Zobrazeno 1 - 10
of 24
pro vyhledávání: '"William B. Hanlon"'
Publikováno v:
Journal of digital imaging. 13(2 Suppl 1)
We evaluated the effect of a deploying a relay station on demographic discrepancies, image segmentation for routing, quality control (QC), and technologist workflow in a distributed architecture type picture archiving and communication system (PACS)
Autor:
Andrew Benfield, Vladimir I. Valtchinov, Scott D. Davis, John A. Carrino, James Lester, Ramin Khorasani, William B. Hanlon
Publikováno v:
SPIE Proceedings.
Efforts to develop Picture Archiving and Communications Systems (PACS) for the last ten years have concentrated mainly on developing systems for primary interpretation of digital radiological images. Much less attention has been paid to the clinical
Publikováno v:
SPIE Proceedings.
We make a preliminary study with a ROC experiment to determine the acceptable levels of image compression that may be utilized for PACS archives. CR images of 1760 X 2140 pixel size and 10 bit depth are studied. The experiment uses wavelet algorithm
Autor:
Scott D. Davis, Ramin Khorasani, E Fener, Steven E. Seltzer, B. L. Holman, James Lester, Douglass F. Adams, William B. Hanlon
Publikováno v:
AJR. American journal of roentgenology. 170(5)
OBJECTIVE: Our goal was to develop a software system that allows easy and rapid input of digital radiology images and text reports, at the time of interpretation, into an easily searchable electronic teaching file database using the Internet and the
Autor:
Lizellen La Follette, William B. Hanlon, Donald P. Harrington, Lynne Reid, Ruthellen Fried, Lawrence M. Boxt, Stuart Rich, Tamas Sandor
Publikováno v:
Investigative Radiology. 21:906-909
Pulmonary wedge angiograms have been shown to reflect the severity of pulmonary vascular disease in congenital heart disease. Thirteen pulmonary wedge angiograms with a balloon occlusion catheter were performed in 11 adult patients (five normals and
Publikováno v:
Computers and Biomedical Research. 17:129-142
A method has been developed for the analysis of left ventricular wall motion which obviates the operator's involvement in the relative positioning of the systolic and diastolic contours. This was achieved by maximizing the cross-correlation function
Publikováno v:
Computers and Biomedical Research. 14:119-124
An automated off-line computer analysis that determines calvarial properties from CT images is described. The method provides 180 measurements of bone mass and thickness around the calvaria. The analysis also attempts to separate trabecular and corti
Autor:
William B. Hanlon, Claudia I. Henschke, Thomas A. Risser, Tamas Sandor, Joshua Wynne, Alexander Neumann
Publikováno v:
International Journal of Bio-Medical Computing. 14:431-439
The real time two-dimensional ultrasonic imaging of the left ventricle made possible segmental echocardiographic measurements of wall motion and thickening and thinning. The underlying hypothesis is that measurements of regional wall motion could qua
Autor:
Tamas Sandor, Lawrence M. Boxt, Donald P. Harrington, Lynne Reid, William B. Hanlon, Ruthellen Fried
Publikováno v:
Investigative Radiology. 20:136-140
We have developed a computer-assisted, operator-interactive technique which performs fast, precise computations of pulmonary artery taper. Individual 35-mm cineframes from balloon-occlusion pulmonary arteriograms are digitized into a 640 X 480 matrix
Publikováno v:
SPIE Proceedings.
An automated method has been developed to test the performance of the Somatom-2 CT-scanner. The approach is based on the utilization of the three-section phantom supplied with the device by Siemens. The phantom contains rectangular blocks, a water ba