A conquest based DICOM solution for a cathlab

nedo · Oct 3rd 2010

Hello guys,

First off this is my first post so I'm sorry if I'd show off as noob or something, but I need some help and witnessed many acts of pure altruism on this forum;)

I'm trying to set up a simple solution in an cardiologic angiography lab somewhere distant in the country and want to allow my users to consult coronarography movies from home. I've successfuly compiled conquest 1.4.16 beta on an Ubuntu Server 10.6 with 2.6.32 kernel (64-bit). Even cgi/bin dgate works. (it's worth noting that in your linux manual you should note to do do all make and make install with sudo, otherwise you'll get some syntax errors).

I want my users to get the movies in three ways a) via Osirix on their macbooks b) via Osirix on their iPhones, c) via web browser (if it is possible)

Currently I'm working on some kind of VPN solution, but it's tricky because of some provider issues. And here come my two questions

1. Since the data we use composes of frames and are movies i'd like to view the frames on the web browser in some kind of consecutive way. When I use
http://{conquest_ip}/cgi-bin/dgate?port=5678&address=127.0.0.1&mode=serversideviewer&series=168/10/ST:1.3.12.2.1107.5.4.5.135433.30000010041407495173400000317&size=560
I can only input frame number and click load (or press enter). Since a movie consists of about 30-100 frames it would be wonderful to put this in some kind of a loop, or have a button to advance to next frame. do you think this is possible?

2. I've been trying to set up acrnema.map in some kind of promiscuous way.
I'd like to be able for my users to get to the server via remote addresses by port forwarding (for example on their iphones via 3G). I've been trying to put * as the ip address but it never worked to retrieve the images to osirix until i placed a fixed ip address. Do you know of a way to set up a trusted location basing only on its' AEtitle?

I know it is not safe but I'm just asking that for informational purposes.
Anyways - the server is a charm, I've been using dcm4che before and find this one really easy to wrap & up.

Thanks in advance for your help

I have two questions

marcelvanherk · Oct 3rd 2010

Hi,

your first question is easy, but requires some javascript stuff. I will give it a try later tonight.

The second question is more dificult

if you have port forwarding (I use myentunnel) you should setup:

client server
local port 5678 --> remote port 5678
remote port 104 --> local port 104

Then ACRNEMA.MAP should show

AETITLE 127.0.0.1 104 un

I.e. the server sends to its own machine, where the port is forwarded to the remote machine.

For many clients you can use:

AE* 127.0.0.1 * un

Where AE104 replies to port 104 etc.

In the hospital we use

V* * 1234 un

I.e., the viewer with AE V192.168.1.1 will be assumed on location 192.168.1.1

Hope this helps!

Marcel

marcelvanherk · Oct 3rd 2010

Hi,

The buttons require an update of the dgate in cgi-bin (change source, recompile and copy dgate there). Find this block of code in dgate.cpp and update it as listed to add the buttons. I will add in the next release if you are happy with it. Or help me out with some smarter JavaScript...

Code

/* very simple jave-script based viewer with server side processing */
  if (strcmp(mode, "serversideviewer")==0)
  { char *p;


    HTML("Content-type: text/html\n");
    HTML("<HEAD><TITLE>Conquest DICOM server - version %s server side viewer</TITLE></HEAD>", DGATE_VERSION);
    HTML("<BODY BGCOLOR='CFDFCF'>");
    HTML("<H2>Conquest DICOM server - version %s server side viewer</H2>", DGATE_VERSION);


    HTML("<SCRIPT language=JavaScript>");
    HTML("function load()");
    HTML("{ document.images[0].src = 'dgate%s?%s&mode=slice'+", ex, extra);
    HTML("                           '&graphic=' + document.forms[0].graphic.value +");
    HTML("                           '&slice='   + document.forms[0].slice.value +");
    HTML("                           '&lw='      + document.forms[0].level.value + '/' + document.forms[0].window.value + '/' + document.forms[0].frame.value");
    HTML("}");
// NEW:
    HTML("function nextslice()");
    HTML("{ document.forms[0].slice.selectedIndex = document.forms[0].slice.selectedIndex + 1; load()");
    HTML("}");
    HTML("function nextframe()");
    HTML("{ document.forms[0].frame.value = parseInt(document.forms[0].frame.value)+1; load()");
    HTML("}")
// END NEW
    HTML("</SCRIPT>");


    HTML("<IMG SRC=loading.jpg BORDER=0 HEIGHT=%s>", size);


    HTML("<FORM>");
    HTML("Slice: ");
    HTML("  <select name=slice onchange=load()>");


    p = strchr(series2, ':');
    if (p) *p = '|';
    sprintf(command, "imagelister:local|%s|:<option value=%%s:%%s>%%s</option>", series2);
    SendServerCommand("", command, console);


    HTML("  </select>");
// NEW:
    HTML("  <INPUT TYPE=BUTTON VALUE=next onclick=nextslice() >");
    HTML("Level:");
    HTML("  <INPUT name=level size=4 onchange=load() >");
    HTML("Window:");
    HTML("  <INPUT name=window size=4 onchange=load() >");
    HTML("Frame:");
    HTML("  <INPUT name=frame size=4 onchange=load() value=0>");
// NEW:
    HTML("  <INPUT TYPE=BUTTON VALUE=next onclick=nextframe() >");
    HTML("Color:");
    HTML("  <select name=graphic onchange=load()>");
    if (strcmp(graphic, "bmp")==0)
    { HTML("    <option value=bmp>yes</option>");
      HTML("    <option value=gif>no</option>");
      HTML("    <option value=jpg>jpg</option>");
    }
    else if (strcmp(graphic, "gif")==0)
    { HTML("    <option value=gif>no</option>");
      HTML("    <option value=bmp>yes</option>");
      HTML("    <option value=jpg>jpg</option>");
    }
    else if (strcmp(graphic, "jpg")==0)
    { HTML("    <option value=jpg>jpg</option>");
      HTML("    <option value=bmp>yes</option>");
      HTML("    <option value=gif>no</option>");
    }
    HTML("  </select>");
    HTML("  <INPUT TYPE=BUTTON VALUE=load onclick=load() >");
    HTML("</FORM>");


    HTML("<SCRIPT language=JavaScript>");
    HTML("  document.onload=load()");
    HTML("</SCRIPT>");


    HTML("</BODY>");
    exit(0);
  };

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Note: I have released the 1.4.16beta4 which contains this change above.

Marcel

nedo · Oct 3rd 2010

Dear Marcel,

Thank you very much for that! You have no idea how practical this is for us.
I'd be very happy to provide you with some advanced javascript like a slider for example, but I usually use jquery for that and I believe that there's no use of including large custom js libraries in your program for the sake of sanity.

The button works great. It would be even better if you could also add a previous button (or in order to save space < and >). You know how it works. You press next 30 times, then you see something and you're 2 frames ahead. you need to go back in the same manner, not by entering the number.

Tomorrow I have a long flight, and have to get some sleep, but If you'll be in need I can make some fancy js for disabling the controls if there are no frames ahead or back.

Again. Thank you.

marcelvanherk · Oct 4th 2010

Hi,

No problem. Indeed I do not like to use any libraries to keep conquest as self contained as possible. If you edit the code yourself to add the other buttons or sliders I will gladly incorporate your code. The problem with limiting/enabling the frame control is that it depends on the slice control, so conquest needs to find out how many slices there are for each image in the series while making tha page and entering that in an array - that is not totally trivial.

The back buttons are obviously trivial.

Marcel

A conquest based DICOM solution for a cathlab

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