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https://www.readbyqxmd.com/read/29243669/simultaneous-tumor-and-surrogate-motion-tracking-with-dynamic-mri-for-radiation-therapy-planning
#1
Seyoun Park, Rana Farah, Steven M Shea, Erik J Tryggestad, Russell Hales, Junghoon Lee
Respiration-induced tumor motion is a major obstacle for achieving high-precision radiotherapy of cancers in the thoracic and abdominal regions. Surrogate-based estimation and tracking methods are commonly used in radiotherapy, but with limited understanding of quantified correlation to tumor motion. In this study, we propose a method to simultaneously track the lung tumor and external surrogates to evaluate their spatial correlation in a quantitative way using dynamic MRI, which allows real-time acquisition without ionizing radiation exposure...
December 15, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/29237164/mir-124-inhibits-growth-and-enhances-radiation-induced-apoptosis-in-non-small-cell-lung-cancer-by-inhibiting-stat3
#2
Mengjie Wang, Bi Meng, Yangchen Liu, Jingwen Yu, Qiaoyun Chen, Yangchen Liu
BACKGROUND/AIMS: A growing body of evidence indicates that the abnormal expression of microRNAs (miRNAs) play an important role in sensitizing the cellular response to ionizing radiation (IR). The aim of this study was to investigate whether the expression of miR-124 correlated with radiosensitivity in the context of non-small-cell lung carcinoma (NSCLC). METHODS: Quantitative reverse transcription polymerase chain reaction (RT-PCR) was used to quantify miR-124 expression in NSCLC tissues and cell lines...
December 11, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29235457/serum-metabolic-profile-alteration-reveals-response-to-platinum-based-combination-chemotherapy-for-lung-cancer-sensitive-patients-distinguished-from-insensitive-ones
#3
Shan Xu, Yanping Zhou, Hui Geng, Dandan Song, Jing Tang, Xianmin Zhu, Di Yu, Sheng Hu, Yanfang Cui
Most lung cancers are diagnosed at fairly advanced stages due to limited clinical symptoms. Platinum-based chemotherapy, either as single regimen or in combination with radiation, is one of the major recommendations for the patients. Earlier evaluation of the effectiveness of the chemotherapies is critical for developing better treatment plan given the toxicity of the chemotherapeutic reagents. Drug efficacy could be reflected in the systemic metabolism characteristics though knowledge about which remains scarce...
December 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29233523/stereotactic-body-radiation-therapy-for-stage-i-non-small-cell-lung-cancer-the-importance-of-treatment-planning-algorithm-and-evaluation-of-a-tumor-control-probability-model
#4
Nitin Ohri, Wolfgang Tomé, Shalom Kalnicki, Madhur Garg
BACKGROUND: Stereotactic body radiation therapy (SBRT) is increasingly used to treat early-stage non-small cell lung cancer (NSCLC). A previous report introduced the term size-adjusted biologically effective dose (sBED), which accounts for tumor diameter and biologically effective dose (BED) and may be used to predict the likelihood of local control following SBRT. Here we seek to replicate those findings using a separate dataset. METHODS AND MATERIALS: We queried the RSSearch Patient Registry for patients treated with SBRT for stage I NSCLC...
October 7, 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/29230121/leptomeningeal-disease-and-the-evolving-role-of-molecular-targeted-therapy-and-immunotherapy
#5
REVIEW
Katharine Hall Thomas, Robert A Ramirez
Background: Leptomeningeal disease (LMD) is a complication that results from solid tumor metastasis. Prognosis is extremely poor. As therapeutic options for solid tumors improve, the rate of LMD continues to increase. Until recently, treatment has been limited to radiation therapy, intrathecal chemotherapy, and systemic chemotherapy, with an overall survival of 2-3 months. Targeted molecular therapy and immunotherapies are promising new options for increasing overall survival and clinical improvement; however, optimal clinical management remains unknown...
2017: Ochsner Journal
https://www.readbyqxmd.com/read/29228994/survival-and-prognostic-factors-of-non-small-cell-lung-cancer-patients-with-postoperative-locoregional-recurrence-treated-with-radical-radiotherapy
#6
Li Ma, Bo Qiu, Jun Zhang, Qi-Wen Li, Bin Wang, Xu-Hui Zhang, Meng-Yun Qiang, Zhao-Lin Chen, Su-Ping Guo, Hui Liu
BACKGROUND: Locoregional recurrence remains the challenge for long-term survival of non-small cell lung cancer (NSCLC) patients after radical surgery, and curative-intent radiotherapy could be a treatment choice. This study aimed to assess the survival and prognostic factors of patients with postoperative locoregionally recurrent NSCLC treated with radical radiotherapy. METHODS: We reviewed medical records of 74 NSCLC patients with postoperative locoregional recurrence who received radical radiotherapy between April 2012 and February 2016 at Sun Yat-sen University Cancer Center (Guangzhou, China)...
December 11, 2017: Chinese Journal of Cancer
https://www.readbyqxmd.com/read/29228638/thoracic-radiation-induced-pleural-effusion-and-risk-factors-in-patients-with-lung-cancer
#7
Jing Zhao, Regina M Day, Jian-Yue Jin, Leslie Quint, Hadyn Williams, Catherine Ferguson, Li Yan, Maurice King, Ahmad Albsheer, Martha Matuszak, Feng-Ming Spring Kong
The risk factors and potential practice implications of radiation-induced pleural effusion (RIPE) are undefined. This study examined lung cancer patients treated with thoracic radiation therapy (TRT) having follow-up computed tomography (CT) or 18F-fluorodeoxyglucose (FDG) positron emission tomography (PET)/CT. Increased volumes of pleural effusion after TRT without evidence of tumor progression was considered RIPE. Parameters of lung dose-volume histogram including percent volumes irradiated with 5-55 Gy (V5-V55) and mean lung dose (MLD) were analyzed by receiver operating characteristic analysis...
November 14, 2017: Oncotarget
https://www.readbyqxmd.com/read/29223168/serious-gastric-perforation-after-second-stereotactic-body-radiotherapy-for-peripheral-lung-cancer-that-recurred-after-initial-stereotactic-body-radiotherapy-a-case-report
#8
Hotaka Nonaka, Hiroshi Onishi, Masatoki Ozaki, Kengo Kuriyama, Takafumi Komiyama, Ryo Saito
BACKGROUND: In recent reports, re-irradiation with stereotactic body radiotherapy for lung tumors in patients previously treated with thoracic radiation therapy resulted in several serious toxicities. Serious non-lung toxicities were observed mostly in patients with central tumors, but we experienced a case of fatal gastric perforation after a second stereotactic body radiotherapy in a patient with a peripheral lung tumor. CASE PRESENTATION: An 83-year-old Asian man was diagnosed with T2N0M0 lung cancer in the form of squamous cell carcinoma in the lower lobe of his left lung...
December 10, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/29221676/prospective-medical-analysis-of-radiation-therapist-image-repositioning-during-image-guided-radiotherapy
#9
O Lauche, F Castan, H de Forges, C Guillaumon, S Gourgou, P Fenoglietto, N Aillères, D Azria, O Riou
PURPOSE: Radiation oncologists are responsible for deciding which day-to-day variations are acceptable or not in the treatment setup. However, properly qualified and trained radiation therapists might be capable to perform image registration. We evaluated in our centre the capability and accuracy of radiation therapists to validate positioning images in a prospective study. METHODS AND PATIENTS: A total of 84 patients treated for prostate, head and neck, lung or breast cancer was prospectively and randomly included from July 2011 to July 2013 in radiotherapy unit of our institution...
December 5, 2017: Cancer Radiothérapie: Journal de la Société Française de Radiothérapie Oncologique
https://www.readbyqxmd.com/read/29221323/management-of-non-small-cell-lung-cancer-with-egfr-mutation-the-role-of-radiotherapy-in-the-era-of-tyrosine-kinase-inhibitor-therapy-opportunities-and-challenges
#10
REVIEW
Bing Xia, Shirong Zhang, Shenglin Ma
In recent years, the treatment of advanced non-small cell lung cancer (NSCLC) was greatly promoted by the discovery of oncogenic drivers and the development of targeted therapies specific for these drivers. Somatic mutations in epidermal growth factor receptor (EGFR) are the most common type in patients with NSCLC. Small-molecule tyrosine kinase inhibitor (TKI) targeting EGFR produced relatively high response rate and long duration with acceptable toxicity profile. Also, the life expectancy in patients with active EGFR mutation has been significantly prolonged than the past...
September 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/29221291/airway-stenting-in-patients-requiring-intubation-due-to-malignant-airway-stenosis-a-10-year-experience
#11
Masahide Oki, Hideo Saka, Kazumi Hori
Background: Critically ill patients with severe acute respiratory failure due to malignant airway stenosis often require emergency intubation and mechanical ventilation. Urgent intervention is necessary for the survival of such patients. The aim of this study was to determine the efficacy and outcomes of airway stenting in patients with malignant airway stenosis requiring emergency intubation. Methods: Patients with malignant airway stenosis who underwent emergency intubation prior to airway stent placement from September 2005 to September 2015 in a single center were retrospectively reviewed...
September 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/29221282/induction-chemoradiotherapy-using-docetaxel-and-cisplatin-with-definitive-dose-radiation-followed-by-surgery-for-locally-advanced-non-small-cell-lung-cancer
#12
Hidejiro Torigoe, Junichi Soh, Shuta Tomida, Kei Namba, Hiroki Sato, Kuniaki Katsui, Katsuyuki Hotta, Kazuhiko Shien, Hiromasa Yamamoto, Masaomi Yamane, Susumu Kanazawa, Katsuyuki Kiura, Shinichiro Miyoshi, Shinichi Toyooka
Background: Induction chemoradiotherapy (CRT) followed by surgery is a therapeutic option for locally advanced non-small cell lung cancer (LA-NSCLC). Typically, around 40-50 Gy of radiation is applied as the induction-dose; however, a definitive-dose (DD) of radiation (60 Gy or higher) is occasionally applied to increase local control. We investigated the impact of induction CRT with DD radiation in LA-NSCLC patients treated with a single regimen of docetaxel and cisplatin. Methods: We reviewed 110 patients with LA-NSCLC who underwent induction CRT followed by surgery using a single regimen (docetaxel and cisplatin) between January 1999 and December 2014 at our hospital...
September 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/29220828/prediction-of-radiation-esophagitis-in-non-small-cell-lung-cancer-using-clinical-factors-dosimetric-parameters-and-pretreatment-cytokine-levels
#13
Peter G Hawkins, Philip S Boonstra, Stephen T Hobson, James A Hayman, Randall K Ten Haken, Martha M Matuszak, Paul Stanton, Gregory P Kalemkerian, Theodore S Lawrence, Matthew J Schipper, Feng-Ming Spring Kong, Shruti Jolly
Radiation esophagitis (RE) is a common adverse event associated with radiotherapy for non-small cell lung cancer (NSCLC). While plasma cytokine levels have been correlated with other forms of radiation-induced toxicity, their association with RE has been less well studied. We analyzed data from 126 patients treated on 4 prospective clinical trials. Logistic regression models based on combinations of dosimetric factors [maximum dose to 2 cubic cm (D2cc) and generalized equivalent uniform dose (gEUD)], clinical variables, and pretreatment plasma levels of 30 cytokines were developed...
December 5, 2017: Translational Oncology
https://www.readbyqxmd.com/read/29218678/low-dose-ct-for-lung-cancer-screening-opportunities-and-challenges
#14
Hongbing Shen
Lung cancer is among the most frequently diagnosed cancers worldwide and the leading cause of cancer death in both males and females. Screening for lung cancer coupled with earlier intervention has long been studied as an approach to mortality reduction. However, minimal progress was achieved until recently, when lowdose spiral computed tomography (LDCT) screening demonstrated a 20% reduction in mortality from lung cancer in a randomized controlled trial (RCT), the National Lung Screening Trial, from the United States...
December 7, 2017: Frontiers of Medicine
https://www.readbyqxmd.com/read/29218271/magnetic-resonance-imaging-in-precision-radiation-therapy-for-lung-cancer
#15
REVIEW
Hannah Bainbridge, Ahmed Salem, Rob H N Tijssen, Michael Dubec, Andreas Wetscherek, Corinne Van Es, Jose Belderbos, Corinne Faivre-Finn, Fiona McDonald
Radiotherapy remains the cornerstone of curative treatment for inoperable locally advanced lung cancer, given concomitantly with platinum-based chemotherapy. With poor overall survival, research efforts continue to explore whether integration of advanced radiation techniques will assist safe treatment intensification with the potential for improving outcomes. One advance is the integration of magnetic resonance imaging (MRI) in the treatment pathway, providing anatomical and functional information with excellent soft tissue contrast without exposure of the patient to radiation...
December 2017: Translational Lung Cancer Research
https://www.readbyqxmd.com/read/29218270/anatomic-functional-and-molecular-imaging-in-lung-cancer-precision-radiation-therapy-treatment-response-assessment-and-radiation-therapy-personalization
#16
REVIEW
Michael MacManus, Sarah Everitt, Tanja Schimek-Jasch, X Allen Li, Ursula Nestle, Feng-Ming Spring Kong
This article reviews key imaging modalities for lung cancer patients treated with radiation therapy (RT) and considers their actual or potential contributions to critical decision-making. An international group of researchers with expertise in imaging in lung cancer patients treated with RT considered the relevant literature on modalities, including computed tomography (CT), magnetic resonance imaging (MRI) and positron emission tomography (PET). These perspectives were coordinated to summarize the current status of imaging in lung cancer and flag developments with future implications...
December 2017: Translational Lung Cancer Research
https://www.readbyqxmd.com/read/29218269/blood-based-biomarkers-for-precision-medicine-in-lung-cancer-precision-radiation-therapy
#17
REVIEW
Dirk De Ruysscher, Jianyue Jin, Tim Lautenschlaeger, Jin-Xiong She, Zhongxing Liao, Feng-Ming Spring Kong
Both tumors and patients are complex and models that determine survival and toxicity of radiotherapy or any other treatment ideally must take into account this variability as well as its dynamic state. The genetic features of the tumor and the host, and increasingly also the epi-genetic and proteomic characteristics, are being unraveled. Multiple techniques, including histological examination, blood sampling, measurement of circulating tumor cells (CTCs), and functional and molecular imaging, can be used for this purpose...
December 2017: Translational Lung Cancer Research
https://www.readbyqxmd.com/read/29218267/radiomics-in-precision-medicine-for-lung-cancer
#18
REVIEW
Julie Constanzo, Lise Wei, Huan-Hsin Tseng, Issam El Naqa
With the improvement of external radiotherapy delivery accuracy, such as intensity-modulated and stereotactic body radiation therapy, radiation oncology has recently entered in the era of precision medicine. Despite these precise irradiation modalities, lung cancers remain one of the most aggressive human cancers worldwide, possibly because of diverse genotypic alterations that drive and maintain lung tumorigenesis. It has been long recognized that imaging could aid in the diagnosis, tumor delineation, and monitoring of lung cancer...
December 2017: Translational Lung Cancer Research
https://www.readbyqxmd.com/read/29218264/role-of-pet-ct-for-precision-medicine-in-lung-cancer-perspective-of-the-society-of-nuclear-medicine-and-molecular-imaging
#19
Bennett S Greenspan
This article discusses the role of PET/CT in contributing to precision medicine in lung cancer, and provides the perspective of the Society of Nuclear Medicine and Molecular Imaging (SNMMI) on this process. The mission and vision of SNMMI are listed, along with the guidance provided by SNMMI to promote best practice in precision medicine. Basic principles of PET/CT are presented. An overview of the use of PET/CT imaging in lung cancer is discussed. In lung cancer patients, PET/CT is vitally important for optimal patient management...
December 2017: Translational Lung Cancer Research
https://www.readbyqxmd.com/read/29217849/life-time-dosimetric-assessment-for-mice-and-rats-exposed-in-reverberation-chambers-of-the-2-year-ntp-cancer-bioassay-study-on-cell-phone-radiation
#20
Yijian Gong, Myles Capstick, Sven Kuehn, Perry Wilson, John Ladbury, Galen Koepke, David L McCormick, Ronald L Melnick, Niels Kuster
In this paper, we present the detailed life-time dosimetry analysis for rodents exposed in the reverberation exposure system designed for the two-year cancer bioassay study conducted by the National Toxicology Program of the National Institute of Environmental Health Sciences. The study required the well-controlled and characterized exposure of individually housed, unrestrained mice at 1900 MHz and rats at 900 MHz, frequencies chosen to give best uniformity exposure of organs and tissues. The wbSAR, the peak spatial SAR and the organ specific SAR as well as the uncertainty and variation due to the exposure environment, differences in the growth rates, and animal posture were assessed...
December 2017: IEEE Transactions on Electromagnetic Compatibility
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