Conformal Radiation
Conformal Radiation - Related Videos
01:20
Conformity
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2020
Conformity is the change in a person’s behavior to go along with the group, even if that person does not agree with the group. Asch’s Original Study Solomon Asch conducted several experiments in the 1950s to determine how people are affected by the thoughts and behaviors of other people. In one study, a group of participants was shown a series of printed line segments of different lengths: a, b, and c. Participants were then shown a fourth line segment: x. They were asked to identify which...
08:17
Dynamic Lung Tumor Tracking for Stereotactic Ablative Body Radiation Therapy
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Cited by 9 •
2015
Stereotactic ablative body radiation therapy (SBRT) involves the precise delivery of high-dose radiation to cancer tumor targets. A novel SBRT platform offers a first-of-its-kind gimbaled radiation accelerator mounted within a pivoting O-ring gantry capable of dynamic image-guided tumor tracking. Here, we describe dynamic tumor tracking for lung targets.
08:55
A Minority of One: Conformity to Group Norms
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2023
Source: William Brady & Jay Van Bavel—New York University It is obvious that we are influenced by those around us, but in the early to mid 1900's, psychologists began to study how potent social influence can be on our thoughts and behaviors. Motivated in part by attempts to explain the behaviors of Nazi soldiers in World War II, one topic of considerable interest at the time in psychology was conformity, the phenomenon in which people match their attitudes, behaviors, or beliefs to group...
02:59
Biological Effects of Radiation
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2020
All radioactive nuclides emit high-energy particles or electromagnetic waves. When this radiation encounters living cells, it can cause heating, break chemical bonds, or ionize molecules. The most serious biological damage results when these radioactive emissions fragment or ionize molecules. For example, α and β particles emitted from nuclear decay reactions possess much higher energies than ordinary chemical bond energies. When these particles strike and penetrate matter, they produce ions...
10:37
Spatial Separation of Molecular Conformers and Clusters
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Cited by 3 •
2014
We present a technique that allows the spatial separation of different conformers or clusters present in a molecular beam. An electrostatic deflector is used to separate species by their mass-to-dipole moment ratio, leading to the production of gas-phase ensembles of a single conformer or cluster stoichiometry.
FAQs
The treatment plan combines dose contributions from several selected directions rather than relying on one beam path. Each direction is chosen in relation to the tumor’s mapped three-dimensional position, so the overlapping high-energy dose can follow the target while reducing direct exposure of surrounding structures. This angular arrangement is particularly relevant when healthy tissue lies close to the tumor.
Multileaf collimators shape the beam boundary so that each treatment field better reflects the planned target outline. Their role is complementary to imaging and beam-angle selection: imaging identifies the three-dimensional target, angles determine how dose enters, and the collimator helps control the field shape. Together, these components support more selective dose placement.
Three-dimensional imaging, the mapped target boundary, selected beam angles, and beam shaping all influence the resulting dose distribution. Planning must coordinate these elements because the goal is not simply to deliver a high dose, but to make the combined pattern correspond to the tumor while limiting nearby normal-tissue exposure. Researchers can then examine how target conformity relates to tissue effects.
Planning begins with imaging to map the tumor in three dimensions. The team then identifies suitable beam directions, uses beam-shaping devices to match the planned fields to the target, and reviews the resulting dose distribution. This sequence allows the plan to be assessed not only for target alignment, but also for how much nearby healthy tissue is exposed.
Anatomically sensitive sites are a central application because tumors may be close to structures that should receive less radiation. By shaping the combined dose around the mapped tumor, the approach gives researchers and clinicians a way to study or deliver treatment with attention to nearby healthy tissue. Its value therefore depends on the tumor’s location and three-dimensional form.
In cancer research, conformal radiation provides a framework for evaluating dose distribution and normal-tissue effects. Those measurements can help characterize how closely a planned dose follows the target and how exposure is distributed around it. The approach also serves as a foundation for more advanced techniques, including intensity-modulated and image-guided radiotherapy, linking dose shaping with later treatment developments.