The MRI Teaching File

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Edited by:
Robert Lufkin, M.D.
William Bradley, Jr., M.D., Ph.D.
Michael Brant-Zawadzki, M.D.

Magnetic Resonance Imaging is a complex, rapidly-evolving modality with application in all areas of diagnostic radiology. The successful radiologist must be proficient at MRI; however developing that proficiency is a formidable task. The MRI Teaching File Videodisc provides a broad experience which helps achieve that expertise. The 1,025 teaching cases have been carefully organized to demonstrate the diverse uses of MRI in diagnostic radiology. The multiple operational modes of the software provide different approaches to gaining this knowledge. The program material can be studied in a straightforward didactic mode, a hidden diagnosis mode, a random sequence mode, or in a search-by-diagnosis reference mode, making this a truly unique and powerful resource. The MRI Teaching File is organized into 10 major sections of 100 cases each; Brain I and II: Non-neoplastic disease, Brain III: Neoplastic disease, Spine, Head and Neck, Musculoskeletal, Body, Cardiovascular, Pediatric, and Physics: Principals and Artifacts. It also contains an introductory section on MR angiography.

http://www.medinter.com/vdiscs.htm


Medical Interactive
Compatibility: Windows 95/98
Published: November, 1993
Telephone: 925-283-7995


HOW TO USE THE MRI CD-ROM

The standard Windows interface of pointing and clicking is used
for control of this program. All functions of the program are
invoked by SINGLE-CLICKING the mouse on the icon or object of
interest. The explanations of the various icons used throughout
the program are found on the previous Help screen.


SELECTING IMAGES

When a case is first selected, a low resolution copy of the first
image in the case is loaded into the small window in the upper
left corner of the case screen. "Image 1" is displayed above the
window, and a brief description of Image 1 is displayed below the
window. The image displayed in the small window is changed by
clicking on the scroll bar below the image description.

You'll also see low resolution copies of all the available images
presented in a 4 by 4 grid in the main image window.

You can select the image you want to view in high resolution by
three different methods:

1. Click on any one of the images in the 4 by 4 grid
in the main window. This will load that specific
image into the main window.
2. Click anywhere on the image in the small window.
This will load that image into the main window.
3. Click on the left or right arrowhead icons (located
on the right edge of the screen). This will load
either the next or previous image of the case into
the main window.


IMAGE CLOSE-UPS

Close-ups of the image in the main window can be selected by the
use of the controls below the small window. The size of the
close-up is selected by the slider bar labeled "Box size". The
portion of the image that will be included in the close-up is
indicated by the dotted box in the small window. The position of
the close-up is controlled by the four arrow buttons surrounding
the red dot. Once the close-up size and location have been
selected, clicking on the red dot will load the selected close-up
image.


HARDWARE REQUIREMENTS

IBM Compatible PC
80486 CPU (66 MHz recommended)
4 megabytes of memory (or greater)
Windows 3.1 (or greater)
CD-ROM drive (double-speed or faster recommended)
Designed for 640 x 480 screen resolution with:
True Color VGA (16.7 million colors)
or
256 Color VGA

Under 16.7 million color mode (True Color), you will get the full
256-level gray scale for the images. Also any color slides that
were recorded on the CD-ROM are viewable in full color.

Under 256 color mode, the 256-level gray scale images are
remapped onto a 236-level gray scale. Also, the color slides on
the CD-ROM are converted to gray-scale images, and are not
viewable in color. These are hardware limitations of the 256
color mode.


COMMON PROBLEMS

Why do the images look grainy?

The images were designed to be viewed on a VGA system using
either 16.7 million colors or 256 colors. Make sure your VGA
card is set to either of these color depths. Do not set your
VGA to any other color depth (such as 16 color, 16,000 color,
32,000 color, or 64,000 color) since the program will perform
erratically under those settings




 
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