Docstoc

PANCREATIC CYSTS

Document Sample
PANCREATIC CYSTS Powered By Docstoc
					    CLASSIFICATION OF
    PANCREATIC CYSTS



1         7/6/2010
    Overview
       Introduction
       Signs and symptoms
       Diagnosis
       Pancreatic cysts
       Edge detection
       Thresholding
       Conclusion
       References

2                        7/6/2010
                 OBJECTIVE

    Classification of Pancreatic cysts using
    Image Processing techniques.




3                     7/6/2010
                    INTRODUCTION
       What is a cyst?
        A cyst is a closed sac having a distinct membrane and
        division on the nearby tissue. They may contain air,
        fluids, or semi-solid material.

       Pancreas is a large gland that produces digestive
        enzymes and hormones.
       Pancreas can become home to many types of cystic
        growths, some cancerous and some benign.
       Appropriate treatment differs depending on the type of
        cyst and whether it causes symptoms.

4                               7/6/2010
    Signs and Symptoms
     Persistent abdominal pain
     A mass in the upper abdomen

     Nausea and vomiting

     Fainting




5                     7/6/2010
    Diagnosis
     Computer tomography
     Ultrasound scanning

     Magnetic resonance imaging




6                     7/6/2010
    Pancreatic cysts
    Classification
     Serous cyst

     Mucinous cyst

     Pseudocyst

     Intraductal papilliary mucinous neoplasms




7                      7/6/2010
             IMAGE PROCESSING
                TECHNIQUES
       Edge detection

       Thresholding

       Segmentation



8                        7/6/2010
          EDGE DETECTION
SEROUS CYST-1


           A1
                           edge1




9               7/6/2010
 Contd…
 SEROUS CYST-2




10               7/6/2010
                   Contd..
 MUCINOUS CYST-1




11                  7/6/2010
 Contd…
MUCINOUS CYST-2




12                7/6/2010
            THRESHOLDING
SEROUS CYST-1




13              7/6/2010
                   Contd…

 MUCINOUS CYST-1




14                  7/6/2010
 Contd…
MUCINOUS CYST-2




15                7/6/2010
                   CONCLUSION

     Image processing techniques such as edge
      detection and thresholding are used to classify
      the images of Pancreatic cysts


     Thresholding was found to be more effective
      than edge detection in classification


16                            7/6/2010
 References
 [1] Cystic Neoplasms of pancreas –william R. Brugge, MD
     Gregory Y. Lauers-N Engl J Med 2004, 351:1218-122

 [2] Digital Image Processing-Rafael C. Gonzalez

 [3] Pancreatic cyst-MayoClinic.com

 [4] Pancreas, Serous Cystadenoma-www.emedicine.com,
     July 17,2007

 [5] MATLAB 7.0 Image Processing Toolbox



17                              7/6/2010
             SEROUS CYST
    Can be located in head, tail or body of
     pancreas.
    Usually composed of small thin walled
     cysts.
    They have clear cytoplasm.
     Plain CT shows honeycomb pattern of
     microlacunae with thin septae separating
     different segments.
                                Back
18                   7/6/2010
           MUCINOUS CYST
  Usually located in body or tail of pancreas.
  Filled with tenacious fluid.

  Cysts are thick walled .

  CT usually demonstrate well demarcated
   thick walled cystic mass.


                                    Back

19                   7/6/2010

				
DOCUMENT INFO
Description: What is a cyst? A cyst is a closed sac having a distinct membrane and division on the nearby tissue. They may contain air, fluids, or semi-solid material. Pancreas is a large gland that produces digestive enzymes and hormones. Pancreas can become home to many types of cystic growths, some cancerous and some benign. Appropriate treatment differs depending on the type of cyst and whether it causes symptoms.