dicomfile.java

客户端浏览医学图像的jsp源代码。可用于临床工作站。

              Part10vr = false;
            }else if(TransferSyntax.matches("1.2.840.10008.1.2.2\\p{ASCII}??")){
              if (debug_level > 3) System.out.println("Explicit VR Big Endian");
              Part10Endian = false;
              Part10vr = true;
            }else{
              if (debug_level > 3) System.out.println("Explicit VR Big Endian:");
              Part10Endian = true;
              Part10vr = true;
            }
          }
            
        }
        if(!dicomPart10 && tag.equals("(0000,0000)") && length == 0){
          //僾儕僼傿僋僗暥傪撉傒旘偽偟丄0002僞僌偺帪柧帵揑VRLtlEndian偵偡傞
            din.skip(124);      //128+4偐傜1夞撉傒崬傫偩暘傪堷偔
          if (debug_level > 3) System.out.println("skip");
          isLtlEndian = true;
          vrType = true;
          dicomPart10 = Part10flag = true;
          if (debug_level > 3) System.out.println("part10 ");
        }
        //抣弌椡
        if (debug_level > 5){
          StringBuffer buffer=new StringBuffer();
          for(int i=0; i<dicomData.getValue(tag).length; i++){
            String tmp=Integer.toHexString(dicomData.getValue(tag)[i] & 0xff);
            if(tmp.length()==1){buffer.append('0').append(tmp);
            }else{
              buffer.append(tmp);
            }
          }
          System.out.println("Value = " + buffer);
        }
        
        
      } // while 偙偙傑偱丅

      //DicomPart10梡flag夝彍
      if(dicomPart10){
        Part10flag = dicomPart10 = false;
        isLtlEndian = Part10Endian2;
        vrType = Part10vr2;
      }
      
      din.close();
      inS.close();
    }
    catch(EOFException eof){
      System.out.println("DicomFile.EOFException: " + eof.getMessage() );
    }
    catch(IOException ioe){
      System.out.println("DicomFile.IOException: " + ioe.getMessage() );
    }
    catch(Exception e){
      System.out.println("DicomFile.Exception: " + e.getMessage() );
    }
    
    // 僾儔僀僶僔乕懳嶔偺僐乕僪
    // (0010,0010)偺僨乕僞傪
    //     Takahiro Katoji -> T*k*h*r* *a*o*i
    // 偺傛偆側乽*乿崿偠傝偺暥帤楍偵曄姺偡傞
    if(patientPrivacy) {
      String patientName;
      // 尰嵼DicomData偵僙僢僩偝傟偰偄傞姵幰柤傪庢摼偡傞
      patientName = dicomData.getAnalyzedValue("(0010,0010)");
      StringBuffer patientBuf = new StringBuffer(patientName);
      
      // 姵幰柤偺婏悢斣栚偺暥帤傪乽*乿偵曄姺偡傞
      for(int i=0; i < patientName.length(); i++) {
        if(i % 2 == 1) patientBuf.setCharAt(i, '*');
      }
      
      // 曄姺屻偺暥帤楍傪DicomData偵栠偡
      dicomData.setAnalyzedValue("(0010,0010)", patientBuf.toString());
    }
    
    // DicomData傪曉偟偰廔椆
    return dicomData;
  }

  // 2bytes撉傫偱Int偵曄姺
  private int readInt2(byte[] argtmp){
    int tmp;
    if(isLtlEndian) {
      tmp = ((0x000000ff & argtmp[1]) << 8 | (0x000000ff & argtmp[0]));
    } else {
      tmp = ((0x000000ff & argtmp[0]) << 8 | (0x000000ff & argtmp[1]));
    }
    return tmp;
  }

  // 4bytes撉傫偱Int偵曄姺
  private int readInt4(byte[] argtmp){
    int tmp;
    if(isLtlEndian) {
      tmp = ((0x000000ff & argtmp[3]) << 24 | (0x000000ff & argtmp[2]) << 16
           | (0x000000ff & argtmp[1]) << 8  | (0x000000ff & argtmp[0]));
    } else {
      tmp = ((0x000000ff & argtmp[0]) << 24 | (0x000000ff & argtmp[1]) << 16
           | (0x000000ff & argtmp[2]) << 8  | (0x000000ff & argtmp[3]));
    }
    return tmp;
  }

  // VR傪夝愅偟僨乕僞梫慺偺抣傪揔愗側彂幃偵曄姺偡傞丅
  private void analyzer(String currentTag, String currentVR) {
	
    if(currentVR==null){
      // VR偑柍偄応崌
      dicomData.setAnalyzedValue(currentTag, "Not contain VR.");
    }
    else if(dicomData.getValueLength(currentTag)==0){
      // 戝偒偝0偼柍帇
      dicomData.setAnalyzedValue(currentTag, "");
    }
    else if(currentVR.equals("PN") | currentVR.equals("LO")
          |	currentVR.equals("SH") | currentVR.equals("LT")
          |	currentVR.equals("ST") | currentVR.equals("UI")
          |	currentVR.equals("DS") | currentVR.equals("CS")
          |	currentVR.equals("IS") | currentVR.equals("AS")){
      // 晛捠偺暥帤楍
      for(int j=0; j<dicomData.getValueLength(currentTag); j++)
        if((dicomData.getValue(currentTag))[j] == 0)
           (dicomData.getValue(currentTag))[j] = 20;
      dicomData.setAnalyzedValue(currentTag, new String(dicomData.getValue(currentTag)));

    }
    else if(currentVR.equals("SS")){
      int tmp;
      // 16bit晞崌晅2恑悢
      if(isLtlEndian){
        tmp = (((int)(dicomData.getValue(currentTag))[1] & 0x000000ff) << 8)
             | ((int)(dicomData.getValue(currentTag))[0] & 0x000000ff);
      } else {
        tmp = (((int)(dicomData.getValue(currentTag))[0] & 0x000000ff) << 8)
             | ((int)(dicomData.getValue(currentTag))[1] & 0x000000ff);
      }
      if((tmp & 0x00008000)==0x00008000) 	// 晞崌張棟
				  tmp |= 0xffff0000;
      dicomData.setAnalyzedValue(currentTag, Integer.toString(tmp));

    }
    else if(currentVR.equals("US")){
      int tmp;
      // 16bit晞崌柍2恑悢
      if(isLtlEndian){
        tmp = (((int)(dicomData.getValue(currentTag))[1] & 0x000000ff) << 8)
             | ((int)(dicomData.getValue(currentTag))[0] & 0x000000ff);
      } else {
        tmp = (((int)(dicomData.getValue(currentTag))[0] & 0x000000ff) << 8)
             | ((int)(dicomData.getValue(currentTag))[1] & 0x000000ff);
      }
      dicomData.setAnalyzedValue(currentTag, Integer.toString(tmp));
    }
    else if(currentVR.equals("UL")){
      int tmp;
      // 32bit晞崌柍2恑悢
      if (isLtlEndian){
        tmp = (((int)(dicomData.getValue(currentTag))[3] & 0x000000ff) << 24)
            | (((int)(dicomData.getValue(currentTag))[2] & 0x000000ff) << 16)
            | (((int)(dicomData.getValue(currentTag))[1] & 0x000000ff) <<  8)
            |  ((int)(dicomData.getValue(currentTag))[0] & 0x000000ff);
      } else {
        tmp = (((int)(dicomData.getValue(currentTag))[0] & 0x000000ff) << 24)
            | (((int)(dicomData.getValue(currentTag))[1] & 0x000000ff) << 16)
            | (((int)(dicomData.getValue(currentTag))[2] & 0x000000ff) <<  8)
            |  ((int)(dicomData.getValue(currentTag))[3] & 0x000000ff);
      }
      dicomData.setAnalyzedValue(currentTag, Integer.toString(tmp));

    }
    else if(currentVR.equals("TM")){
      // 帪娫 hh:mm:ss.frac
      dicomData.setAnalyzedValue(currentTag, new String(dicomData.getValue(currentTag)));
      StringBuffer buffer = new StringBuffer(dicomData.getAnalyzedValue(currentTag));
      buffer.insert(2, ":");
      buffer.insert(5, ":");
      dicomData.setAnalyzedValue(currentTag, buffer.toString());
    }
    else if(currentVR.equals("DA")){
      // 擔晅 yyyy.mm.dd
      dicomData.setAnalyzedValue(currentTag, new String(dicomData.getValue(currentTag)));

      // 8bytes偟偐側偄偲偒偼,乽-乿傪捛壛偡傞
      if(dicomData.getValueLength(currentTag)==8){
        StringBuffer buffer = new StringBuffer(dicomData.getAnalyzedValue(currentTag));
        buffer.insert(4, "-");
        buffer.insert(7, "-");
        dicomData.setAnalyzedValue(currentTag, buffer.toString());
      }else if(dicomData.getValueLength(currentTag) == 10){
        // 10bytes偺偲偒偼,乽.乿乽-乿偵曄峏偡傞
        StringTokenizer st = new StringTokenizer(dicomData.getAnalyzedValue(currentTag), ".");
        String temp  = st.nextToken();
        temp += "-" + st.nextToken();
        temp += "-" + st.nextToken();
        dicomData.setAnalyzedValue(currentTag, temp);
      }
    }
    else
      // 僒億乕僩偟偰偄側偄僞僌
      dicomData.setAnalyzedValue(currentTag, "Unknown VR");
    // 僨僶僢僌梡
    if (debug_level > 3) System.out.println("AnalyzedValue :" + dicomData.getAnalyzedValue(currentTag));
  }
}