Structural Scan Success
Structural Scan Success - Related Videos
02:17
Ecological Succession
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2026
Ecological succession is influenced by the processes of facilitation, inhibition, and toleration. Facilitation occurs when early successional species create more favorable ecological conditions for subsequent species, such as enhanced nutrient, water, or light availability. In contrast, inhibition happens when early successional species create unfavorable ecological conditions for potential successive species, such as limiting resource availability. In some cases, later successional species...
05:05
The Successive Alleys Test of Anxiety in Mice and Rats
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Cited by 49 •
2013
The plus-maze measures anxiety-like behaviour in rodents. There are two opposite closed and two opposite open arms; anxious rodents avoid the open arms. The central area is neither completely open nor closed, so time spent here is ambiguous and difficult to interpret. Here a modification of the plus-maze protocol eliminating this area is described.
02:28
Leaky Scanning
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2020
During most eukaryotic translation processes, the small 40S ribosome subunit scans an mRNA from its 5' end until it encounters the first start AUG codon. The large 60S ribosomal subunit then joins the smaller one to initiate protein synthesis. The location of the translation initiation is largely determined by the nucleotides near the start codon as there may be multiple translation initiation sites present on the mRNA. Marilyn Kozak discovered that the sequence RCCAUGG (where R stands for...
10:28
Probing the Structure and Dynamics of Interfacial Water with Scanning Tunneling Microscopy and Spectroscopy
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Cited by 2 •
2018
Here, we present a protocol to investigate the structure and dynamics of interfacial water at the atomic scale, in terms of submolecular resolution imaging, molecular manipulation, and single-bond vibrational spectroscopy.
11:41
Scanning Electron Microscopy (SEM)
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2023
Source: Laboratory of Dr. Andrew J. Steckl — University of Cincinnati A scanning electron microscope, or SEM, is a powerful microscope that uses electrons to form an image. It allows for imaging of conductive samples at magnifications that cannot be achieved using traditional microscopes. Modern light microscopes can achieve a magnification of ~1,000X, while typical SEM can reach magnifications of more than 30,000X. Because the SEM doesn’t use light to create images, the resulting pictures it...
FAQs
MRI tissue contrast depends on how hydrogen nuclei respond after radiofrequency excitation. The static magnetic field first aligns these nuclei, then the pulse changes that alignment. As the nuclei relax, tissues produce different signal patterns. Those differences allow structural scans to separate anatomical regions and represent tissue boundaries, making relaxation behavior central to preserving measurable brain anatomy.
Positioning, sequence selection, and motion control influence whether anatomical detail remains reliable. Positioning helps maintain a consistent view of the brain, while sequence choice determines which tissue-related signal differences are emphasized. Motion can blur or distort those details. Managing these factors is important when scans will be compared across participants or used for quantitative measurements.
Quality assessment does more than identify visually poor images; it supports confidence in measurements derived from them. Standardized acquisition and review reduce unwanted variation between participants, scanners, and studies. This consistency makes differences in cortical thickness or brain volume more interpretable, because observed variation is less likely to reflect inconsistent scanning conditions rather than genuine anatomical differences.
Begin with careful positioning, select an imaging sequence suited to the anatomical information required, and control movement during scanning. After acquisition, assess whether the images preserve usable detail before extracting measurements. This workflow links preparation, signal generation, and quality review rather than treating image analysis as separate from data collection, helping protect the reliability of anatomical results.
High-quality structural images can support measurements of cortical thickness, overall brain volume, and lesion location. They can also reveal developmental or disease-related changes in anatomy when acquisition and assessment are sufficiently consistent. These outputs convert image quality into research variables, allowing investigators to examine how structural differences relate to brain function and behavior.
Brain structure is often interpreted alongside function and behavior, so unreliable anatomical measurements can weaken those relationships. Consistent scans provide a stronger basis for comparing individuals and tracking developmental or disease-related changes. The same quality principles therefore support both neuroscience research conclusions and clinical assessment of anatomical findings, where accurate lesion location or structural characterization may be important.