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https://www.readbyqxmd.com/read/28222973/nationwide-multi-institutional-retrospective-analysis-of-high-dose-rate-brachytherapy-combined-with-external-beam-radiotherapy-for-localized-prostate-cancer-an-asian-prostate-hdr-bt-consortium
#1
Hiromichi Ishiyama, Nobuhiko Kamitani, Hidemasa Kawamura, Shingo Kato, Manabu Aoki, Shinji Kariya, Taisei Matsumura, Motoki Kaidu, Ken Yoshida, Yaichiro Hashimoto, Yasutaka Noda, Keith H C Lim, Takatsugu Kawase, Takeo Takahashi, Koji Inaba, Motoyasu Kumano, Nobuhiko Yoshikawa, Yasuo Yoshioka, Katsumasa Nakamura, Junichi Hiratsuka, Jun Itami, Kazushige Hayakawa
PURPOSE: To report outcomes and risk factors of high-dose-rate (HDR) brachytherapy combined with external beam radiotherapy with or without androgen deprivation therapy (ADT) in prostate cancer patients. MATERIALS AND METHODS: This multi-institutional retrospective analysis comprised 3424 patients with localized prostate cancer at 16 Asian hospitals. One-thirds (27.7%) of patients received only neoadjuvant ADT, whereas almost half (49.5%) of patients received both neoadjuvant and adjuvant ADT...
February 17, 2017: Brachytherapy
https://www.readbyqxmd.com/read/28222069/patients-perceptions-of-the-negative-effects-following-different-prostate-cancer-treatments-and-the-impact-on-psychological-well-being-a-nationwide-survey
#2
Ulla-Sisko Lehto, Heli Tenhola, Kimmo Taari, Arpo Aromaa
BACKGROUND: Although the prognosis of localised prostate cancer is good, the negative effects of prostate cancer treatment often impair patient quality of life. A growing number of men experience these negative effects over a longer time because of the increased incidence of and prolonged survival in prostate cancer, and the ageing of the population. Only a few studies have investigated the adverse effects of different prostate cancer treatments using large population-based samples. METHODS: We conducted a nationwide survey (n=1239) to collect detailed information regarding the negative effects (i...
February 21, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28221803/effects-of-thickness-on-the-metal-insulator-transition-in-free-standing-vanadium-dioxide-nanocrystals
#3
Mustafa M Fadlelmula, Engin Can Sürmeli, Mehdi Ramezani, Talip Serkan Kasırga
Controlling solid state phase transitions via external stimuli offers rich physics along with possibilities of unparalleled applications in electronics and optics. The well-known metal-insulator transition (MIT) in vanadium dioxide (VO2) is one instance of such phase transitions emerging from strong electronic correlations. Inducing the MIT using electric field has been investigated extensively for the applications in electrical and ultrafast optical switching. However, as the Thomas-Fermi screening length is very short, for considerable alteration in the material's properties with electric field induced MIT, crystals below 10 nm are needed...
February 21, 2017: Nano Letters
https://www.readbyqxmd.com/read/28218401/on-correction-of-translational-misalignments-between-section-planes-in-3d-ebsd
#4
O Šedivý, A Jäger
Three-dimensional electron backscatter diffraction allows obtaining the 3D image of a material from the stack of 2D sections. This is achieved by repeated application of two different beams; electron beam for electron backscatter diffraction mapping of the surface and focused ion beam for removing a thin layer of material from the surface. In most of these systems with two beams, the experiment requires stage movements for correct positioning of the sample to the respective beams. However, imperfections in this positioning are difficult to avoid, which yield small translational misalignments between the sections in the output data...
February 20, 2017: Journal of Microscopy
https://www.readbyqxmd.com/read/28217177/an-overview-of-current-practice-in-external-beam-radiation-oncology-with-consideration-to-potential-benefits-and-challenges-for-nanotechnology
#5
REVIEW
Raymond B King, Stephen J McMahon, Wendy B Hyland, Suneil Jain, Karl T Butterworth, Kevin M Prise, Alan R Hounsell, Conor K McGarry
Over the past two decades, there has been a significant evolution in the technologies and techniques employed within the radiation oncology environment. Over the same period, extensive research into the use of nanotechnology in medicine has highlighted a range of potential benefits to its incorporation into clinical radiation oncology. This short communication describes key tools and techniques that have recently been introduced into specific stages of a patient's radiotherapy pathway, including diagnosis, external beam treatment and subsequent follow-up...
2017: Cancer Nanotechnology
https://www.readbyqxmd.com/read/28214635/secondary-craniofacial-sarcomas-following-retinoblastoma-a-systematic-review
#6
REVIEW
Ryuya Yamanaka, Azusa Hayano
OBJECTIVE: We conducted the largest systematic review of individual patient data to characterize secondary craniofacial sarcomas following retinoblastoma. METHODS: We conducted a systemic search of the PubMed databases, and compiled a comprehensive literature review. Student t-tests were used to evaluate differences between variables. Kaplan-Meier analysis was used to estimate survival. Statistical significance was assessed by using a log-rank test. RESULTS: We analyzed 220 cases of secondary craniofacial sarcomas, including 112 osteosarcomas...
February 15, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28214368/evaluation-of-deformable-image-registration-between-external-beam-radiotherapy-and-hdr-brachytherapy-for-cervical-cancer-with-a-3d-printed-deformable-pelvis-phantom
#7
Noriyuki Kadoya, Yuya Miyasaka, Yujiro Nakajima, Yoshihiro Kuroda, Kengo Ito, Mizuki Chiba, Kiyokazu Sato, Suguru Dobashi, Takaya Yamamoto, Noriyoshi Takahashi, Masaki Kubozono, Ken Takeda, Keiichi Jingu
PURPOSE: In this study, we developed a 3D-printed deformable pelvis phantom for evaluating spatial DIR accuracy. We then evaluated the spatial DIR accuracies of various DIR settings for cervical cancer. METHODS: A deformable female pelvis phantom was created based on patient CT data using 3D printing. To create the deformable uterus phantom, we first 3D printed both a model of uterus and a model of the internal cavities of the vagina and uterus. We then made a mold using the 3D printed uterus phantom...
February 18, 2017: Medical Physics
https://www.readbyqxmd.com/read/28214281/patient-characterization-and-usage-trends-of-proton-beam-therapy-for-localized-prostate-cancer-in-the-united-states-a-study-of-the-national-cancer-database
#8
Arya Amini, David Raben, E David Crawford, Thomas W Flaig, Elizabeth R Kessler, Elaine T Lam, Paul Maroni, Thomas J Pugh
PURPOSE: To evaluate usage trends and identify factors associated with proton beam therapy (PBT) compared to alternative forms of external beam radiation therapy (RT) (EBRT) for localized prostate cancer. PATIENTS AND METHODS: The National Cancer Database was queried for men with localized (N0, M0) prostate cancer diagnosed between 2004 and 2013, treated with EBRT, with available data on EBRT modality (photon vs. PBT). Binary multiple logistic regression identified variables associated with EBRT modality...
February 14, 2017: Urologic Oncology
https://www.readbyqxmd.com/read/28209912/detection-efficacy-of-hybrid-68-ga-psma-ligand-pet-ct-in-prostate-cancer-patients-with-biochemical-recurrence-after-primary-radiation-therapy-defined-by-phoenix-criteria
#9
Ingo Einspieler, Isabel Rauscher, Charlotte Düwel, Markus Krönke, Christoph Rischpler, Gregor Habl, Sabrina Dewes, Armin Ott, Hans-Jürgen Wester, Markus Schwaiger, Tobias Maurer, Matthias Eiber
The aim of this retrospective study was to evaluate the detection rate of Glu-NH-CO-NH-Lys-(Ahx)-[(68)Ga(HBED-CC)] ((68)Ga-PSMA ligand) positron emission tomography/computed tomography (PET/CT) in patients with biochemical recurrent prostate cancer (PC) defined by Phoenix criteria after external beam radiotherapy (EBRT) or brachytherapy as primary treatment. Methods: 118 patients were finally eligible for this retrospective analysis with a median prostate-specific antigen (PSA) of 6.4 ng/mL (range: 2.2-158...
February 16, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/28209503/lymphoma-of-the-eyelid-an-international-multicenter-retrospective-study
#10
Frederik Holm Svendsen, Peter Kristian Rasmussen, Sarah E Coupland, Bita Esmaeli, Paul T Finger, Gerardo F Graue, Hans E Grossniklaus, Santosh G Honavar, Jwu Jin Khong, Penelope A McKelvie, Kaustubh Mulay, Elisabeth Ralfkiaer, Lene Dissing Sjö, Geeta K Vemuganti, Bradley A Thuro, Jeremy Curtin, Steffen Heegaard
PURPOSE: To document subtype-specific clinical features of lymphoma of the eyelid, and their effect on patient outcome. DESIGN: Retrospective observational case series. METHODS: Patient data were collected from 7 international eye cancer centers from January 1st 1980 through December 31st 2015. The cases included primary and secondary lymphomas affecting the eyelid. Overall survival, disease-specific survival (DSS), and progression-free survival were the primary end points...
February 13, 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/28209456/the-role-of-stereotactic-ablative-body-radiotherapy-in-gynaecological-cancers-a-systematic-review
#11
L C Mendez, E Leung, P Cheung, L Barbera
AIMS: To summarise and evaluate the current literature in gynaecological tumours treated with stereotactic ablative body radiotherapy (SABR) through a systematic review using the Preferred Reported Items for Systematic Reviews and Meta-analysis (PRISMA) guideline. MATERIALS AND METHODS: A literature search through Medline, EMBASE and Cochrane databases resulted in 22 pertinent manuscripts. Selected studies evaluated the locoregional role of SABR in gynaecological tumours, regardless of SABR clinical indication...
February 13, 2017: Clinical Oncology: a Journal of the Royal College of Radiologists
https://www.readbyqxmd.com/read/28208274/direct-trace-element-analysis-of-liquid-blood-samples-by-in-air-ion-beam-analytical-techniques-pixe-pige
#12
Robert Huszank, László Csedreki, Zsófia Török
There are various liquid materials whose elemental composition is of interest in various fields of science and technology. In many cases, sample preparation or the extraction can be complicated, or it would destroy the original environment before the analysis (for example, in the case of biological samples). However, multielement direct analysis of liquid samples can be realized by an external PIXE-PIGE measurement system. Particle-induced X-ray and gamma-ray emission spectroscopy (PIXE, PIGE) techniques were applied in external (in-air) microbeam configuration for the trace and main element determination of liquid samples...
February 7, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28205452/in-vivo-dosimetry-in-uk-external-beam-radiotherapy-current-and-future-usage
#13
Niall D MacDougall, Michael Graveling, Vibeke N Hansen, Kevin Brownsword, Andrew Morgan
OBJECTIVES: Towards Safer Radiotherapy (1) recommended that radiotherapy centres should have protocols in place for in vivo dosimetry (IVD) monitoring at the beginning of patient treatment courses. This report determines IVD implementation in the UK in 2014, the methods used and makes recommendations on future use. METHODS: Evidence from peer-reviewed journals was used in conjunction with the first survey of UK radiotherapy centres' IVD practice since the publication of TSRT...
February 16, 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/28204985/comparison-of-strain-measurement-in-the-mouse-forearm-using-subject-specific-finite-element-models-strain-gaging-and-digital-image-correlation
#14
Mark Begonia, Mark Dallas, Mark L Johnson, Ganesh Thiagarajan
Mechanical loading in bone leads to the activation of bone-forming pathways that are most likely associated with a minimum strain threshold being experienced by the osteocyte. To investigate the correlation between cellular response and mechanical stimuli, researchers must develop accurate ways to measure/compute strain both externally on the bone surface and internally at the osteocyte level. This study investigates the use of finite element (FE) models to compute bone surface strains on the mouse forearm...
February 15, 2017: Biomechanics and Modeling in Mechanobiology
https://www.readbyqxmd.com/read/28202343/endobronchial-brachytherapy-for-metastasis-from-extrapulmonary-malignancies-as-an-effective-treatment-for-palliation-of-symptoms
#15
E Donovan, E Timotin, T Farrell, B Donde, S Puksa, R Sur
PURPOSE: Endobronchial metastasis (EBM) originating from primary cancers outside the lung is rare. External beam radiotherapy is often attempted for control of symptoms with variable effectiveness and retreatment is challenging if symptoms recur. There is limited documentation of high-dose-rate brachytherapy for EBM in the literature. METHODS AND MATERIALS: A prospective database was created from 2006 to 2015. Patients with EBM who received high-dose-rate brachytherapy were included...
February 12, 2017: Brachytherapy
https://www.readbyqxmd.com/read/28202212/long-term-patient-reported-urinary-function-following-external-beam-radiotherapy-for-prostate-cancer
#16
S Chin, A J Hayden, V Gebski, S Cross, S L Turner
INTRODUCTION: This study reports long-term patient reported urinary function and urinary-related quality of life (uQoL) after external beam radiotherapy (EBRT) for localized prostate cancer. METHODS: 574 men underwent definitive prostate EBRT to 70-78 Gy±androgen deprivation therapy between 2000 and 2009. The median follow-up from EBRT was 44 months. Patients were evaluated at baseline (pre-EBRT) and at intervals post-treatment using the International Prostate Symptom Score (IPSS) instrument...
February 12, 2017: Clinical Oncology: a Journal of the Royal College of Radiologists
https://www.readbyqxmd.com/read/28199008/comparison-of-the-spread-of-two-different-volumes-of-contrast-medium-when-performing-ultrasound-guided-transversus-abdominis-plane-injection-in-dog-cadavers
#17
A Zoff, P Laborda-Vidal, J Mortier, M Amengual, E Rioja
OBJECTIVES: To compare, via CT imaging, the spread of different volumes of diluted iodinated contrast medium in the transversus abdominis muscle plane of dog cadavers. METHODS: Prospective, randomised study. An electro stimulation or a SonoTAP needle was inserted in plane with the ultrasound beam in the fascia between the internal oblique and transversus abdominis muscles. A test dose of 1 ml of diluted contrast (30 mg/mL iohexol) was injected to confirm positioning, followed by 0 · 5 mL/kg (n=14) or 1 mL/kg (n=12) and the distribution of the fluid compared...
February 15, 2017: Journal of Small Animal Practice
https://www.readbyqxmd.com/read/28198374/magnetic-routing-of-light-induced-waveguides
#18
Yana Izdebskaya, Vladlen Shvedov, Gaetano Assanto, Wieslaw Krolikowski
Among photofunctional materials that can be employed to control the propagation of light by modifying their properties, soft dielectrics such as nematic liquid crystals (NLCs) stand out for their large all-optical response. Through reorientation, the molecular distribution of NLCs can be modified by the electric field of light, permitting functional operations and supporting self-localized light beams or spatial optical solitons. To date, the generation and routing of such solitons have been limited by the boundary conditions employed to tailor the properties of NLCs in planar cells or capillaries...
February 15, 2017: Nature Communications
https://www.readbyqxmd.com/read/28195302/testing-biomechanical-models-of-human-lumbar-lordosis-variability
#19
Eric R Castillo, Connie Hsu, Ross W Mair, Daniel E Lieberman
OBJECTIVES: Lumbar lordosis (LL) is a key adaptation for bipedalism, but factors underlying curvature variations remain unclear. This study tests three biomechanical models to explain LL variability. MATERIALS AND METHODS: Thirty adults (15 male, 15 female) were scanned using magnetic resonance imaging (MRI), a standing posture analysis was conducted, and lumbar range of motion (ROM) was assessed. Three measures of LL were compared. The trunk's center of mass was estimated from external markers to calculate hip moments (Mhip ) and lumbar flexion moments...
February 13, 2017: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/28192653/double-network-structured-graphene-oxide-containing-nanogels-as-photothermal-agents-for-the-treatment-of-colorectal-cancer
#20
Calogero Fiorica, Nicolò Mauro, Giovanna Pitarresi, Cinzia Scialabba, Fabio S Palumbo, Gaetano Giammona
Here, we reported the production of hyaluronic acid/polyaspartamide-based double-network nanogels for the potential treatment of colorectal carcinoma. Graphene oxide, thanks to the huge aromatic surface area, allows to easily load high amount of irinotecan (33.0% w/w) and confers to the system hyperthermic properties when irradiated with a near-infrared (NIR) laser beam. We demonstrate that the release of antitumor drug is influenced both by the pH of the external medium and the NIR irradiation process. In vitro biological studies, conducted on human colon cancer cells (HCT 116), revealed that nanogels are uptaken by the cancer cells and, in the presence of the antitumor drug, can produce a synergistic hyperthermic/cytotoxic effect...
February 20, 2017: Biomacromolecules
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