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  • Standardized Uptake Value (SUV)

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Table of Contents
The standardized uptake value (SUV) formulas are used in positron emission tomography (PET) analysis. Radiotracer concentration can be measured for any area-based region of interest (ROI) such as circle, square, polygon, etc. The SUV formulas depend on certain attributes in the DICOM image without which SUV values cannot be calculated.

This application provides the following SUV types

  • SUV Body Weight (SUV bw)

  • SUV Lean Body Mass (SUV lbm)

  • SUV Body Surface Area (SUV bsa)

Note
N/A will be displayed in the event that SUV calculations are not available (e.g. due to missing DICOM attributes).

Required DICOM Attributes

  • General Tags
TagVRVMDescription
(0010,0040)CS1Patient’s Sex
(0010,1020)DS1Patient’s Size
(0010,1030)DS1Patient’s Weight
(0008,0021)DA1Series Date
(0008,0031)TM1Series Time
(0008,0022)DA1Acquisition Date
(0008,0032)TM1Acquisition Time
(0028,0051)CS1 - nCorrected Image
(0054,1102)CS1Decay Correction
(0054,1001)CS1Units
(0028,1052)DS1Rescale Intercept
(0028,1053)DS1Rescale Slope
  • Radiopharmaceutical Information Sequence
TagTagVRVMDescription
(0054,0016)
SQ1Radiopharmaceutical Information Sequence

(0018,1074)DS1Radionuclide Total Dose

(0018,1078)DT1Radiopharmaceutical Start DateTime

(0018,1072)TM1Radiopharmaceutical Start Time

(0018,1075)DS1Radionuclide Half Life
  • Manufacturer Tags
TagVRVMDescription
(0009,100D)TM1Scan Time for GE (private tag)
(7053,1000)DS1SUV Scale Factor for Philips
(7053,1009)DS1Activity Concentration Scale Factor for Philips

SUV formulas

  1. Main Formulas

    • Body Weight (SUV bw)
      Image Removed
      [1]
      Image Added
    • Body Surface Area (SUV bsa)
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      [1]
      Image Added
      with calibration factor = (mCi/ml)/(counts/pixels/sec), and BSA (m2) = (weight in kg)0.425 x (height in cm)0.725 x 0.007184
    • Lean Body Mass (SUV lbm)
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      [2]
    Factors of Formulas
    • SUV lbm=decay-corrected tissue concentration(kilobecquerels/mL)/(injected dose per g of lean body mass)

  2. Factors

    • Body Surface Area (BSA)
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      BSA (m2) = (weight in kg)0.425 x (height in cm)0.725 x 0.007184

    • Lean Body Mass (Male)
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      lbm=1.10(weight in kg) − 120(weight in kg/height in cm)2

    • Lean Body Mass (Female)
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    • Decay Correction
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    • Time Gap
      Scan Time - Radiopharmaceutical Start TimeImage Removed

      If Decay Correction (0054,1102) is 'ADMIN', Time Gap is 0.
      If GE private tag presents, Scan Time is with its value.

    • PET Image Pixels
      Image Removed
      lbm=1.07(weight in kg) − 148(weight in kg/height in cm)2

Spherical ROI Tool

The Spherical ROI tool calculates SUV values based upon multiple slices (3D calculation) by considering all voxels within a sphere centered on the location where the tool is deployed. 

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