Zobrazeno 1 - 10
of 22
pro vyhledávání: '"John C. Lasher"'
Autor:
David T. Kopp, Ralph Blumhardt, Jack L. Lancaster, John C. Lasher, Trish A. Hander, Peter T. Fox
Publikováno v:
ResearcherID
An easy and rapid method for the measurement of the intrinsic spatial resolution of a gamma camera was developed. The measurement is based on the first and second statistical moments of regions of interest (ROIs) applied to bar phantom images. This l
Autor:
William T. Phillips, C. Alex McMahan, Michael R. Blumhardt, Joyce G. Schwartz, John C. Lasher
Publikováno v:
European journal of nuclear medicine. 22(2)
Previous research has shown that the single anterior view of the stomach overestimates the gastric half-emptying time of a solid meal compared to the geometric mean of the anterior and posterior views. Little research has been performed comparing the
Publikováno v:
Clinical Nuclear Medicine. 20:91
Publikováno v:
Radiology. 153:69-72
Over the past decade there has been an increase in the use of functional imaging. This is mainly because of the recent introduction of the digital computer, which is capable of processing measured data into images that are related to a physiological
Autor:
Anthony R. Benedetto, Steven R. Bunker, John C. Lasher, Ralph Blumhardt, Michael F. Hartshorne, Gerald W. Growcock
Publikováno v:
Gastrointestinal Radiology. 9:353-356
Three patterns of intestinal activity were noted in a review of 64 patients studied with Tc-99m sodium pertechnetate for suspected Meckel's diverticulum: no bowel activity seen (37.5%), bowel activity visualized after stomach activity (39.1%), and di
Autor:
Louis J. Dell'Italia, Mark R. Starling, Ralph Blumhardt, John C. Lasher, Richard A. Walsh, Frederick R. Badke
Publikováno v:
Circulation. 72:317-326
To determine the accuracy of attenuation-corrected equilibrium radionuclide angiographic determinations of right ventricular volumes, we initially studied 14 postmortem human right ventricular casts by water displacement and biplane cineventriculogra
Publikováno v:
Clinical Nuclear Medicine. 12:134-139
To determine whether thallium-201 washout profile analysis can detect regional myocardial ischemia caused by coronary artery bypass graft occlusion or progression of disease in nonbypassed coronary arteries, 19 consecutive patients with chest pain fo
Publikováno v:
Medical Physics. 15:642-647
It is desirable to have an accurate method to determine the depth of various organs which are commonly imaged in nuclear medicine. The method presented here utilizes the geometrical characteristics of the rotating slant‐hole collimator to calculate
Autor:
Mark R. Starling, G. B. J. Mancini, L. J. Dell'Italia, John C. Lasher, Richard A. Walsh, Jack L. Lancaster
Publikováno v:
Circulation. 76:32-43
This investigation was designed to calculate left ventricular maximum time-varying elastance (Emax), to define the relationship between Emax and pressure-volume (P-V) relations at other, more easily defined measured of end-systole, and to determine w
Autor:
Fred L. Weiland, Ralph Blumhardt, Jack L. Lancaster, Mark R. Starling, John C. Lasher, Richard A. Walsh, Gregory J. Dehmer, Gregory S. Uhl
Publikováno v:
Radiology. 157:781-787