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https://www.readbyqxmd.com/read/29345808/immune-protective-effects-of-chitooligosaccharides-on-mice-genital-tract-infected-by-chlamydia-trachomatis
#1
Li Qian, Linjun Chen
PROBLEM: The immune protective effects of chitooligosaccharides (COs) on mouse genital tract infected by Chlamydia trachomatis (Ct) were unknown. METHODS: The minimum effective/infective dose was obtained by establishing the murine model of the genital tract infected by Ct. The model mice were treated with different doses (0.1, 0.2, and 0.3 g/kg,) of COs and 0.9% saline, and the serum immunoglobulin G (IgG) antibody and interleukin (IL)-11 levels were then assayed...
January 18, 2018: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/29345604/a-new-approach-of-three-dimensional-guidance-in-paediatric-cath-lab-segmented-and-tessellated-heart-models-for-cardiovascular-interventions-in-chd
#2
Nicole Ehret, Muhannad Alkassar, Sven Dittrich, Robert Cesnjevar, André Rüffer, Michael Uder, Oliver Rompel, Matthias Hammon, Martin Glöckler
BACKGROUND: Optimal imaging is essential for catheter-based interventions in CHD. The three-dimensional models in volume-rendering technique currently in use are not standardised. This paper investigates the feasibility and impact of novel three-dimensional guidance with segmented and tessellated three-dimensional heart models in catheterisation of CHD. In addition, a nearly radiation-free two- to three-dimensional registration and a biplane overlay were used. Methods and results We analysed 60 consecutive cases in which segmented tessellated three-dimensional heart models were merged with live fluoroscopy images and aligned using the tracheal bifurcation as a fiducial mark...
January 18, 2018: Cardiology in the Young
https://www.readbyqxmd.com/read/29344923/potential-effects-of-low-dose-average-ct-on-cardiac-implantable-electronic-devices
#3
Emily Y Pan, Dershan Luo, Tinsu Pan
BACKGROUND: Average CT has been shown to be more accurate than conventional helical CT in quantitation of the PET data. The risk of CT irradiation of a cardiac implantable electronic device (CIED) causing an adverse event is low and is generally outweighed by the clinical benefit of a medically indicated examination. However, irradiation of CIED over one breath cycle in cine CT scan for average CT could impose risks on a patient who is pacing dependent. The purpose of this study was to demonstrate that low-dose average CT can be safe for CIED...
January 17, 2018: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/29344306/131i-labeled-copper-sulfide-loaded-microspheres-to-treat-hepatic-tumors-via-hepatic-artery-embolization
#4
Qiufang Liu, Yuyi Qian, Panli Li, Sihang Zhang, Jianjun Liu, Xiaoguang Sun, Michael Fulham, Dagan Feng, Gang Huang, Wei Lu, Shaoli Song
Purpose: Transcatheter hepatic artery embolization therapy is a minimally invasive alternative for treating inoperable liver cancer but recurrence is frequent. Multifunctional agents, however, offer an opportunity for tumor eradication. In this study, we were aim to synthesized poly (lactic-co-glycolic acid) (PLGA) microspheres encapsulating hollow CuS nanoparticles (HCuSNPs) and paclitaxel (PTX) that were then labeled with radioiodine-131 (131I) to produce 131I-HCuSNPs-MS-PTX. This compound combines the multi-theranostic properties of chemotherapy, radiotherapy and photothermal therapy...
2018: Theranostics
https://www.readbyqxmd.com/read/29343756/radiological-and-clinical-differences-among-three-assisted-technologies-in-pedicle-screw-fixation-of-adult-degenerative-scoliosis
#5
Yong Fan, Jin Peng Du, Ji Jun Liu, Jia Nan Zhang, Shi Chang Liu, Ding Jun Hao
The purpose of this study was to compare the clinical and radiological differences among three advanced guided technologies in adult degenerative scoliosis. A total of 1012 pedicle screws were inserted in 83 patients using a spine robot (group A), 886 screws were implanted in 75 patients using a drill guide template (group B), and 1276 screws were inserted in 109 patients using CT-based navigation (group C). Screw positions were evaluated using postoperative CT scans according to the Gertzbein and Robbins classification...
January 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29343293/identification-of-preoperative-prediction-factors-of-tumor-subtypes-for-patients-with-solitary-ground-glass-opacity-pulmonary-nodules
#6
Meishuang Li, Yanan Wang, Yulong Chen, Zhenfa Zhang
BACKGROUND: Recent wide spread use of low-dose helical computed tomography for the screening of lung cancer have led to an increase in the detection rate of very faint and smaller lesions known as ground-glass opacity nodules. The purpose of this study was to investigate the clinical factors of lung cancer patients with solitary ground-glass opacity pulmonary nodules on computed tomography. METHODS: A total of 423 resected solitary ground-glass opacity nodules were retrospectively evaluated...
January 17, 2018: Journal of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/29343026/-applied-research-of-quadri-low-combined-with-automatic-tube-current-modulation-and-iterative-model-reconstruction-technology-in-head-and-neck-ct-angiography
#7
W Cai, C H Hu, X M Wang, S Hu, J Bao, J P Gong, G H Fan, W Zhang, D Shi, M H Qian
Objective: To investigate the feasibility of low tube voltage, low contrast medium concentration, injection rate and volume (quadri-low) combined with automatic tube current modulation (ATCM) and iterative model reconstruction (IMR) technology in head and neck CT angiography (CTA). Methods: A total of 70 patients whose body mass index (BMI)<25 kg/m(2) underwent head and neck CTA and digital subtraction angiography (DSA) from January to July 2017 were enrolled in this prospective study. According to random number table, patients were divided into two groups: group A (n=35) was scanned according to the protocol of 120 kV, 150 mAs, 50 ml and 5 ml/s iopromide (370 mg/ml) and filtered back projection (FBP) reconstruction; group B (n=35) was scanned with 80 kV, ATCM with mean tube current of 100 mAs, 30 ml and 3 ml/s iohexol (300 mg/ml) and IMR; the other parameters kept consistent between the two groups...
January 2, 2018: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/29342302/determination-of-the-appropriate-physical-density-of-internal-metallic-ports-in-temporary-tissue-expanders-for-the-treatment-planning-of-post-mastectomy-radiation-therapy
#8
Norifumi Mizuno, Haruna Takahashi, Jiro Kawamori, Naoki Nakamura, Mami Ogita, Shogo Hatanaka, Ryouhei Yamauchi, Masatsugu Hariu, Kenji Sekiguchi
Some patients undergoing breast reconstruction require post-mastectomy radiation therapy, but the metallic ports used in temporary tissue expanders attenuate the X-rays. In this study, we evaluated by the film method, the attenuation of 4 MV and 6 MV X-rays after passing through a metallic port, with the aim of identifying a useful method for determining the appropriate density to use in the radiation treatment planning system (RTPS), taking into account the distance between the metallic port and the targets...
January 12, 2018: Journal of Radiation Research
https://www.readbyqxmd.com/read/29340629/development-of-a-set-of-mesh-based-and-age-dependent-chinese-phantoms-and-application-for-ct-dose-calculations
#9
Yifei Pi, Tianyu Liu, X George Xu
Phantoms for organ dose calculations are essential in radiation protection dosimetry. This article describes the development of a set of mesh-based and age-dependent phantoms for Chinese populations using reference data recommended by the Chinese government and by the International Atomic Energy Agency (IAEA). Existing mesh-based RPI adult male (RPI-AM) and RPI adult female (RPI-AF) phantoms were deformed to form new phantoms according to anatomical data for the height and weight of Chinese individuals of 5 years old male, 5 years old female, 10 years old male, 10 years old female,15 years old male, 15 years old female, adult male and adult female-named USTC-5 M, USTC-5F, USTC-10M, USTC-10F, USTC-15M, USTC-15F, USTC-AM and USTC-AF, respectively...
January 11, 2018: Radiation Protection Dosimetry
https://www.readbyqxmd.com/read/29340290/tailoring-four-dimensional-cone-beam-ct-acquisition-settings-for-fiducial-marker-based-image-guidance-in-radiation-therapy
#10
Peng Jin, Niek van Wieringen, Maarten C C M Hulshof, Arjan Bel, Tanja Alderliesten
Use of four-dimensional cone-beam CT (4D-CBCT) and fiducial markers for image guidance during radiation therapy (RT) of mobile tumors is challenging due to the trade-off among image quality, imaging dose, and scanning time. This study aimed to investigate different 4D-CBCT acquisition settings for good visibility of fiducial markers in 4D-CBCT. Using these 4D-CBCTs, the feasibility of marker-based 4D registration for RT setup verification and manual respiration-induced motion quantification was investigated...
April 2018: Journal of Medical Imaging
https://www.readbyqxmd.com/read/29339573/-sup-18-sup-f-choline-pet-ct-for-parathyroid-scintigraphy-significantly-lower-radiation-exposure-of-patients-in-comparison-to-conventional-nuclear-medicine-imaging-approaches
#11
Sebastijan Rep, Marko Hocevar, Janja Vaupotič, Urban Zdesar, Katja Zaletel, Luka Lezaic
Parathyroid subtraction scintigraphy is the most commonly used imaging method for localization of hyperfunctioning parathyroid glands (HPG) in primary hyperparathyroidism, a common endocrine disorder. Hybrid (SPECT/CT) imaging with 99mTc-sestaMIBI (MIBI) at an early and delayed phase (dual-phase imaging) may be the most accurate conventional imaging approach, but includes additional radiation exposure due to added CT imaging. Recently, 18F-choline (FCH) PET/CT was introduced for HPG imaging, which can also be performed using the dual-phase approach...
January 17, 2018: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
https://www.readbyqxmd.com/read/29338844/sfe-sfedp-adrenal-insufficiency-french-consensus-introduction-and-handbook
#12
Yves Reznik, Pascal Barat, Jérôme Bertherat, Claire Bouvattier, Frédéric Castinetti, Olivier Chabre, Philippe Chanson, Christine Cortet, Brigitte Delemer, Bernard Goichot, Damien Gruson, Laurence Guignat, Emmanuelle Proust-Lemoine, Marie-Laure Raffin Sanson, Rachel Reynaud, Dinane Samara Boustani, Dominique Simon, Antoine Tabarin, Delphine Zenaty
The French endocrinology society (SFE) and the French pediatric endocrinology society (DFSDP) have drawn up recommendations for the management of primary and secondary adrenal insufficiency in the adult and child, based on an analysis of the literature by 19 experts in 6 work-groups. A diagnosis of adrenal insufficiency should be suspected in the presence of a number of non-specific symptoms except hyperpigmentation which is observed in primary adrenal insufficiency. Diagnosis rely on plasma cortisol and ACTH measurement at 8am and/or the cortisol increase after synacthen administration...
January 12, 2018: Annales D'endocrinologie
https://www.readbyqxmd.com/read/29338826/application-of-the-dual-layer-spectral-detector-ct-in-the-ct-angiography-of-superior-vena-cava
#13
Guo Rong Wang, Zhi Wei Wang, Yi Ning Wang, Zheng Yu Jin
Objective To evaluate the application of the dual-layer spectral detector CT in the CT angiography of superior vena cava (SVC). Methods Totally 30 consecutive patients who underwent chest enhanced CT in our center were enrolled in this study. Eight series of images were reconstructed,including the conventional images at 120 kVp and seven series of virtual monoenergetic spectral images at 40,50,60,70,80,90,and 100 keV. The regions of interest (ROIs) were placed at the level of the proximal end,middle part,and distal end in the SVC vessel...
December 20, 2017: Zhongguo Yi Xue Ke Xue Yuan Xue Bao. Acta Academiae Medicinae Sinicae
https://www.readbyqxmd.com/read/29338305/safety-and-feasibility-of-prostate-stereotactic-ablative-radiotherapy-using-multi-modality-imaging-and-flattening-filter-free
#14
Aileen Duffton, Azmat Sadozye, Lynsey Devlin, Nicholas MacLeod, Carolynn Lamb, Suzanne Smith, Philip McLoone, Muthu Sankaralingam, John Foster, Stephanie Paterson, Stefanie Keatings, David Dodds
PURPOSE: To investigate feasibility and safety of SABR in the management of prostate cancer while employing MR/CT fusion for delineation, fiducial markers seeds for positioning and Varian Rapidarc with FFF delivery. METHODS: Forty-one patients were treated for low-intermediate risk prostate cancer with initial PSA (iPSA) of ≤20ng/ml, Gleason score 6-7. Patients had MR/CT fusion for delineation of prostate +/-seminal vesicles. CT/MR fusion images were used for delineation and planned using flattening filter free modality...
January 17, 2018: British Journal of Radiology
https://www.readbyqxmd.com/read/29336865/continuous-hyperfractionated-accelerated-radiotherapy-chart-for-non-small-cell-lung-cancer-nsclc-7-years-experience-from-nine-uk-centres
#15
P Sanganalmath, J E Lester, A G Bradshaw, T Das, C Esler, A E F Roy, E Toy, J F Lester, M Button, P Wilson, C Comins, P Atherton, R Pickles, K Foweraker, G A Walker, M Keni, M Q Hatton
AIM: Continuous hyperfractionated accelerated radiotherapy (CHART) remains an option to treat non-small cell lung cancer (NSCLC; NICE, 2011). We have previously published treatment outcomes from 1998-2003 across five UK centres. Here we update the UK CHART experience, reporting outcomes and toxicities for patients treated between 2003 and 2009. MATERIALS AND METHODS: UK CHART centres were invited to participate in a retrospective data analysis of NSCLC patients treated with CHART from 2003 to 2009...
January 11, 2018: Clinical Oncology: a Journal of the Royal College of Radiologists
https://www.readbyqxmd.com/read/29334750/-remission-of-steroid-resistant-stills-disease-treated-with-anakinra-evidenced-by-fdg-pet-ct-examination-case-report
#16
Zdeněk Adam, Jana Skřičková, Milan Krtička, Zdeněk Řehák, Renata Koukalová, Andrea Šprláková, Marta Krejčí, Luděk Pour, Zdenka Adamová, Eva Pourová, Zdeněk Král
After elimination of infectious causes, neoplastic causes and the systemic autoimmune disease of connective tissue, a patient with high fevers over 39 °C was diagnosed with Stills disease. High doses of prednisone led to resolution of symptoms, however after reducing the doses of prednisone to 15 mg, high fevers over 39 °C returned, as well as joint pains. The high doses of prednisone led to decompensation of diabetes mellitus even with 4 daily insulin dosages. Therefore it was proceeded to regular subcutaneous administration of anakinra once a day...
2018: Vnitr̆ní Lékar̆ství
https://www.readbyqxmd.com/read/29334098/how-a-tertiary-diamine-molecule-chelates-the-silicon-dimers-of-the-si-001-surface-a-real-time-scanning-tunneling-microscopy-study
#17
Ahmed Naitabdi, François Rochet, Fabrice Bournel, Marco Bonato, Jean-Jacques Gallet, Federica Bondino, Elena Magnano
The patterning of silicon surfaces by organic molecules emerges as an original way to fabricate innovative nanoelectronic devices. In this regard, we have studied how a diamine, N,N,N',N'-tetramethylethylenediamine (TMEDA, (CH3)2N-[CH2]2-N(CH3)2), chelates the silicon dimers of the Si(001)-2 × 1 surface. Starting from very low coverage to surface saturation (at 300 K), we used real-time scanning tunneling microscopy (STM) in a scanning-while-dosing approach. The images show that the molecules can adopt two bonding configurations: the cross-trench (CT) configuration by bridging two adjacent dimer rows, and the end-bridge (EB) configuration by chelating two adjacent dimers in the same row...
January 15, 2018: Nanoscale
https://www.readbyqxmd.com/read/29333127/quality-assurance-procedures-based-on-dosimetric-gamma-analysis-as-a-fast-reliable-tool-for-commissioning-brachytherapy-treatment-planning-systems
#18
Grzegorz Zwierzchowski, Grzegorz Bieleda, Janusz Skowronek
Background: Fast and easily repeatable methods for commissioning procedures for brachytherapy (BT) treatment planning systems (TPS) are needed. Radiochromic film dosimetry with gamma analysis is widely used in external beam quality assurance (QA) procedures and planar film dosimetry is also increasingly used for verification of the dose distribution in BT applications. Using the gamma analysis method for comparing calculated and measured dose data could be used for commissioning procedures of the newly developed TG-186 and MBDCA calculation algorithms...
December 2017: Radiology and Oncology
https://www.readbyqxmd.com/read/29333113/grating-oriented-line-wise-filtration-golf-for-dual-energy-x-ray-ct
#19
Yan Xi, Wenxiang Cong, Daniel Harrison, Ge Wang
In medical X-ray Computed Tomography (CT), the use of two distinct X-ray source spectra (energies) allows dose-reduction and material discrimination relative to that achieved with only one source spectrum. Existing dual-energy CT methods include source kVp-switching, double-layer detection, dual-source gantry, and two-pass scanning. Each method suffers either from strong spectral correlation or patient-motion artifacts. To simultaneously address these problems, we propose to improve CT data acquisition with the Grating Oriented Line-wise Filtration (GOLF) method, a novel X-ray filter that is placed between the source and patient...
December 2017: Sensing and Imaging
https://www.readbyqxmd.com/read/29332447/a-projection-quality-driven-tube-current-modulation-method-in-cone-beam-ct-for-igrt-proof-of-concept
#20
Kuo Men, Jianrong Dai
PURPOSE: To develop a projection quality-driven tube current modulation method in cone-beam computed tomography for image-guided radiotherapy based on the prior attenuation information obtained by the planning computed tomography and then evaluate its effect on a reduction in the imaging dose. MATERIALS AND METHODS: The QCKV-1 phantom with different thicknesses (0-400 mm) of solid water upon it was used to simulate different attenuation (μ). Projections were acquired with a series of tube current-exposure time product (mAs) settings, and a 2-dimensional contrast to noise ratio was analyzed for each projection to create a lookup table of mAs versus 2-dimensional contrast to noise ratio, μ...
December 2017: Technology in Cancer Research & Treatment
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