نتایج جستجو برای: bnct

تعداد نتایج: 489  

2015
Hironori Horiguchi Tatsuhiko Sato Hiroaki Kumada Tetsuya Yamamoto Takeji Sakae

The absorbed doses deposited by boron neutron capture therapy (BNCT) can be categorized into four components: α and (7)Li particles from the (10)B(n, α)(7)Li reaction, 0.54-MeV protons from the (14)N(n, p)(14)C reaction, the recoiled protons from the (1)H(n, n) (1)H reaction, and photons from the neutron beam and (1)H(n, γ)(2)H reaction. For evaluating the irradiation effect in tumors and the s...

Journal: :Cancer research 2001
E L Kreimann M E Itoiz A Dagrosa R Garavaglia S Farías D Batistoni A E Schwint

Herein we propose and validate the hamster cheek pouch model of oral cancer for boron neutron capture therapy (BNCT) studies. This model serves to explore new applications of the technique, study the biology and radiobiology of BNCT, and assess the uptake of boron compounds and response of tumor, precancerous tissue, and clinically relevant normal tissues. These issues are central to evaluating...

Journal: :Medical physics 2000
C L Lee X L Zhou R J Kudchadker F Harmon Y D Harker

Advanced methods of boron neutron capture therapy (BNCT) use an epithermal neutron beam in conjunction with tumor-targeting boron compounds for irradiation of glioblastomas and metastatic melanomas. A common neutron-producing reaction considered for accelerator-based BNCT is 7Li(p,n)7Be, whose cross section increases very rapidly within several tens of keV of the reaction threshold at 1.88 MeV....

2013
Keiko Fujiwara Yuko Kinashi Tomoyuki Takahashi Hiroshi Yashima Kouta Kurihara Yoshinori Sakurai Hiroki Tanaka Koji Ono Sentaro Takahashi

Since 1990, Boron Neutron Capture Therapy (BNCT) has been used for over 400 cancer patients at the Kyoto University Research Reactor Institute (KURRI). After BNCT, the patients are radioactive and their (24)Na and (38)Cl levels can be detected via a Na-I scintillation counter. This activity is predominantly due to (24)Na, which has a half-life of 14.96 h and thus remains in the body for extende...

Journal: :Head & neck 2006
Teruhito Aihara Junichi Hiratsuka Norimasa Morita Masako Uno Yoshinori Sakurai Akira Maruhashi Koji Ono Tamotsu Harada

BACKGROUND We investigated the application of boron neutron capture therapy (BNCT) to suitable cancers other than glioblastoma and melanoma. Head and neck malignancies were consequently selected as adaptable cancers. We reported the clinical results of our first case treated and discussed several advantages to the application of BNCT to head and neck tumors. METHODS The patient was a 48-year-...

Journal: :Cancers 2023

Background: Boron Neutron Capture Therapy (BNCT) is an emerging radiotherapy. There are ongoing efforts to develop a Canadian accelerator-based BNCT center. However, it remains unclear how radiation oncologists (RO), medical physicists (MP), and their trainees perceive its impact on oncology as discipline. Methods: A survey was created explore the knowledge of BNCT, clinical role, support for r...

Journal: :Cancer research 1992
S C Saris G R Solares D E Wazer G Cano S E Kerley M A Joyce L S Adelman O K Harling H Madoc-Jones R G Zamenhof

Boron neutron capture therapy (BNCT) involves administration of a boron compound followed by neutron irradiation of the target organ. The boron atom captures a neutron, which results in the release of densely ionizing helium and lithium ions that are highly damaging and usually lethal to cells within their combined track length of approximately 12 microns. Prior to Phase I clinical trials for p...

Journal: :International journal of clinical and experimental pathology 2014
Xiaomei Ma Chunyan Xia Dong Liu Huimin Liu Chenguang Wang Hongyu Yu

PURPOSE To analyze the clinical data, MRI, pathological diagnosis, treatment and long-term effects of benign notochordal cell tumor (BNCT), a newly described novel spine tumor. METHODS We retrospectively studied 11 patients' clinical data of the above. RESULTS The ratio of males to females was 4:7, and the average age was 49.2 years (range, 18-74 years). Cervical vertebra (5; 38.5%) and tho...

2015
T. R. Edgecock J. R. J. Bennett S. Green M. Scott

Boron Neutron Capture Therapy (BNCT) is a binary cancer therapy particularly well-suited to treating aggressive tumours that exhibit a high degree of infiltration of the surrounding healthy tissue. Such tumours, for example of the brain and lung, provide some of the most challenging problems in oncology. The first element of the therapy is boron-10 which is preferentially introduced into the ca...

2005
A. Valda D. M. Minsky A. J. Kreiner A. A. Burlon H. Somacal

Within our activities on accelerator-based boron neutron capture therapy (BNCT) carried out at the Tandar Laboratory (Comisión Nacional de Energı́a Atómica, Argentina) we present here the study and design of a tomographic imaging system for the measurement of the spatial distribution of the absorbed dose during a BNCT session. The 10B(n,α)7Li boron neutron capture reaction produces a 478 keV gam...

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