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https://www.readbyqxmd.com/read/28651263/quality-and-dose-optimized-ct-trauma-protocol-recommendation-from-a-university-level-i-trauma-center
#1
Johannes Kahn, David Kaul, Georg Böning, Roman Rotzinger, Patrick Freyhardt, Philipp Schwabe, Martin H Maurer, Diane Miriam Renz, Florian Streitparth
Purpose As a supra-regional level-I trauma center, we evaluated computed tomography (CT) acquisitions of polytraumatized patients for quality and dose optimization purposes. Adapted statistical iterative reconstruction [(AS)IR] levels, tube voltage reduction as well as a split-bolus contrast agent (CA) protocol were applied. Materials and Methods 61 patients were split into 3 different groups that differed with respect to tube voltage (120 - 140 kVp) and level of applied ASIR reconstruction (ASIR 20 - 50 %)...
June 26, 2017: RöFo: Fortschritte Auf Dem Gebiete der Röntgenstrahlen und der Nuklearmedizin
https://www.readbyqxmd.com/read/28647981/-disparities-of-sex-on-cancer-incidence-and-mortality-in-jiashan-county-zhejiang-province-1990-2014
#2
X Y Jiang, Y Q Hu, D Ye, Q L Li, K Chen, M J Jin
Objective: This study aimed to describe the sex disparities on cancer incidence and mortality in Jiashan population. Methods: All data concerning incident and death cases of cancers were gathered from the database of Cancer Registry in Jiashan county. Data from the 2010 China census was used as the standard population. Sex-specific age-standardized incidence rates (ASIRs), mortality rates (ASMRs) per 100 000 persons for all cancers and types of each cancer were calculated for the years of 1990 to 1999, 2000 to 2009, 2010 to 2014, and 1990 to 2014...
June 10, 2017: Zhonghua Liu Xing Bing Xue za Zhi, Zhonghua Liuxingbingxue Zazhi
https://www.readbyqxmd.com/read/28629559/prospective-intra-individual-comparison-of-standard-dose-versus-reduced-dose-thoracic-ct-using-hybrid-and-pure-iterative-reconstruction-in-a-follow-up-cohort-of-pulmonary-nodules-effect-of-detectability-of-pulmonary-nodules-with-lowering-dose-based-on-nodule
#3
Varut Vardhanabhuti, Chun-Lap Pang, Sean Tenant, James Taylor, Christopher Hyde, Carl Roobottom
OBJECTIVES: To determine the diagnostic accuracy of lung nodule detection in thoracic CT using 2 reduced dose protocols comparing 3 available CT reconstruction algorithms (filtered back projection-FBP, adaptive statistical reconstruction-ASIR and model-based iterative reconstruction-MBIR) in a western population. MATERIALS AND METHODS: A prospective single-center study recruited 98 patients with written consent. Standard dose (STD) thoracic CT followed by 2 reduced-dose protocols using automatic tube current modulation (RD1) and fixed tube current (RD2) were performed and reconstructed with FBP, ASIR and MBIR with subsequent diagnostic accuracy analysis for nodule detection...
June 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28621155/the-role-of-telemedicine-in-obstructive-sleep-apnea-management
#4
Vera Lugo, Jair Asir Villanueva, Onintza Garmendia, Josep M Montserrat
Obstructive sleep apnea (OSA) is a common disease that leads in notorious symptoms and comorbidities. Although general measures are important, continuous positive airway pressure (CPAP) is the best treatment option. However, compliance can be suboptimal and telemedicine may play a role to improve it. Areas covered: Review authors searched EMBASE, PubMed and Cochrane data bases using the following keywords: continuous positive airway pressure, Obstructive sleep apnea, telemedicine, respiratory telemedicine, information and communication technology...
June 16, 2017: Expert Review of Respiratory Medicine
https://www.readbyqxmd.com/read/28616448/adaptive-statistical-iterative-reconstruction-improves-image-quality-without-affecting-perfusion-ct-quantitation-in-primary-colorectal-cancer
#5
D Prezzi, V Goh, S Virdi, S Mallett, C Grierson, D J Breen
OBJECTIVES: To determine the effect of Adaptive Statistical Iterative Reconstruction (ASIR) on perfusion CT (pCT) parameter quantitation and image quality in primary colorectal cancer. METHODS: Prospective observational study. Following institutional review board approval and informed consent, 32 patients with colorectal adenocarcinoma underwent pCT (100 kV, 150 mA, 120 s acquisition, axial mode). Tumour regional blood flow (BF), blood volume (BV), mean transit time (MTT) and permeability surface area product (PS) were determined using identical regions-of-interests for ASIR percentages of 0%, 20%, 40%, 60%, 80% and 100%...
2017: European Journal of Radiology Open
https://www.readbyqxmd.com/read/28596194/influence-of-ultra-low-dose-and-iterative-reconstructions-on-the-visualization-of-orbital-soft-tissues-on-maxillofacial-ct
#6
G Widmann, D Juranek, F Waldenberger, P Schullian, A Dennhardt, R Hoermann, M Steurer, E-M Gassner, W Puelacher
BACKGROUND AND PURPOSE: Dose reduction on CT scans for surgical planning and postoperative evaluation of midface and orbital fractures is an important concern. The purpose of this study was to evaluate the variability of various low-dose and iterative reconstruction techniques on the visualization of orbital soft tissues. MATERIALS AND METHODS: Contrast-to-noise ratios of the optic nerve and inferior rectus muscle and subjective scores of a human cadaver were calculated from CT with a reference dose protocol (CT dose index volume = 36...
June 8, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28559721/non-pharmacological-therapies-for-primary-open-angle-glaucoma-a-quasi-experimental-pilot-study
#7
Rahul Pandey, Asir John Samuel, Vencita Priyanka Aranha, Anamika Pandey, Kanimozhi Narkeesh
Purpose: One of the major causes of blindness is Primary open angle glaucoma (POAG) and it has only surgical treatment and lifelong use of medication. Hence many side effects arise. To overcome this, the drugless approach is in practice but the importance of Muscle Energy Technique (MET) and Myofacial (MFR) Release is not explored. Hence, our objective was to determine the effectiveness of MET and MFR on POAG. Methods: A total of 12 patients with POAG were recruited from the tertiary care teaching hospital through criteria based convenience sampling for the study...
April 2017: Saudi Journal of Ophthalmology: Official Journal of the Saudi Ophthalmological Society
https://www.readbyqxmd.com/read/28555508/iterative-reconstruction-in-single-source-dual-energy-ct-angiography-feasibility-of-low-and-ultra-low-volume-contrast-medium-protocols
#8
Ping Hou, Xiangnan Feng, Jie Liu, Yue Zhou, Yaojun Jiang, Xiaochen Jiang, Jianbo Gao
OBJECTIVE: To evaluate the feasibility of using contrast medium (CM) of low and ultra-low volumes and injection rates in aortic CT angiography (CTA) through the joint application of single-source dual-energy CT (ssDECT) and adaptive statistical iterative reconstruction (ASIR). METHODS: 120 patients with known or suspected aortic dissection underwent aortic CTA and were equally divided into 3 groups. Conventional 120-kVp scan with a CM volume of 70 ml and an injection rate of 5 ml s(-1) was performed on Group A...
June 23, 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/28552128/application-of-data-mining-techniques-and-data-analysis-methods-to-measure-cancer-morbidity-and-mortality-data-in-a-regional-cancer-registry-the-case-of-the-island-of-crete-greece
#9
Iraklis Varlamis, Ioannis Apostolakis, Dimitra Sifaki-Pistolla, Nilanjan Dey, Vassilios Georgoulias, Christos Lionis
BACKGROUND AND OBJECTIVE: Micro or macro-level mapping of cancer statistics is a challenging task that requires long-term planning, prospective studies and continuous monitoring of all cancer cases. The objective of the current study is to present how cancer registry data could be processed using data mining techniques in order to improve the statistical analysis outcomes. METHODS: Data were collected from the Cancer Registry of Crete in Greece (counties of Rethymno and Lasithi) for the period 1998-2004...
July 2017: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/28539869/correct-the-smile-of-a-child-by-neuromuscular-facilitation-technique-an-interesting-case-report
#10
Vencita Priyanka Aranha, Asir John Samuel, Kanimozhi Narkeesh
Bell's palsy (BP) in children is a rare case with no documented evidence regarding its rehabilitation management. Till date, individuals with BP are being treated with electrical stimulation are proportionately greater than other conventional means such as facial exercise and massage. These conventional modes of treatment have proved to have less incidence of synkinesis with more benefits. Here, we report a case of a 7-year-old boy diagnosed clinically to have right idiopathic facial nerve paralysis, who underwent 14 days of facial proprioceptive neuromuscular facilitation exercises along with facial therapeutic massage...
April 2017: International Journal of Health Sciences
https://www.readbyqxmd.com/read/28487088/incidence-mortality-and-trends-of-non-melanoma-skin-cancer-in-germany
#11
Ulrike Leiter, Ulrike Keim, Thomas Eigentler, Alexander Katalinic, Bernd Holleczek, Peter Martus, Claus Garbe
Increasing incidence rates (IR) of non-melanoma skin cancer (NMSC) in Caucasian populations have been described worldwide. Cancer registry data from the Saarland and Schleswig-Holstein Federal States were used to analyze incidence and mortality trends in Germany. Age-standardized rates are compared to crude rates to assess disease burden. Joinpoint regression models were used to estimate annual percentage changes and 95% confidence intervals, allowing us to assess temporal trends between 1970-2012. Incidence predictions until 2030 were based on age-period-cohort models and linear extrapolation techniques...
May 6, 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28405932/synthesis-characterization-and-solvatochromic-studies-using-the-solvent-polarity-parameter-ent-on-2-chloro-3-ethylamino-1-4-naphthoquinone
#12
Arulappan Durairaj, Asir Obadiah, Subramanian Ramanathan, Princy Merlin Johnson, Antony Paulraj Bella, Samuel Vasanthkumar
Quinones are molecules with varied biological activities and electronic properties which are used for important applications [1, 2]. Quinone with a heteroatom substituted, namely 2-chloro-3-ethylamino-1,4-naphthoquinone (N-CAN) was synthesized and characterized by various techniques such as H(1)-NMR, C(13)-NMR, Mass spectroscopy and FT-IR spectroscopy. In this study, the solvatochromic effects on the spectral properties of 2-chloro-3-ethylamino-1,4-naphthoquinone have been investigated in different solvents taking into consideration, the solvent parameters like dielectric constant (ε) and refractive index (η) of different solvent polarities...
April 12, 2017: Journal of Fluorescence
https://www.readbyqxmd.com/read/28405477/influence-of-adaptive-statistical-iterative-reconstruction-algorithm-on-image-quality-in-coronary-computed-tomography-angiography
#13
Helle Precht, Jesper Thygesen, Oke Gerke, Kenneth Egstrup, Dag Waaler, Jess Lambrechtsen
BACKGROUND: Coronary computed tomography angiography (CCTA) requires high spatial and temporal resolution, increased low contrast resolution for the assessment of coronary artery stenosis, plaque detection, and/or non-coronary pathology. Therefore, new reconstruction algorithms, particularly iterative reconstruction (IR) techniques, have been developed in an attempt to improve image quality with no cost in radiation exposure. PURPOSE: To evaluate whether adaptive statistical iterative reconstruction (ASIR) enhances perceived image quality in CCTA compared to filtered back projection (FBP)...
December 2016: Acta Radiologica Open
https://www.readbyqxmd.com/read/28390673/diagnostic-performance-of-256-row-detector-coronary-ct-angiography-in-patients-with-high-heart-rates-within-a-single-cardiac-cycle-a%C3%A2-preliminary-study
#14
J Liang, H Wang, L Xu, L Yang, L Dong, Z Fan, R Wang, Z Sun
AIM: To evaluate the image quality and diagnostic performance of coronary computed tomography angiography (CCTA) in patients with high heart rate within a single cardiac cycle using a 256-row detector CT system. MATERIALS AND METHODS: Eighty-four consecutive symptomatic patients (mean age 60.4±9.1 years, 52 men) with suspected coronary artery disease and heart rate ≥75 beats/min undergoing CCTA and invasive coronary angiography (ICA) were enrolled retrospectively...
April 5, 2017: Clinical Radiology
https://www.readbyqxmd.com/read/28387698/noise-indices-adjusted-to-body-mass-index-and-an-iterative-reconstruction-algorithm-maintain-image-quality-on-low-dose-contrast-enhanced-liver-ct
#15
Yongxia Zhao, Hongna Suo, Yanmin Wu, Ziwei Zuo, Sisi Zhao, Shujie Cheng
OBJECTIVES: Since body mass index (BMI) affects medical imaging quality or noise due to penetration of the radiation through bodies with varying sizes, this study aims to investigate and determine the optimal BMI-adjusted noise index (NI) setting on the contrast-enhanced liver CT scans obtained using 3D Smart mA technology with adaptive statistical iterative reconstruction (ASIR 2.0) algorithm. MATERIALS AND METHODS: A total of 320 patients who had contrast-enhanced liver CT scans were divided into two equal-sized groups: A (18...
April 5, 2017: Journal of X-ray Science and Technology
https://www.readbyqxmd.com/read/28376262/the-effects-of-iterative-reconstruction-and-kernel-selection-on-quantitative-computed-tomography-measures-of-lung-density
#16
Alfonso Rodriguez, Frank N Ranallo, Philip F Judy, Sean B Fain
PURPOSE: To determine the effects of iterative reconstruction (IR) and high-frequency kernels on quantitative computed tomography (qCT) density measures at reduced X-ray dose. MATERIALS AND METHODS: The COPDGene 2 Phantom (CTP 698, The Phantom Laboratory, Salem, NY) with four embedded lung mimicking foam densities (12lb, 20lb, and 4lb), as well as water, air, and acrylic reference inserts, was imaged using a GE 64 slice CT750 HD scanner in helical mode with four current-time products ranging from 12 to 100 mAs...
April 4, 2017: Medical Physics
https://www.readbyqxmd.com/read/28365232/iterative-reconstructions-in-reduced-dose-ct-which-type-ensures-diagnostic-image-quality-in-young-oncology-patients
#17
Bastien Pauchard, Kai Higashigaito, Aicha Lamri-Senouci, Jean-Francois Knebel, Dominik Berthold, Francis Robert Verdun, Hatem Alkadhi, Sabine Schmidt
RATIONALE AND OBJECTIVES: To compare adaptive statistical iterative reconstruction (ASIR) and model-based iterative reconstruction (MBIR) algorithms for reduced-dose computed tomography (CT). MATERIALS AND METHODS: Forty-four young oncology patients (mean age 30 ± 9 years) were included. After routine thoraco-abdominal CT (dose 100%, average CTDIvol 9.1 ± 2.4 mGy, range 4.4-16.9 mGy), follow-up CT was acquired at 50% (average CTDIvol 4.5 ± 1.2 mGy, range 2...
March 29, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28345547/contrast-dose-and-radiation-dose-reduction-in-abdominal-enhanced-computerized-tomography-scans-with-single-phase-dual-energy-spectral-computerized-tomography-mode-for-children-with-solid-tumors
#18
Tong Yu, Jun Gao, Zhi-Min Liu, Qi-Feng Zhang, Yong Liu, Ling Jiang, Yun Peng
BACKGROUND: Contrast dose and radiation dose reduction in computerized tomography (CT) scan for adult has been explored successfully, but there have been few studies on the application of low-concentration contrast in pediatric abdominal CT examinations. This was a feasibility study on the use of dual-energy spectral imaging and adaptive statistical iterative reconstruction (ASiR) for the reduction of radiation dose and iodine contrast dose in pediatric abdominal CT patients with solid tumors...
April 5, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28330192/differential-display-reverse-transcription-pcr-ddrt-pcr-a-new-technology-for-molecular-detection-and-studying-one-of-the-antagonistic-factors-of-bacillus-endophyticus-strain-sa-against-staphylococcus-aureus-mrsa
#19
Mahmoud F Moustafa, Tarek H Taha, M Helal, Sulaiman A Alrumman
Differential Display (DDRT-PCR) is a powerful technique for analyzing differences in gene expression. In-vivo expression technologies and differential display RT-PCR are providing new approaches to further examine a microbe's response to experimental conditions which more closely resemble natural microbial associations and habitats. In this study, Bacillus endophyticus strain SA isolated from the inner tissue of the stem of the cultivated plant (Salvadora persica, Asir, Kingdom of Saudi Arabia) produces an antagonistic factor...
December 2016: 3 Biotech
https://www.readbyqxmd.com/read/28302073/image-quality-improvement-using-model-based-iterative-reconstruction-in-low-dose-chest-ct-for-children-with-necrotizing-pneumonia
#20
Jihang Sun, Tong Yu, Jinrong Liu, Xiaomin Duan, Di Hu, Yong Liu, Yun Peng
BACKGROUND: Model-based iterative reconstruction (MBIR) is a promising reconstruction method which could improve CT image quality with low radiation dose. The purpose of this study was to demonstrate the advantage of using MBIR for noise reduction and image quality improvement in low dose chest CT for children with necrotizing pneumonia, over the adaptive statistical iterative reconstruction (ASIR) and conventional filtered back-projection (FBP) technique. METHODS: Twenty-six children with necrotizing pneumonia (aged 2 months to 11 years) who underwent standard of care low dose CT scans were included...
March 16, 2017: BMC Medical Imaging
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