14 results match your criteria Softcopy Interpretation

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Evaluation of a real-time interactive pulmonary nodule analysis system on chest digital radiographic images: a prospective study.

Acad Radiol 2008 May;15(5):571-5

Department of Radiology, Carver College of Medicine, University of Iowa, C751 GH, 200 Hawkins Drive, Iowa City, IA 52242-1077, USA.

Rationale And Objectives: We sought to assess the performance of a real-time interactive pulmonary nodule analysis system for evaluation of chest digital radiographic (DR) images in a routine clinical environment.

Materials And Methods: A real-time interactive pulmonary nodule analysis system for chest DR image softcopy reading (IQQA-Chest; EDDA Technology, Princeton Junction, NJ) was used in daily practice with a Picture Archiving and Communication System in a National Cancer Institute-designated cancer teaching hospital. Patients referred for follow-up of known cancer underwent digital chest radiography. Read More

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Monochrome versus color softcopy displays for teleradiology: observer performance and visual search efficiency.

Telemed J E Health 2007 Dec;13(6):675-81

Department of Radiology, University of Arizona, Tucson, Arizona 85724, USA.

This study evaluated the potential clinical utility for teleradiology of a high-performance (3-mega-pixel) color softcopy display compared with two monochrome softcopy displays: one of comparable luminance (250 cd/m2) and one of higher luminance (450 cd/m2). Six radiologists viewed 50 chest images, half with nodules and half without, once on each display. Eye position was recorded on a subset of the images to characterize visual search efficiency. Read More

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December 2007

On-axis and off-axis viewing of images on CRT displays and LCDs: observer performance and vision model predictions.

Acad Radiol 2005 Aug;12(8):957-64

Department of Radiology, University of Arizona, Tucson, 85724, USA.

Rationale And Objectives: Although cathode-ray tube (CRT) displays typically are used for softcopy display of radiographs in the digital reading environment, liquid crystal displays (LCDs) currently are being used as an alternative. LCDs have many desirable viewing properties compared with a CRT, but significant image degradation can occur with off-axis viewing. This study compares observer performance and predictions from a human visual system model for on-axis and off-axis viewing for CRT displays versus LCDs. Read More

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Evaluation of and compensation for spatial noise of LCDs in medical applications.

Med Phys 2005 Feb;32(2):578-87

Department of Electrical and Computer Engineering, University of Arizona, Tucson, Arizona 85724, USA.

Recent developments in liquid crystal display (LCD) technology suggest that this technology will replace the cathode ray tube (CRT) as the most popular softcopy display technology in the medical arena. However, LCDs are far from ideal for medical imaging. One of the principal problems they possess is spatial noise contamination, which requires accurate characterization and appropriate compensation before LCD images can be effectively utilized for reliable diagnosis. Read More

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February 2005

Detection of pulmonary nodules at multirow-detector CT: effectiveness of double reading to improve sensitivity at standard-dose and low-dose chest CT.

Eur Radiol 2005 Jan 4;15(1):14-22. Epub 2004 Nov 4.

Department of Clinical Radiology, University Hospital Münster, Albert-Schweitzer-Strasse 33, 48149 Münster, Germany.

The purpose of this study was to assess the effectiveness of double reading to increase the sensitivity of lung nodule detection at standard-dose (SDCT) and low-dose multirow-detector CT (LDCT). SDCT (100 mAs effective tube current) and LDCT (20 mAs) of nine patients with pulmonary metastases were obtained within 5 min using four-row detector CT. Softcopy images reconstructed with 5-mm slice thickness were read by three radiologists independently. Read More

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January 2005

Design requirements for radiology workstations.

J Digit Imaging 2004 Jun 19;17(2):92-9. Epub 2004 Apr 19.

Department of Computing Science, Simon Fraser University, Burnaby, British Columbia, Canada.

This article stresses the importance of capturing feedback from representative users in the early stages of product development. We present our solution to producing quality requirement specifications for radiology workstations, specifications that remain valid over time because we successfully anticipated the industry trends and the user's needs. We present the results from a user study performed in December 1999 in a radiology clinic equipped with state-of-the-art Picture Archiving and Communications Systems (PACS) and imaging scanners. Read More

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Digital imaging overview.

John A Carrino

Semin Roentgenol 2003 Jul;38(3):200-15

Harvard Medical School, Brigham and Women's Hospital, 75 Francis Street, Boston, MA 02115, USA.

Digital imaging consists of digital acquisition modalities, image, and information management systems. All modalities are available to be purchased as digital acquisition devices. Image management has been the domain for PACSs. Read More

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[Improving productivity by implementing RIS and PACS throughout the clinic: a case study].

Radiologe 2002 May;42(5):351-60

Institut für Klinische Radiologie, LMU München, Standort Grosshadern.

Problem: How are improvements in productivity in connection with RIS/PACS to be defined? What do they cost? To limit the problem to the relevant topics, we first describe the objectives of a radiology department and the identified bottlenecks in the workflow. How to define and assess the improvements is discussed.

Methods: The case in question for this study is the RIS/PACS project at the "Klinikum der Universität München, Campus Grosshadern". Read More

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SoftCopy Display Quality Assurance Program at Texas Children's Hospital.

Catherine Kim Ly

J Digit Imaging 2002 21;15 Suppl 1:33-40. Epub 2002 Mar 21.

Edward B. Singleton Diagnostic Imaging Services, Texas Children's Hospital, Houston 77030-2399, USA.

With growing dependence on picture archiving and communication systems for viewing images, a quality assurance program to monitor the condition of workstation displays has become increasingly important. At present there is no universally accepted program for PACS, but there are groups such as DICOM Working Group 11 of the ACR-NEMA and AAPM Task Group 18 that are working on image quality guidelines for interpretation from soft-copy displays. Texas Children's Hospital (TCH) is developing our own quality assurance program. Read More

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[Soft copy versus hard copy findings in digital mammography].

Radiologe 2002 Apr;42(4):265-9

Abt. Diagnostische Radiologie, Georg-August-Universität, Robert-Koch-Str. 40, 37075 Göttingen.

The advantages of full field digital mammography are the excellent and reliable image quality and the reduction of radiation exposure. Image acquisition and display are decoupled in digital mammography allowing for optimization of both independently. Image displays are currently either hardcopy produced with a laser printer or softcopy using a computer monitor. Read More

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[First clinical experience with a full-size, flat-panel detector for imaging the peripheral skeletal system].

Rofo 2001 Nov;173(11):1048-52

Klinik für Diagnostische Radiologie der Otto-von-Guericke-Universität Magdeburg.

Purpose: This investigation was intended to show that exposures of the peripheral skeleton system can be done with half of the dose used for conventional screen-film systems with a full-size CsI/a-Si flat panel detector. MATERIAL AN METHODS: 120 exposures of the wrist and 100 exposures of the ankle have been made on a full-size flat panel detector system (43 x 43 cm). The patient dose has been reduced by a factor of two compared to conventional images. Read More

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November 2001

Computers in imaging and health care: now and in the future.

J Digit Imaging 2000 Nov;13(4):145-56

Department of Radiology, University of California, San Francisco 94143-0628, USA.

Early picture archiving and communication systems (PACS) were characterized by the use of very expensive hardware devices, cumbersome display stations, duplication of database content, lack of interfaces to other clinical information systems, and immaturity in their understanding of the folder manager concepts and workflow reengineering. They were implemented historically at large academic medical centers by biomedical engineers and imaging informaticists. PACS were nonstandard, home-grown projects with mixed clinical acceptance. Read More

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November 2000

[A comparison of the monitor and alternator findings of digital thoracic images with the aid of a computer-supported procedure].

Rofo 1998 Jul;169(1):38-44

Institut für Radiologische Diagnostik, Klinikum Grosshadern, Ludwig-Maximilians-Universität München.

Purpose: To compare softcopy and hardcopy reading of chest radiographs a software tool was designed for creating lesions with clearly defined size, location and contrast.

Method: An ROC study was performed using a set of chest radiographs with 300 simulated small nodules and linear details displayed on film and on a 1 K monitor. Six observers participated in the study. Read More

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Picture archive and communication systems implementation in a community medicine practice.

J Digit Imaging 1997 Aug;10(3 Suppl 1):36-7

Department of Diagnostic Radiology, Mayo Clinic and Foundation, Rochester MN, USA.

In order to gain experience with vendor-supplied picture archive and communication system (PACS) products, a Vantage PACS from Lockheed-Martin was installed in a Mayo community medicine practice in Rochester. This practice produces about 45,000 radiology examinations annually. The PACS includes central long- and short-term storage devices, 10 image display workstations, and a dedicated high-speed image distribution network. Read More

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