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Carbon ion radiotherapy

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https://www.readbyqxmd.com/read/29121984/carbon-ion-radiotherapy-impact-of-tumor-differentiation-on-local-control-in-experimental-prostate-carcinomas
#1
Christin Glowa, Peter Peschke, Stephan Brons, Oliver C Neels, Klaus Kopka, Jürgen Debus, Christian P Karger
BACKGROUND: To summarize the research activities of the "clinical research group heavy ion therapy", funded by the German Research Foundation (DFG, KFO 214), on the impact of intrinsic tumor characteristics (grading, hypoxia) on local tumor control after carbon ((12)C-) ion- and photon irradiations. METHODS: Three sublines of syngeneic rat prostate tumors (R3327) with various differentiation levels (highly (-H), moderately (-HI) or anaplastic (-AT1), (diameter 10 mm) were irradiated with 1, 2 and 6 fractions of either (12)C-ions or 6 MV photons using increasing dose levels...
November 9, 2017: Radiation Oncology
https://www.readbyqxmd.com/read/29116014/quantitative-assessment-of-radiation-dose-and-fractionation-effects-on-normal-tissue-by-utilizing-a-novel-lung-fibrosis-index-model
#2
Cheng Zhou, Bleddyn Jones, Mahmoud Moustafa, Christian Schwager, Julia Bauer, Bing Yang, Liji Cao, Min Jia, Andrea Mairani, Ming Chen, Longhua Chen, Juergen Debus, Amir Abdollahi
BACKGROUND: Normal lung tissue tolerance constitutes a limiting factor in delivering the required dose of radiotherapy to cure thoracic and chest wall malignancies. Radiation-induced lung fibrosis (RILF) is considered a critical determinant for late normal tissue complications. While RILF mouse models are frequently approached e.g., as a single high dose thoracic irradiation to investigate lung fibrosis and candidate modulators, a systematic radiobiological characterization of RILF mouse model is urgently needed to compare relative biological effectiveness (RBE) of particle irradiation with protons, helium-, carbon and oxygen ions now available at HIT...
November 7, 2017: Radiation Oncology
https://www.readbyqxmd.com/read/29115938/carbon-ion-radiotherapy-for-80%C3%A2-years-or-older-patients-with-hepatocellular-carcinoma
#3
Shintaro Shiba, Takanori Abe, Kei Shibuya, Hiroyuki Katoh, Yoshinori Koyama, Hirohumi Shimada, Satoru Kakizaki, Ken Shirabe, Hiroyuki Kuwano, Tatsuya Ohno, Takashi Nakano
BACKGROUND: To evaluate the safety and efficacy of carbon ion radiotherapy (C-ion RT) for 80 years or older patients with hepatocellular carcinoma (HCC). METHODS: Eligibility criteria of this retrospective study were: 1) HCC confirmed by histology or typical hallmarks of HCC by imaging techniques of four-phase multidetector-row computed tomography or dynamic contrast-enhanced magnetic resonance imaging; 2) no intrahepatic metastasis or distant metastasis; 3) no findings suggesting direct infiltration of the gastrointestinal tract; 4) performance status ≤2 by Eastern Cooperative Oncology Group classification; and 5) Child-Pugh classification A or B...
November 7, 2017: BMC Cancer
https://www.readbyqxmd.com/read/29100701/robustness-of-patient-positioning-for-interfractional-error-in-carbon-ion-radiotherapy-for-stage-i-lung-cancer-bone-matching-versus-tumor-matching
#4
Makoto Sakai, Yoshiki Kubota, Jun-Ichi Saitoh, Daisuke Irie, Katsuyuki Shirai, Ryosuke Okada, Masami Torikoshi, Tatsuya Ohno, Takashi Nakano
BACKGROUND AND PURPOSE: Patient positioning was compared by tumor matching (TM) and conventional bony structure matching (BM) in carbon ion radiotherapy for stage I non-small cell lung cancer to evaluate the robustness of TM and BM in determining interfractional error. MATERIAL AND METHODS: Sixty irradiation fields were analyzed. Computed tomography (CT) images acquired before treatment initiation for confirmation (Conf-CT) were obtained under the same settings as the treatment planning CT images and used to evaluate both positioning methods...
October 31, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/29097931/uptake-of-18-f-fet-and-18-f-fch-in-human-glioblastoma-t98g-cell-line-after-irradiation-with-photons-or-carbon-ions
#5
Francesca Pasi, Marco Giovanni Persico, Federica Eleonora Buroni, Carlo Aprile, Marina Hodolic, Franco Corbella, Rosanna Nano, Angelica Facoetti, Lorenzo Lodola
The differential diagnosis between recurrence of gliomas or brain metastases and this phenomenon is important in order to choose the best therapy and predict the prognosis but is still a big problem for physicians. The new emerging MRI, CT, and PET diagnostic modalities still lack sufficient accuracy. Radiolabeled choline and amino acids have been reported to show great tumor specificity. We studied the uptake kinetics of [(18)F]fluoromethyl-choline (FCH) and O-(2-[(18)F]fluoroethyl)-L-tyrosine (FET) by the T98G human glioblastoma cells from 20 to 120 min after irradiation either with photons at 2-10-20 Gy or with carbon ions at 2 Gy (at the National Centre for Oncological Hadrontherapy (CNAO), Pavia, Italy)...
2017: Contrast Media & Molecular Imaging
https://www.readbyqxmd.com/read/29092716/the-150-most-important-questions-in-cancer-research-and-clinical-oncology-series-questions-67-75-edited-by-chinese-journal-of-cancer
#6
EDITORIAL
(no author information available yet)
Since the beginning of 2017, Chinese Journal of Cancer has published a series of important questions in cancer research and clinical oncology, which sparkle diverse thoughts, interesting communications, and potential collaborations among researchers all over the world. In this article, 9 more questions are presented as followed. Question 67. How could we overcome the resistance of hepatocellular carcinoma against chemotherapeutics? Question 68. Is pursuit of non-covalent small-molecule binders of RAS proteins viable as a strategy of cancer drug discovery? Question 69...
November 1, 2017: Chinese Journal of Cancer
https://www.readbyqxmd.com/read/29036364/nanodosimetry-towards-a-new-concept-of-radiation-quality
#7
V Conte, A Selva, P Colautti, G Hilgers, H Rabus, A Bantsar, M Pietrzak, S Pszona
The biological action of ionizing charged particles is initiated at the DNA level, and the effectiveness with which the initial physical effect changes into measurable biological damage is likely ruled by the stochastics of ionizations produced by the incident ions in subcellular nanometric volumes. Based on this hypothesis, experimental nanodosimetry aims at establishing a new concept of radiation quality that builds on measurable characteristics of the particle track structure at the nanometer scale. Three different nanodosimetric detection systems have been developed to date that allow measurements of the number of ionizations produced by the passage of a primary particle in a nanometer-size gas volume (in unit density scale)...
September 23, 2017: Radiation Protection Dosimetry
https://www.readbyqxmd.com/read/28992088/carbon-ion-radiotherapy-for-patients-with-advanced-stage-non-small-cell-lung-cancer-at-multicenters
#8
Masataka Karube, Naoyoshi Yamamoto, Yoshiyuki Shioyama, Junichi Saito, Akira Matsunobu, Tamaki Okimoto, Tatsuya Ohno, Hiroshi Tsuji, Takashi Nakano, Tadashi Kamada
Carbon-ion radiation therapy (CIRT) for advanced non-small-cell lung cancer (NSCLC) has not been well studied to date. This paper aimed to analyze a retrospective multicenter survey for detecting problems with the use of CIRT for Stage II and III NSCLC (7th UICC TNM Staging System). Inclusion was restricted to patients with Stage II and III NSCLC who received CIRT from November 2003 to December 2014. We gathered the data from three CIRT operating centers on July 2015. Patients with radiotherapy history, patients with cancers other than lung cancer, and those receiving palliative therapies were excluded...
September 1, 2017: Journal of Radiation Research
https://www.readbyqxmd.com/read/28982885/potential-pitfalls-of-a-fiducial-marker-matching-technique-in-carbon-ion-radiotherapy-for-lung-cancer
#9
Shintaro Shiba, Jun-Ichi Saitoh, Daisuke Irie, Katsuyuki Shirai, Takanori Abe, Yoshiki Kubota, Makoto Sakai, Ryosuke Okada, Tatsuya Ohno, Takashi Nakano
BACKGROUND/AIM: To analyze the accuracy of patient positioning and dose distribution quality using a fiducial marker-matching technique in carbon-ion radiotherapy (C-ion RT) for stage I lung cancer. PATIENTS AND METHODS: Thirteen patients with 26 fiducial markers and 104 radiation fields were examined. Change in the fiducial marker position coordinates from the gross tumor volume center (Δm), and change in the water-equivalent path length of the chest wall (ΔWEL) were measured in each radiation field...
October 2017: Anticancer Research
https://www.readbyqxmd.com/read/28982873/clinical-impact-of-re-irradiation-with-carbon-ion-radiotherapy-for-lymph-node-recurrence-of-gynecological-cancers
#10
Shintaro Shiba, Noriyuki Okonogi, Shingo Kato, Masaru Wakatsuki, Daijiro Kobayashi, Hiroki Kiyohara, Tatsuya Ohno, Kumiko Karasawa, Takashi Nakano, Tadashi Kamada
BACKGROUND/AIM: To evaluate the safety and efficacy of re-irradiation with carbon-ion radiotherapy (C-ion RT) for lymph node recurrence of gynecological cancers after definitive radiotherapy. PATIENTS AND METHODS: Data regarding patients with unresectable and isolated recurrent lymph node from gynecological cancer after definitive radiotherapy were analyzed. Total dose of C-ion RT was 48-57.6 Gy (RBE) in 12 or 16 fractions. RESULTS: Sixteen patients received re-irradiation by C-ion RT were analyzed...
October 2017: Anticancer Research
https://www.readbyqxmd.com/read/28978091/low-dose-photon-irradiation-induces-invasiveness-through-the-sdf-1%C3%AE-cxcr4-pathway-in-malignant-mesothelioma-cells
#11
Yoshikane Yamauchi, Seyer Safi, Lena Orschiedt, Adriane Gardyan, Stephan Brons, Juliane Rieber, Nils H Nicolay, Peter E Huber, Martin Eichhorn, Hendrik Dienemann, Felix J F Herth, Klaus-Josef Weber, Jürgen Debus, Hans Hoffmann, Stefan Rieken
BACKGROUND: Low-dose photon irradiation has repeatedly been suspected to increase a risk of promoting local recurrence of disease or even systemic dissemination. The purpose of this study was to investigate the motility of malignant pleural mesothelioma (MPM) cell lines after low-doses of photon irradiation and to elucidate the mechanism of the detected phenotype. METHODS: H28 and H226 MPM cells were examined in clonogenic survival experiments and migration assays with and without various doses of photon and carbon ion irradiation...
September 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28976361/rbe-and-related-modeling-in-carbon-ion-therapy
#12
Christian P Karger, Peter Peschke
Carbon ion therapy is a promising evolving modality in radiotherapy to treat tumors, which are radioresistant against photon treatments. As carbon ions are more effective in normal and tumor tissue, the relative biological effectiveness (RBE) has to be calculated by bio-mathematical models and has to be considered in the dose prescription. This review (i) intro-duces the concept of the RBE and its most important determinants, (ii) describes the physical and biological causes of the increased RBE for carbon ions, (iii) summarizes available RBE-measurements in-vitro and in-vivo, describes the (iv) concepts of the clinically applied RBE models (Mixed beam model, Local effect model, Microdosimetric-kinetic model), and (v) the way they are introduced into clinical application as well as (vi) their status of experimental and clinical validation, and finally (vii) summarizes the current status of the use of the RBE-concept in carbon ion therapy and points out clinically relevant conclusions as well as open questions...
October 4, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28921785/cancer-specific-mortality-of-high-risk-prostate-cancer-after-carbon-ion-radiotherapy-plus-long-term-androgen-deprivation-therapy
#13
Goro Kasuya, Hitoshi Ishikawa, Hiroshi Tsuji, Yasuo Haruyama, Gen Kobashi, Daniel K Ebner, Koichiro Akakura, Hiroyoshi Suzuki, Tomohiko Ichikawa, Jun Shimazaki, Hirokazu Makishima, Takuma Nomiya, Tadashi Kamada, Hirohiko Tsujii
The treatment outcomes of patients with high-risk localized prostate cancer (PC) after carbon-ion radiotherapy (CIRT) combined with long-term androgen deprivation therapy (LTADT) were analyzed, and compared with those of other treatment modalities, focusing on PC-specific mortality (PCSM). A total of 1247 patients were enrolled in three phase II clinical trials of fixed-dose CIRT between 2000 and 2013. Excluding patients with T4 disease, 608 patients with high- or very-high-risk PC, according to the National Comprehensive Cancer Network classification system, who received CIRT with LTADT were evaluated...
September 16, 2017: Cancer Science
https://www.readbyqxmd.com/read/28886211/homogeneity-study-of-proton-and-carbon-ion-scanning-beams-using-combinations-of-different-spot-sizes-and-grid-sizes
#14
Ying Xing, Xianwei Wu, Yongqiang Li, Jun Zhao
PURPOSE: Different scanning ion beam delivery systems have different delivery accuracies, and the resulting delivery errors will affect field homogeneity. This study was performed to determine an appropriate combination of spot size (FWHM) and spot grid size (GS), which can provide homogenous dose distributions for both proton and carbon ion scanning beam radiotherapy. The combination of the two parameters is represented by a combination factor named n, which is the quotient of FWHM divided by GS...
September 8, 2017: Medical Physics
https://www.readbyqxmd.com/read/28883414/a-general-mechanistic-model-enables-predictions-of-the-biological-effectiveness-of-different-qualities-of-radiation
#15
Stephen J McMahon, Aimee L McNamara, Jan Schuemann, Harald Paganetti, Kevin M Prise
Predicting the responses of biological systems to ionising radiation is extremely challenging, particularly when comparing X-rays and heavy charged particles, due to the uncertainty in their Relative Biological Effectiveness (RBE). Here we assess the power of a novel mechanistic model of DNA damage repair to predict the sensitivity of cells to X-ray, proton or carbon ion exposures in vitro against over 800 published experiments. By specifying the phenotypic characteristics of cells, the model was able to effectively stratify X-ray radiosensitivity (R (2) = 0...
September 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28871342/a-systematic-review-of-publications-on-charged-particle-therapy-for-hepatocellular-carcinoma
#16
REVIEW
Hiroshi Igaki, Masashi Mizumoto, Toshiyuki Okumura, Kiyoshi Hasegawa, Norihiro Kokudo, Hideyuki Sakurai
Charged particle therapy (proton beam therapy and carbon ion therapy) is a form of radiotherapy which has the unique characteristic of superior depth dose distribution, and has been used for the treatment of hepatocellular carcinoma (HCC) in a limited number of patients, especially in Japan. We undertook a systematic review to define the clinical utility of charged particle therapy for patients with HCC. We searched the MEDLINE database from 1983 to June 2016 to identify clinical studies on charged particle therapy for HCC...
September 4, 2017: International Journal of Clinical Oncology
https://www.readbyqxmd.com/read/28867558/dose-volume-histogram-analysis-of-brainstem-necrosis-in-head-and-neck-tumors-treated-using-carbon-ion-radiotherapy
#17
Katsuyuki Shirai, Kyohei Fukata, Akiko Adachi, Jun-Ichi Saitoh, Atsushi Musha, Takanori Abe, Tatsuaki Kanai, Daijiro Kobayashi, Yuka Shigeta, Satoshi Yokoo, Kazuaki Chikamatsu, Tatsuya Ohno, Takashi Nakano
BACKGROUND AND PURPOSE: We aimed to evaluate the relationship between brainstem necrosis and dose-volume histograms in patients with head and neck tumors after carbon-ion radiotherapy. MATERIAL AND METHODS: We evaluated 85 patients with head and neck tumors who underwent carbon-ion radiotherapy and were followed-up for ≥12months. Brainstem necrosis was evaluated using the Common Terminology Criteria for Adverse Events (version 4.0). RESULTS: The median follow-up was 24months, and four patients developed grade 1 brainstem necrosis, with 2-year and 3-year cumulative rates of 2...
August 31, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28865463/carbon-ion-radiotherapy-for-non-small-cell-lung-cancer-with-interstitial-lung-disease-a%C3%A2-retrospective-analysis
#18
Mio Nakajima, Naoyoshi Yamamoto, Kazuhiko Hayashi, Masataka Karube, Daniel K Ebner, Wataru Takahashi, Makoto Anzai, Kenji Tsushima, Yuji Tada, Koichiro Tatsumi, Tadaaiki Miyamoto, Hiroshi Tsuji, Takehiko Fujisawa, Tadashi Kamada
BACKGROUND: Lung cancer is frequently complicated by interstitial lung disease (ILD). Treatment protocols for lung cancer patients with ILD have not been established; surgery, chemotherapy, and radiotherapy can all cause acute exacerbation of ILD. This study evaluated the toxicity and efficacy of carbon ion radiotherapy (CIRT) in patients with non-small cell lung cancer (NSCLC) and ILD. METHODS: Between June 2004 and November 2014, 29 patients diagnosed with NSCLC and ILD were treated with CIRT...
September 2, 2017: Radiation Oncology
https://www.readbyqxmd.com/read/28862152/tumor-control-in-ion-beam-radiotherapy-with-different-ions-in-presence-of-hypoxia-an-oxygen-enhancement-ratio-model-based-on-the-microdosimetric-kinetic-model
#19
Lidia Strigari, Francesca Torriani, Lorenzo Manganaro, Taku Inaniwa, Federico Dalmasso, Roberto Cirio, Andrea Attili
Few attempts to include the oxygen enhancement ratio (OER) in treatment planning for ion beam therapy have been made and systematic studies to evaluate the impact of hypoxia in treatments with beam of different ion species are missing. The radiobiological models used to quantify the OER in such studies are mainly based on the dose-averaged LET estimates and do not explicitly distinguish between ion species and fractionation schemes. In this study a new OER modelling, based on the microdosimetric kinetic model, taking into account the specificity of the different ions, LET spectra, tissues and fractionation schemes, has been developed...
September 1, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28852130/an-approximate-analytical-solution-of-the-bethe-equation-for-charged-particles-in-the-radiotherapeutic-energy-range
#20
David Robert Grimes, Daniel R Warren, Mike Partridge
Charged particles such as protons and carbon ions are an increasingly important tool in radiotherapy. There are however unresolved physics issues impeding optimal implementation, including estimation of dose deposition in non-homogeneous tissue, an essential aspect of treatment optimization. Monte Carlo (MC) methods can be employed to estimate radiation profile, and whilst powerful, these are computationally expensive, limiting practicality. In this work, we start from fundamental physics in the form of the Bethe equation to yield a novel approximate analytical solution for particle range, energy and linear energy transfer (LET)...
August 29, 2017: Scientific Reports
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