A-P radiographs

Distribution of LWRs and VWRs estimated in a first-generation modular acetabular component design (Harris-Gallante Zimmer Warsaw, IN). These graphs show the tendency for the wear rates to decrease with implantation time. Results are compared based on analysis of A-P radiographs alone (two-dimensional), as well as based on the combined analysis of A-P and lateral radiographs (three-dimensional). (Based on data provided courtesy of J. Martell, M.D.)... 

Failure of an IB I knee replacement after 14 years in vivo due to wear of the UHMWPE component. (A) Standing A-P radiograph shows narrowing of the joint space in the medial compartment (indicated by arrows). (B) The retrieved UHMWPE component was worn completely through on the medial side. The tibial tray was polished (i.e., burnished) from articulation with the femoral component. Severe metallosis of the surrounding tissues was... 

Osteolysis in the knee on A-P and lateral radiographs. A large osteolytic lesion is present in the lateral and anterior... 

Venable, using techniques similar to those described in reference 45 and the PHERMEX radiographic facility, determined the behavior of a P-081 Baratol lens initiating 10.16 cm of 9404 with 0.00127-cm-thick tantalum foils embedded every 0.638 cm. The effective C-J pressure for 5 cm of 9404 initiated by a P-081 Baratol lens is 365 kbar. The tantalum foils are expected to interrupt the build-up process, and the effective C-J pressure for 9404 with tantalum foils would be less than 365 kbar (the pressure with no tantalum foils), but greater than 300 kbar (the effective C-J pressure for 0.638 cm of 9404 initiated by a 0.1-cm-thick tuballoy plate driven by 9404). 

Figure 4.22 Static and dynamic radiograph 1697 of PBX-9502 shocked by a 0.635 cm thick steel plate going 0.08 cm//xsec and initiated by 2.54 cm of TNT and a P-40 lens.

The calculated density contour plots for a P-040 lens are shown in Eigures 5.35 through 5.37 at 2.625, 4.725, and 6.825 microseconds. The radius is plotted horizontally and the axial Z is plotted vertically. The Baratol cone remains approximately static throughout the sequence. The circles on the Figures mark the experiment points read from the radiographs and correlated in time with the numerical calculations. The radiographs were from Shots 630, 631, and 632 described in detail in reference 5. 

Figure 5.35 The calculated density contours for a P-040 plane wave lens after 2.625 jusec. The circles mark the experimental points read from the radiograph from Shot 630.

L.G. Petersson, L. Arthursson, C. Ostberg, P. Jonsson, A. Gleerup, Caries-inhibiting effects of different modes of Duraphat varnish reapplication A 3-year radiographic study. Caries Res. 25 (1991) 70-73. 

Anon, "Military Explosives , TM 9-1910 (1955), 77-85 (Munroe effect) 43) PATR 2145(1955), p Rus 15 (Russian shaped charge projectiles of WWH) 44) L.S. Holloway, Flash Radiographs Showing the Collapse Process of Copper Shaped Charge Liners , BRL Rept No 941 (1955) 45) A.M. 

In radiographic investigations the image of an object is distorted if the X-rays strike the photographic plate at an oblique angle. In order to calibrate the distortion a spherical ball is investigated. The image is an ellipse with centre (p j 2) and further parameters P3 p and P5 as described by the equation... 

Losco P, Nash G, Stone P, Ventre J. Comparison of the effects of radiographic contrast media on dehydration and filterability of red blood cells from donors homozygous for hemoglobin A or hemoglobin S. Am J Hematol 2001 68(3) 149-58. 

The three stations chosen for study—FOAM, NWC, and DEEP—are located in predominantly silt-clay regions of central Long Island Sound and lie in 9,14, and 34 m of water, respectively. The location, description, faunal analysis, and examples of x radiographs of sediment at these stations are given in detail in this volume. Part I, p. 238, and will not be repeated here. The three stations represent a general inshore-offshore transect running from FOAM to DEEP. 

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