Dimensional Measurement Accuracy
Cyclotrons
Calibration
Reproducibility of Results
Phantoms, Imaging
Fourier Analysis
Consistency and precision of landmark identification in three-dimensional cone beam computed tomography scans. (1/24)
(+info)A comparative study of lateral cephalograms and cone-beam computed tomographic images in upper airway assessment. (2/24)
(+info)Repeatability and reproducibility of landmarks--a three-dimensional computed tomography study. (3/24)
(+info)Is oral temperature an accurate measurement of deep body temperature? A systematic review. (4/24)
CONTEXT: Oral temperature might not be a valid method to assess core body temperature. However, many clinicians, including athletic trainers, use it rather than criterion standard methods, such as rectal thermometry. OBJECTIVE: To critically evaluate original research addressing the validity of using oral temperature as a measurement of core body temperature during periods of rest and changing core temperature. DATA SOURCES: In July 2010, we searched the electronic databases PubMed, Scopus, Cumulative Index to Nursing and Allied Health Literature (CINAHL), SPORTDiscus, Academic Search Premier, and the Cochrane Library for the following concepts: core body temperature, oral, and thermometers. Controlled vocabulary was used, when available, as well as key words and variations of those key words. The search was limited to articles focusing on temperature readings and studies involving human participants. DATA SYNTHESIS: Original research was reviewed using the Physiotherapy Evidence Database (PEDro). Sixteen studies met the inclusion criteria and subsequently were evaluated by 2 independent reviewers. All 16 were included in the review because they met the minimal PEDro score of 4 points (of 10 possible points), with all but 2 scoring 5 points. A critical review of these studies indicated a disparity between oral and criterion standard temperature methods (eg, rectal and esophageal) specifically as the temperature increased. The difference was -0.50 degrees C +/- 0.31 degrees C at rest and -0.58 degrees C +/- 0.75 degrees C during a nonsteady state. CONCLUSIONS: Evidence suggests that, regardless of whether the assessment is recorded at rest or during periods of changing core temperature, oral temperature is an unsuitable diagnostic tool for determining body temperature because many measures demonstrated differences greater than the predetermined validity threshold of 0.27 degrees C (0.5 degrees F). In addition, the differences were greatest at the highest rectal temperatures. Oral temperature cannot accurately reflect core body temperature, probably because it is influenced by factors such as ambient air temperature, probe placement, and ingestion of fluids. Any reliance on oral temperature in an emergency, such as exertional heat stroke, might grossly underestimate temperature and delay proper diagnosis and treatment. (+info)The effect of slice thickness on the assessment of bone defect volumes by the Cavalieri principle using cone beam computed tomography. (5/24)
(+info)Comparison of rectal and aural core body temperature thermometry in hyperthermic, exercising individuals: a meta-analysis. (6/24)
(+info)Sex determination by linear measurements of palatal bones and skull base. (7/24)
Genetically determined sexual dimorphism is not restricted to reproductive organs. All body structures show sexual differences which emerge during puberty and persist lifelong. The aim of this study is to obtain a reliable method for sex determination through the analysis of linear measurements of palate bones and skull base. One hundred skulls of both sexes, 50 from males and 50 from females, aged between 22 and 55 years, from the Sao Goncalo Cemetery of Cuiaba, capital of Mato Grosso state, Brazil, were analyzed. Distances between the incisive foramen, right and left greater palatine foramens and the basion were measured with a digital caliper. Finally, data were tabulated and statistically analyzed. Measurements showed significant sexual dimorphism, except the distance between the right and the left greater palatine foramens. The superior expression of sex dimorphism corresponded to the distance from the basion to the incisive foramen. The authors obtained two mathematical models for sex determination, with a reliability rate of 63% and 65% respectively. (+info)A working memory deficit among dyslexic readers with no phonological impairment as measured using the n-back task: an fNIR study. (8/24)
(+info)Dimensional measurement accuracy refers to the degree of closeness with which the measured dimension of a object or feature corresponds to its true value. It is usually expressed as a tolerance, which indicates the maximum allowable deviation from the true value. This measurement accuracy can be affected by various factors such as the precision and calibration of the measuring instrument, the skill and experience of the person taking the measurement, and environmental conditions such as temperature and humidity. High dimensional measurement accuracy is essential in many fields, including manufacturing, engineering, and scientific research, to ensure that parts and products meet specified dimensions and function properly.
A cyclotron is a type of particle accelerator that uses a magnetic field and electric field to increase the velocity of charged particles (such as protons or ions) up to high speeds. This device forms a spiral path, with the particles traveling in a circular motion within two flat, semi-circular electrodes called "dees" while being accelerated by an alternating voltage. As the particles reach the outer edge of the dees, they are deflected by a magnetic field and travel through a spiral path, gaining energy with each rotation until they reach the desired energy level.
Cyclotrons are commonly used in nuclear medicine to produce radioisotopes for medical imaging and cancer treatment. They can also be used for research purposes, such as studying the properties of subatomic particles or creating new isotopes for various applications.
In the context of medicine and medical devices, calibration refers to the process of checking, adjusting, or confirming the accuracy of a measurement instrument or system. This is typically done by comparing the measurements taken by the device being calibrated to those taken by a reference standard of known accuracy. The goal of calibration is to ensure that the medical device is providing accurate and reliable measurements, which is critical for making proper diagnoses and delivering effective treatment. Regular calibration is an important part of quality assurance and helps to maintain the overall performance and safety of medical devices.
Reproducibility of results in a medical context refers to the ability to obtain consistent and comparable findings when a particular experiment or study is repeated, either by the same researcher or by different researchers, following the same experimental protocol. It is an essential principle in scientific research that helps to ensure the validity and reliability of research findings.
In medical research, reproducibility of results is crucial for establishing the effectiveness and safety of new treatments, interventions, or diagnostic tools. It involves conducting well-designed studies with adequate sample sizes, appropriate statistical analyses, and transparent reporting of methods and findings to allow other researchers to replicate the study and confirm or refute the results.
The lack of reproducibility in medical research has become a significant concern in recent years, as several high-profile studies have failed to produce consistent findings when replicated by other researchers. This has led to increased scrutiny of research practices and a call for greater transparency, rigor, and standardization in the conduct and reporting of medical research.
In the field of medical imaging, "phantoms" refer to physical objects that are specially designed and used for calibration, quality control, and evaluation of imaging systems. These phantoms contain materials with known properties, such as attenuation coefficients or spatial resolution, which allow for standardized measurement and comparison of imaging parameters across different machines and settings.
Imaging phantoms can take various forms depending on the modality of imaging. For example, in computed tomography (CT), a common type of phantom is the "water-equivalent phantom," which contains materials with similar X-ray attenuation properties as water. This allows for consistent measurement of CT dose and image quality. In magnetic resonance imaging (MRI), phantoms may contain materials with specific relaxation times or magnetic susceptibilities, enabling assessment of signal-to-noise ratio, spatial resolution, and other imaging parameters.
By using these standardized objects, healthcare professionals can ensure the accuracy, consistency, and reliability of medical images, ultimately contributing to improved patient care and safety.
I'm sorry for any confusion, but Fourier Analysis is not a medical term. It is a mathematical concept used in various scientific fields, including physics, engineering, and signal processing.
Fourier Analysis is a method to decompose functions into sinusoidal components (sines and cosines) of different frequencies. This allows for the representation of a function or a signal as a sum of these frequency components. It's particularly useful in analyzing periodic functions, understanding signals, and solving partial differential equations.
If you have any medical terms you would like me to define, please let me know!
An algorithm is not a medical term, but rather a concept from computer science and mathematics. In the context of medicine, algorithms are often used to describe step-by-step procedures for diagnosing or managing medical conditions. These procedures typically involve a series of rules or decision points that help healthcare professionals make informed decisions about patient care.
For example, an algorithm for diagnosing a particular type of heart disease might involve taking a patient's medical history, performing a physical exam, ordering certain diagnostic tests, and interpreting the results in a specific way. By following this algorithm, healthcare professionals can ensure that they are using a consistent and evidence-based approach to making a diagnosis.
Algorithms can also be used to guide treatment decisions. For instance, an algorithm for managing diabetes might involve setting target blood sugar levels, recommending certain medications or lifestyle changes based on the patient's individual needs, and monitoring the patient's response to treatment over time.
Overall, algorithms are valuable tools in medicine because they help standardize clinical decision-making and ensure that patients receive high-quality care based on the latest scientific evidence.
Cave diving
Underwater exploration
Structured-light 3D scanner
Curtis Earle Lang
Underwater acoustic positioning system
Dragon Hole
Treefall gap
Coastline paradox
Electromagnetic articulography
Ejection fraction
Single photon absorptiometry
Measurement-assisted assembly
VIEW Engineering
Bathymetry
Anemometer
High Resolution Wide Swath SAR imaging
Spring Back Compensation
Stock (firearms)
Particle image velocimetry
Coordinate-measuring machine
Conversion of units
Surveying
Passive radar
Numerical model of the Solar System
Optical transfer function
Unmanned aerial photogrammetric survey
Decibel
Closed-loop manufacturing
Inclinometer
X-ray motion analysis
Pseudo-range multilateration
"Three-Dimensional Computed Tomography Measurement Accuracy of Varying " by Anthony Ho, Michael D Kurdziel et al.
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Dimensional Measuring
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SIG Meeting: Advancing Precision in Additive Manufacturing : 19th - 21st September 2023 - euspen
Metrology7
- Fundamental requirements for using CT systems as coordinate measuring systems (CMSs) for traceable coordinate metrology are the study of measurement accuracy and the establishment of traceability to the unit of length, the meter. (4nsi.com)
- Both must be established through force and dimensional metrology with acceptably small measurement uncertainties. (nist.gov)
- Today laser interferometers are the essential tool for metrology in semiconductor manufacturing where they are used for pattern placement measurements on photomasks and for position control in wafer scanners. (euramet.org)
- NPL led a seminar giving a short introduction to coordinate measurement, which explored the challenges posed by modern technologies facing metrology engineers and outlined NPL's training opportunities. (npl.co.uk)
- The measurement deviations in CMM metrology can be related to the operator performance quality, environmental interaction, and CMM performance accuracy. (hindawi.com)
- Uncertainty in measurement is the most important concept in roundness metrology according to the GUM and attracts wide attention in the world to confirm the confidence in measurement result [ 6 ]. (hindawi.com)
- Metrology, testing and design laboratories use height gauge extensively to check dimensional accuracy of produced lot and creation of prototypes, respectively. (factmr.com)
Computed tomography4
- Three-Dimensional Computed Tomography Measurement Accuracy of Varying " by Anthony Ho, Michael D Kurdziel et al. (beaumont.org)
- Three-Dimensional Computed Tomography Measurement Accuracy of Varying Hill-Sachs Lesion Size. (beaumont.org)
- This study aimed to assess the accuracy and reliability of measuring Hill-Sachs lesion sizes using 3-dimensional (3D) computed tomography (CT). (beaumont.org)
- Following the successful launch of the first international Dimensional X-ray Computed Tomography Conference at NPL in 2016, NPL partnered with the Warwick Manufacturing Group (WMG), University of Warwick, who hosted the second DXCT Conference in July 2017. (npl.co.uk)
Traceable2
- These calibrations are traceable to dimensional standards. (nist.gov)
- Comes with a non-traceable manufacturer's certificate stating average pitch, based on batch measurements. (tedpella.com)
Topography measurements1
- 2017): Inline surface topography measurements of ultrashort laser pulsed manufactured micro structures based on low coherence interferometry, Fraunhofer IPT 2017. (fraunhofer.de)
Surfaces4
- CMM is typically numerical control system that can be used for dimensional inspection of complex 3D geometry product surfaces. (hindawi.com)
- The influence of dimensional and geometrical form errors is one of the most issues of interest regarding the manufacturing accuracy and surfaces quality. (hindawi.com)
- ProSpeed LSVs from Polytec are ideally suited because they can conduct measurements on almost any surface and they are not susceptible to contaminated surfaces. (polytec.com)
- Due to the non-contact measurement principle, these laser sensors eliminate common problems of traditional contact-wheel measurement methods such as damage to delicate surfaces, slippage and thermal expansion and work on almost any surface. (polytec.com)
Thickness2
- BMI was used as an indirect measure of body thickness when calculating the TBS scores, because TBS measurements are affected by body thickness. (cdc.gov)
- Use of BMI in the calculation improves the accuracy and compabarability of TBS measurements across participants with varying body thickness. (cdc.gov)
Uncertainty3
- In particular, the assessment of measurement uncertainty, which is essential for traceability establishment, is one of the most critical tasks. (4nsi.com)
- The physical structure of a CT system is therefore itself a source of measurement uncertainty. (4nsi.com)
- To calibrate these instruments and estimate their measurement uncertainty, their metrological characteristics need to be determined according to ISO 25178 part 600. (researchgate.net)
Characterization2
- The measuring module offers high-resolution and submicrometric-accurate dimensional characterization of the surface geometries and is also capable of producing tomographic images of semi-transparent materials. (fraunhofer.de)
- Low-coherent interferometry offers very high resolution for geometric distance measurements and achieves very high accuracies in the characterization of component features. (fraunhofer.de)
Inspection2
- The new CyberGage360 from CyberOptics offers an unprecedented combination of speed, accuracy and one-button simplicity for non-contact automated 3D scanning inspection. (ems-usa.com)
- Innovmetric's Polyworks software suite is the recognized leader in dimensional inspection analysis for industrial product design and manufacturing. (ems-usa.com)
Surface6
- Surface plates are the basis for the accuracy of your company's dimensional measurements. (qualitydigest.com)
- In this paper, the amplification coefficient and linearity deviation metrological characteristics in the vertical axis of a prototype compact on-machine focus variation areal surface texture and form measurement sensor are determined. (researchgate.net)
- surface texture and form measurement sensor are determined. (researchgate.net)
- Optical three-dimensional (3D) surface-shape measurement has diverse applications in engineering, computer vision and medical science. (uwaterloo.ca)
- The changes in the ice surface elevation were measured with millimetre accuracy, allowing important conclusions to be drawn about the underlying melting processes. (dlr.de)
- Laser surface velocimeters (LSVs) are easy to integrate and enable reliable measurement of the velocity component. (polytec.com)
Fracture5
- These include measurement of fracture re-opening pressure and various techniques of shut-in pressure analysis. (onepetro.org)
- Experiment data from actual field measurements indicate that, contrary to general belief, the fluid pressure drops rapidly and significantly along the fracture length. (onepetro.org)
- This has a domino effect on the other principal stress measurements based on fracture breakdown pressure. (onepetro.org)
- To clarify the injury mechanism of the avulsion fracture of the fifth metatarsal combining 3-dimensional (3D) fracture mapping with anatomical measurements. (researchsquare.com)
- Therefore, in this study, we investigated the fracture three-dimensional distribution characteristics in the fifth metatarsal base avulsion fractures and conducted an anatomical study on the attachment site locations for the lateral band of the plantar fascia, peroneus brevis, and the peroneus tertius on the fifth metatarsal base. (researchsquare.com)
Optical2
- Creaform 3D scanners & optical CMM systems offer high resolution, high accuracy and portability in a 3D scanning system. (ems-usa.com)
- Accuracy of milled models fabricated from optical impressions (iTero system). (umich.edu)
Calibration3
- They enable accurate calibration for high resolution, nanometer-scale measurements. (tedpella.com)
- Precision holographic pattern for accurate calibration for high resolution, nanometer scale measurements. (tedpella.com)
- General Purpose Event Generators [1- 3] form a crucial component of studies in high-energy physics, since they produce detailed predictions used for the design and calibration of detectors, interpretations of the measurements as well as the investigations of theoretical models. (lu.se)
Fulldent1
- ABSTRACT This study was carried out to measure the dimensional changes in silicone impression material,whichcanaffectthefitnessoftheprosthesis.Usingbothsingleanddoublemixtechniques,20 impression samples for each of 3 different proprietary silicones, Xantopren-H, President and Fulldent, were made. (who.int)
Laboratory2
- Laboratory accuracy measurements were obtained on an acrylic resin model with standardized target holes drilled by a computerized numerical control machine. (quintpub.com)
- This adds additional capabilities to their existing hi accuracy fixed CMM's present in the temperature controlled dimensional laboratory. (incompliancemag.com)
Viscosity1
- The use of real time, in situ measurements of lubricant/refrigerant viscosity can reduce maintenance costs and system downtime and improve system longevity, by allowing maintenance personnel to determine identify and correct mechanical problems, before they cause more serious problems. (nist.gov)
Geometric2
- An error in the determination of the CT system geometry (i.e. geometric set-up) or the presence of geometrical errors not accounted for during the reconstruction could affect all the subsequent steps in the measurement chain and could lead to artifacts, distortions and measurement errors in the reconstructed volume [2]. (4nsi.com)
- Studying the influence of the geometric fitting algorithms and probe scanning speeds on the measurement error can be an interesting topic for a future research, especially with the growing use of CMM machines [ 2 - 5 ]. (hindawi.com)
Enables3
- The Dimensionics Disionic Sheet Control measuring table enables fully automatic dimensional accuracy testing of sheet metal. (micro-epsilon.com)
- Enables 3-dimensional mapping of open spaces with absolute accuracy of within 10 cm and relative accuracy of within 1 cm. (aisantec.co.jp)
- It enables tracking experiment metrics like loss and accuracy, visualizing the model graph, projecting embeddings to a lower dimensional space, and much more. (tensorflow.org)
Uncertainties2
- The resultant measurement quality of CMM is limited by deviation and some uncertainties due to different factors. (hindawi.com)
- The statistical study based on design of experiment was accomplished in order to evaluate the measurement result and estimate the expanded uncertainties. (hindawi.com)
Evaluate5
- The aim of this study was to evaluate the 3-dimensional (3D) accuracy of navigation-guided drilled holes. (quintpub.com)
- However, in vivo clinical trials need to be performed to evaluate the clinical accuracy and treatment quality of navigation-guided interventions. (quintpub.com)
- A number of studies have been carried out to evaluate the accuracy of impression techniques [4-8]. (who.int)
- Aim: The objective of this study was to 5 evaluate the dimensional stability os the molds of two different alginates (Cavex Color Changer and Hydrogum®5), at different intervals, kept in environments, as recommended by manufacturers, using two different devices (D1 and D2, figures 1 and 2, respectively). (bvsalud.org)
- A number of stude (the grooves would then be duplicated on ies have been carried out to evaluate the the stone casts produced from the experie accuracy of impression techniques [ 4-8 ]. (who.int)
Analysis2
- Among the influence factors affecting CT measurement chain, the study and analysis of CT system geometrical errors is of primary importance. (4nsi.com)
- Stoke's law (derivation from dimensional analysis) and its application. (successcds.net)
Developments1
- Nearly 100 delegates from across industry and academia attended the conference to discuss the latest developments in dimensional XCT. (npl.co.uk)
Calibrate1
- This QC monitor will initially provide a portable measurement standard to calibrate the existing network and will eventually replace existing instruments. (nist.gov)
Kinematic2
- Gaia will provide unprecedented positional and radial velocity measurements with the accuracies needed to produce a stereoscopic and kinematic census of about one billion stars in our Galaxy and throughout the Local Group. (esa.int)
- Currently, portable kinematic sensors include inertial measurement units (IMUs) and markerless motion capture (MMC), but each has limitations. (cdc.gov)
Geometrical2
- It is evident therefore that it is extremely important to investigate and quantify the influence of CT system geometrical errors on CT measurements. (4nsi.com)
- The measurement results of dimension and geometrical form at different CMM strategies have been studied. (hindawi.com)
Geometry1
- In fact, the system geometry provides the necessary information to fully describe the geometry of data acquisition and performing the tomographic reconstruction on which all the dimensional analyses are based. (4nsi.com)
Motion1
- The purpose for this feasibility study was to compare the accuracy of PBAS lumbar (L5/S1) and lower extremity biomechanics to a traditional motion capture system (TMCS). (cdc.gov)
Metrological1
- Because of the multitude of these influencing quantities and the complexity and non-linearity of their interaction, CT measurements traceability is a major challenge for metrological applications. (4nsi.com)
Stability2
- The main Phase 1 research objective is to demonstrate the required measurement stability (one part per thousand). (nist.gov)
- This stability will be converted to accuracy in Phase 2 using the ozone ultraviolet absorption standard and chemical titration to transfer this standard to NO and NO2. (nist.gov)
Abstract1
- ABSTRACT This study was carried out to measure the dimensional changes in silicone impression material, which can affect the fitness of the prosthesis. (who.int)
Experimental4
- In this work, different sets of CT experimental investigations, performed with a calibrated ball plate, were specifically designed to investigate the effects of CT system detector angular misalignments on CT measurement results. (4nsi.com)
- Experimental diameter and height measurements of the folded locking nut are compared with those obtained from the optimized model. (techscience.com)
- Reference grooves to be used as measurement points were first cut on the master cast using a wide, straight fissure bur (the grooves would then be duplicated on the stone casts produced from the experimental impressions). (who.int)
- More often than not it is necessary to take into account the effects from the perturbative showering and the hadronisation models implemented in these generators, in order to achieve an accurate prediction for the cuts and observables chosen for experimental measurements. (lu.se)
Stone casts2
- Selected measurements were made on the stone casts made from each impression. (who.int)
- These measurements were carried out in (JTCeFulldent SA, Arsier, Switzerland) duplicate for the casts made from each of were used to prepare stone casts (GC Come the 3 materials and the mean distances cale pany, Tokyo). (who.int)
Pitch2
- 145nm pitch nominal, one dimensional array. (tedpella.com)
- In this study, this ability was investigated by evaluating the two-dimensional distributions of the pitch locations of 15 pitches to three target positions in university students with and without baseball experience. (frontiersin.org)
Additive1
- Three-dimensional printing (3DP) is one of the additive manufacturing technologies which is recommended to be used in construction. (intechopen.com)
Methods of measurement2
- We develop new methods of measurement: in our striving for innovation we continuously work to improve our processes in order to always give you the best results. (khs.com)
- Atomic astronomical range of variation of these physical quantities, different methods of measurement for different magnitudes of the same physical quantity. (successcds.net)
Velocity2
- The increased accuracy of velocity measurement allows you to monitor the velocity differencemore closely. (polytec.com)
- In the largest aluminum smelting and rolling plant in the world, the length and velocity of aluminum sheets in the manufacturing process are measured simultaneously using non-contact laser Doppler measurement technology from Polytec. (polytec.com)
Conventional1
- Measured values on 3D and 2-dimensional imaging using a conventional CT scanner may slightly underestimate true measurements. (beaumont.org)
Diagonal1
- The third measurement (diagonal) was taken from the left first premolar to the mesiobuccal cusp tip of the right second molar [10]. (who.int)
RESULTS5
- After characterizing the effects produced by each detector angular misalignment on CT measurement results, the paper shows results from NSI proprietary automatic method that effectively corrects for detector misalignments providing a significant enhancement of CT measurement accuracy. (4nsi.com)
- Bias - a systematic distortion of measurements that makes the results inaccurate. (cdc.gov)
- On the basis of their experience and the measurement results, the experts then decided on how to proceed with the restoration process. (porsche.com)
- The repeatability of results was established, and the accuracy of the instrumentation estimated. (caltech.edu)
- The results demonstrate accuracy of less than half a centimetre using Microsoft Kinect II. (theiet.org)
Passages1
- 1-dimensional version of the nasal passages have the same inspira- carcinogen in rats and mice. (cdc.gov)
Dimensions2
- Apt and precise measurement of work piece or product dimensions play a very important role in manufacturing and fabrication of various products. (factmr.com)
- Height gauge is utilized in measurement of these dimensions across various end-use industries. (factmr.com)
Provide1
- The spine scans provide bone measurements for the total spine and vertebrae L1 - L4. (cdc.gov)
Accurate1
- The laser pulses allow measurements to be taken in the order of 100,000 times per second with a vertical accuracy of 0.5cm which produces a dense cloud of points which can then be interpolated to produce an accurate three dimensional model of the landscape below. (data.gov.uk)
Diameter1
- Moreover, some error formulae of data sets have been postulated to correlate the diameter and roundness measurements within the application range. (hindawi.com)
Mechanical1
- The quality of goods or the products manufactured depends upon the co-ordinate accuracy and precision of engineering work-pieces, machine components, assemblies, fasteners, mountings and other mechanical parts. (factmr.com)
Study5
- The purpose of this study was evaluation of delivered dose accuracy for segmented breath-hold VMAT. (hindawi.com)
- The technical accuracy and the navigation procedure, as evaluated in the study presented, seem to be of minor influence. (quintpub.com)
- The data obtained by this in vitro study demonstrate that the accuracy of navigation-based drilling may be sufficient for clinical practice, particularly in terms of the transferability of preplanned trajectories. (quintpub.com)
- This study was carried out to examine the dimensional accuracy of 3 silicone impression materials and the single and double mixing techniques for each of them. (who.int)
- We calculated accuracy measurements with 95% CIs for the overall study period and for each study year, age group (5-14 vs. (cdc.gov)
Percentage2
- The interclass correlation coefficient evaluated interobserver and intraobserver variability and percentage error, and Student t-tests assessed measurement accuracy. (beaumont.org)
- Percentage error between measured length and measured depth and the true measurement significantly varied with respect to both lesion depth (P = .003 and P = .005, respectively) and lesion size (P = .049 and P = .004, respectively). (beaumont.org)
Model1
- mate local fluxes in a 3-dimensional model of the nasal region. (cdc.gov)
Dose4
- Accuracy of dose delivery in multiple breath-hold segmented volumetric modulated arc therapy (VMAT) was evaluated in comparison to noninterrupted VMAT using a static phantom. (hindawi.com)
- The segmented VMAT delivery was compared to noninterrupted VMAT delivery in terms of the isocenter dose and pass rates of a dose difference of 1% with a dose threshold of 10% of the maximum dose on a central coronal plane using a two-dimensional dosimeter, MatriXX Evolution (IBA Dosimetry, Schwarzenbruck, Germany). (hindawi.com)
- However, accuracy of delivered dose in segmented breath-hold VMAT has not been reported. (hindawi.com)
- Five VMAT plans (three for liver and two for lung) were randomly chosen from previously delivered clinical plans, and accuracy of dose delivery in multiple breath-hold segmented VMAT was evaluated in comparison to noninterrupted VMAT. (hindawi.com)
Complex2
- Due to their complex nature, CT scanning technology and thus CT measurements are affected by multiple error sources that complexly interact in the measurement chain. (4nsi.com)
- It's capable of producing complex functional prototypes and mechanically impressive end-use components quickly and with high degrees of accuracy. (hubs.com)
Applications1
- The major challenge of implementing the 5D BIM technology and applications is the interoperability between technologies and the low accuracy of measurement estimations. (intechopen.com)
Scans1
- There is sufficient usable area to make tens of thousands of measurements without reusing any areas contaminated or altered by previous scans. (tedpella.com)
Quality2
- It can be assumed that some important factors such as operator behavior and CMM software accuracy have effective reaction on the measurement quality. (hindawi.com)
- The metal processing industry has high standards when it comes to the dimensional accuracy and quality of steel and aluminum products. (polytec.com)
System2
- Coordinates of drilled holes were determined by a 3D-digitizer probe, and accuracy was assessed for all 5 degrees of freedom using a computer-aided design system (Pro/Engineer). (quintpub.com)
- The Mobile Mapping System (MMS) is a high-accuracy mobile 3D measurement system capable of efficiently acquiring precise 3D position data including buildings, road shape, signs, guardrails, characters printed on roads, manholes, and area surrounding the road while driving. (aisantec.co.jp)
Errors2
- Accuracy and errors in measurements. (successcds.net)
- Accuracy has been studied in terms of reducing errors against a single target, but also in terms of distinguishing appropriate throws for targets in different positions. (frontiersin.org)
Primarily2
- Both technologies have been primarily focused on measurement of protein epitopes, but have been used to measure nucleic acids such as targeted mRNA 11 , 12 . (nature.com)
- Unfortunately, accuracy improvements in throwing have received less attention compared to speed enhancements, primarily due to the complexities involved in measurement ( 3 ). (frontiersin.org)
Principle1
- The various methods of in-situ stress measurement are all based on this same principle. (onepetro.org)
Systems1
- Offering the best tool for every accuracy, both IFM and ADM tracker systems will take care of all of your advanced measurement needs. (ems-usa.com)
Reliability1
- As the measurement is free of slippage you can control the process to ensure high reliability, even during start-up processes and right up until deceleration, thereby increasing product output. (polytec.com)
Quantity2
- Dynamo is adopted in this chapter for detailed quantity measurement. (intechopen.com)
- Because the arrival position at the throw is a two-dimensional quantity in the horizontal and vertical directions, the error is also a two-dimensional quantity. (frontiersin.org)
High accuracy3
- These calibrations show high accuracy and long term reproducibility. (nist.gov)
- This project will develop a high accuracy monitor for the photo-chemically coupled pollutants nitric oxide, nitrogen dioxide and ozone using infrared absorption spectroscopy with quantum cascade (QC) lasers. (nist.gov)
- High-accuracy perturbative event generator predictions can be obtained by first match- ing each jet multiplicity to next-to-leading order (NLO) using the methods of e.g. (lu.se)
Clinical1
- Specimens were scanned with a clinical CT scanner for size measurements and a micro-CT scanner for measurement of true lesion size. (beaumont.org)
Depends3
- The accuracy of image-guided navigation depends on imaging modalities, patient-to-image registration procedures, and instrument tracking. (quintpub.com)
- Accuracy of impressions depends on the composition and manipulation technique of the impression as well as the die cast material itself [1,3]. (who.int)
- Accuracy of impressions depends on Reference grooves to be used as mease the composition and manipulation teche urement points were first cut on the mase nique of the impression as well as the die ter cast using a wide, straight fissure bur cast material itself [ 1,3 ]. (who.int)
Impressions1
- Measurements of the resin master the impressions were mixed following the cast were taken in a similar manner as for manufacturer's instructions. (who.int)
Precise1
- The dimensional accuracy of sheet metal can be checked using a Dimensionics measuring table equipped with precise laser profile sensors from Micro-Epsilon. (micro-epsilon.com)