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KMID : 1151820160100050299
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Journal of the Korean Society of Radiology
2016 Volume.10 No. 5 p.299 ~ p.305
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Usefulness of Scan Position Change on Dual Time Point PET-CT in Pancreas Cancer
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Chang Bo-Seok
Kim Jae-Ho
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Abstract
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Despite of the development of medical equipments and technology. Pancreatic cancer has maked high false positive rate and low survival rate compared to other cancers. Therefore, early catch of pancreatic cancer is the only way to enhance the viability. It is important to find the exact location of the pancreas cancer in early stage. The method of optimum scan for early detection of pancreatic cancer on PET/CT exam is proposed. Examined the anatomical region that potentially can be missing from the supine position of ordinary pet/ct exam. The characteristics and usefulness of angle variation (0, 30°, 45°, 60°, 90°) of patients scan position is analyzed. The proposed scan method (named JJ-projection) is bringing advantage of anatomical discrimination by separating stomach, liver, gallbladder duodenum and pancreas. ROC curve analysis is shows to advantage of the JJ-Projection method. The sensitivity has increased 4.6% than the supine delay scan method, the results sensitivity has increased from 91% to 95.2%. The specificity has increased from 75.1% to 84%. Compared with the results observed in cancer by biological biopsy, The accuracy has increased from 86.8% to 94.1%.
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KEYWORD
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PET/CT, JJ-Projection, Pancreatic cancer, Scan method
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