Brain Volume Placement
Brain Volume Placement - Related Videos
06:57
Arterial Line Placement
0 Views •
2023
Source: Sharon Bord, MD, Department of Emergency Medicine, The Johns Hopkins University School of Medicine, Maryland, USA When monitoring patients, it is important to obtain values that are accurate and reliable. Blood pressure monitoring is one of the essential vital signs, and for a majority of patients, measuring it utilizing non-invasive techniques provides accurate values. However, there are situations in which the blood pressure requires more exact, specific, and reliable measurements.
09:51
Intraosseous Needle Placement
0 Views •
2023
Source: Julianna Jung, MD, FACEP, Associate Professor of Emergency Medicine, The Johns Hopkins University School of Medicine, Maryland, USA For unstable patients requiring urgent administration of medications, fluids, or blood products, establishing vascular access quickly is essential. However, there are many factors that can complicate placement of a peripheral intravenous cannula (PIV), and it is extremely common for PIV attempts to fail. PIV placement may be technically challenging in small...
10:45
Real-time Iontophoresis with Tetramethylammonium to Quantify Volume Fraction and Tortuosity of Brain Extracellular Space
0 Views •
Cited by 29 •
2017
This protocol describes real-time iontophoresis, a method that measures physical parameters of the extracellular space (ECS) of living brains. The diffusion of an inert molecule released into the ECS is used to calculate the ECS volume fraction and tortuosity. It is ideal for studying acute reversible changes to brain ECS.
09:15
Measuring Pressure Volume Loops in the Mouse
0 Views •
Cited by 16 •
2016
This manuscript describes a detailed protocol for the collection of pressure-volume data from the mouse.
02:41
Constant Volume Calorimetry
0 Views •
2020
Calorimeters are useful to determine the heat released or absorbed by a chemical reaction. Coffee cup calorimeters are designed to operate at constant (atmospheric) pressure and are convenient to measure heat flow (or enthalpy change) accompanying processes that occur in solution at constant pressure. A different type of calorimeter that operates at constant volume, colloquially known as a bomb calorimeter, is used to measure the energy produced by reactions that yield large amounts of heat and...
FAQs
Anatomical landmarks provide recognizable reference points, while stereotaxic coordinates express a target’s position within experimental space. Together, they help translate a defined brain region into a location that can be approached consistently. This spatial framework is especially important when researchers need to return to comparable sites for measurements, tissue sampling, neural stimulation, or drug delivery.
Image registration aligns magnetic resonance images or other anatomical representations with a standardized brain atlas or subject-specific anatomy. The alignment helps researchers relate an experimental target to surrounding structures and compare locations across subjects or experiments. Its value is greatest when regional anatomy varies, because registration supports more consistent interpretation of measurements and structural or functional changes.
Atlas-based placement relates a target to a standardized anatomical reference, supporting comparisons across experiments. Subject-specific placement instead uses an individual’s anatomy, often represented through magnetic resonance images, to account for differences in structure. The two approaches address the same localization problem from different reference frames, influencing how researchers interpret regional measurements and reproduce experimental targeting.
A placement workflow can draw on anatomical landmarks, stereotaxic coordinates, magnetic resonance images, and an appropriate brain atlas or subject-specific anatomical representation. These sources establish reference points and spatial relationships for the target volume. Selecting and aligning the relevant information allows researchers to document where a region lies and supports consistent downstream sampling, stimulation, delivery, or analysis.
Researchers apply this spatial approach when they need to measure a defined region, collect tissue from a selected site, stimulate neural tissue, or deliver a drug to a targeted location. It also supports analysis of structural and functional changes. By tying each intervention or measurement to a brain volume, the method helps connect regional anatomy with experimental outcomes.
Accurate regional localization allows investigators to relate anatomical areas to behavior, disease mechanisms, and treatment effects. When the same brain volume can be identified across experiments or subjects, regional findings become easier to compare and interpret. This spatial precision therefore strengthens reproducibility while helping researchers examine how localized structural or functional changes relate to broader neuroscience questions.