Dual Angle Protocol
Dual Angle Protocol - Related Videos
01:13
Contact Angle
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2023
When a solid is dipped inside a liquid, the liquid surface becomes curved near the contact. For some solid–liquid interfaces, the liquid is pulled up along the solid, while for others, the liquid surface is convex or depressed near the solid surface. This phenomenon can be explained using the concept of cohesive and adhesive forces. The adhesive force is the molecular force between molecules of different materials, that is, between the molecules of the solid and the liquid. The cohesive force...
05:13
Trabeculotome Tunneling Trabeculoplasty (3T): A Step-by-Step Surgical Protocol for Primary Open-angle Glaucoma
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2026
This protocol describes Trabeculotome Tunneling Trabeculoplasty (3T)—a minimally invasive glaucoma surgery that includes trabecular incision, Schlemm’s canal (SC) dilation, and tension suture implantation to restore physiological aqueous outflow—accompanied by a noncomparative case series.
01:27
Open Angle Glaucoma: Treatment
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2023
In open-angle glaucoma, the iridocorneal angle remains open, but the trabecular meshwork becomes stiff, slowing down the outflow of aqueous humor. This causes a buildup of aqueous humor in the anterior chamber, leading to a sudden increase in intraocular pressure. The treatment for open-angle glaucoma focuses on reducing the elevated intraocular pressure by either decreasing the secretion of aqueous humor or increasing its outflow. Drugs such as carbonic anhydrase inhibitors, α2- and...
15:10
A Dual Tracer PET-MRI Protocol for the Quantitative Measure of Regional Brain Energy Substrates Uptake in the Rat
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Cited by 2 •
2013
Small-animal positron emission tomography enables the assessment of the brain's two main energy substrates: glucose and ketones. In the present method, 11C-acetoacetate and 18F-fluorodeoxyglucose are injected sequentially in each animal, and their uptake is measured quantitatively in specific brain regions determined from the magnetic resonance images.
01:13
Angle of Twist: Problem Solving
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2024
An electric motor applies a torque of 700 N·m to an aluminum shaft, triggering a stable rotation. Two pulleys, B and C, are subjected to torques of 300 N·m and 400 N·m, respectively. The modulus of rigidity is provided as 25 GPa. With the knowledge of the length and diameter of each segment, the twist angle between the two pulleys can be computed. First, a section cut is made between pulleys B and C, and the cut cross-section is analyzed using a free-body diagram. Given that the torque exerted...
FAQs
Each angle exposes spatial relationships that may be hidden, compressed, or ambiguous from the other view. Comparing the paired observations helps distinguish the apparent position, extent, or orientation of a finding from artifacts of perspective. This added spatial information can support more confident anatomical localization and reduce the chance that a single viewpoint will dominate interpretation.
Standardized positioning makes the two observations more comparable because changes in orientation are controlled rather than introduced accidentally. Consistent acquisition supports meaningful comparison of anatomy or clinical findings across the paired views and between assessments. It also improves reproducibility, allowing clinicians or researchers to determine whether an apparent difference reflects the finding itself rather than inconsistent positioning.
Comparison reveals agreement and discrepancy between perspectives, providing a structured way to resolve uncertainty. When appropriate, the observations can also be combined into a more coherent spatial interpretation rather than treated as unrelated images. This approach is particularly useful when a finding has an unclear location, shape, or relationship to surrounding anatomy in one view.
Interpretive value depends on obtaining genuinely complementary views, maintaining standardized positioning, and comparing the paired observations systematically. If the perspectives do not add distinct spatial information, the second observation may contribute little. Conversely, well-matched views can improve consistency in structural interpretation and clinical measurement, especially when the original single-view assessment leaves meaningful ambiguity.
The workflow begins by selecting a clinical finding or anatomical region for assessment, followed by acquisition of two complementary observations under standardized positioning. The observations are then reviewed side by side to identify corresponding structures and clarify spatial relationships. Finally, the findings may be compared or combined to support localization, characterization, planning, or a more reproducible assessment.
Clinicians may use paired views when a lesion or anatomical feature cannot be adequately localized or interpreted from one perspective. The additional angle can help clarify its position, structural relationships, and apparent extent. These observations can inform anatomical mapping and support procedural planning, particularly when accurate spatial understanding is important for an image-guided decision.
In research, standardized paired observations provide a common framework for examining the same anatomy or finding from consistent perspectives. Investigators can compare interpretations or measurements with less dependence on a single viewing angle. This supports more reproducible clinical assessments and may improve the consistency of comparisons across participants, evaluations, or study conditions when the workflow is applied uniformly.