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Code
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Display
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Definition
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126032
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Metabolic Volume |
The volume of a lesion (e.g., a tumor) ascertained through information about its metabolic activity (e.g., SUV on PET).Abbreviated "MV". Synonymous with Metabolic Tumor Volume (MTV). |
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126033
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Total Lesion Glycolysis |
The total activity of a lesion obtained as the product of its volume and its glycolytic activity (on FDG-PET).The volume may be defined on the same modality (e.g., the MV on FDG-PET by some thresholding or other technique) or on another spatially registered modality (e.g., the lesion outline segmented on CT or MR).Does not apply to other radiopharmaceuticals than those involved in glucose metabolism.Abbreviated TLG. Synonymnous with "Tumor Lesion Glycolysis". |
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126034
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Glycolysis |
The amount glycolytic activity summed across all voxels in a defined region or within a defined range of SUV (on FDG-PET). |
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126035
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Total Lesion Proliferation |
The total activity of a lesion obtained as the product of its volume and its proliferative activity (on FLT-PET).The volume may be defined on the same modality (e.g., the MV on FDG-PET by some thresholding or other technique) or on another spatially registered modality (e.g., the lesion outline segmented on CT or MR).Does not apply to other radiopharmaceuticals than those involved in cellular proliferation.Abbreviated TLP. Synonymnous with "Tumor Lesion Proliferation". |
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126036
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Proliferative Activity |
The amount proliferative activity summed across all voxels in a defined region or within a defined range of SUV (on FLT-PET). |
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126037
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Standardized Added Metabolic Activity |
A background-corrected, partial volume independent version of TLG.SAM is calculated by drawing a volume of interest (VOI1) around the tumour and a larger VOI (VOI2) around VOI1. Subtracting the background activity in VOI2-VOI1 from VOI1 yields SAM.See Mertens et al. "Standardized added metabolic activity (SAM): a partial volume independent marker of total lesion glycolysis in liver metastases". Eur J Nucl Med Mol Imaging (2012) 39:1441-1448. |
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126038
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Standardized Added Metabolic Activity Background |
The background value (VOI2-VOI1) used to calculate Standardized Added Metabolic Activity (SAM).SAM is calculated by drawing a volume of interest (VOI1) around the tumour and a larger VOI (VOI2) around VOI1. Subtracting the background activity in VOI2-VOI1 from VOI1 yields SAM.See Mertens et al. "Standardized added metabolic activity (SAM): a partial volume independent marker of total lesion glycolysis in liver metastases". Eur J Nucl Med Mol Imaging (2012) 39:1441-1448. |
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126039
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Lesion to Background SUV Ratio |
The ratio of the SUV within a tumor to the SUV of a pre-defined background region.A more general concept than Tumor to Background Ratio (TBR). |
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126040
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Background for Lesion to Background SUV Ratio |
The SUV of a pre-defined background region used to compute Lesion to Background SUV Ratio. |