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Carbon ion radiotherapy

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https://www.readbyqxmd.com/read/29757472/technical-note-predicting-dose-distribution-with-replacing-stopping-power-ratio-for-inter-fractional-motion-and-intra-fractional-motion-during-carbon-ion-radiotherapy-with-passive-irradiation-method-for-stage-i-lung-cancer
#1
Yoshiki Kubota, Makoto Sakai, Mutsumi Tashiro, Jun-Ichi Saitoh, Takanori Abe, Tatsuya Ohno, Takashi Nakano
PURPOSE: We designed and evaluated a simple method for predicting the effects of intra-fractional and/or inter-fractional motion on dose distribution during carbon ion radiotherapy (CIRT) for solitary-lesion stage I lung cancer. METHODS: The proposed method uses computed tomography (CT) images from treatment planning and intra-tumoral and/or inter-tumoral displacement. The predicted dose distribution (PDD) was calculated by replacing the current tumor region with the stopping power ratio (SPR) of the lung, and replacing the moved tumor region with the SPR of the tumor...
May 14, 2018: Medical Physics
https://www.readbyqxmd.com/read/29740097/impact-of-18-f-fet-pet-on-target-volume-definition-and-tumor-progression-of-recurrent-high-grade-glioma-treated-with-carbon-ion-radiotherapy
#2
Charlotte Debus, Maria Waltenberger, Ralf Floca, Ali Afshar-Oromieh, Nina Bougatf, Sebastian Adeberg, Sabine Heiland, Martin Bendszus, Wolfgang Wick, Stefan Rieken, Uwe Haberkorn, Jürgen Debus, Maximilian Knoll, Amir Abdollahi
High-precision radiotherapy (HPR) of recurrent high grade glioma (HGG) requires accurate spatial allocation of these infiltrative tumors. We investigated the impact of 18 F-FET PET on tumor delineation and progression of recurrent HGG after HPR with carbon ions. T1 contrast enhanced MRI and 18 F-FET-PET scans of 26 HGG patients were fused with radiotherapy planning volumes. PET-positive (PET+) tumor volumes using different isocontours (I%) were systematically investigated and compared with MRI-derived gross tumor volumes (GTV)...
May 8, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29739417/evaluation-of-particle-radiotherapy-for-the-re-irradiation-of-recurrent-intracranial-meningioma
#3
Rami A El Shafie, Maja Czech, Kerstin A Kessel, Daniel Habermehl, Dorothea Weber, Stefan Rieken, Nina Bougatf, Oliver Jäkel, Jürgen Debus, Stephanie E Combs
BACKGROUND: With the advance of modern irradiation techniques, the role of radiotherapy (RT) for intracranial meningioma has increased significantly throughout the past years. Despite that tumor's generally favorable outcome with local control rates of up to 90% after ten years, progression after RT does occur. In those cases, re-irradiation is often difficult due to the limited radiation tolerance of the surrounding tissue. The aim of this analysis is to determine the value of particle therapy with its better dose conformity and higher biological efficacy for re-irradiating recurrent intracranial meningioma...
May 8, 2018: Radiation Oncology
https://www.readbyqxmd.com/read/29699921/monte-carlo-study-of-out-of-field-exposure-in-carbon-ion-radiotherapy-with-a-passive-beam-organ-doses-in-prostate-cancer-treatment
#4
Shunsuke Yonai, Naruhiro Matsufuji, Keiichi Akahane
PURPOSE: The aim of this work was to estimate typical dose equivalents to out-of-field organs during carbon-ion radiotherapy (CIRT) with a passive beam for prostate cancer treatment. Additionally, sensitivity analyses of organ doses for various beam parameters and phantom sizes were performed. METHODS: Because the CIRT out-of-field dose depends on the beam parameters, the typical values of those parameters were determined from statistical data on the target properties of patients who received CIRT at the Heavy-Ion Medical Accelerator in Chiba (HIMAC)...
April 23, 2018: Physica Medica: PM
https://www.readbyqxmd.com/read/29689442/ameliorating-mitochondrial-dysfunction-restores-carbon-ion-induced-cognitive-deficits-via-co-activation-of-nrf2-and-pink1-signaling-pathway
#5
Yang Liu, Jiawei Yan, Cao Sun, Guo Li, Sirui Li, Luwei Zhang, Cuixia Di, Lu Gan, Yupei Wang, Rong Zhou, Jing Si, Hong Zhang
Carbon ion therapy is a promising modality in radiotherapy to treat tumors, however, a potential risk of induction of late normal tissue damage should still be investigated and protected. The aim of the present study was to explore the long-term cognitive deficits provoked by a high-linear energy transfer (high-LET) carbon ions in mice by targeting to hippocampus which plays a crucial role in memory and learning. Our data showed that, one month after 4 Gy carbon ion exposure, carbon ion irradiation conspicuously resulted in the impaired cognitive performance, neurodegeneration and neuronal cell death, as well as the reduced mitochondrial integrity, the disrupted activities of tricarboxylic acid cycle flux and electron transport chain, and the depressed antioxidant defense system, consequently leading to a decline of ATP production and persistent oxidative damage in the hippocampus region...
April 14, 2018: Redox Biology
https://www.readbyqxmd.com/read/29685705/genistein-sensitizes-glioblastoma-cells-to-carbon-ions-via-inhibiting-dna-pkcs-phosphorylation-and-subsequently-repressing-nhej-and-delaying-hr-repair-pathways
#6
Xiongxiong Liu, Ping Li, Ryoichi Hirayama, Yuzhen Niu, Xinguo Liu, Weiqiang Chen, Xiaodong Jin, Pengcheng Zhang, Fei Ye, Ting Zhao, Bingtao Liu, Qiang Li
BACKGROUND AND PURPOSE: Previously, we found genistein could sensitize cancer cells to low linear energy transfer (LET) X-rays via inhibiting DNA-PKcs activities. Especially, high-LET heavy ion produces more DNA double strand breaks (DSBs) than low-LET radiation. Thus, the study was designed to investigate the detailed molecular mechanisms of genistein on sensitizing cancer cells to heavy ions. MATERIALS AND METHODS: Human glioblastoma (GBM) cell lines with or without genistein pre-treatment were irradiated with high-LET carbon ions...
April 20, 2018: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/29618938/bimodality-treatment-of-patients-with-pelvic-adenoid-cystic-carcinoma-with-photon-intensity-modulated-radiotherapy-plus-carbon-ion-boost-a-case-series
#7
Denise Bernhardt, Florian Sterzing, Sebastian Adeberg, Klaus Herfarth, Sonja Katayama, Robert Foerster, Juliane Hoerner-Rieber, Laila König, Juergen Debus, Stefan Rieken
Background: Treatment of patients with pelvic adenoid cystic carcinoma (ACC) remains a challenge owing to the rarity of the disease, the lack of data, and the relative radioresistance of these tumors. Case reports: This case series presents the results of three patients with recurrent or inoperable pelvic ACC treated with intensity-modulated radiotherapy (IMRT) plus carbon ion (C12) boost. Patients received C12 therapy at a dose of 3 Gray equivalents (GyE) (relative biological effectiveness [RBE]) per fraction up to 24 GyE RBE, followed by 50 GyE of photon IMRT in 25 fractions...
2018: Cancer Management and Research
https://www.readbyqxmd.com/read/29609813/metallic-nanoparticle-radiosensitisation-of-ion-radiotherapy-a-review
#8
REVIEW
Dylan Peukert, Ivan Kempson, Michael Douglass, Eva Bezak
The use of gold nanoparticle (GNP) and other metal nanoparticle (MNP) radiosensitisers to enhance radiotherapy offers the potential of improved treatment outcomes. Originally intended for use with X-ray therapy, the possibility of enhanced hadron therapy is desirable due to the superior sparing of healthy tissue in hadron therapy compared to conventional X-ray therapy. While MNPs were not expected to be effective radiosensitisers for hadron therapy due to the limited Z dependence of interactions, recent experimental measurements have contradicted this expectation...
March 2018: Physica Medica: PM
https://www.readbyqxmd.com/read/29594936/correction-to-estimation-of-linear-energy-transfer-distribution-for-broad-beam-carbon-ion-radiotherapy-at-the-national-institute-of-radiological-sciences-japan
#9
Nobuyuki Kanematsu, Naruhiro Matsufuji, Taku Inaniwa
The original version of this article unfortunately contained a mistake. Figure 2 was published with fake signals in panels (a) and (b) which are corrected in this Erratum. The authors are not responsible for this procedural lapse.
March 28, 2018: Radiological Physics and Technology
https://www.readbyqxmd.com/read/29594233/uptake-of-prostate-specific-membrane-antigen-psma-in-adenoid-cystic-carcinoma-is-psma-pet-ct-a-helpful-tool-in-radiation-oncology
#10
Laila König, Henrik Hauswald, Christa Flechtenmacher, Martina Heller, Jürgen Debus, Uwe Haberkorn, Clemens Kratochwil, Frederik Giesel
This case report shows the high PSMA-uptake in a patient with an adenoid cystic carcinoma of the maxillary sinus. Due to the intense ligand-uptake additional information for target volume delineation was obtained and the Treatment plan for bimodal radiotherapy with carbon ions was adapted accordingly.
December 2017: Clinical and Translational Radiation Oncology
https://www.readbyqxmd.com/read/29587795/clinical-outcome-after-particle-therapy-for-meningiomas-of-the-skull-base-toxicity-and-local-control-in-patients-treated-with-active-rasterscanning
#11
Rami A El Shafie, Maja Czech, Kerstin A Kessel, Daniel Habermehl, Dorothea Weber, Stefan Rieken, Nina Bougatf, Oliver Jäkel, Jürgen Debus, Stephanie E Combs
BACKGROUND: Meningiomas of the skull base account for 25-30% of all meningiomas. Due to the complex structure of the cranial base and its close proximity to critical structures, surgery is often associated with substantial morbidity. Treatment options include observation, aggressive surgical intervention, stereotactic or conventional radiotherapy. In this analysis we evaluate the outcome of 110 patients with meningiomas of the skull base treated with particle therapy. It was performed within the framework of the "clinical research group heavy ion therapy" and supported by the German Research Council (DFG, KFO 214)...
March 27, 2018: Radiation Oncology
https://www.readbyqxmd.com/read/29579324/salvage-treatment-using-carbon-ion-radiation-in-patients-with-locoregionally-recurrent-nasopharyngeal-carcinoma-initial-results
#12
Jiyi Hu, Cihang Bao, Jing Gao, Xiyin Guan, Weixu Hu, Jing Yang, Chaosu Hu, Lin Kong, Jiade J Lu
BACKGROUND: Reirradiation for locoregionally recurrent nasopharyngeal carcinoma (NPC) after a definitive dose of radiotherapy (RT) is challenging and usually associated with severe toxicities. Intensity-modulated carbon ion RT (IMCT) offers physical/biologic advantages over photon-based intensity-modulated RT. Herein, the authors report their initial experience of IMCT in previously irradiated patients with locoregionally recurrent NPC. METHODS: Patients with locoregionally recurrent, poorly differentiated or undifferentiated NPC who underwent salvage therapy with IMCT at the Shanghai Proton and Heavy Ion Center between May 2015 and August 2017 were included in the current study...
March 26, 2018: Cancer
https://www.readbyqxmd.com/read/29560121/efficacy-and-safety-of-carbon-ion-radiotherapy-for-lacrimal-gland-carcinomas-with-extraorbital-extension-a-retrospective-cohort-study
#13
Kazuhiko Hayashi, Masashi Koto, Hiroaki Ikawa, Kazuhiko Ogawa, Tadashi Kamada
Purpose: To evaluate the efficacy and safety of carbon-ion radiotherapy (CIRT) for patients with lacrimal gland carcinomas (LGCs) with extraorbital extension. Results: The median follow-up period was 53.7 months. The 5-year local control and overall survival rates were 62% and 65%, respectively. Regarding late toxicities, 12 patients (36.4%) developed Grade 4 optic nerve disorders, including visual losses of the diseased side ( N = 8; 66.7%), and 1 patient (3.0%) developed a Grade 3 optic nerve disorder...
February 27, 2018: Oncotarget
https://www.readbyqxmd.com/read/29547526/stereotactic-radiotherapy-and-particle-therapy-for-pancreatic-cancer
#14
REVIEW
Sweet Ping Ng, Joseph M Herman
Pancreatic cancer is a devastating disease with poor survival outcomes. Recent studies have shown that the addition of radiotherapy to chemotherapy in the setting of locally advanced pancreatic cancer did not improve overall survival outcome. These studies commonly utilize conventional radiotherapy treatment fractionation and technique (typically 3-D conformal radiotherapy or intensity modulated radiotherapy). Although no clear benefit in overall survival was demonstrated in those studies, those who received radiotherapy did have a clear benefit in terms of local control...
March 16, 2018: Cancers
https://www.readbyqxmd.com/read/29545019/photons-protons-or-carbon-ions-for-stage-i-non-small-cell-lung-cancer-results-of-the-multicentric-rococo-in-silico-study
#15
Krista C J Wink, Erik Roelofs, Charles B Simone, David Dechambre, Alina Santiago, Judith van der Stoep, Wim Dries, Julia Smits, Stephen Avery, Filippo Ammazzalorso, Nicolas Jansen, Urszula Jelen, Timothy Solberg, Dirk de Ruysscher, Esther G C Troost
PURPOSE: To compare dose to organs at risk (OARs) and dose-escalation possibility for 24 stage I non-small cell lung cancer (NSCLC) patients in a ROCOCO (Radiation Oncology Collaborative Comparison) trial. METHODS: For each patient, 3 photon plans [Intensity-modulated radiotherapy (IMRT), volumetric modulated arc therapy (VMAT) and CyberKnife], a double scattered proton (DSP) and an intensity-modulated carbon-ion (IMIT) therapy plan were created. Dose prescription was 60 Gy (equivalent) in 8 fractions...
March 12, 2018: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/29529229/present-developments-in-reaching-an-international-consensus-for-a-model-based-approach-to-particle-beam-therapy
#16
Anussara Prayongrat, Kikuo Umegaki, Arjen van der Schaaf, Albert C Koong, Steven H Lin, Thomas Whitaker, Todd McNutt, Naruhiro Matsufuji, Edward Graves, Masahiko Mizuta, Kazuhiko Ogawa, Hiroyuki Date, Kensuke Moriwaki, Yoichi M Ito, Keiji Kobashi, Yasuhiro Dekura, Shinichi Shimizu, Hiroki Shirato
Particle beam therapy (PBT), including proton and carbon ion therapy, is an emerging innovative treatment for cancer patients. Due to the high cost of and limited access to treatment, meticulous selection of patients who would benefit most from PBT, when compared with standard X-ray therapy (XRT), is necessary. Due to the cost and labor involved in randomized controlled trials, the model-based approach (MBA) is used as an alternative means of establishing scientific evidence in medicine, and it can be improved continuously...
February 24, 2018: Journal of Radiation Research
https://www.readbyqxmd.com/read/29528425/selection-of-carbon-beam-therapy-biophysical-models-of-carbon-beam-therapy
#17
Naruhiro Matsufuji
Variation in the relative biological effectiveness (RBE) within the irradiation field of a carbon beam makes carbon-ion radiotherapy unique and advantageous in delivering the therapeutic dose to a deep-seated tumor, while sparing surrounding normal tissues. However, it is crucial to consider the RBE, not only in designing the dose distribution during treatment planning, but also in analyzing the clinical response retrospectively. At the National Institute of Radiological Sciences, the RBE model was established based on the response of human salivary gland cells...
March 8, 2018: Journal of Radiation Research
https://www.readbyqxmd.com/read/29528414/carbon-ion-radiotherapy-for-inoperable-endometrial-carcinoma
#18
Daisuke Irie, Noriyuki Okonogi, Masaru Wakatsuki, Shingo Kato, Tatsuya Ohno, Kumiko Karasawa, Hiroki Kiyohara, Daijiro Kobayashi, Hiroshi Tsuji, Takashi Nakano, Tadashi Kamada, Makio Shozu
This is a pooled analysis to evaluate the toxicity and efficacy of carbon-ion radiotherapy (C-ion RT) for inoperable endometrial carcinoma. Eligible patients had previously untreated Stage I-III endometrial carcinoma without para-aortic lymph node metastasis. Total dose to the tumor was 62.4-74.4 Gy [relative biological effectiveness (RBE)] in 20 fractions, and the dose to the gastrointestinal tract was limited to <60 Gy (RBE). Intracavitary brachytherapy was not combined in the present study. Fourteen patients with endometrial carcinoma were analyzed...
March 8, 2018: Journal of Radiation Research
https://www.readbyqxmd.com/read/29525808/effects-of-12c6-heavy-ion-radiation-on-dendritic-cells-function
#19
Pei Zhang, Xuguang Hu, Bin Liu, Zhe Liu, Cong Liu, Jianming Cai, Fu Gao, Jianguo Cui, Bailong Li, Yanyong Yang
BACKGROUND Carbon ion radiotherapy has been shown to be more effective in cancer radiotherapy than photon irradiation. Influence of carbon ion radiation on cancer microenvironment is very important for the outcomes of radiotherapy. Tumor-infiltrating dendritic cells (DCs) play critical roles in cancer antigen processing and antitumor immunity. However, there is scant literature covering the effects of carbon ion radiation on DCs. In this study, we aimed to uncover the impact of carbon ion irradiation on bone marrow derived DCs...
March 11, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29516984/investigation-of-the-dose-perturbation-effect-for-therapeutic-beams-with-the-presence-of-a-1-5-t-transverse-magnetic-field-in-magnetic-resonance-imaging-guided-radiotherapy
#20
Wencheng Shao, Xiaobin Tang, Yanling Bai, Diyun Shu, Changran Geng, Chunhui Gong, Fada Guan
Background: Magnetic resonance imaging (MRI)-guided radiotherapy is a promising image-guided cancer radiotherapy method. For MRI-guided radiotherapy, the proper energy of a therapeutic beam is important for beam-designing processes, and the magnetic-induced dose perturbation would be mainly influenced, especially the perturbation surrounding the tissue-air or air-tissue interfaces. Thus, it was necessary to investigate the impact of beam energy from photon, proton, and carbon ion beams on the magnetic-induced dose perturbations...
January 2018: Journal of Cancer Research and Therapeutics
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