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1 edition of Factors influencing the quantitative measurement of the roentgen-ray absorption of tooth slabs found in the catalog.

Factors influencing the quantitative measurement of the roentgen-ray absorption of tooth slabs

Factors influencing the quantitative measurement of the roentgen-ray absorption of tooth slabs

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Published by s.n. in [S.l .
Written in English


Edition Notes

Reprinted from: The American Journal of Roentgenology and Radium Therapy (issues from 1935 to 1938)

Statementby Harold Hodge ... [et al.].
ID Numbers
Open LibraryOL14813821M

ROENTGEN-RAY MEASUREMENTS 4% enough away from the measuring chamber, only the absorbed ra- diation was measured, therefore the stray rays were not measured. IYith the second measurement, a wax plate 20 X 20 em was used of the same thickness as the measuring chamber, and provided with a slot into which the chamber fitted. With this arrangement the. The presented volume of the journal "Nano Hybrids and Composites" offers readers attention a collection of peer-reviewed articles covering some practical aspects in the research of properties and application of the micro- and nano-hybrid composite materials, synthesis of polymer composites, high-performance concrete in construction, the nanomaterials for sensors and solar cells.

X-ray photon quantity refers to the number of photons produced during an exposure. Factors influencing x-ray quantity includes: peak voltage (kVp): beam quantity is approximately proportional to the square of the tube potential generator type/. General expression for quantitative X-ray fluorescence analysis 87 Numerical examples 89 * Summary 90 Chapter 4. FUNDAMENTAL INFLUENCE COEFFICIENTS 93 General Considerations 93 The Concept of Influence Coefficients 94 The Domain of Fundamental Influence Coefficients 95 Initial Developments 95 von Hamos

Factors Affecting Attenuation. STUDY. Flashcards. Learn. Write. Spell. Test. PLAY. Match. Gravity. Created by. aleiah. Terms in this set (7) Tissue Thickness-Increasing thickness increases beam attenuation by either absorption or scattering-Attenuated exponentially and generally reduced by approximately 50% for each cm ( in)-More x.   Introduction. In Chapter 21 we considered the mechanisms by which X-rays were produced at the anode of the X-ray tube. In this chapter we will consider the various factors which influence the quantity and/or the quality of the X-ray beam and hence its intensity at a given point. Before we look at this in any more detail, it is first important to ensure that we understand the meaning of.


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Factors influencing the quantitative measurement of the roentgen-ray absorption of tooth slabs Download PDF EPUB FB2

Hodge HC,Van Huysen G, Warren SL () Factors influencing the quantitative measurement of the roentgen-ray absorption of tooth slabs. III. Mechanical factors of tube and machine. Am J Roentgenol Radiat Ther – Google ScholarCited by: 4.

Factors Influencing the Quantitative Measurement of the Roentgen-ray Absorption of Tooth Slabs. VII. Sensitometric Factors, Am. EoentgenolCited by: The major factors affecting roentgen- ographic contrast are the contrast characteristics of the film, the absorption characteristics of the object under examination, and the KVP used in making the x-ray exposure.* Of these three factors, only the KVP is under the direct control of the by: H.C.

Hodge, G. Van Huysen, S.L. WarrenFactors Influencing the Quantitative Measurement of the Roentgen-Ray Absorption of Tooth Mechanical Factors of the Tube and MachineCited by: Hodge HC, Bale WF, Warren SL, van Huysen G () Factors influencing the quantitative measurement of the roentgen-ray absorption of tooth slabs.

Am J Roentgenol – Google Scholar Hopper JL, Seeman E () The bone density of twins discordant for tobacco by: Hodge HC, vanHuysen G, Warren SL () Factors influencing the quantitative measurement of the Roentgen ray absorption of tooth slabs.

Am J Roentgenol – This technique may prove useful for the quantification of changes in mineral density of caries lesions detectable in longitudinal radiographic records. MEAN PLANIMETRIC AREA (±S.D.), HEIGHT (+S.D.

Recent theoretical calculations of k AB factors are evaluated and new constants in the parametrization of ionization cross‐sections for L and M lines are presented.

The average X‐ray production per unit thickness has been measured as a function of mass thickness for a stainless steel specimen using acceleration voltages of and kV.

used and technical factors influencing these measure- son of quantitative ultrasound measure- A quantitative method for studying the roentgen-ray absorption of tooth slabs.

Article. The results suggest that this measurement device has the ability to monitor the healing process of bone and to analyse the influence of degradable implants on the mechanical behaviour of bone or. Orthodont. (Aug ) 9. H.M. Muncheryan, Modern Physics of Roentgenology 2 () Wetzel Publishing Company Los Angeles H.C.

Hodge, Factors Influencing the Quantitative Measurement of the Roentgen-Ray Absorption of Tooth Slabs. Absorption Coefficient Factors others Am. Roentgenol. (Dec ) Ritter Model B. Distraction osteogenesis is used in orthopedics to lengthen bones by cutting or breaking the bone and gradually separating the two pieces as new bone fills the intervening space.

There is a need for early assessment of the degree of bone healing that allows for normal functioning without unwanted side effects. This study compared different techniques used to evaluate the degree of bone healing.

H.C. Hodge, G. Van Huysen, S.L. WarrenFactors Influencing Quantitative Measurement of Roentgen-Ray Absorption of Tooth Slabs; Radiation Factors Am. Roentgenol, 34 (), pp. View Record in Scopus Google Scholar.

Measurements were made with field diameters of 1, 2, 4 and 8 cm at 60 and 90 kVp. All images used for evaluation had the same density (D = ) in the apical area. Elsasser, U. and P. Ruegsegger. 'Fruhzeitige quantitative Erfassung von Veranderungen der Knochenmineralisation mittels Digitaitomographie, Vortrage der Fachtagungen Medex 79 vom 'Factors influencing the quantitative measurement of the roentgen-ray absorption of tooth slabs, theory of the step tablet'.

Roentgenol. Correlation between the density measurements in mm Al eq and the DXA results wasfor the density measurements in mm Al eq and the direct density measurements r was resolve detailed temperature measurements in a thermal image is influenced by image focus, blur, and the pixel resolution.

The influence of each of these factors on measurement accuracy is highly dependent on the specific measurement application and each must be accounted for and resolved.

Thermal Imaging System Atmospheric Effects. Quantitative Radiographic Measurement of Dentinal Lesions Show all authors. T.J. Heaven. Warren, S.L. ; and Van Huysen, G. (): Factors Influencing the Quantitative Measurement of the Roentgen-ray Absorption of Tooth Slabs, Am J Roentgenol Keywords: IQI, Quantitative, Qualitative, sensitivity, contrast, definition, geometric un-sharpness INTRODUCTION The basic principle for the detection of anomalies using radiographic testing method is the difference in radiation absorption coefficients properties exhibits by different materials.

The. The fractal dimensions of material surfaces are of interest because they can be related to material performance. Such surfaces include the fracture surfaces of broken specimens, surfaces abraded by airborne particles, and surfaces upon which coatings of another material have been applied.

Scientists who study the fracture surfaces of failed medical implants stand to benefit greatly from. Access to society journal content varies across our titles.

If you have access to a journal via a society or association membership, please browse to your society journal, select an article to view, and follow the instructions in this box.Roentgen-Ray Measurements. All the measurements were made with a Victoreen condenser type thimble chamber at cm.

distance and tube currents varying from to ma. The kilovoltage was varied at will throughout the to 1, kv. range without incident. Because of filament limitation by space charge, a maximum of ma.

at kv. was used.Factors influencing the quantitative measurement of the roentgen‐ray absorption of tooth slabs Hodge, H. C.; Bale, W. F.; Warren, S. L.; Huysen, G. New development in equipment for the roentgenographic measurement of bone density.