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Related Concept Videos

Proton (¹H) NMR: Chemical Shift01:07

Proton (¹H) NMR: Chemical Shift

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Gene therapy is a technique where a gene is inserted into a person’s cells to prevent or treat a serious disease. The added gene may be a healthy version of the gene that is mutated in the patient, or it could be a different gene that inactivates or compensates for the patient’s disease-causing gene. For example, in patients with severe combined immunodeficiency (SCID) due to a mutation in the gene for the enzyme adenosine deaminase, a functioning version of the gene can be...
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¹H NMR of Labile Protons: Temporal Resolution01:10

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Protons bonded to heteroatoms such as nitrogen and oxygen exhibit a range of chemical shift values. This is due to the varying degree of hydrogen bonding between the proton and the heteroatom in other molecules. The extent of hydrogen bonding affects the electron density around the proton, thereby giving different chemical shift values for the protons in the proton NMR spectrum.
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¹H NMR of Labile Protons: Deuterium (²H) Substitution00:48

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This lesson illustrates the role of deuterium substitution in simplifying the NMR spectrum of compounds comprising labile protons. One method employed is the use of deuterium. Amongst the three isotopes of hydrogen, deuterium (2H) has a nucleus composed of one proton and one neutron. When the D2O solvent is added to a pure dry ethanol solution, its labile proton is substituted with deuterium.
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Group therapy is a sociocultural approach to psychological treatment, where individuals with shared psychological challenges come together under the guidance of a mental health professional. This therapeutic modality offers unique opportunities for individuals to connect, share, and grow within the context of a supportive group. By fostering mutual understanding and collaboration, group therapy can address a range of psychological concerns effectively, often complementing or surpassing the...
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Behavior therapy incorporates diverse techniques rooted in classical conditioning principles to address maladaptive behaviors and anxiety disorders. These methods aim to reduce avoidance behaviors, foster adaptive coping mechanisms, and alter associations between stimuli and responses, making them effective in a wide range of therapeutic contexts.
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Proton Therapy Delivery and Its Clinical Application in Select Solid Tumor Malignancies
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Proton Therapy Delivery and Its Clinical Application in Select Solid Tumor Malignancies

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Image Guidance for Proton Therapy.

R I MacKay1

  • 1Manchester Academic Health Science Centre, Institute of Cancer Sciences, Manchester Cancer Research Centre (MCRC), The University of Manchester, Manchester, UK; Radiotherapy Related Research, The Christie NHS Foundation Trust, Manchester, UK.

Clinical Oncology (Royal College of Radiologists (Great Britain))
|March 20, 2018
PubMed
Summary
This summary is machine-generated.

Image-guided proton therapy enhances tumor targeting and spares normal tissues by leveraging the Bragg peak. Precise image guidance is crucial for accurate proton range prediction and delivery, optimizing treatment outcomes.

Keywords:
Image guidanceProton

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Area of Science:

  • Medical Physics
  • Radiation Oncology
  • Radiotherapy Technology

Background:

  • Image-guided radiotherapy (IGRT) is integral to modern treatment delivery.
  • Proton therapy offers superior dose distributions via the Bragg peak, targeting tumors while sparing normal tissues.
  • Proton therapy's sharp dose falloff necessitates meticulous planning and delivery.

Purpose of the Study:

  • To review the current state of image guidance in proton therapy.
  • To highlight differences in image guidance between proton and X-ray therapy.
  • To discuss future advancements in image-guided proton therapy.

Main Methods:

  • Review of current image guidance techniques in proton therapy.
  • Comparison of image guidance strategies for proton versus photon therapy.
  • Exploration of emerging technologies for enhanced proton therapy guidance.

Main Results:

  • Proton therapy dose distributions are highly sensitive to range uncertainties and delivery deviations.
  • Image guidance is essential for managing proton range uncertainties and ensuring accurate delivery.
  • Current image guidance in proton therapy differs from X-ray therapy due to unique proton beam characteristics.

Conclusions:

  • Realizing the full potential of proton therapy relies on stringent image guidance.
  • Advanced image guidance is key to overcoming the challenges of proton range prediction and delivery.
  • Future developments promise further improvements in image-guided proton therapy precision and efficacy.