EXTRACTING ARTERIAL BLOOD CURVE FROM PET IMAGE - UPDATE

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EXTRACTING ARTERIAL BLOOD CURVE FROM PET IMAGE -
UPDATE

• Abdominal aorta in 15OH2O studies

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Improved method

• Method contains
• 95 thresholding
• Recovery coefficient
• User has to specify the range of planes
• Initial value for diameter is not needed

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Thresholding

• For each frame
• Find the pixel with maximum activity (inside the
  vessel)
• Include all pixels where activity value is
  greater than 0.95maximum activity
  (thresholding)
• Calculate mean
• gt thresholded TAC

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Recovery coefficient

• Estimate diameter of the vessel
• Calculate the recovery coefficient

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Resulting input TAC

• RC thresholded TAC

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Diameter estimates (mm)
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Result TACs
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AUC correlations
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Future plans

• Article dealing with input extraction
• Validation of diameter estimates with help of
  ultrasound results
• Comparisons with ICA