Tumor Diameter
Tumor Diameter - Related Videos
11:37
Propeller Characterization: Variations in Pitch, Diameter, and Blade Number on Performance
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Source: Shreyas Narsipur, Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, NC A propeller is a twisted airfoil, where the angle of the chord changes with respect to the location, along the radial station, as shown in Figure 1. Propellers are widely used in aircraft and watercraft propulsion systems thereby necessitating detailed characterizations of propellers to design high performance vehicles. Figure 1. Chord, thickness, and pitch at a radial station. One of...
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Cited by 18 •
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The polysaccharide capsule is the primary virulence factor in Cryptococcus neoformans, and its size correlates with strain virulence. Capsule diameter measurements are used in phenotypic testing and to gauge therapeutic efficacy. Here a standard method of capsule induction is presented, and two methods of staining and measuring diameter are compared.
04:04
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Cited by 2 •
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Mouse retinal vasculature is particularly interesting in understanding the mechanisms of vascular pattern formation. This protocol automatically measures the diameter of mouse retinal vessels from fluorescent angiography fundus images at a fixed distance from the optic disk.
08:42
Establishment of a Co-culture System of Patient-Derived Colorectal Tumor Organoids and Tumor-Infiltrating Lymphocytes (TILs)
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Cited by 4 •
2025
The protocol describes a method for creating a patient-derived colorectal cancer (CRC) organoid model co-cultured with tumor-infiltrating lymphocytes (TILs) to study their interactions and therapeutic potential. This model provides a preclinical platform to explore immune responses in the tumor microenvironment and to predict the efficacy of TIL-based therapy for personalized CRC treatment.
06:09
Femoral Vascular Graft Implantation in a Swine Model to Test Small-Diameter Vascular Grafts
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2025
This study presents a porcine model for evaluating small-diameter grafts in femoral arteries. The model mimics human vascular dynamics and comprehensively assesses graft patency, hemodynamics, and vascular remodeling. It offers a valuable platform for testing vascular grafts and monitoring them with Doppler ultrasound and angiography.
FAQs
Selecting the largest dimension provides a consistent reference for comparing lesions across time, samples, or experimental groups. It reduces ambiguity when tumors have irregular shapes and allows researchers to apply the same reporting convention to baseline and follow-up measurements. This consistency supports interpretation of growth patterns, treatment-related changes, and size-based tumor classification.
Tumor diameter can vary if researchers use different anatomical planes, measurement locations, or physical conditions. Consistent positioning and measurement criteria help ensure that changes reflect the tumor rather than procedural differences. In cancer studies, maintaining the same approach across repeated observations is therefore essential for reliable comparisons between time points, treatment groups, or disease stages.
Tumor diameter offers a relatively simple linear measurement that can be obtained from calipers, images, or pathology specimens, making it practical for repeated assessment. Volume can describe overall burden more completely, but diameter remains useful for standardized size comparisons. Interpreting both measurements can reveal whether apparent changes reflect general growth or differences in tumor shape.
In experimental models, researchers commonly use calipers to obtain measurements directly from the tumor. They apply the same measurement approach at each observation and record the relevant dimension for longitudinal comparison. Repeated values can then be used to follow tumor growth or evaluate whether treated and untreated groups show different size trajectories.
Serial measurements show how tumor size changes after treatment begins, rather than relying on a single observation. Researchers can compare the direction and extent of change across time and between study groups. These trends help assess response or progression, while interpretation alongside imaging features, molecular data, or clinical outcomes provides broader evidence about treatment effects.
Diameter should be combined with tumor volume, imaging features, molecular data, and clinical outcomes when a single linear value cannot capture disease complexity. This broader assessment is particularly important for irregular lesions or when size changes do not fully explain biological behavior. Multidimensional interpretation helps researchers evaluate tumor burden and progression more comprehensively.