A carbon nanotube field emission multipixel x-ray array source for microradiotherapy application

Journal Article · Mon May 23 00:00:00 EDT 2011 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.3595268· OSTI ID:21518461

Sigen, Wang ^[1]; Calderon, Xiomara; Rui, Peng ^[2]; Schreiber, Eric C ^[1]; Zhou, Otto ^[3]; Chang, Sha ^[1]

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1. Department of Radiation Oncology, University of North Carolina at Chapel Hill, North Carolina 27599 (United States)
2. Curriculum of Applied and Materials Sciences, University of North Carolina at Chapel Hill, North Carolina 27599 (United States)
3. Department of Physics and Astronomy, University of North Carolina at Chapel Hill, North Carolina 27599 (United States)

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 (5x10) 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.

• OSTI ID: 21518461
• Journal Information: Applied Physics Letters, Vol. 98, Issue 21; Other Information: DOI: 10.1063/1.3595268; (c) 2011 American Institute of Physics; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
62 RADIOLOGY AND NUCLEAR MEDICINE
BEAMS
CARBON
COMPUTERIZED SIMULATION
DISTRIBUTION
DOSE RATES
DOSIMETRY
ELECTRONS
FIELD EMISSION
IRRADIATION
MONTE CARLO METHOD
NANOTUBES
NEOPLASMS
RADIOTHERAPY
RESOLUTION
X-RAY SOURCES
CALCULATION METHODS
DISEASES
ELEMENTARY PARTICLES
ELEMENTS
EMISSION
FERMIONS
LEPTONS
MEDICINE
NANOSTRUCTURES
NONMETALS
NUCLEAR MEDICINE
RADIATION SOURCES
RADIOLOGY
SIMULATION
THERAPY