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No. A video grabber card (VGC) is required only if you wish to transmit the video of live surgery. It is basically needed to interface your Laparoscopic / Endoscopic Camera with the computer/laptop.
If you just need to view the surgery transmission, then the grabber card is not required.
The sound from the speaker interferes with the microphone and echoes your voice, thus disturb others. Hence using a separate headphone and microphone is preferred. A studio grade microphone provides the best quality sound.
The latest Laparoscopy / Endoscopy systems have High Definition (HD) digital cameras. However, you need to have high bandwidth Internet connection to transmit a HD quality video. The S-VIDEO and COMP VIDEO outputs of the CCU provide good and acceptable quality videos which can be viewed even at lower bandwidths. The various output options available in a Medical Grade Laparoscopy / Endoscopy Camera Control unit (CCU) are shown here:
Transmitting analog video using a Video Grabber Card
Use the Video Grabber Card (VGC) to connect your computer to the CCU. Below figure shows a typical VGC. A VGC may consist:
A CCU can be interfaced with the computer either by using the COMP VIDEO (Composite Video) or S-VIDEO outs.
| Connecting the computer and CCU using the COMP VIDEO port
|Transmitting digital video using a firewire cable
To transmit the video digitally, connect the Camera to the computer using a firewire cable. You can use a firewire cable with
|Connecting the computer and the CCU using a firewire cable
Any Laparoscopic/ Endoscopic surgeon who wishes to watch videos of other Laparoscopic surgeons can register on LapGuru portal. Also any hospitals or medical institutes can become a member on this portal.
LapGuru is an information repository for the less experienced surgeons and a perfect platform for the experienced surgeons to share their knowledge. LapGuru has a number of registered surgeons who are available to answer queries during surgery if they are invited to the surgery transmission and where surgeons transmit the videos of their live surgeries for the other less experienced surgeons to watch and learn.
Yes. You must register on the LapGuru portal in order to watch the surgery video. Registration process is very simple and it hardly takes 2-3 minutes time.
Click Register. You will get a confirmation email from firstname.lastname@example.org on successful registration on the email ID you registered with on LapGuru portal.
From the Device drop down list, select the video device that you have connected to your computer as shown below.
To configure this video device, click Video Capture Device Settings A new Settings window pops up.
Depending on your computer – CCU connections, select either ‘Video Composite In’ or ‘Video S-Video In’ from the Input dropdown list.
Yes. You may have a Private transmission through LapGuru, and only people having its unique transmission code will be able to watch the same. To create a private surgery schedule:
Please ensure that your microphone is properly connected to the computer. The Flash player automatically detects the microphone that is connected to your computer.
Using the inbuilt microphone of the laptop can create an echo and can cause a lot of disturbance to the other users. Do not use the inbuilt mic of your laptop instead use a separate headphone and microphone.
When the speaker is used to transmit audio (like in an auditorium) the user/ trainer should use a unidirectional microphone, otherwise, the audio coming from the speaker will be fed back to the mic and may create an echo.
Now, you need not click Allow every time you start the flash player
If the video gets stuck in between, restart the flash player window again as mentioned below:
Quality of the video on the projector depends on the quality of the transmitted video. A SD video transmission will look blurred or pixilated on a projected screen, however, if the video is transmitted in HD, the pixilation would be minimal or not there at all.
The video quality depends on the source of the video, the bandwidth available at the transmitter end and the type of the transmission (SD, SD+, HD are the types in increasing order of quality). The quality of the video also depends on the speed of the viewer’s Internet connection (bandwidth). Typically, SD will require around 500 kbps of bandwidth, SD+ will require around 2Mbps of bandwidth and HD will require around 4 Mbps of bandwidth.
If the video is getting transmitted at bandwidth higher than that of your available bandwidth, you may see a jerky or choppy video. Ideally, the viewer needs to have same download speed as that of the uploading speed of the transmitter. To check the speed of your Internet connection, please visit http://www.speedtest.net and click on Begin Test.