Metabolic Volumetric Product
Metabolic Volumetric Product - Related Videos
10:19
An Introduction to Cell Metabolism
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2023
In cells, critical molecules are either built by joining together individual units like amino acids or nucleotides, or broken down into smaller components. Respectively, the reactions responsible for this are referred to as anabolic and catabolic. These reactions require or produce energy typically in the form of a “high-energy” molecule called ATP. Together, these processes make up “Cell Metabolism,” and are hallmarks of healthy, living cells.JoVE’s introduction to cell metabolism briefly...
05:41
Metabolic Profile Analysis of Zebrafish Embryos
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Cited by 42 •
2013
Zebrafish represent a powerful vertebrate model that has been under-utilised for metabolic studies. Here we describe a rapid way to measure the in vivo metabolic profile of developing zebrafish that allows the comparison of different mitochondrial function parameters between genetically or pharmacologically manipulated embryos, thereby increasing the applicability of this organism.
07:28
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Cited by 4 •
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The elucidation of the mode-of-action of a novel antibiotic is a challenging task in the drug discovery process. The goal of the method described here is the application of isothermal microcalorimetry using calScreener in antibacterial profiling to provide additional insight into drug-microbe interactions.
06:26
Quantitative Assessment Protocol for Facial Soft Tissue Volumetric Changes with Stereophotogrammetry
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2025
We present a detailed protocol for three-dimensional analysis of soft tissue changes with the use of stereophotogrammetry.
06:59
Characterization of Metabolic Status in Nonhuman Primates with the Intravenous Glucose Tolerance Test
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Cited by 7 •
2016
The goal of this protocol is to present a standard method to perform intravenous glucose tolerance tests (IVGTTs) to assess glycemic control in nonhuman primates and assess their metabolic status from healthy to dysmetabolic.
FAQs
The multiplication step gives greater weight to lesions or tissues that combine substantial activity with a larger spatial extent. A small region with high activity and a larger region with the same activity may therefore produce different integrated values. This helps distinguish overall metabolically active burden from isolated intensity or size, although interpretation still depends on reliable measurements for both components.
Separate regions may differ in radiotracer uptake, metabolic rate, or volume, so a single intensity value may not represent the entire abnormality. By integrating activity across the measured volume, the metabolic volumetric product can capture differences in the distribution of active tissue. This makes it useful for describing disease patterns that are not uniform throughout a region of interest.
Activity-based measurements describe how metabolically active a region appears, while size-based measurements describe its extent. The combined metric connects these dimensions in one quantitative value, allowing researchers to examine whether changes reflect altered activity, altered volume, or both. It should complement rather than replace the underlying measurements, because the combined result cannot show which component changed without reviewing them separately.
Image acquisition conditions and segmentation methods are central sources of variation. Acquisition must be consistent enough for activity measurements to be comparable, while segmentation determines which tissue belongs to the measured region and how its volume is calculated. Clinically appropriate interpretation is also essential, because an identical numerical value may have different significance in different medical settings.
A typical workflow begins by identifying the relevant tissue or lesion as a region of interest. The investigator then measures the selected activity parameter, such as radiotracer uptake or metabolic rate, determines the corresponding tissue volume, and combines the two values quantitatively. Consistent acquisition and clearly defined segmentation are needed so that results can be compared across examinations or research groups.
The measure can support assessment of disease extent, evaluation of treatment response, and investigation of biological heterogeneity. In longitudinal studies, it may help summarize whether the metabolically active burden changes after therapy, provided imaging and segmentation remain comparable. Its role is especially relevant when both functional activity and anatomical extent matter, but interpretation must remain tied to the clinical context.