradiation source including high-temporal resolution (millisecond level), the ability to electronically shape the form, and intensity distribution of the radiation fields. The x-ray array was generated by a CNT cathode array (5×10) chip with electron field emission. A dose rate on the order of >1.2 Gy∕min per x-ray pixel beam is achieved at the center of the irradiated volume. The measured dose rate is in good agreement with the Monte Carlo simulation result.
authors.forename: Sigen
authors.initials: S
authors.lastname: Wang
authors.forename: Xiomara
authors.initials: X
authors.lastname: Calderon
authors.forename: Rui
authors.initials: R
authors.lastname: Peng
authors.forename: Eric C
authors.initials: EC
authors.lastname: Schreiber
authors.forename: Otto
authors.initials: O
authors.lastname: Zhou
authors.forename: Sha
authors.initials: S
authors.lastname: Chang