Edward S. Kenney's research while affiliated with Pennsylvania State University and other places

Publications (18)

Article
A new radiographic device, based upon the analysis of scattered radiation fields, has been developed to measure myocardial dynamics. The device consists of an array of detectors arranged to monitor photons scattering from the epicardial surface. Data synthesis permits real-time dynamic displays of the epicardial surface in two and three dimensions....
Conference Paper
A new radiographic system has been developed for use in mapping three-dimensional epicardial motion. The new radiograph consists of an array of detectors arranged such that they monitor 1 cm strip of scattering photons along a contour across the cardiac surface. Synthesis of the detector data permits immediate display of the beating cardiac contour...
Article
An improved gas flow system is described for the production of87Br through a fast radiochemical separation of fission products from a solution of235U irradiated with thermal neutrons. It can produce87Br with a higher yield relative to88Br than was previously possible for measurement of neutron energy distribution. Contrary to previous indication, l...
Article
A method is presented for calculating γ-ray induced response of a proton recoil counter exposed to a mixed field of γ-rays and neutrons from a simultaneous measurement of γ-ray spectrum by a NaI(Tl) scintillation crystal. The γ-ray spectrum was then used to calculate the equivalent proton recoil counter spectrum using two sets of matrices which wer...
Article
The basic detection system used for dynamic radiography is reviewed. Some practical factors are discussed in the application of dynamic radiography to the mapping of epicardial motion in canines. A fluoroscopic aiming technique is described for hitting specific points on the cardiac silhouette. The development and design of an automatic control sys...
Article
The delayed neutron spectrum from 87Br beyond 100 keV was measured by a methane filled proton recoil proportional counter. Major peaks were observed at 131 and 192 keV and much smaller peaks at 261, 337, 420, and 520 keV. The observed spectrum is significantly softer compared to the previously reported data.
Article
The essential concepts of dynamic radiography are discussed and the apparatus and methods used to monitor surface motion are described. Initial experiments with a model simulating the heart-lung interface are presented to demonstrate the manner in which the physical properties of a dynamic system may be interrogated. A cardiac study with anaestheti...
Article
Using well-established nuclear engineering methods, an interesting new ; radiation imaging technique has been developed. Scattered neutrons and photons ; have been found to carry detailed information about the dynamics of the internal ; structure of an opaque object. Employing coded apertures and systems of ; collimators, scattered radiation fields...
Article
Dynamic nondestructive inspection of optically opaque systems can be accomplished using a dynamic radiography technique with thermal neutrons as the illuminating radiation. Dynamic radiography correlates the useful information in scattered radiation from vibrating objects. The information generally takes the form of three-dimensional frequency spec...
Article
A non-invasive technique, utilizing scattered radiation, has been developed to monitor and measure the motion of the epicardial surface during fluoroscopy. A number of dogs were studied using a monitoring device which consists of an X-Ray beam collimator, collimated sodium iodide dectetors and their associated electronics. The detector signals are...
Article
Dynamic radiography is a high resolution technique using finely collimated radiation detectors to analyze the scattered component of penetrating radiation (e.g. x-rays, gamma rays, and neutrons). Inherent or induced periodic motions (vibrations) within a subject produce a complex modulation pattern in the scattered radiation field. This modulation...
Article
A MAJOR obstacle to the formation of images with scattered X rays is the lack of a suitable X-ray lens. Radiation at such short wavelengths is not appreciably refracted by matter, which means that a lens, in the optical sense of the word, cannot exist. To overcome this difficulty, a concept can be applied which has previously been used to form an i...
Article
Thermal neutron diffraction has been studied using single and double quartz crystal systems vibrating in the compressional and flexure modes. A spectral shift has been noted for a vibrating crystal resulting in an increase in most probably diffracted neutron wavelength from 2.2 Å to 2.9 Å. Double crystal diffraction was found to yield a 95% surviva...
Conference Paper
The general ideas embodied in the dynamic radiography technique are described, results of a simple demonstration experiment using gas-liquid flow are given, and some future applications radiography is in a very early stage of development, all measurements so far accomplished have yielded results which indicate that it is a precision and sensiti...
Conference Paper
Studies of the mechanics of motion of the human body have developed to the point where accurate determination of body segment parameters is essential. However, little data has been available on body parameters such as mass, center of mass, and moment of inertia of the major body segments.
Article
Eighteen papers were presented at the conference. Primary topics included: dynamic radiography - a new imaging technique using penetrating radiation; silver halide x-ray film for high-light-level handling; ultrasonic isometric imaging; acoustic holographic scanning techniques for imaging flaws in thick metal sections; new applications for infrared...

Citations

... These include using data based on cadavers (Depster, 1955;Dempster and Gaughran, 1967;Clauser et al., 1969), dual energy X-ray absorptiometry (Durkin et al., 2002), magnetic resonance imaging (Martin et. al., 1989;Pearsall et al., 1994), computer tomography (Pearsall et al.,), gamma ray scanning (Casper et al., 1971), surface 3D scanning combined with computer aid design (Ma et al., 2011). ...
... Fox and Cart (4) first observed a change in the intensity of X-rays diffracted from piezoelectrically vibrated quartz plates. Since then considerable interest has been paid in this phenomenon (10,16,17,(71)(72)(73). ...