Accession Number : ADA321757

Title :   Evaluation of a Digital Telemammography System: A Model for a Regional System.

Descriptive Note : Annual rept.,

Corporate Author : VIRGINIA UNIV CHARLOTTESVILLE

Personal Author(s) : Shaw de Parades, Ellen

PDF Url : ADA321757

Report Date : OCT 1996

Pagination or Media Count : 163

Abstract : The research hypothesis being tested is that a telemammography system utilizing a laser film digitizer at the transmitting site (with a 50-micron pixel size for spatial resolution and a 12-bit pixel range for contrast) and interactive two grayscale display monitors (2048 x 2560 x 8/12 bits) at the receiving site can be used to interpret mammography images with an accuracy level sufficient for primary diagnosis. To test the research hypothesis, the following four aims are to be completed: (1) Collection of 200 normal cases and 200 abnormal cases of specifically selected analog mammographic film images and patient data for use in evaluating a telemammography system; (2) convert the collected database of analog mammographic films into digital arrays using a laser film digitizer with a 50-micron pixel spot size and 12 bits per pix of dynamic range; (3) conduct an ROC analysis of the retrospective database of the analog mammographic image and digitized arrays displayed on the two monitor interactive gray scale workstation, each monitor displaying 2048 x 2560 x 8/12 bit portions of the 4K x 4k digitals arrays; (4) implement a digital transmission for evaluation of the telemammography system; (5) implement and test a quality control program and (6) evaluate the throughput rate of the implemented telemammography system.

Descriptors :   *DIGITAL SYSTEMS, *MAMMOGRAPHY, DATA BASES, MODELS, RESOLUTION, FILMS, ARRAYS, LASERS, DIAGNOSIS(MEDICINE), IMAGES, QUALITY CONTROL, THROUGHPUT, ANALOG TO DIGITAL CONVERTERS, PIXELS, TRANSMITTING, ANALOG SYSTEMS, GRAY SCALE.

Subject Categories : Medicine and Medical Research
      Lasers and Masers
      Computer Programming and Software
      Computer Hardware
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE