50 results match your criteria Softcopy Interpretation

  • Page 1 of 1

Systematic Parameterization, Storage, and Representation of Volumetric DICOM Data.

J Med Biol Eng 2015;35(6):709-723. Epub 2015 Nov 18.

FH-Aachen, Juelich Division, Medical Informatics Laboratory, Aachen, Germany.

Tomographic medical imaging systems produce hundreds to thousands of slices, enabling three-dimensional (3D) analysis. Radiologists process these images through various tools and techniques in order to generate 3D renderings for various applications, such as surgical planning, medical education, and volumetric measurements. To save and store these visualizations, current systems use snapshots or video exporting, which prevents further optimizations and requires the storage of significant additional data. Read More

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November 2015
6 Reads

Dual-energy contrast-enhanced digital mammography: initial clinical results of a multireader, multicase study.

Breast Cancer Res 2012 Jun 14;14(3):R94. Epub 2012 Jun 14.

Department of Radiology, Institut de cancérologie Gustave-Roussy, 39 rue Camille Desmoulin, Villejuif, 94805 France.

Introduction: The purpose of this study was to compare the diagnostic accuracy of dual-energy contrast-enhanced digital mammography (CEDM) as an adjunct to mammography (MX) ± ultrasonography (US) with the diagnostic accuracy of MX ± US alone.

Methods: One hundred ten consenting women with 148 breast lesions (84 malignant, 64 benign) underwent two-view dual-energy CEDM in addition to MX and US using a specially modified digital mammography system (Senographe DS, GE Healthcare). Reference standard was histology for 138 lesions and follow-up for 12 lesions. Read More

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June 2012
11 Reads

Utilizing mobile networks for the detection of clinically relevant interactions between chemotherapy regimens and complementary and alternative medicines.

J Altern Complement Med 2012 Feb 9;18(2):165-74. Epub 2012 Feb 9.

Institute of Digital Healthcare, WMG, University of Warwick, International Digital Laboratory, Coventry, UK.

Objectives: Patients with cancer who use complementary and alternative medicines (CAMs) in conjunction with chemotherapy treatment are at risk of manifesting anticancer drug-CAM interactions (DCIs), which may lead to negative therapeutic outcomes. This article describes a novel iPhone application developed for the Mobile Internet, called OncoRx-MI, which identifies DCIs of single-agent and multiple-agent chemotherapy regimen (CReg) prescriptions.

Methods: Drug-, CAM-, and DCI-related information was compiled from various hardcopy and softcopy sources, and published literature from PubMed. Read More

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February 2012
2 Reads

Medical image on the go!

J Med Syst 2011 Aug 22;35(4):499-516. Epub 2009 Oct 22.

Department for Computing and Automatics, University of Novi Sad, Novi Sad, Serbia.

The idea for softcopy viewing of medical image outside the radiology reading room spread among the scientists in various fields for several years. An image could be read on workstation of all types, from desktop across movable to handheld. Benefits are numerous and continue to grow as physicians use them discovering new usage cases. Read More

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August 2011
8 Reads

Normal and accessory fissures of the lung: evaluation with contiguous volumetric thin-section multidetector CT.

Eur J Radiol 2010 Aug 7;75(2):e1-8. Epub 2009 Nov 7.

Department of Radiology, Division of Cardiothoracic Radiology, University of Michigan Medical Center, Ann Arbor, MI, USA.

The purpose of this study was to use volumetric, 1.25 mm collimation MDCT read as softcopy and using a 2D and 3D viewer tool, to establish the frequency of normal and accessory fissures, the continuity of the fissures, whether the fissures are visible as a thin line, a hypovascular region, or both, and also to establish the interobserver agreement of readers. 150 consecutive MDCT examinations were retrospectively assessed. Read More

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August 2010
3 Reads

An evaluation of cellular neural networks for the automatic identification of cephalometric landmarks on digital images.

J Biomed Biotechnol 2009 10;2009:717102. Epub 2009 Sep 10.

Istituto di II Clinica Odontoiatrica, Policlinico Città Universitaria, Catania, Italy.

Several efforts have been made to completely automate cephalometric analysis by automatic landmark search. However, accuracy obtained was worse than manual identification in every study. The analogue-to-digital conversion of X-ray has been claimed to be the main problem. Read More

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November 2009
1 Read

Usefulness of reduced image display size in softcopy reading: evaluation of lung nodules in chest screening.

Acad Radiol 2009 Aug 14;16(8):940-6. Epub 2009 May 14.

Department of Radiology, Osaka Prefectural Medical Center for Respiratory and Allergic Disease, Osaka Prefectural Hospital Organization, 3-7-1 Habikino, Habikino, Osaka, Japan.

Rationale And Objectives: The purposes of the present study were to investigate the impact of viewing size on soft-copy diagnosis for detecting abnormalities on digital chest radiographs and to verify the usefulness of reduced digital chest radiography.

Materials And Methods: Receiver-operating characteristic (ROC) and localized ROC (LROC) analysis of clinical images was performed using the standard digital image database of the Japanese Radiation Technology Society. A total of 30 images with and 20 images without nodule samples were extracted randomly from the database and used for ROC analysis. Read More

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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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May 2008
3 Reads

[Workflow in digital screening mammography].

Radiologe 2008 Apr;48(4):335-44

Institut für Radiologie, Campus Mitte, Charité - Universitätsmedizin Berlin, Berlin.

The overriding goal of an organized mammography screening program is to offer high level medical care to everyone at a justifiable cost. The following overview will demonstrate how both aspects of screening, quality and cost efficiency, are supported by a fully digital workflow. Digital mammography systems allow for a constant high image quality and repeat examinations due to overexposure or underexposure can be avoided. 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
7 Reads

Inter-observer variations of digital radiograph pulmonary nodule marking by using computer toolkit.

Chin Med Sci J 2007 Mar;22(1):1-4

Department of Radiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730.

Objective: To assess inter-observer variations of pulmonary nodule marking in routine clinical chest digital radiograph (DR) softcopy reading by using a lung nodule computer toolkit.

Methods: A total of 601 chest posterior-anterior DR images were randomly selected from routine outpatient screening in Peking Union Medical College Hospital. Two chest radiologists with experience more than ten years were first asked to read the images and mark all suspicious nodules independently by using computer toolkit IQQA-Chest, and to indicate the likelihood for each nodule detected. Read More

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March 2007
1 Read

Multiscale display processing of radiographic images acquired with a protoype flat panel detector.

Conf Proc IEEE Eng Med Biol Soc 2005 ;6:6595-7

Department of Biomedical Engineering, Tsinghua University, Beijing, 100084, China.

This paper study softcopy display algorithms of digital radiographic images acquired using a prototype flat panel detector. The processing is manipulated in two steps. Firstly, a look up table is applied to map the gray value of original image into proper visual scope. Read More

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September 2008
5 Reads

An indicator device for monitoring of room illuminance level in the radiological image viewing environment.

Australas Phys Eng Sci Med 2006 Sep;29(3):278-80

Departament of Biomedical Imaging, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia.

Illuminance level in the softcopy image viewing room is a very important factor to optimize productivity in radiological diagnosis. In today's radiological environment, the illuminance measurements are normally done during the quality control procedure and performed annually. Although the room is equipped with dimmer switches, radiologists are not able to decide the level of illuminance according to the standards. Read More

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September 2006

Contrast-detail analysis of three flat panel detectors for digital radiography.

Med Phys 2006 06;33(6):1707-19

Servizio di Fisica Sanitaria, Azienda Ospedaliera Santa Maria Nuova, V.le Risorgimento 80, 42100 Reggio Emilia (RE), Italy.

In this paper we performed a contrast detail analysis of three commercially available flat panel detectors, two based on the indirect detection mechanism (GE Revolution XQ/i, system A, and Trixell/Philips Pixium 4600, system B) and one based on the direct detection mechanism (Hologic DirectRay DR 1000, system C). The experiment was conducted using standard x-ray radiation quality and a widely used contrast-detail phantom. Images were evaluated using a four alternative forced choice paradigm on a diagnostic-quality softcopy monitor. Read More

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June 2006
1 Read

Differential use of image enhancement techniques by experienced and inexperienced observers.

J Digit Imaging 2005 Dec;18(4):311-5

Department of Radiology, University of Arizona, 1609 N. Warren Bldg 211 Rm 112, Tucson, AZ 85724, USA.

Full-field digital mammography (FFDM) systems are currently being used to acquire mammograms in digital format, but digital displays are less than ideal compared to traditional film-screen display. Certain physical properties of softcopy displays [e.g. Read More

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December 2005
1 Read

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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August 2005
2 Reads

Chest radiography: a comparison of image quality and effective dose using four digital systems.

Radiat Prot Dosimetry 2005 ;114(1-3):273-7

ME&P, King's College London, London, UK.

Image quality (IQ) and effective dose for chest radiography was compared for four digital imaging systems that used three different detector technologies: a-Si/TFT flat-panel detector (FPD), scanning-slot/charge-coupled device (CCD) and photostimuable phosphor (PSP). On each system a phantom was exposed at 125 kV(p) for automatic exposure control (AEC) and 2, 4 and 8 Gy receptor dose using identical geometrical conditions. All images were scored as softcopy images by three observers. Read More

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September 2005
2 Reads

Are phantoms useful for predicting the potential of dose reduction in full-field digital mammography?

Phys Med Biol 2005 Apr 6;50(8):1851-70. Epub 2005 Apr 6.

Department of Oncological and Surgical Sciences, University of Padua, Italy.

A phantom study was performed in full-field digital mammography to investigate the opportunity and the magnitude of a possible dose reduction that would leave the image quality above the accepted thresholds associated with some classical phantoms. This preliminary work is intended to lay the groundwork for a future clinical study on the impact of dose reduction on clinical results. Three different mammography phantoms (ACR RMI 156, CIRS 11A and CDMAM 3. Read More

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April 2005
1 Read

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
1 Read

Evaluating the effect of a wavelet enhancement method in characterization of simulated lesions embedded in dense breast parenchyma.

Eur Radiol 2005 Aug 9;15(8):1615-22. Epub 2005 Feb 9.

Department of Medical Physics, School of Medicine, University of Patras, Patras, 26500, Greece.

Presence of dense parenchyma in mammographic images masks lesions resulting in either missed detections or mischaracterizations, thus decreasing mammographic sensitivity and specificity. The aim of this study is evaluating the effect of a wavelet enhancement method on dense parenchyma for a lesion contour characterization task, using simulated lesions. The method is recently introduced, based on a two-stage process, locally adaptive denoising by soft-thresholding and enhancement by linear stretching. Read More

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Reliability of landmark identification in cephalometric radiography acquired by a storage phosphor imaging system.

Dentomaxillofac Radiol 2004 Sep;33(5):301-6

School of Dentistry, College of Medicine, National Taiwan University, Taipei, Taiwan.

Objectives: To compare the cephalometric landmark identification on softcopy and hardcopy of direct digital cephalography acquired by a storage-phosphor (SP) imaging system.

Methods: Ten digital cephalograms and their conventional counterpart, hardcopy on a transparent blue film, were obtained by a SP imaging system and a dye sublimation printer. Twelve orthodontic residents identified 19 cephalometric landmarks on monitor-displayed SP digital images with computer-aided method and on their hardcopies with conventional method. Read More

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September 2004
9 Reads

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
4 Reads

Comparison of liquid crystal versus cathode ray tube display for the detection of simulated chest lesions.

Eur Radiol 2005 Jul 8;15(7):1472-6. Epub 2004 Sep 8.

Department of Radiology, Vienna General Hospital, University of Vienna, Austria.

The purpose of the study was to compare the detection performance of a cathode ray tube (CRT) monitor versus a liquid crystal display (LCD) monitor for simulated subtle pulmonary lesions. Ten templates containing simulated lung lesions were superimposed on an anthropomorphic chest phantom. Posteroanterior radiographs were obtained using flat panel technology and were displayed on a CRT and an LCD monitor. Read More

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Primary epiploic appendagitis: CT diagnosis.

Emerg Radiol 2004 Aug 6;11(1):9-14. Epub 2004 Jul 6.

Department of Radiology, Indiana University Medical Center, UH 0279, 550 N. University Blvd., Indianapolis, IN 46202-5253, USA.

The purpose of this study was to analyze the CT signs of primary epiploic appendagitis. A retrospective search of the CT database over 12 months for this diagnosis revealed 11 cases. The clinical findings were recorded. Read More

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August 2004
2 Reads

Experiences with a workstation prototype for softcopy reading within the Bavarian mammography recertification program: workstations and education.

Acad Radiol 2004 Apr;11(4):407-18

OFFIS e.V., Escherweg 2, Oldenburg, Germany 26121.

Rationale And Objectives: In January 2002, the Bavarian Statutory Health Care Administration ("Kassenärztliche Vereinigung Bayerns", KVB) started a recertification program for quality assurance and quality improvement in mammography reading.

Materials And Methods: All accredited radiologists and gynecologists are asked to prove their qualification every 1-2 years. The recertification program requires the physicians to read 50 cases randomly selected from a larger collection of high-quality test cases. Read More

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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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June 2004
2 Reads

Soft copy display requirements for digital mammography.

J Digit Imaging 2003 Sep 15;16(3):292-305. Epub 2003 Dec 15.

School of Information and Library Science, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-3360, USA.

One of the advantages of digital mammography is to display mammograms on softcopy (electronic displays). Softcopy display of mammography is challenging because of the spatial and contrast resolution demands present in mammograms. We have designed and developed a softcopy mammography display application, Mammoview, which is capable of allowing radiologists to read mammograms as quickly and as accurately as they can on film alternators. Read More

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September 2003

Digital imaging overview.

Authors:
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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July 2003
2 Reads

[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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May 2002
2 Reads

An interactive method of assessing the characteristics of softcopy display using observer performance tests.

Authors:
Jihong Wang Qi Peng

J Digit Imaging 2002 19;15 Suppl 1:216-8. Epub 2002 Mar 19.

Department of Radiology, University of Texas Southwestern Medical Center at Dallas, TX 75390-9071, USA.

An interactive computer program has been developed to assess the quality of softcopy display by measuring the contrast sensitivity, spatial resolution, and spatial uniformity at various backgrounds and objects. This program runs on Microsoft Window or NT platform and is easy to use. It has been shown to be a sensitive and accurate tool to measure the characteristics of monitors of any kind. Read More

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August 2002
1 Read

Planning and implementing image delivery to outpatient specialty clinical practices in a large medical center.

J Digit Imaging 2002 21;15 Suppl 1:156-61. Epub 2002 Mar 21.

Electronic Radiology Laboratory, Mallinckrodt Institute of Radiology, Washington University School of Medicine, Saint Louis, MO, USA.

Softcopy image viewing using web-based technologies has been deployed to 3 specialty outpatient practices - Lung Center, Neurosurgery, Orthopedic Surgery - where films remain available. Physicians and staff use Philips Easyweb (a web-based image browser) and BJC HealthCare ClinDesk (a Java-based electronic patient record) clients in patient examination rooms and physician workrooms to retrieve images from a Mitra image server. Practice-specific planning and training preceded deployment; on-site training and support came with deployment; on-site and telephone support are available as needed. Read More

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August 2002
1 Read

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

Authors:
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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August 2002
3 Reads

[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 skeleton - Part II: Post-processing with a newly developed adaptive autowindow algorithm].

Rofo 2002 Mar;174(3):353-6

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

Purpose: of the second part of the investigation was the evaluation of a newly developed adaptive autowindow algorithm in comparison to the system processing radiographs of the wrist and ankle to further optimize the image quality with softcopy reading.

Material And Methods: All 120 radiographs of the wrist and all 100 radiographs of the ankle used in the 1st part of this paper were processed with the adaptive autowindow algorithm. The evaluation was again performed by 5 radiologists with softcopy reading. Read More

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Preparing a business justification for going electronic.

Radiol Manage 2002 Jan-Feb;24(1):14-21

Radiology Department, Winthrop-University Hospital, Mineola, New York, USA.

Exponential advances in the technology sector and computer industry have benefited the science and practice of radiology. Modalities such as digital radiography, computed radiography, computed tomography, magnetic resonance imaging, ultrasound, digital angiography, and gamma cameras are all capable of producing DICOM compliant images. Text can likewise be acquired using voice recognition technology (VRT) and efficiently rendered into a digital format. Read More

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April 2002
2 Reads

[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
1 Read

What every surgical oncologist should know about digital mammography.

Semin Surg Oncol 2001 Apr-May;20(3):181-6

Department of Radiology, UNC-Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC 27599-7510, USA.

This article reviews the available information on digital mammography for surgeons who care for patients with breast cancer. The limitations of the current film-based technology and why digital mammography promises to improve breast cancer detection and breast lesion diagnosis are described. The basics of digital imaging technology are reviewed, including a description of image contrast and spatial resolution and its variance from currently available clinical digital mammography systems. Read More

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October 2001

Perspective on digital mammography.

Semin Roentgenol 2001 Jul;36(3):195-200

Department of Radiology, University of North Carolina School of Medicine, Chapel Hill, NC, USA.

Digital mammography, particularly through its advanced applications, holds great promise for improved diagnostic accuracy, but the display of the images is not ideal at present. Clinical softcopy workstations are somewhat unwieldy to use, and image processing has not yet been optimized for each machine or for each clinical task. In addition, the cost-effectiveness and accuracy of the technology warrant careful study before digital mammography becomes widely disseminated and potentially replaces screen-film mammography, a technology that has been well documented to reduce breast cancer mortality. Read More

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[Time needs in evaluating digital thoracic images on the monitor in comparison with alternator].

Rontgenpraxis 2001 ;53(6):260-5

Institut für Klinische Radiologie Ludwig-Maximilians-Universität München, Grosshadern.

Purpose: Evaluation of time efficiency in softcopy reading versus hardcopy reading of digital chest x-rays.

Material And Methods: 130 normal and pathologic chest x-rays in two plains were analyzed by 4 experienced radiologist at both a digital workstation and the light box. Reading time and switch time between two patient folders were measured as well as the frequency of post-processing at the monitor. Read More

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New DICOM extensions for softcopy and hardcopy display consistency.

Stud Health Technol Inform 2000 ;77:1201-5

OFFIS e.V., D-26121 Oldenburg, Germany.

The DICOM standard defines in detail how medical images can be communicated. However, the rules on how to interpret the parameters contained in a DICOM image which deal with the image presentation were either lacking or not well defined. As a result, the same image frequently looks different when displayed on different workstations or printed on a film from various printers. Read More

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February 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
2 Reads

Full-field digital mammography designed as a complete system.

Authors:
S Muller

Eur J Radiol 1999 Jul;31(1):25-34

GE Medical Systems, Buc, France.

Although mammography is currently considered by many to be the best tool for the early detection of breast cancer, conventional film-screen imaging is still far from perfect. A fundamental limitation of film-screen mammography is the fact that the detection, display and storage devices are one and the same, making it impossible to separately optimize each device. In addition to a potentially equivalent or better image quality compared to the film-screen technology, full-field digital mammography (FFDM) will provide the radiologist with numerous advantages: digital image management, digital data transfer and new medical applications. Read More

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DICOM versus HL7 for modality interfacing.

Authors:
H Oosterwijk

J Digit Imaging 1998 Aug;11(3 Suppl 1):39-41

OTech Inc, Plano TX, USA.

Digital modalities such as CT, MRI, Ultrasound and Computerized Radiography systems, generating softcopy images to be used by a Picture Archiving and Communication System (PACS), need to identify the images properly in order to retrieve and manage them. In many cases, a technologist re-enters patient demographic and study related information at the modality, even although it is usually already present somewhere in the hospital information system (IS). In order to achieve a higher level of efficiency and uniquely identify the created image objects, it is obvious that an interface between the IS and modality to exchange this information is highly desired. Read More

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[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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Clinical experiences with computed radiography.

Authors:
F E Lindhardt

Eur J Radiol 1996 Jun;22(3):175-85

Department of Radiology, Viborg Sygehus, Denmark.

Computed radiography (CR) based on photostimulable phosphor is currently the only feasible way for a radiological department to digitize the bulk of radiological data: the lung and skeletal examinations. Regarding the quality of images for diagnostic purposes, CR imaging is never inferior to a screen/film system (SF) and for several clinical entities CR is superior. Of the many processing possibilities of the image plate (IP) image, the unsharp masking or edge enhancement should be used at a minimum. Read More

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Electronic Publishing and the Journals of the American Chemical Society.

J Res Natl Inst Stand Technol 1996 May-Jun;101(3):357-360

American Chemical Society, 1155 16th Street, NW, Washington, DC 20036.

The American Chemical Society is developing a number of initiatives that implement emerging electronic technologies in order to provide a broad range of products and services to members and subscribers. Examples of products currently available, or under development, for access via the World Wide Web include supporting information for journals, electronic ads, color graphics and entire journals. Other activities employ e-mail, CD-ROMs, and softcopy text. Read More

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January 1996

Evaluation of the medical diagnostic imaging support system based on 2 years of clinical experience.

J Digit Imaging 1995 May;8(2):75-87

Department of Radiology, Madigan Army Medical Center, Tacoma, WA 98431-5000, USA.

The Medical Diagnostic Imaging Support (MDIS) system at Madigan Army Medical Center (MAMC) has been operational in a phased approach since March 1992. Since then, nearly all image acquisition has been digital with progressively increasing primary softcopy diagnosis used. More than 375,000 computed radiography (CR) images as well as other modality images have been archived. Read More

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Physician experience with viewing digital radiographs in an intensive care unit environment.

J Digit Imaging 1993 Feb;6(1):30-6

Department of Radiology, Duke University Medical Center, Durham, NC 27710.

After several years of continuous operation, the utility of digital viewing stations as assessed by bedside clinicians has been investigated through the distribution of questionnaires to past and present users. The results of the questionnaire have indicated that the bedside physicians prefer using the workstations over handling film. For evaluation of line placements, chest tubes, and pleural effusions, the physicians prefer softcopy display over hardcopy. Read More

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February 1993
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