This project will develop and study a model for the measurement of the diagnostic value of a Picture Archiving and Communication System (PACS). The model groups imaging examinations into diagnostic categories on the basis of clinical indications and for each category computes a diagnostic value index, that is based upon the accuracy and the timeliness of clinical access to the diagnostic image information. A mixture distribution technique will be studied as an alternative to the receiver operating characteristic (ROC) analysis for estimating diagnostic accuracy. The diagnostic value index will be related to the time required to take a clinical action. Data to support the model will be collected prospectively from three clinical sites: a medical intensive care unit, a surgical intensive care unit and an emergency department. Each site has different characteristics and will test the robustness of the diagnostic value model. At each site the PACS will be compared before and after an intervention designed to improve the effectiveness of the PACS.

National Institute of Health (NIH)
National Cancer Institute (NCI)
Research Program Projects (P01)
Project #
Application #
Study Section
Project Start
Project End
Budget Start
Budget End
Support Year
Fiscal Year
Total Cost
Indirect Cost
University of Pennsylvania
United States
Zip Code
Kundel, Harold L; Polansky, Marcia (2003) Measurement of observer agreement. Radiology 228:303-8
Redfern, R O; Langlotz, C P; Abbuhl, S B et al. (2002) The effect of PACS on the time required for technologists to produce radiographic images in the emergency department radiology suite. J Digit Imaging 15:153-60
Lowe, Robert A; Abbuhl, Stephanie B; Baumritter, Agnieshka et al. (2002) Radiology services in emergency medicine residency programs: a national survey. Acad Emerg Med 9:587-94
Kundel, H L; Polansky, M; Dalinka, M K et al. (2001) Reliability of soft-copy versus hard-copy interpretation of emergency department radiographs: a prototype study. AJR Am J Roentgenol 177:525-8
Horii, S; Redfern, R; Feingold, E et al. (2001) An automated results notification system for PACS. J Digit Imaging 14:192-8
Redfern, R O; Lowe, R A; Kundel, H L et al. (2001) From being a radiologist to watching a radiologist: impact of filmless operation on the training of radiology residents. Acad Radiol 8:1154-8
Redfern, R O; Horii, S C; Feingold, E et al. (2000) Radiology workflow and patient volume: effect of picture archiving and communication systems on technologists and radiologists. J Digit Imaging 13:97-100
Redfern, R O; Kundel, H L; Polansky, M et al. (2000) A picture archival and communication system shortens delays in obtaining radiographic information in a medical intensive care unit. Crit Care Med 28:1006-13
Grevera, G J; Udupa, J K; Miki, Y (1999) A task-specific evaluation of three-dimensional image interpolation techniques. IEEE Trans Med Imaging 18:137-43
Pratt, H M; Langlotz, C P; Feingold, E R et al. (1998) Incremental cost of department-wide implementation of a picture archiving and communication system and computed radiography. Radiology 206:245-52

Showing the most recent 10 out of 19 publications