Ms. Regina O. Redfern Profile

Regina O. Redfern

SPIE Involvement:

Author

Publications (19)

Proceedings Article | 12 March 2010 Open Access

Minerva: using a software program to improve resident performance during independent call (Withdrawal Notice)

Jason Itri, Regina Redfern, Tessa Cook, Mary Scanlon

Proceedings Volume 7628, 76280T (2010) https://doi.org/10.1117/12.845430

KEYWORDS: Radiology, Injuries, Databases, Head, Neodymium, Mining, Computed tomography, Ultrasonography, Surface conduction electron emitter displays, Safety

Read Abstract +

DOWNLOAD PAPER

Proceedings Article | 8 March 2006 Paper

Impact of volumetric ultrasound on PACS

Steven Horii, Alberto Goldszal, Regina Redfern, Beverly Coleman, Jill Langer, Dan Morton, Susan Rowling, William Boonn, Christopher Iyoob

Proceedings Volume 6145, 614512 (2006) https://doi.org/10.1117/12.657135

KEYWORDS: Ultrasonography, Picture Archiving and Communication System, Doppler effect, Radiology, Diagnostics, Data storage, Surgery, 3D image processing, Color imaging, Databases

Read Abstract +

The purpose of this study was to determine if the size of ultrasound examinations was increasing over time. The primary reasons for this are believed to be an increased number of images per study, the incorporation of "cine loops", and increased use of color flow Doppler. The result of this study, if it supports the hypothesis that ultrasound study size is increasing, would be directly applicable to planning for future expansion of storage in the Ultrasound PACS. Data were obtained from the ultrasound PACS server for number of studies, number of images, and total stored volume for sampled months (January and July of 2003 - 2006). The investigators believed that these months would provide a reasonable sample of study size as examination types did not vary significantly from month to month (based on Departmental statistics). The Radiology Department's information system (RIS) was used to determine total yearly ultrasound examination volume to determine the trend over time. Because no protected health information (PHI) was to be used in this study, the investigators believed that no IRB approval was necessary. The number of studies done per month was more variable than the investigators had believed. One month in particular (July, 2003) had an anomalously large number of studies. However, despite this, computations of the number of images per study, the total data volume per study, and the average amount of data per image did show an increasing trend as expected. Also, the total volume of data stored showed an increasing trend over the study time period. The investigators' hypothesis that examination size is increasing has been demonstrated to be true for the months sampled. From Departmental data, the investigators know that the most recent ultrasound yearly volume increased approximately ten percent over the previous year, and that trend was also seen for the study period (from 7-10 percent per year increase in volume). With the information that the examination size is also increasing, the Department can make better plans for future expansion of the Ultrasound PACS storage system. Ultrasound examination size is increasing, largely because of the increased use of cine loops. A change to using more of these to replace single static images will further increase examination size.

Proceedings Article | 16 May 2002 Paper

PACS technologies and reliability: are we making things better or worse?

Steven Horii, Regina Redfern, Harold Kundel, Calvin Nodine

Proceedings Volume 4685, (2002) https://doi.org/10.1117/12.467007

KEYWORDS: Picture Archiving and Communication System, Computing systems, Complex systems, Reliability, Systems modeling, Speech recognition, Error analysis, Ultrasonography, Data storage, Failure analysis

Read Abstract +

Proceedings Article | 7 August 2001 Paper

Automated results notification system for PACS

Steven Horii, Regina Redfern, Eric Feingold, Harold Kundel, Calvin Nodine, Deborah Arnold, Stephanie Abbuhl, Robert Lowe, Inna Brikman

Proceedings Volume 4323, (2001) https://doi.org/10.1117/12.435487

KEYWORDS: Picture Archiving and Communication System, Radiology, Speech recognition, Software development, Time metrology, Information fusion, Imaging systems, System integration, Medical imaging, Surgery

Read Abstract +

Proceedings Article | 18 May 2000 Paper

PACS workstations in the emergency department: impact on workflow in radiology and emergency medicine

Steven Horii, Harold Kundel, Regina Redfern, Robert Lowe, Calvin Nodine, Stephanie Abbuhl, Megan Phelan, Deborah Arnold, Melissa Myers, Inna Brikman, Reuben Mezrich

Proceedings Volume 3980, (2000) https://doi.org/10.1117/12.386403

KEYWORDS: Picture Archiving and Communication System, Radiology, Chromium, Radiography, Emergency medicine, Surgery, Information assurance, Computing systems, Medical imaging, Nickel

Read Abstract +

Proceedings Article | 18 July 1999 Paper

Replacing film with PACS: work shifting and lack of automation

Steven Horii, Harold Kundel, J. Bruce Kneeland, Regina Redfern, Calvin Nodine, Deborah Arnold, Megan Phelan, George Grevera, Inna Brikman

Proceedings Volume 3662, (1999) https://doi.org/10.1117/12.352761

KEYWORDS: Picture Archiving and Communication System, Radiology, Image processing, Surgery, Diagnostics, Ultrasonography, Chromium, Printing, Radiography, Medical research

Read Abstract +

Proceedings Article | 18 July 1999 Paper

Experience with radiology workflow and PACS: effects on technologist and radiologist task times

Regina Redfern, Steven Horii, Eric Feingold, Harold Kundel

Proceedings Volume 3662, (1999) https://doi.org/10.1117/12.352760

KEYWORDS: Picture Archiving and Communication System, Radiology, Chromium, Chest, Analog electronics, Data conversion, Telecommunications, Image processing, Medical imaging, Image quality

Read Abstract +

Proceedings Article | 13 July 1998 Paper

Prototype controls for a plain radiography workstation

Steven Horii, George Grevera, Eric Feingold, Harold Kundel, Reuben Mezrich, Calvin Nodine, Curtis Langlotz, Regina Redfern, Jill Muck, Megan Phelan, Steven Scoleri

Proceedings Volume 3339, (1998) https://doi.org/10.1117/12.319822

KEYWORDS: Control systems, Radiography, Prototyping, Picture Archiving and Communication System, Chest, Sun, Visualization, Chromium, Eye, Microsystems

Read Abstract +

Proceedings Article | 13 July 1998 Paper

Assessing the impact of a radiology information management system in the emergency department

Regina Redfern, Curtis Langlotz, Robert Lowe, Steven Horii, Stephanie Abbuhl, Harold Kundel

Proceedings Volume 3339, (1998) https://doi.org/10.1117/12.319795

KEYWORDS: Radiology, Picture Archiving and Communication System, Image processing, Telecommunications, Chromium, Medical imaging, Imaging systems, System integration, Image quality

Read Abstract +

Proceedings Article | 22 May 1997 Paper

PACS workstation usage and patient outcome surrogates

Regina Redfern, Harold Kundel, Sridhar Seshadri, Curtis Langlotz, Steven Horii, Calvin Nodine, Paul Lanken, Marcia Polansky, Inna Brikman, Mary Bozzo

Proceedings Volume 3035, (1997) https://doi.org/10.1117/12.274599

KEYWORDS: Picture Archiving and Communication System, Radiology, Chromium, Analog electronics, Digital imaging, Chest, Diagnostics, Video, Telecommunications

Read Abstract +

Proceedings Article | 22 May 1997 Paper

What do we need to advance PACS workstations: a critical review with suggestions

Steven Horii, Harold Kundel, Eric Feingold, George Grevera, Calvin Nodine, Curtis Langlotz, Reuben Mezrich, Regina Redfern, Jill Muck

Proceedings Volume 3035, (1997) https://doi.org/10.1117/12.274562

KEYWORDS: Picture Archiving and Communication System, Radiology, Medical imaging, Manufacturing, Control systems, System integration, Human-machine interfaces, Diagnostics, Computing systems, Image processing

Read Abstract +

Proceedings Article | 1 May 1996 Paper

Image workstation in a medical intensive care unit changes viewing patterns and timing of image-based clinical actions in routine portable chest radiographs

Regina Redfern, Harold Kundel, Marcia Polansky, Curtis Langlotz, Paul Lanken, Inna Brikman, Steven Horii, Mary Bozzo, Eric Feingold, Calvin Nodine

Proceedings Volume 2711, (1996) https://doi.org/10.1117/12.239262

KEYWORDS: Picture Archiving and Communication System, Radiology, Chest, Chest imaging, Medical imaging, Analog electronics, Chromium, Phase modulation, Video surveillance, Epitaxial lateral overgrowth

Read Abstract +

Proceedings Article | 1 May 1996 Paper

Workflow in a neuroradiology reading room using multiviewers

Harold Kundel, Regina Redfern, Curtis Langlotz, Robert Grossman, Inna Brikman, Steven Horii, Eric Feingold, Calvin Nodine

Proceedings Volume 2711, (1996) https://doi.org/10.1117/12.239252

KEYWORDS: Radiology, Picture Archiving and Communication System, Phase modulation, Surgery, Computed tomography, Magnetic resonance imaging, Neuroimaging, Brain, Spine, Video

Read Abstract +

Proceedings Article | 1 May 1996 Paper

Effect of PACS/CR on cost of care and length of stay in a medical intensive care unit

Curtis Langlotz, Harold Kundel, Inna Brikman, Hugh Pratt, Regina Redfern, Steven Horii, J. Sanford Schwartz

Proceedings Volume 2711, (1996) https://doi.org/10.1117/12.239258

KEYWORDS: Picture Archiving and Communication System, Radiology, Chromium, Diagnostics, Chest, Databases, Data analysis, Analytical research, Chronology, Data modeling

Read Abstract +

Our purpose was to determine the economic effects associated with the introduction of PACS and computed radiology (CR) in a medical intensive care unit (MICU). Clinical and financial data were collected over a period of 6 months, both before and after the introduction of PACS/CR in our medical intensive care unit. Administrative claims data resulting from the MICU stay of each patient enrolled in our study were transferred online to our research database from the administrative databases of our hospital and its affiliated clinical practices. These data included all charge entries, sociodemographic data, admissions/discharge/transfer chronologies, ICD9 diagnostic and procedure codes, and diagnostic related groups. APACHE III scores and other case mix adjusters were computed from the diagnostic codes, and from the contemporaneous medical record. Departmental charge to cost ratios and the Medicare Resource-Based Relative Value Scale fee schedule were used to estimate costs from hospital and professional charges. Data were analyzed using both the patient and the exam as the unit of analysis. Univariate analyses by patient show that patients enrolled during the PACS periods were similar to those enrolled during the Film periods in age, sex, APACHE III score, and other measures of case mix. No significant differences in unadjusted median length of stay between the two Film and two PACS periods were detected. Likewise, no significant differences in unadjusted total hospital and professional costs were found between the Film and PACS periods. In our univariate analyses by exam, we focused on the subgroup of exams that had triggered primary clinical actions in any period. Those action-triggering exams were divided into two groups according to whether the referring clinician elected to obtain imaging results from the workstation or from the usual channels. Patients whose imaging results were obtain from the workstation had significantly lower professional costs in the 7 days following the action-triggering exam compared with patients whose exam information was obtained through the usual channels. No significant differences in patient age or APACHE score were noted between these two groups. Our preliminary results show possible evidence of a reduction in unadjusted cost of care for the subgroup of patients whose action-triggering exams were first encountered on the PACS workstation. Whether these results represent clinicians' differential workstation utilization patterns or true effects of PACS/CR will be determined by further data analysis, including case mix adjustment, subgroup analysis, and multivariate modeling.

Proceedings Article | 1 May 1996 Paper

PACS workstation functions: usage differences between radiologists and MICU physicians

Steven Horii, Eric Feingold, Harold Kundel, Calvin Nodine, Curtis Langlotz, Regina Redfern, George Grevera, Inna Brikman, Jill Muck

Proceedings Volume 2711, (1996) https://doi.org/10.1117/12.239257

KEYWORDS: Chromium, Control systems, Radiography, Chest, Picture Archiving and Communication System, Zoom lenses, Diagnostics, Radiology, Medical imaging, Sun

Read Abstract +

Proceedings Article | 12 May 1995 Paper

Prospective comparison of the usage of conventional film and PACS based computed radiography for portable chest x-ray imaging in a medical intensive care unit

Harold Kundel, Sridhar Seshadri, Curtis Langlotz, Paul Lanken, Steven Horii, Marcia Polansky, Sheel Kishore, Eric Finegold, Inna Brikman, Mary Bozzo, Regina Redfern

Proceedings Volume 2435, (1995) https://doi.org/10.1117/12.208789

KEYWORDS: Radiology, Chest imaging, Picture Archiving and Communication System, Radiography, Image transmission, Chromium, Medical imaging, Digital imaging, Image processing

Read Abstract +

Proceedings Article | 12 May 1995 Paper

Intensive care unit workstation usage: digitized film versus phosphor plate imaging

Steven Horii, Sheel Kishore, Eric Feingold, John Stevens, Sridhar Seshadri, Curtis Langlotz, Harold Kundel, Mary Bozzo, Regina Redfern, Inna Brikman

Proceedings Volume 2435, (1995) https://doi.org/10.1117/12.208787

KEYWORDS: Chromium, Radiology, Zoom lenses, Control systems, Picture Archiving and Communication System, Image processing, Medical imaging, Imaging systems, Radiography, Image quality

Read Abstract +

Proceedings Article | 12 May 1995 Paper

Incremental cost of PACS in a medical intensive care unit

Curtis Langlotz, Bridget Cleff, Orit Even-Shoshan, Mary Bozzo, Regina Redfern, Inna Brikman, Sridhar Seshadri, Steven Horii, Harold Kundel

Proceedings Volume 2435, (1995) https://doi.org/10.1117/12.208788

KEYWORDS: Picture Archiving and Communication System, Chromium, Radiology, Chest, Data modeling, Imaging systems, Optical discs, Instrument modeling, Systems modeling, Surgery

Read Abstract +

Proceedings Article | 15 May 1994 Paper

Evaluation of PACS in a medical intensive care unit: the effect of computed radiography

Harold Kundel, Sridhar Seshadri, Peter Shile, Marcia Polansky, Curtis Langlotz, Paul Lanken, Steven Horii, Robert Grossman, Janine Purcell, Sheel Kishore, Inna Brikman, Mary Bozzo, Regina Redfern

Proceedings Volume 2165, (1994) https://doi.org/10.1117/12.174335

KEYWORDS: Picture Archiving and Communication System, Lithium, Telecommunications, Radiology, Radiography, Data communications, Chromium, Chest imaging, System integration, Chest

Read Abstract +

Showing 5 of 19 publications

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Keywords/Phrases

Search In:

Publication Years