dcm4che解析DICOM文件生成JPEG圖像

dcm4che概述

dcm4che是爲專注於醫療健康企業開發的基於DICOM標準的開源應用和工具的集合。目前最新的版本是dcm4che3.3.8。本片文章主要講的是使用dcm4che3.3.8解析DICOM文件生成JPEG圖像文件。

運行環境

java：jre1.8.0_131，jdk1.8.0_131;

注：使用的是32位java運行環境，因爲之前使用的是64位，然後生成JPEG時出現不能生成等錯誤（具體錯誤記不清楚了），需要使用32位環境然後安裝一些java的其他的環境。

jar包

dcm4che3.3.8：
- dcm4che-image-3.3.8.jar
- dcm4che-imageio-3.3.8.jar
- dcm4che-tool-dcm2jpg-3.3.8.jar
- dcm4che-core-3.3.8.jar
log4j：
- log4j-1.2.17.jar
- slf4j-api-1.7.5.jar
- slf4j-log4j12-1.7.5.jar

具體實現

主要由兩個.java構成，Dcm2jpgIOStreamOutput.java和Dcm2JpgMain.java。
Dcm2jpgIOStreamOutput.java：

import java.awt.image.BufferedImage;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Iterator;

import javax.imageio.ImageIO;
import javax.imageio.ImageReadParam;
import javax.imageio.ImageReader;
import javax.imageio.stream.ImageInputStream;

import org.dcm4che3.data.Attributes;
import org.dcm4che3.imageio.plugins.dcm.DicomImageReadParam;
import org.dcm4che3.util.SafeClose;

import com.sun.image.codec.jpeg.JPEGCodec;
import com.sun.image.codec.jpeg.JPEGImageEncoder;

public class Dcm2jpgIOStreamOutput {
    private final ImageReader imageReader = ImageIO.getImageReadersByFormatName("DICOM").next();
    private float windowCenter;
    private float windowWidth;
    private boolean autoWindowing = true;
    private int windowIndex;
    private int voiLUTIndex;
    private boolean preferWindow = true;
    private Attributes prState;
    private int overlayActivationMask = 0xffff;
    private int overlayGrayscaleValue = 0xffff;
    private int frame = 1;  
    public int getFrame() {
        return frame;
    }

    public void setFrame(int frame) {
        this.frame = frame;
    }

    public void setWindowCenter(float windowCenter) {
        this.windowCenter = windowCenter;
    }

    public void setWindowWidth(float windowWidth) {
        this.windowWidth = windowWidth;
    }

    public void setAutoWindowing(boolean autoWindowing) {
        this.autoWindowing = autoWindowing;
    }

    public void setWindowIndex(int windowIndex) {
        this.windowIndex = windowIndex;
    }

    public void setVoiLUTIndex(int voiLUTIndex) {
        this.voiLUTIndex = voiLUTIndex;
    }

    public void setPreferWindow(boolean preferWindow) {
        this.preferWindow = preferWindow;
    }

    public void setPrState(Attributes prState) {
        this.prState = prState;
    }

    public void setOverlayActivationMask(int overlayActivationMask) {
        this.overlayActivationMask = overlayActivationMask;
    }

    public void setOverlayGrayscaleValue(int overlayGrayscaleValue) {
        this.overlayGrayscaleValue = overlayGrayscaleValue;
    }

    public void convert(File src, File dest) throws IOException{
        Iterator<ImageReader> iter = ImageIO.getImageReadersByFormatName("DICOM");
        ImageReader reader = iter.next();      
        ImageInputStream iis = ImageIO.createImageInputStream(src);
        BufferedImage bi;
        OutputStream out = null;
        try{
            reader.setInput(iis, false);
            bi = readImage(iis);
            if (bi == null) {
                System.out.println("\nError: " + src + " - couldn't read!");
                return;
            }
            out = new BufferedOutputStream(new FileOutputStream(dest));
            JPEGImageEncoder enc = JPEGCodec.createJPEGEncoder(out);  //這裏也可以使用流將圖像導出到web應用，用來搭建web版的PACS等。
            enc.encode(bi); 
        }finally{
            SafeClose.close(iis);
            SafeClose.close(out);
        }
    }

    private ImageReadParam readParam(){
        DicomImageReadParam param = (DicomImageReadParam) imageReader.getDefaultReadParam();
        param.setWindowCenter(windowCenter);
        param.setWindowWidth(windowWidth);
        param.setAutoWindowing(autoWindowing);
        param.setWindowIndex(windowIndex);
        param.setVOILUTIndex(voiLUTIndex);
        param.setPreferWindow(preferWindow);
        param.setPresentationState(prState);
        param.setOverlayActivationMask(overlayActivationMask);
        param.setOverlayGrayscaleValue(overlayGrayscaleValue); 
        return param;
    }

    private BufferedImage readImage(ImageInputStream iis) throws IOException{
        imageReader.setInput(iis);
        return imageReader.read(frame -1, readParam());
    }
}

Dcm2JpgMain.java：

import java.io.File;
import java.io.IOException;

public class Dcm2JpgMain {
    public static void main(String[] args) throws IOException {
        try{
            for(int i = 1;i < 2;i++){
                System.out.print("No: " + String.format("%06d", i) + "   Started  ");
                String tempStr = String.format("%06d", i);
                File src = new File("F:\\dicomfiles\\LIDC-IDRI-0827\\1.3.6.1.4.1.14519.5.2.1.6279.6001.728284743932342406301468721019\\1.3.6.1.4.1.14519.5.2.1.6279.6001.253322967203074795232627653819\\" + tempStr + ".dcm"); //這裏我原本測試的是大概400個dcm文件，最後一次測試只實驗了一張，這裏填上dcm文件的具體位置就行。
                File dest = new File("F:\\dicomfiles\\dcm2jpg\\" + tempStr + ".jpg");  //生成的JPEG圖像位置         
                Dcm2jpgIOStreamOutput dcm2jpg = new Dcm2jpgIOStreamOutput();          
                dcm2jpg.convert(src, dest);         
                System.out.println("------>   Result:Completed");
            }
        }catch(IOException e){ 
            e.printStackTrace();

        }catch(Exception e){
            e.printStackTrace();
        }
    }
}

Q： 690567521