Represents a drawable control to display cross cut-lines that slice a 3D object into two generated images.
function lt.Controls.Medical.CutLines
extends lt.Controls.Medical.Drawable
class lt.Controls.Medical.CutLines()
extends Drawable
Cut-lines have the following properties:
Intersection at a center point. Dragging the center point moves both cut-lines.
Perpendicular to each other. Hence, rotating one of them, rotates the other in the same direction and at the same proportion.
Rotation by handle. At the very far end there are handles to move or rotate the cut-lines.
Slice thickness change by clicking and dragging. If between the cut-line handle and the center point there is a thickness handle, then you can change the thickness of the cut-line by clicking and dragging the handle. This action is displayed as a transparent area around the cut-lines.
import { MedicalViewer_MultiFrame_Example } from "../MedicalViewer_MultiFrame_Example";
export class Cutlines_Example {
private viewerExample;
private medicalViewer;
constructor() {
this.viewerExample = new MedicalViewer_MultiFrame_Example(this.run);
}
private fillVolumeInfo(cell: lt.Controls.Medical.Cell): lt.Controls.Medical.Volume3DInformation {
if (!cell)
return;
if (!cell.frames || (cell.frames.count < 2))
return;
var firstFrame: lt.Controls.Medical.Frame = cell.frames.get_item(0);
var lastFrame: lt.Controls.Medical.Frame = cell.frames.get_item(cell.frames.count - 1);
var width = firstFrame.width;
var height = firstFrame.height;
var rowspacing = firstFrame.rowSpacing;
var colSpacing = firstFrame.columnSpacing;
var firstPosition = lt.Controls.Medical.LeadPoint3D.create(firstFrame.imagePosition[0], firstFrame.imagePosition[1], firstFrame.imagePosition[2]);
var lastPostion = lt.Controls.Medical.LeadPoint3D.create(lastFrame.imagePosition[0], lastFrame.imagePosition[1], lastFrame.imagePosition[2]);
var orientation = firstFrame.imageOrientation;
return new lt.Controls.Medical.Volume3DInformation(orientation, firstPosition, lastPostion, rowspacing, colSpacing, width, height);
}
private UpdateFrameInformation = function (engine3D, cell, referenceFrame) {
var _cell = cell;
var _referenceFrame = referenceFrame;
engine3D.add_statusChanged(function (sender, args: lt.Controls.Medical.StatusChangedEventArgs) {
switch (args.status) {
case lt.Controls.Medical.Object3DStatus.ready:
var index = 0;
var length = _cell.frames.count;
for (index = 0; index < length; index++) {
var info: any = _referenceFrame.information.clone();
info.bitsPerPixel = _referenceFrame.information.bitsPerPixel;
info.photometricInterpretation = _referenceFrame.information.photometricInterpretation;
info.windowWidth = _referenceFrame.windowWidth;
info.windowCenter = info.windowWidth >> 1;
info.minValue = _referenceFrame.information.minValue;
info.maxValue = _referenceFrame.information.maxValue;
info.lowBit = _referenceFrame.information.lowBit;
info.highBit = _referenceFrame.information.highBit;
info.autoScaleSlope = _referenceFrame.information.autoScaleSlope;
info.autoScaleIntercept = _referenceFrame.information.autoScaleIntercept;
info.signed = _referenceFrame.information.signed;
cell.frames.get_item(index).set_information(info);
}
break;
}
});
}
private run = (medicalViewer: lt.Controls.Medical.MedicalViewer, authenticationCode: string) => {
this.medicalViewer = medicalViewer;
// we are going to get the cell that contains the polygon in order to generate the panoramic cell.
var axial: lt.Controls.Medical.Cell = this.medicalViewer.layout.cells.get_item(0);
var _frame: lt.Controls.Medical.Frame = axial.frames.get_item(axial.currentOffset);
var engine3D: lt.Controls.Medical.Object3DEngine = new lt.Controls.Medical.Object3DEngine(axial.divID + "_3D_Volume");
engine3D.info = this.fillVolumeInfo(axial);
var sagittal = new lt.Controls.Medical.MPRCell(axial.viewer, axial, axial.divID, lt.Controls.Medical.RenderingType.server, lt.Controls.Medical.CellMPRType.sagittal);
sagittal.seriesInstanceUID = axial.seriesInstanceUID;
sagittal.studyInstanceUID = axial.studyInstanceUID + "_Sagittal";
sagittal.frameOfReferenceUID = axial.frameOfReferenceUID;
sagittal.frames.add(new lt.Controls.Medical.SliceFrame(sagittal, engine3D));
medicalViewer.layout.cells.add(sagittal);
sagittal.engine = engine3D;
this.UpdateFrameInformation(engine3D, sagittal, _frame);
var coronal = new lt.Controls.Medical.MPRCell(axial.viewer, axial, axial.divID, lt.Controls.Medical.RenderingType.server, lt.Controls.Medical.CellMPRType.coronal);
coronal.seriesInstanceUID = axial.seriesInstanceUID;
coronal.studyInstanceUID = axial.studyInstanceUID + "_Sagittal";
coronal.frameOfReferenceUID = axial.frameOfReferenceUID;
coronal.frames.add(new lt.Controls.Medical.SliceFrame(coronal, engine3D));
medicalViewer.layout.cells.add(coronal);
coronal.engine = engine3D;
this.UpdateFrameInformation(engine3D, coronal, _frame);
var cutline: lt.Controls.Medical.CutLines = null;
if (!axial.drawables["CutLine"]) {
cutline = new lt.Controls.Medical.CutLines(axial);
axial.drawables["CutLine"] = cutline;
}
cutline.firstLineCell = sagittal;
cutline.secondLineCell = coronal;
// this is the service name that will do the server side rendering.
var threed = "https://medicaldemos.leadtools.com/MedicalViewerServiceAsp22/api/threed/";
engine3D.add_request3DData(function (sender, args: lt.Controls.Medical.Request3DDataEventArgs) {
switch (args.type) {
case lt.Controls.Medical.Requested3DDataType.creationProgress:
{
var request3DDataPost = new XMLHttpRequest();
request3DDataPost.onreadystatechange = function (data) {
if (this.readyState == 4 && this.status == 200) {
var percent = parseInt(JSON.parse(this.responseText));
if (engine3D.progress != 100)
engine3D.progress = percent;
}
};
request3DDataPost.open("POST", threed + "CheckProgress", true);
request3DDataPost.setRequestHeader('Content-Type', 'application/json; charset=UTF-8');
var progressSettings =
{
authenticationCookie: authenticationCode,
id: engine3D.id
}
request3DDataPost.send(JSON.stringify(progressSettings));
}
break;
case lt.Controls.Medical.Requested3DDataType.create3DObject:
{
var request3DDataPost = new XMLHttpRequest();;
request3DDataPost.open("POST", threed + "Create3DObject", true);
request3DDataPost.setRequestHeader('Content-Type', 'application/json; charset=UTF-8');
var seriesInstanceUID = "1.3.12.2.1107.5.1.4.50772.30000009122208215356200001997"
var create3DOptions = {
authenticationCookie: authenticationCode,
options: { PatientsOptions: {}, SeriesOptions: { SeriesInstanceUID: seriesInstanceUID }, StudiesOptions: {} },
id: engine3D.id,
renderingType: 0,
extraOptions: { UserData2: "1.3.12.2.1107.5.1.4.50772.30000009122208215356200002253" }
};
request3DDataPost.send(JSON.stringify(create3DOptions));
}
break;
case lt.Controls.Medical.Requested3DDataType.delete3DObject:
{
var request3DDataPost = new XMLHttpRequest();
request3DDataPost.onreadystatechange = function (data) { };
request3DDataPost.open("POST", threed + "End3DObject", true);
request3DDataPost.setRequestHeader('Content-Type', 'application/json; charset=UTF-8');
var endObjectSettings =
{
authenticationCookie: authenticationCode,
id: engine3D.id
}
request3DDataPost.send(JSON.stringify(endObjectSettings));
}
case lt.Controls.Medical.Requested3DDataType.none:
{
var request3DDataPost = new XMLHttpRequest();
var json = JSON.parse(args.JSON);
var widthCurve = json['widthCurve'];
var heightCurve = json['heightCurve'];
var polygonInfo = JSON.stringify(json['polygonInfo']);
var generateSliceData = {
authenticationCookie: authenticationCode,
id: engine3D.id,
widthCurve: widthCurve,
heightCurve: heightCurve,
polygonInfo: polygonInfo
};
request3DDataPost.onreadystatechange = function (result: any) {
if (this.readyState == 4 && this.status == 200) {
var url = this.responseText;
var slice = <lt.Controls.Medical.SliceFrame>args.frame;
slice.URI = threed + "Get3DSlice?auth=" + encodeURIComponent(authenticationCode) + "&url=" + url + "&fileName=";
}
};
request3DDataPost.open("POST", threed + "Generate3DSlice", true);
request3DDataPost.setRequestHeader('Content-Type', 'application/json; charset=UTF-8');
request3DDataPost.send(JSON.stringify(generateSliceData));
}
break;
}
});
engine3D.start("", axial.studyInstanceUID, axial.seriesInstanceUID);
}
}
import { MedicalViewer_MultiFrame_Example } from "../MedicalViewer_MultiFrame_Example";
export class Cutlines_Example {
constructor() {
var _this = this;
this.UpdateFrameInformation = function (engine3D, cell, referenceFrame) {
var _cell = cell;
var _referenceFrame = referenceFrame;
engine3D.add_statusChanged(function (sender, args) {
switch (args.status) {
case lt.Controls.Medical.Object3DStatus.ready:
var index = 0;
var length = _cell.frames.count;
for (index = 0; index < length; index++) {
var info = _referenceFrame.information.clone();
info.bitsPerPixel = _referenceFrame.information.bitsPerPixel;
info.photometricInterpretation = _referenceFrame.information.photometricInterpretation;
info.windowWidth = _referenceFrame.windowWidth;
info.windowCenter = info.windowWidth >> 1;
info.minValue = _referenceFrame.information.minValue;
info.maxValue = _referenceFrame.information.maxValue;
info.lowBit = _referenceFrame.information.lowBit;
info.highBit = _referenceFrame.information.highBit;
info.autoScaleSlope = _referenceFrame.information.autoScaleSlope;
info.autoScaleIntercept = _referenceFrame.information.autoScaleIntercept;
info.signed = _referenceFrame.information.signed;
cell.frames.get_item(index).set_information(info);
}
break;
}
});
};
this.run = function (medicalViewer, authenticationCode) {
_this.medicalViewer = medicalViewer;
// we are going to get the cell that contains the polygon in order to generate the panoramic cell.
var axial = _this.medicalViewer.layout.cells.get_item(0);
var _frame = axial.frames.get_item(axial.currentOffset);
var engine3D = new lt.Controls.Medical.Object3DEngine(axial.divID + "_3D_Volume");
engine3D.info = _this.fillVolumeInfo(axial);
var sagittal = new lt.Controls.Medical.MPRCell(axial.viewer, axial, axial.divID, lt.Controls.Medical.CellMPRType.sagittal);
sagittal.seriesInstanceUID = axial.seriesInstanceUID;
sagittal.studyInstanceUID = axial.studyInstanceUID + "_Sagittal";
sagittal.frameOfReferenceUID = axial.frameOfReferenceUID;
sagittal.frames.add(new lt.Controls.Medical.SliceFrame(sagittal, engine3D));
medicalViewer.layout.cells.add(sagittal);
sagittal.engine = engine3D;
_this.UpdateFrameInformation(engine3D, sagittal, _frame);
var coronal = new lt.Controls.Medical.MPRCell(axial.viewer, axial, axial.divID, lt.Controls.Medical.CellMPRType.coronal);
coronal.seriesInstanceUID = axial.seriesInstanceUID;
coronal.studyInstanceUID = axial.studyInstanceUID + "_Sagittal";
coronal.frameOfReferenceUID = axial.frameOfReferenceUID;
coronal.frames.add(new lt.Controls.Medical.SliceFrame(coronal, engine3D));
medicalViewer.layout.cells.add(coronal);
coronal.engine = engine3D;
_this.UpdateFrameInformation(engine3D, coronal, _frame);
var cutline = null;
if (!axial.drawables["CutLine"]) {
cutline = new lt.Controls.Medical.CutLines(axial);
axial.drawables["CutLine"] = cutline;
}
cutline.firstLineCell = sagittal;
cutline.secondLineCell = coronal;
// this is the service name that will do the server side rendering.
var threed = "https://medicaldemos.leadtools.com/MedicalViewerServiceAsp22/api/threed/";
engine3D.add_request3DData(function (sender, args) {
switch (args.type) {
case lt.Controls.Medical.Requested3DDataType.creationProgress:
{
var request3DDataPost = new XMLHttpRequest();
request3DDataPost.onreadystatechange = function (data) {
if (this.readyState == 4 && this.status == 200) {
var percent = parseInt(JSON.parse(this.responseText));
if (engine3D.progress != 100)
engine3D.progress = percent;
}
};
request3DDataPost.open("POST", threed + "CheckProgress", true);
request3DDataPost.setRequestHeader('Content-Type', 'application/json; charset=UTF-8');
var progressSettings = {
authenticationCookie: authenticationCode,
id: engine3D.id
};
request3DDataPost.send(JSON.stringify(progressSettings));
}
break;
case lt.Controls.Medical.Requested3DDataType.create3DObject:
{
var request3DDataPost = new XMLHttpRequest();
;
request3DDataPost.open("POST", threed + "Create3DObject", true);
request3DDataPost.setRequestHeader('Content-Type', 'application/json; charset=UTF-8');
var seriesInstanceUID = "1.3.12.2.1107.5.1.4.50772.30000009122208215356200001997";
var create3DOptions = {
authenticationCookie: authenticationCode,
options: { PatientsOptions: {}, SeriesOptions: { SeriesInstanceUID: seriesInstanceUID }, StudiesOptions: {} },
id: engine3D.id,
renderingType: 0,
extraOptions: { UserData2: "1.3.12.2.1107.5.1.4.50772.30000009122208215356200002253" }
};
request3DDataPost.send(JSON.stringify(create3DOptions));
}
break;
case lt.Controls.Medical.Requested3DDataType.delete3DObject:
{
var request3DDataPost = new XMLHttpRequest();
request3DDataPost.onreadystatechange = function (data) { };
request3DDataPost.open("POST", threed + "End3DObject", true);
request3DDataPost.setRequestHeader('Content-Type', 'application/json; charset=UTF-8');
var endObjectSettings = {
authenticationCookie: authenticationCode,
id: engine3D.id
};
request3DDataPost.send(JSON.stringify(endObjectSettings));
}
case lt.Controls.Medical.Requested3DDataType.none:
{
var request3DDataPost = new XMLHttpRequest();
var json = JSON.parse(args.JSON);
var widthCurve = json['widthCurve'];
var heightCurve = json['heightCurve'];
var polygonInfo = JSON.stringify(json['polygonInfo']);
var generateSliceData = {
authenticationCookie: authenticationCode,
id: engine3D.id,
widthCurve: widthCurve,
heightCurve: heightCurve,
polygonInfo: polygonInfo
};
request3DDataPost.onreadystatechange = function (result) {
if (this.readyState == 4 && this.status == 200) {
var url = this.responseText;
var slice = args.frame;
slice.URI = threed + "Get3DSlice?auth=" + encodeURIComponent(authenticationCode) + "&url=" + url + "&fileName=";
}
};
request3DDataPost.open("POST", threed + "Generate3DSlice", true);
request3DDataPost.setRequestHeader('Content-Type', 'application/json; charset=UTF-8');
request3DDataPost.send(JSON.stringify(generateSliceData));
}
break;
}
});
engine3D.start("", axial.studyInstanceUID, axial.seriesInstanceUID);
};
this.fillVolumeInfo = function (cell) {
if (!cell)
return;
if (!cell.frames || (cell.frames.count < 2))
return;
var firstFrame = cell.frames.get_item(0);
var lastFrame = cell.frames.get_item(cell.frames.count - 1);
var width = firstFrame.width;
var height = firstFrame.height;
var rowspacing = firstFrame.rowSpacing;
var colSpacing = firstFrame.columnSpacing;
var firstPosition = lt.Controls.Medical.LeadPoint3D.create(firstFrame.imagePosition[0], firstFrame.imagePosition[1], firstFrame.imagePosition[2]);
var lastPostion = lt.Controls.Medical.LeadPoint3D.create(lastFrame.imagePosition[0], lastFrame.imagePosition[1], lastFrame.imagePosition[2]);
var orientation = firstFrame.imageOrientation;
return new lt.Controls.Medical.Volume3DInformation(orientation, firstPosition, lastPostion, rowspacing, colSpacing, width, height);
};
this.viewerExample = new MedicalViewer_MultiFrame_Example(this.run);
}
}
export class MedicalViewer_MultiFrame_Example {
// LEADTOOLS ImageViewer to be used with this example
protected medicalViewer: lt.Controls.Medical.MedicalViewer = null;
// Generic state value used by the examples
public timesClicked: number = 0;
public authenticationCode: string = "";
constructor(callback?: (medicalViewer: lt.Controls.Medical.MedicalViewer, authenticationCode: string) => void) {
// Set the LEADTOOLS license. Replace this with your actual license file
lt.RasterSupport.setLicenseUri("https://demo.leadtools.com/licenses/js/LEADTOOLSEVAL.txt", "EVAL", null);
// Create an image viewer inside the imageViewerDiv element
const imageViewerDiv: HTMLDivElement = <HTMLDivElement>document.getElementById("imageViewerDiv");
const createOptions: lt.Controls.ImageViewerCreateOptions = new lt.Controls.ImageViewerCreateOptions(imageViewerDiv);
var aspPath = "https://medicaldemos.leadtools.com/MedicalViewerServiceAsp22/";
this.medicalViewer = new lt.Controls.Medical.MedicalViewer(imageViewerDiv, 2, 2);
this.medicalViewer.onSizeChanged();
var cell = new lt.Controls.Medical.Cell(this.medicalViewer, null, 1, 1);
// Set the show border to "true", to show a border around the cell.
cell.set_showFrameBorder(true);
// Add the cell to the viewer.
this.medicalViewer.layout.get_items().add(cell);
// [optional] Select the cell (it can also be selected by clicking on it.)
cell.set_selected(true);
cell.fullDownload = false;
cell.marginFramesCount = 3;
var self = this;
// we are now going to to download an image from leadtools medical viewer demo web site, you need to change this to download images from your database.
var xhttp = new XMLHttpRequest();
xhttp.onreadystatechange = function (data) {
if (this.readyState == 4 && this.status == 200) {
// here we got the authentication Code that we need to retrieve the images from leadtools database.
self.authenticationCode = this.responseText;
var encodedAuthenticationCode = self.authenticationCode;
// we get here the object retrieve address that points to a service that retireves the information and the images from the server.
var objectRetrieveAddress = aspPath + "api/retrieve";
var objectRetrieveQueryAddress = aspPath + "api/query";
var studyInstanceUID = "1.3.12.2.1107.5.1.4.50772.30000009122208074910900000022";
// this is the series instance UID that contains all the frames that will be retrieved.
var seriesInstanceUID = "1.3.12.2.1107.5.1.4.50772.30000009122208215356200001997"
cell.seriesInstanceUID = seriesInstanceUID;
cell.studyInstanceUID = studyInstanceUID;
// we are generating the address for retrieving the instances information.
var queryArchive = objectRetrieveQueryAddress;
queryArchive += "/FindInstances";
var getStackRequest = new XMLHttpRequest();
getStackRequest.onreadystatechange = function (data) {
if (this.readyState == 4 && this.status == 200) {
var json = JSON.parse(this.responseText);
var instanceIndex = 0;
// if instance count is zero, then the study doesn't exist on the server.
var instanceCount = json.length;
// add frames based on the size of the number of instances.
for (instanceIndex = 0; instanceIndex < instanceCount; instanceIndex++) {
var cellFrame = new lt.Controls.Medical.Frame(cell);
cell.get_frames().add(cellFrame);
}
// loop through every frame, and prepare the data.
for (instanceIndex = 0; instanceIndex < instanceCount; instanceIndex++) {
cellFrame = cell.get_frames().get_item(instanceIndex);
var pageInfo = json[instanceIndex].Pages[0];
cellFrame.imagePosition = pageInfo.ImagePositionPatientArray;
cellFrame.imageOrientation = pageInfo.ImageOrientationPatientArray;
if (pageInfo.PixelSpacingPatientArray != null && pageInfo.PixelSpacingPatientArray.length == 2) {
cellFrame.set_rowSpacing(parseFloat(pageInfo.PixelSpacingPatientArray[1]));
cellFrame.set_columnSpacing(parseFloat(pageInfo.PixelSpacingPatientArray[0]));
}
// now, this is the MRTI info that contains the image information, width, height, tiles....etc.
var mrtiInfo = new lt.Controls.Medical.MRTIImage();
// The image dpi.
mrtiInfo.fullDpi = lt.LeadSizeD.create(150, 150);
// the tile size, recommended value is 256
mrtiInfo.tileSize = lt.LeadSizeD.create(512, 512);
mrtiInfo.frameIndex = 0;
// does this image support window leve.
mrtiInfo.supportWindowLevel = true;
// different resolution for the image.
var resolutions = [{ "width": 512, "height": 512 }, { "width": 256, "height": 256 }, { "width": 128, "height": 128 }, { "width": 64, "height": 64 }];
mrtiInfo.resolutions = [];
for (var i = 0; i < resolutions.length; i++) {
mrtiInfo.resolutions[i] = lt.LeadSizeD.create(resolutions[i].width, resolutions[i].height);
}
// the image width and height.
cellFrame.set_width(mrtiInfo.resolutions[0].width);
cellFrame.set_height(mrtiInfo.resolutions[0].height);
// the image full size.
mrtiInfo.fullSize = lt.LeadSizeD.create(cellFrame.get_width(), cellFrame.get_height());
// now we need the image URL,
var imageUri = objectRetrieveAddress;
imageUri += "/GetImageTile?auth=";
imageUri += encodedAuthenticationCode;
// this the image instance UID, change this if you want to retrieve anything else.
imageUri += "&instance=" + json[instanceIndex].SOPInstanceUID;
mrtiInfo.imageUri = imageUri;
// set this info to the cell frame.
cellFrame.mrtiInfo = mrtiInfo;
// now we need to set the information for the image so we can do window level.
var imageInfo = new lt.Controls.Medical.DICOMImageInformation();
// set the image width and height.
imageInfo.width = 512;
imageInfo.height = 512;
// bits per pixel for the image
imageInfo.bitsPerPixel = 16;
// low and high bit.
imageInfo.lowBit = 0;
imageInfo.highBit = 11;
// other information, setting some of them to zero means that the toolkit will try and calculate it by itself, but you can always get those values from the DicomDataSet.
imageInfo.autoScaleIntercept = -1024;
imageInfo.autoScaleSlope = 1;
imageInfo.minValue = 0;
imageInfo.maxValue = 0;
imageInfo.windowWidth = 200;
imageInfo.windowCenter = 40;
imageInfo.signed = false;
imageInfo.photometricInterpretation = 'MONOCHROME2';
imageInfo.firstStoredPixelValueMapped = 0;
// set these information to the frame.
cellFrame.set_information(imageInfo);
}
// scroll to the middle of the series.
cell.currentOffset = instanceCount >> 1;
}
}
getStackRequest.open("POST", queryArchive, true);
getStackRequest.setRequestHeader('Content-Type', 'application/json; charset=UTF-8');
var queryParams =
{
"PatientsOptions": {},
"StudiesOptions": {},
"SeriesOptions": { "SeriesInstanceUID": seriesInstanceUID }
};
var findInstanceData = {
authenticationCookie: encodedAuthenticationCode,
options: queryParams,
extraOptions: { UserData2: "" }
};
getStackRequest.send(JSON.stringify(findInstanceData));
}
};
// We are trying here to get an image from the Leadtools database, we need to login and get the authentication code.
xhttp.open("POST", "https://medicaldemos.leadtools.com/MedicalViewerServiceAsp22/api/auth/AuthenticateUser", true);
xhttp.setRequestHeader('Content-Type', 'application/json; charset=UTF-8');
// we log in as a 'guest', after calling the below line, we will receive the authentication code sent via 'onreadystatechange' above.
xhttp.send(JSON.stringify({ userName: 'guest', password: 'guest', userData: '' }));
const exampleButton = document.getElementById("exampleButton");
exampleButton.addEventListener("click", () => {
this.timesClicked++;
// Run the example
if (callback)
callback(this.medicalViewer, this.authenticationCode);
});
}
}
export class MedicalViewer_MultiFrame_Example {
constructor(callback) {
var _this = this;
// LEADTOOLS ImageViewer to be used with this example
this.medicalViewer = null;
// Generic state value used by the examples
this.timesClicked = 0;
this.authenticationCode = "";
// Set the LEADTOOLS license. Replace this with your actual license file
lt.RasterSupport.setLicenseUri("https://demo.leadtools.com/licenses/js/LEADTOOLSEVAL.txt", "EVAL", null);
// Create an image viewer inside the imageViewerDiv element
var imageViewerDiv = document.getElementById("imageViewerDiv");
var createOptions = new lt.Controls.ImageViewerCreateOptions(imageViewerDiv);
var aspPath = "https://medicaldemos.leadtools.com/MedicalViewerServiceAsp22/";
this.medicalViewer = new lt.Controls.Medical.MedicalViewer(imageViewerDiv, 2, 2);
this.medicalViewer.onSizeChanged();
var cell = new lt.Controls.Medical.Cell(this.medicalViewer, null, 1, 1);
// Set the show border to "true", to show a border around the cell.
cell.set_showFrameBorder(true);
// Add the cell to the viewer.
this.medicalViewer.layout.get_items().add(cell);
// [optional] Select the cell (it can also be selected by clicking on it.)
cell.set_selected(true);
cell.fullDownload = false;
cell.marginFramesCount = 3;
var self = this;
// we are now going to to download an image from leadtools medical viewer demo web site, you need to change this to download images from your database.
var xhttp = new XMLHttpRequest();
xhttp.onreadystatechange = function (data) {
if (this.readyState == 4 && this.status == 200) {
// here we got the authentication Code that we need to retrieve the images from leadtools database.
self.authenticationCode = this.responseText;
var encodedAuthenticationCode = self.authenticationCode;
// we get here the object retrieve address that points to a service that retireves the information and the images from the server.
var objectRetrieveAddress = aspPath + "api/retrieve";
var objectRetrieveQueryAddress = aspPath + "api/query";
var studyInstanceUID = "1.3.12.2.1107.5.1.4.50772.30000009122208074910900000022";
// this is the series instance UID that contains all the frames that will be retrieved.
var seriesInstanceUID = "1.3.12.2.1107.5.1.4.50772.30000009122208215356200001997";
cell.seriesInstanceUID = seriesInstanceUID;
cell.studyInstanceUID = studyInstanceUID;
// we are generating the address for retrieving the instances information.
var queryArchive = objectRetrieveQueryAddress;
queryArchive += "/FindInstances";
var getStackRequest = new XMLHttpRequest();
getStackRequest.onreadystatechange = function (data) {
if (this.readyState == 4 && this.status == 200) {
var json = JSON.parse(this.responseText);
var instanceIndex = 0;
// if instance count is zero, then the study doesn't exist on the server.
var instanceCount = json.length;
// add frames based on the size of the number of instances.
for (instanceIndex = 0; instanceIndex < instanceCount; instanceIndex++) {
var cellFrame = new lt.Controls.Medical.Frame(cell);
cell.get_frames().add(cellFrame);
}
// loop through every frame, and prepare the data.
for (instanceIndex = 0; instanceIndex < instanceCount; instanceIndex++) {
cellFrame = cell.get_frames().get_item(instanceIndex);
var pageInfo = json[instanceIndex].Pages[0];
cellFrame.imagePosition = pageInfo.ImagePositionPatientArray;
cellFrame.imageOrientation = pageInfo.ImageOrientationPatientArray;
if (pageInfo.PixelSpacingPatientArray != null && pageInfo.PixelSpacingPatientArray.length == 2) {
cellFrame.set_rowSpacing(parseFloat(pageInfo.PixelSpacingPatientArray[1]));
cellFrame.set_columnSpacing(parseFloat(pageInfo.PixelSpacingPatientArray[0]));
}
// now, this is the MRTI info that contains the image information, width, height, tiles....etc.
var mrtiInfo = new lt.Controls.Medical.MRTIImage();
// The image dpi.
mrtiInfo.fullDpi = lt.LeadSizeD.create(150, 150);
// the tile size, recommended value is 256
mrtiInfo.tileSize = lt.LeadSizeD.create(512, 512);
mrtiInfo.frameIndex = 0;
// does this image support window leve.
mrtiInfo.supportWindowLevel = true;
// different resolution for the image.
var resolutions = [{ "width": 512, "height": 512 }, { "width": 256, "height": 256 }, { "width": 128, "height": 128 }, { "width": 64, "height": 64 }];
mrtiInfo.resolutions = [];
for (var i = 0; i < resolutions.length; i++) {
mrtiInfo.resolutions[i] = lt.LeadSizeD.create(resolutions[i].width, resolutions[i].height);
}
// the image width and height.
cellFrame.set_width(mrtiInfo.resolutions[0].width);
cellFrame.set_height(mrtiInfo.resolutions[0].height);
// the image full size.
mrtiInfo.fullSize = lt.LeadSizeD.create(cellFrame.get_width(), cellFrame.get_height());
// now we need the image URL,
var imageUri = objectRetrieveAddress;
imageUri += "/GetImageTile?auth=";
imageUri += encodedAuthenticationCode;
// this the image instance UID, change this if you want to retrieve anything else.
imageUri += "&instance=" + json[instanceIndex].SOPInstanceUID;
mrtiInfo.imageUri = imageUri;
// set this info to the cell frame.
cellFrame.mrtiInfo = mrtiInfo;
// now we need to set the information for the image so we can do window level.
var imageInfo = new lt.Controls.Medical.DICOMImageInformation();
// set the image width and height.
imageInfo.width = 512;
imageInfo.height = 512;
// bits per pixel for the image
imageInfo.bitsPerPixel = 16;
// low and high bit.
imageInfo.lowBit = 0;
imageInfo.highBit = 11;
// other information, setting some of them to zero means that the toolkit will try and calculate it by itself, but you can always get those values from the DicomDataSet.
imageInfo.modalityIntercept = -1024;
imageInfo.modalitySlope = 1;
imageInfo.minValue = 0;
imageInfo.maxValue = 0;
imageInfo.windowWidth = 200;
imageInfo.windowCenter = 40;
imageInfo.signed = false;
imageInfo.photometricInterpretation = 'MONOCHROME2';
imageInfo.firstStoredPixelValueMapped = 0;
// set these information to the frame.
cellFrame.set_information(imageInfo);
}
// scroll to the middle of the series.
cell.currentOffset = instanceCount >> 1;
}
};
getStackRequest.open("POST", queryArchive, true);
getStackRequest.setRequestHeader('Content-Type', 'application/json; charset=UTF-8');
var queryParams = {
"PatientsOptions": {},
"StudiesOptions": {},
"SeriesOptions": { "SeriesInstanceUID": seriesInstanceUID }
};
var findInstanceData = {
authenticationCookie: encodedAuthenticationCode,
options: queryParams,
extraOptions: { UserData2: "" }
};
getStackRequest.send(JSON.stringify(findInstanceData));
}
};
// We are trying here to get an image from the Leadtools database, we need to login and get the authentication code.
xhttp.open("POST", "https://medicaldemos.leadtools.com/MedicalViewerServiceAsp22/api/auth/AuthenticateUser", true);
xhttp.setRequestHeader('Content-Type', 'application/json; charset=UTF-8');
// we log in as a 'guest', after calling the below line, we will receive the authentication code sent via 'onreadystatechange' above.
xhttp.send(JSON.stringify({ userName: 'guest', password: 'guest', userData: '' }));
var exampleButton = document.getElementById("exampleButton");
exampleButton.addEventListener("click", function () {
_this.timesClicked++;
// Run the example
if (callback)
callback(_this.medicalViewer, _this.authenticationCode);
});
}
}
Help Collections
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Medical .NET | C API | C++ Class Library | HTML5 JavaScript
Medical Web Viewer .NET
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Imaging, Medical, and Document
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