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Carbon ion radiotherapy

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https://www.readbyqxmd.com/read/27911139/volumetric-response-of-intracranial-meningioma-after-photon-or-particle-irradiation
#1
Petra Mozes, Jan Oliver Dittmar, Daniel Habermehl, Eric Tonndorf-Martini, Katalin Hideghety, Anne Dittmar, Jürgen Debus, Stephanie E Combs
BACKGROUND: Meningiomas are usually slow growing, well circumscribed intracranial tumors. In symptom-free cases observation with close follow-up imaging could be performed. Symptomatic meningiomas could be surgically removed and/or treated with radiotherapy. The study aimed to evaluate the volumetric response of intracranial meningiomas at different time points after photon, proton, and a mixed photon and carbon ion boost irradiation. PATIENTS AND METHODS: In Group A 38 patients received proton therapy (median dose: 56 GyE in 1...
December 2, 2016: Acta Oncologica
https://www.readbyqxmd.com/read/27908621/radiotherapy-with-curative-intent-in-patients-with-early-stage-medically-inoperable-non-small-cell-lung-cancer-a-systematic-review
#2
REVIEW
Conrad B Falkson, Emily T Vella, Edward Yu, Medhat El-Mallah, Robert Mackenzie, Peter M Ellis, Yee C Ung
Patients with early-stage non-small-cell lung cancer (NSCLC) who are unable to undergo surgery can be offered radiation therapy (RT). Previously, conventional RT was offered; however, newer techniques such as stereotactic body RT (SBRT) have become available. The objective of the present systematic review was to investigate the effectiveness of RT with curative intent in patients with early-stage medically inoperable NSCLC. MEDLINE, EMBASE, and the Cochrane Library were searched for studies comparing stereotactic RT with curative intent compared with observation or other types of RT for early-stage, medically inoperable, NSCLC...
October 27, 2016: Clinical Lung Cancer
https://www.readbyqxmd.com/read/27908146/energy-deposition-clustering-as-a-functional-radiation-quality-descriptor-for-modeling-relative-biological-effectiveness
#3
Fernanda Villegas, Gloria Bäckström, Nina Tilly, Anders Ahnesjö
PURPOSE: To explore the use of the frequency of the energy deposition (ED) clusters of different sizes (cluster order, CO) as a surrogate (instead of, e.g., LET) classification of the physical characteristics of ionizing radiation at a nanometer scale, to construct a framework for the calculation of relative biological effectiveness (RBE) with cell survival as endpoint. METHODS: The frequency of cluster order fCO is calculated by sorting the ED sites generated with the Monte Carlo track structure code LIonTrack into clusters based on a single parameter called the cluster distance dC being the maximum allowed distance between two neighboring EDs belonging to a cluster...
December 2016: Medical Physics
https://www.readbyqxmd.com/read/27846916/intrafractional-dose-variation-and-beam-configuration-in-carbon-ion-radiotherapy-for-esophageal-cancer
#4
M F Haefner, F Sterzing, D Krug, S A Koerber, O Jaekel, J Debus, M M Haertig
BACKGROUND: In carbon ion radiotherapy (CIR) for esophageal cancer, organ and target motion is a major challenge for treatment planning due to potential range deviations. This study intends to analyze the impact of intrafractional variations on dosimetric parameters and to identify favourable settings for robust treatment plans. METHODS: We contoured esophageal boost volumes in different organ localizations for four patients and calculated CIR-plans with 13 different beam geometries on a free-breathing CT...
November 15, 2016: Radiation Oncology
https://www.readbyqxmd.com/read/27836119/a-multi-institutional-analysis-of-prospective-studies-of-carbon-ion-radiotherapy-for-prostate-cancer-a-report-from-the-japan-carbon-ion-radiation-oncology-study-group-j-cros
#5
Takuma Nomiya, Hiroshi Tsuji, Hidemasa Kawamura, Tatsuya Ohno, Shingo Toyama, Yoshiyuki Shioyama, Yuko Nakayama, Kenji Nemoto, Hirohiko Tsujii, Tadashi Kamada
BACKGROUND AND PURPOSE: A multi-institutional observational study (J-CROS1501PR) has been carried out to analyze outcomes of carbon-ion radiotherapy (CIRT) for patients with prostate cancer. PATIENTS AND METHODS: Data of the patients enrolled in prospective studies of following 3 CIRT institutions were analyzed: National Institute of Radiological Sciences (NIRS; Chiba, Japan), Gunma University Heavy Ion Medical Center (GHMC; Gunma, Japan), and Ion Beam Therapy Center, SAGA HIMAT Foundation (HIMAT; Saga, Japan)...
November 2016: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/27798906/radiation-induced-parotid-gland-atrophy-in-patients-with-head-and-neck-cancer-after-carbon-ion-radiotherapy
#6
Takamichi Morikawa, Masashi Koto, Azusa Hasegawa, Ryo Takagi, Akira Fujikawa, Hiroshi Tsuji, Takahiko Shibahara, Tadashi Kamada
BACKGROUND/AIM: This study aimed to clarify the relationship between dosimetric factors and parotid gland (PG) atrophy after carbon ion radiotherapy (C-ion RT). PATIENTS AND METHODS: Fifty-four patients with head and neck tumours were enrolled and 93 irradiated PGs were analyzed. Thirty and 24 patients were treated with total doses [relative biological effectiveness (RBE)] of 57.6 Gy and 64.0 Gy, respectively, in 16 fractions. PG volumes were measured using computed tomographic images obtained before C-ion RT and every 3-6 months thereafter...
October 2016: Anticancer Research
https://www.readbyqxmd.com/read/27770265/hadrontherapy-from-the-italian-radiation-oncologist-point-of-view-face-the-reality-the-italian-society-of-oncological-radiotherapy-airo-survey
#7
Giulia Marvaso, Barbara Vischioni, Barbara Alicja Jereczek-Fossa, Delia Ciardo, Piero Fossati, Tommaso Giandini, Sara Morlino, Mauro Carrara, Paola Romanelli, Elvio Russi, Francesca Valvo, Riccardo Valdagni, Roberto Orecchia
Hadrontherapy has been in constant progress in the past decades. Due to the increasing interest in this field and the spreading of the technique in Italy and worldwide, the Italian Society of Radiation Oncology surveyed (by an online survey) its members regarding their perception of hadrontherapy. The survey outline addressed different items all related to hadrontherapy, such as: demographics (3 items), personal knowledge (5 items), actual use in clinical practice (5 items), and future perspectives and development (5 items)...
October 21, 2016: La Radiologia Medica
https://www.readbyqxmd.com/read/27756356/oral-mucosal-melanoma-treated-with-carbon-ion-radiotherapy-a-case-report
#8
Atsushi Musha, Jun-Ichi Saitoh, Katsuyuki Shirai, Satoshi Yokoo, Tatsuya Ohno, Takashi Nakano
BACKGROUND: Oral mucosal melanoma is a rare disease with a relatively poor prognosis. Carbon ion radiotherapy has been shown to be effective against radiotherapy-resistant tumors owing to its excellent dose concentration and high biological effect. CASE PRESENTATION: Our patient was a 66-year-old Japanese man with oral mucosal melanoma of his right maxillary gingiva (T4aN0M0). He received carbon ion radiotherapy at 57.6 Gy (relative biological effectiveness) in 16 fractions for 4 weeks...
October 18, 2016: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/27737652/ct-guided-cryoablation-for-locally-recurrent-or-metastatic-bone-and-soft-tissue-tumor-initial-experience
#9
Michiro Susa, Kazutaka Kikuta, Robert Nakayama, Kazumasa Nishimoto, Keisuke Horiuchi, Sota Oguro, Masanori Inoue, Hideki Yashiro, Seishi Nakatsuka, Masaya Nakamura, Morio Matsumoto, Kazuhiro Chiba, Hideo Morioka
BACKGROUND: Historically, local control of recurrent sarcomas has been limited to radiotherapy when surgical re-resection is not feasible. For metastatic carcinomas to the bone or soft tissue, radiotherapy and some interventional radiology treatment along with other systemic therapies have been widely advocated due to the possibility of disseminated disease. These techniques are effective in alleviating pain and achieving local control for some tumor types, but it has not been effective for prolonged local control of most tumors...
October 13, 2016: BMC Cancer
https://www.readbyqxmd.com/read/27733205/erratum-to-surgical-spacer-placement-prior-carbon-ion-radiotherapy-cirt-an-effective-feasible-strategy-to-improve-the-treatment-for-sacral-chordoma
#10
Lorenzo Cobianchi, Andrea Peloso, Barbara Vischioni, Denis Panizza, Maria Rosaria Fiore, Piero Fossati, Viviana Vitolo, Alberto Iannalfi, Mario Ciocca, Silvia Brugnatelli, Tommaso Dominioni, Dario Bugada, Marcello Maestri, Mario Alessiani, Francesca Valvo, Roberto Orecchia, Paolo Dionigi
No abstract text is available yet for this article.
October 12, 2016: World Journal of Surgical Oncology
https://www.readbyqxmd.com/read/27731354/carbon-ion-irradiated-hepatoma-cells-exhibit-coupling-interplay-between-apoptotic-signaling-and-morphological-and-mechanical-remodeling
#11
Baoping Zhang, Long Li, Zhiqiang Li, Yang Liu, Hong Zhang, Jizeng Wang
A apoptotic model was established based on the results of five hepatocellular carcinoma cell (HCC) lines irradiated with carbon ions to investigate the coupling interplay between apoptotic signaling and morphological and mechanical cellular remodeling. The expression levels of key apoptotic proteins and the changes in morphological characteristics and mechanical properties were systematically examined in the irradiated HCC lines. We observed that caspase-3 was activated and that the Bax/Bcl-2 ratio was significantly increased over time...
October 12, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27726113/late-sacral-recurrence-of-rectal-cancer-treated-by-heavy-ion-radiotherapy-a-case-report
#12
Hiroyuki Matsuzaki, Soichiro Ishihara, Kazushige Kawai, Takeshi Nishikawa, Toshiaki Tanaka, Tomomichi Kiyomatsu, Keisuke Hata, Hiroaki Nozawa, Shigeru Yamada, Toshiaki Watanabe
BACKGROUND: The need for surveillance of rare late recurrence of rectal cancer has not yet been established. Local control of unresectable skeletal metastasis is important for palliation of symptoms and support for systemic chemotherapy. CASE PRESENTATION: A Japanese man underwent preoperative pelvic irradiation (50.4 Gy/28 Fr) and low anterior resection at the age of 57 years. The pathological stage was II (T3N0M0). Nine years after the surgery, his carcinoembryonic antigen (CEA) level showed rapid elevation, although he had no symptoms...
December 2016: Surgical Case Reports
https://www.readbyqxmd.com/read/27711237/proteomic-analysis-implicates-dominant-alterations-of-rna-metabolism-and-the-proteasome-pathway-in-the-cellular-response-to-carbon-ion-irradiation
#13
Yu Wang, Hua Guan, Da-Fei Xie, Yi Xie, Xiao-Dan Liu, Qi Wang, Li Sui, Man Song, Hong Zhang, Jianhua Zhou, Ping-Kun Zhou
Radiotherapy with heavy ions is considered advantageous compared to irradiation with photons due to the characteristics of the Braggs peak and the high linear energy transfer (LET) value. To understand the mechanisms of cellular responses to different LET values and dosages of heavy ion radiation, we analyzed the proteomic profiles of mouse embryo fibroblast MEF cells exposed to two doses from different LET values of heavy ion 12C. Total proteins were extracted from these cells and examined by Q Exactive with Liquid Chromatography (LC)-Electrospray Ionization (ESI) Tandem MS (MS/MS)...
2016: PloS One
https://www.readbyqxmd.com/read/27694719/effective-particle-energies-for-stopping-power-calculation-in-radiotherapy-treatment-planning-with-protons-and-helium-carbon-and-oxygen-ions
#14
T Inaniwa, N Kanematsu
The stopping power ratio (SPR) of body tissues relative to water depends on the particle energy. For simplicity, however, most analytical dose planning systems do not account for SPR variation with particle energy along the beam's path, but rather assume a constant energy for SPR estimation. The range error due to this simplification could be indispensable depending on the particle species and the assumed energy. This error can be minimized by assuming a suitable energy referred to as an 'effective energy' in SPR estimation...
October 3, 2016: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/27677663/respiration-gated-fast-rescanning-carbon-ion-radiotherapy
#15
Daniel K Ebner, Hiroshi Tsuji, Shigeo Yasuda, Naoyoshi Yamamoto, Shinichiro Mori, Tadashi Kamada
Phase-controlled rescanning of the carbon-ion beam offers fast and precise dose application with decreased irradiation of normal tissue. However, organ movement with respiration remains a unique challenge. Technological development has enabled the simultaneous application of beam-energy-modulated markerless phase-controlled rescanning with respiration gating, allowing scanning treatment of respiration-mobile tumors with carbon. A total of 10 patients with tumors in the liver or lung were treated in a feasibility study at our facility using this combination...
September 27, 2016: Japanese Journal of Clinical Oncology
https://www.readbyqxmd.com/read/27667884/a-new-silicon-tracker-for-proton-imaging-and-dosimetry
#16
J T Taylor, C Waltham, T Price, N M Allinson, P P Allport, G L Casse, A Kacperek, S Manger, N A Smith, I Tsurin
For many years, silicon micro-strip detectors have been successfully used as tracking detectors for particle and nuclear physics experiments. A new application of this technology is to the field of particle therapy where radiotherapy is carried out by use of charged particles such as protons or carbon ions. Such a treatment has been shown to have advantages over standard x-ray radiotherapy and as a result of this, many new centres offering particle therapy are currently under construction around the world today...
September 21, 2016: Nuclear Instruments & Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
https://www.readbyqxmd.com/read/27666928/the-purine-scaffold-hsp90-inhibitor-pu-h71-sensitizes-cancer-cells-to-heavy-ion-radiation-by-inhibiting-dna-repair-by-homologous-recombination-and-non-homologous-end-joining
#17
Younghyun Lee, Huizi Keiko Li, Aya Masaoka, Shigeaki Sunada, Hirokazu Hirakawa, Akira Fujimori, Jac A Nickoloff, Ryuichi Okayasu
BACKGROUND AND PURPOSE: PU-H71 is a purine-scaffold Hsp90 inhibitor developed to overcome limitations of conventional Hsp90 inhibitors. This study was designed to investigate the combined effect of PU-H71 and heavy ion irradiation on human tumor and normal cells. MATERIALS AND METHODS: The effects of PU-H71 were determined by monitoring cell survival by colony formation, and DNA double-strand break (DSB) repair by γ-H2AX foci and immuno-blotting DSB repair proteins...
October 2016: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/27665739/microrna-mir-374-a-potential-radiosensitizerfor-carbon-ion-beam-radiotherapy
#18
Sung-Jae Baek, Katsutoshi Sato, Naohiro Nishida, Jun Koseki, Rikako Azuma, Koichi Kawamoto, Masamitsu Konno, Kazuhiko Hayashi, Taroh Satoh, Yuichiro Doki, Masaki Mori, Hideshi Ishii, Kazuhiko Ogawa
In this study, we compared the microRNA (miRNA) profiles of a control and X-ray- and carbon ion beam-resistant cells to identify miRNAs that can be used as radiosensitizers and biomarkers. Mouse squamous cell carcinoma line NR-S1, its X-ray-resistant derivative X60, and its carbon ion beam‑resistant derivative C30 were subjected to miRNA microarray analysis. Expression of miRNAs shown to be upregulated or downregulated in the microarray analysis was confirmed by qRT-PCR. Downregulated miRNAs were overexpressed in human pancreatic cancer cell lines PANC1 and MIA PaCa-2, and the resulting cells were tested for radiosensitivity using colony-forming and sphere-forming assays...
September 22, 2016: Oncology Reports
https://www.readbyqxmd.com/read/27639891/benefit-of-particle-therapy-in-re-irradiation-of-head-and-neck-patients-results-of-a-multicentric-in-silico-rococo-trial
#19
Daniëlle B P Eekers, Erik Roelofs, Urszula Jelen, Maura Kirk, Marlies Granzier, Filippo Ammazzalorso, Peter H Ahn, Geert O R J Janssens, Frank J P Hoebers, Tobias Friedmann, Timothy Solberg, Sean Walsh, Esther G C Troost, Johannes H A M Kaanders, Philippe Lambin
BACKGROUND AND PURPOSE: In this multicentric in silico trial we compared photon, proton, and carbon-ion radiotherapy plans for re-irradiation of patients with squamous cell carcinoma of the head and neck (HNSCC) regarding dose to tumour and doses to surrounding organs at risk (OARs). MATERIAL AND METHODS: Twenty-five HNSCC patients with a second new or recurrent cancer after previous irradiation (70Gy) were included. Intensity-modulated proton therapy (IMPT) and ion therapy (IMIT) re-irradiation plans to a second subsequent dose of 70Gy were compared to photon therapy delivered with volumetric modulated arc therapy (VMAT)...
September 14, 2016: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/27637859/clustered-double-strand-breaks-in-heterochromatin-perturb-dna-repair-after-high-linear-energy-transfer-irradiation
#20
Yvonne Lorat, Sara Timm, Burkhard Jakob, Gisela Taucher-Scholz, Claudia E Rübe
BACKGROUND AND PURPOSE: High linear energy transfer (LET) radiotherapy offers superior dose conformity and biological effectiveness compared with low-LET radiotherapy, representing a promising alternative for radioresistant tumours. A prevailing hypothesis is that energy deposition along the high-LET particle trajectories induces DNA lesions that are more complex and clustered and therefore more challenging to repair. The precise molecular mechanisms underlying the differences in radiobiological effects between high-LET and low-LET radiotherapies remain unclear...
September 13, 2016: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
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