|
| |
 |
| Teleradiology |
It is the electronic transmission of radiological patient images, such as X-rays, CTs and MRIs from one location to another for the purpose of interpretation and/or consultation.
This is done over standard telephone lines, Wide Area Network (WAN), or over a Local Area Network (LAN) or internet. Through teleradiology, images can be sent to another part of the hospital, or to the other locations in our country or around the world.
The images can be sent by computer link for rapid viewing. This is especially critical in emergency situations. Because the teleradiology network can be connected to the radiologists’ homes, no time is lost, even on weekends or during the night. Digitally transmitted images can be presented analyzed and discussed simultaneously at different sites.
The introduction of teleradiology will reduce current costs. It has been found that savings occur in film material, the transportation of patients, staffs as well as from the sharing of resources. With rapid information flow, a further reduction of costs is possible, eg. shorter hospitalization time of patient |
| Streaming |
- No compromise between image quality and transfer time
- Share images instantaneously with lossless quality over any
internet/intranet connection.
What is Streaming Technology?
- Technology that helps user to view the study without the study
material is getting completely downloaded.
- User starts viewing the data on a real-time basis in a few seconds.
- Data gets fetched from the server depending on user selection/interaction.
- Images on Demand
Modality |
# of Images
(Matrix) |
Conventional
download
time |
Initial loading
time
(Thumbnails) |
Refined Image |
CT |
40 (512 x 512) |
24 mins |
34 secs |
11 secs |
MR |
100 (256 x 256) |
29 mins |
28 secs |
2.8 secs |
US |
30 (512 x 512) |
18 mins |
21 secs |
12 secs |
CR |
1 (2370 x 1770) |
10 mins |
9 secs |
100 secs |
INSTARAD(Assumptions)
- Conventional download time are calculated based on 2:1 lossless compression
- Pixel information if of 2 bytes
- Network speed assumed to be consistent at 56 kbps
- Refined image refers to a single image
Technology – Streaming Engine
Anomalies..
Conventional Download
Standard Algorithms do not perform very well on medical Images as they have been designed for natural Images.
Medsphere Research aims to develop optimized compression schemes for medical Images with higher compression and progressive characteristics suitable for streaming.
Anomalies..
Standard Compression Techniques |
|
Requires high bandwidth* |
|
Expensive to run |
|
Intermittent connectivity failure - Data needs to be re-send |
|
Reduces turnaround time for reporting - Long transfer time |
|
* (An MR study of 200 images is of nearly 30Mb of data [after loss less
compression ]; which will require lengthy download time) |
|
Point to Point Solution. |
|
Very Expensive to run; heavy Internet tariff. |
|
No Mobile reporting - once connected to the points the user cannot access
while they are mobile. |
But INSTARAD overcomes these limitations… |
|
|
|
|
 |
