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Late-breaking results contain unpublished accounts of innovative research ideas, preliminary results, system prototypes or industry showcases. Project papers introduce newly started research projects. These proceedings contain 9 late-breaking results and 4 project descriptions that were accepted for publication at UMAP... |
PURPOSE |
To analyze the reproducibility of patient specific IMRT QA results across five different clinical devices and one in-house detector by quantifying variations in the QA results from delivery-to-delivery (without re-setup, "redelivery") and variations when set-up is repeated ("re-setup"). |
METHODS |
Six patient plans were selected from among four treatment sites. Six methods of IMRT QA were chosen: film and cc04 ion chamber in a body phantom, diode array with all fields AP, as well as with fields delivered rotationally (in a MapPhan phantom), and an in-house designed solid water phantom with an insert containing 5... |
RESULTS |
Of all detectors investigated, film has the highest CV, with an average CV of 1.56% for re-deliveries, and 2.46% for re-setup. For the re-setup and re-delivery, the lowest average CV's are the AP diode array with 0.25%, and the ion chamber with 0.13%, respectively. Additionally the standard deviation in dose across the... |
CONCLUSION |
Different IMRT QA devices exhibit different reproducibility; however all CV's were lower than 5%, indicating good consistency in measurement. Film's dependence on the processor and choice of normalization point are possible reasons why this dosimetry system had a higher CV. This information will help quantify the confi... |
Quantitative phase microscopy (QPM) has recently emerged as a powerful label-free technique in the field of living cell imaging allowing to non-invasively measure with a nanometric axial sensitivity cell structure and dynamics. Since the phase retardation of a light wave when transmitted through the observed cells, nam... |
Mg/Teflon®/Viton (MTV) flares are the pyrotechnic compositions used in infrared decoys to protect aerial targets from IR-guided missiles. In this study, the influence of formulation changes on the burning time, and on the time to reach the required level of intensity of infrared radiation was examined. An ignition, in ... |
OBJECTIVE |
To estimate the prevalence of anemia in urban community dwelling elderly population. |
METHODS |
This study was a cross-sectional survey of prevalence of anemia in randomly selected community dwelling residents aged over 65 years in Beijing. Anemia was defined as hemoglobin concentration less than 130 g/L in men and 120 g/L in women. |
RESULTS |
The hemoglobin concentration was (135.65±14.48) g/L in total of 1 947 eligible participants and was much higher in men than in women [(142.56±15.56) g/L vs (130.95±11.53) g/L, P<0.001]. There were 288 (14.8%) patients with anemia, including 16.3%(129/789) in men and 13.7%(159/1 158) in women. The prevalence of anemia i... |
CONCLUSIONS |
Anemia is a common health problem in urban community dwelling elderly population. Most subjects have anemia with unknown origin. Further investigation is needed to explore the mechanism and related factors of elderly anemia.Self-stabilized Flocking of a Group of Mobile Robots under Memory Corruption |
Robotics has been paid a lot attentions because of its wide applications, like explore unknown planet or rescue people after earthquake or fire. In a group of mobile robots, robots are usually weak and are easy to get crash, especially working in dangerous or harsh environment. Unfortunately, to the best of our knowled... |
The electric characteristics such as impedance and conductivity of the organization will change in the case where pathological changes occurred in the biological tissue. The change in electric characteristics usually took place before the change in the density of tissues, and also, the difference in electric characteri... |
Immune responses of individuals infected with filarial nematodes are characterized by a marked cellular hyporesponsiveness and a shift of the cytokine balance toward a Th2/Th3 response. This modulation of cellular immune responses is considered as an important mechanism to avoid inflammatory immune responses that could... |
OBJECTIVE |
To introduce a posteromedial approach through the medial border of the medial head of gastrocnemius for reduction and reattachment of bony avulsion of the posterior cruciate ligament (PCL) from the tibia. |
METHODS |
Eleven patients with avulsed tibial attachment of the PCL underwent an operative reduction and internal fixation through the posteromedial approach of the gastrocnemius in our department from February 1998 to March 2000. The skin incision was reversed L-shaped along the medial border of the medial head of the gastrocne... |
RESULTS |
The posteromedial approach of the gastrocnemius used in repair of tibial attachment avulsed injury of the PCL could provide benefit of clear anatomical exposure, few blood loss (20 ml on average), no need for detachment or reattachment of any structure. The patients were followed up for 11 months on an average (ranging... |
CONCLUSIONS |
The posteromedial approach of the gastrocnemius is ideal for internal fixation of avulsed tibial attachment of the PCL. It is fairly easy, safe, time-saving, applicable alternatives, in addition, the morbidity is rare and can also be used in management of posteromedial fracture of the medial femoral condyle and tibial ... |
Sir.—The article by Salomon et al,1in the July 1987 issue ofAJDC, on the effects of changing the needle on the syringe after drawing up diphtheriapertussis-tetanus (DPT) vaccine and before injecting it on the incidence of local complications was informative. The authors demonstrated that changing the needle had no effe... |
Carnitine is a very important co-factor for the metabolism of fatty acids, because it is the necessary carrier for the passage of acyl groups inside the mitochondria, where beta-oxidation takes place. In the human body the total pool of carnitine is made by two fractions, one being endogenous and the second exogenous. ... |
A. COPPEN (UK): Perhaps I could begin by presenting data from my own trial (Coppen et al., 1976), in which we compared mianserin with amitriptyline in a group of depressive in-patients. They were treated for 6 weeks after an initial drug-free evaluation period of 7-10 days. The patients were rated every 2 weeks on the ... |
The neutropenic diet (ND) is prescribed to avoid introduction of bacteria into a host's gastrointestinal tract and reduce infection. Due to a lack of evidence to support the ND, there continues to be debate among pediatric oncologists regarding its usefulness. This prospective randomized controlled trial evaluated the ... |
Studies often cite climate issues in science, technology, engineering, and mathematics (STEM) employment to explain the lack of diversity by gender and race. Yet, little research directly attends to gender and racial differences in the college experiences, expected family roles, and ideological beliefs about gender tha... |
Small deletions of 6, 7, and 12 nucleotides introduced between the 5' splice site and the internal branch acceptor site of the first intron of the yeast MATa1 gene completely abolish accurate splicing in vitro in these constructs. Splicing only occurs at an alternative 5' splice site which was found in the first exon o... |
In OFDM systems, in-phase and quadrature (I/Q) imbalances generated in the analog front-end introduce inter-channel interference and, consequently, error performance degradation. This letter provides an exact expression involving the two-dimensional (2-D) Gaussian Q-function for the error probability of an arbitrary 2-... |
In this paper, we analyze the performance of dither modulation (DM) against the composite attacks including valumetric scaling, additive noise and constant change. The analyses are developed under the assumptions that the host vector and noise vector are mutually independent and both of them have independently and iden... |
Two forms of peroxidase (EC 1.11.1.7) were induced in mycelium of Trametes versicolor by ferulic acid, with an about 2,5-fold increase of their specific activity. Both inducible forms of peroxidase were isolated and partially purified by ion-exchange chromatography on CM-Sephadex C-50 and DEAE-Sepharose Cl 6B; some of ... |
The attention of the maximum-profit production scheduling and control grows up in automated manufacturing with considerations of market demand and product price. This paper not only constructs a mathematical model under deterministic market demand and product sales price, but also implements the Lagrange Method to opti... |
In recent years support for better public information on the quality of medical care has intensified, while the validity of the information available has been questioned. To address these concerns, we evaluated the reliability and validity of using each of 10 possible indicators to measure hospital and physician qualit... |
This report summarises the result of the GIFT program at Ramathibodi Hospital during 1990-1991. There were 35 treatment cycles in 34 infertile couples. The age of the females varied from 29 to 41 years. Duration of infertility was 3 to 10 years. GIFT was performed during diagnostic laparoscopy in 26 cycles (78%). Other... |
A comprehensive transcriptome analysis has been performed on protein-coding RNAs of Strongylocentrotus purpuratus, including 10 different embryonic stages, six feeding larval and metamorphosed juvenile stages, and six adult tissues. In this study, we pooled the transcriptomes from all of these sources and focused on th... |
BACKGROUND/AIMS |
Gastroscopic procedure causes nausea and retching in many patients. Recently, alternative methods have been employed in an effort to reduce these symptoms. The Neiguan point (P6) is an acupuncture point that has been used for approximately 3,000 years to overcome gastric symptoms including nausea and retching. The aim ... |
METHODS |
Three hundred and twenty-seven patients who visited the gastroenterology unit for dyspeptic complaints were included in the study. A portable transcutaneous electrical nerve stimulation device (Reliefband; Maven Lab, Yuba City, CA) was used for acustimulation. The device was attached 15 minutes before the endoscopic pr... |
RESULTS |
Groups were compared regarding their distress in swallowing the endoscope, nausea and retching, the impression of the endoscopist during the procedure and their acceptance of re-endoscopy. Groups 1, 2, 3 and 4 were compared using the chi-square test, and no significant difference was observed between the groups (p>0.05... |
CONCLUSIONS |
Acustimulation of the Neiguan (P6) acupoint does not relieve patients of the nausea observed during gastroscopy, and its application does not facilitate the procedure.Fast Generation of Deceptive Jamming Signal Against Spaceborne SAR Based on Spatial Frequency Domain Interpolation |
This article proposes a novel method for the generation of the deceptive jamming signal against spaceborne SAR, which can calculate the jammer’s frequency response (JFR) efficiently. The first advantage of this algorithm is that the real-time computational complexity is independent of the number of fake scattering unit... |
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