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Related Concept Videos

Radiological Investigation III: Pulmonary Angiogram and PET Scan01:13

Radiological Investigation III: Pulmonary Angiogram and PET Scan

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Radiological investigations are paramount in the diagnosis and management of various pulmonary diseases. Two essential investigations are the Pulmonary Angiogram and the Positron Emission Tomography (PET) Scan.
Pulmonary Angiogram
A Pulmonary Angiogram is an invasive procedure involving injecting a contrast medium through a catheter threaded into the pulmonary artery or the right side of the heart to visualize the pulmonary vasculature. Computed Tomography (CT) scans have mainly replaced this...
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Related Experiment Video

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Author Spotlight: Improving Radiation Therapy Access with Radiation Planning Assistant
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Radiotherapy planning.

Minh Tam Truong1, Nataliya Kovalchuk1

  • 1Department of Radiation Oncology, Boston Medical Center, Boston University School of Medicine, Moakley Building, LL238, 830 Harrison Avenue, Boston, MA 02445, USA.

PET Clinics
|April 2, 2015
PubMed
Summary

Positron emission tomography/computed tomography (PET/CT) improves tumor delineation in radiotherapy planning. Accurate contouring is vital for conformal radiotherapy techniques like intensity-modulated radiotherapy and stereotactic body radiotherapy to ensure treatment success.

Keywords:
Cone beam computed tomographyDeformable registrationImage guided therapyIntensity-modulated radiotherapyPET/CTRadiotherapy planning

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Area of Science:

  • Oncology
  • Medical Imaging
  • Radiation Oncology

Background:

  • Accurate tumor delineation is crucial for effective radiotherapy, especially with advanced conformal techniques.
  • Intensity-modulated radiotherapy (IMRT) and stereotactic body radiotherapy (SBRT) require precise targeting due to steep dose gradients.
  • Gross tumor volume (GTV) definition directly impacts treatment outcomes and toxicity.

Purpose of the Study:

  • To outline the integration of PET/CT into radiotherapy planning.
  • To highlight the importance of PET/CT for accurate tumor delineation in various cancers.
  • To discuss the role of PET/CT in enhancing conformal radiotherapy delivery.

Main Methods:

  • Review of current literature on PET/CT application in radiotherapy planning.
  • Discussion of PET/CT's role in GTV delineation for head and neck, lung, and other solid tumors.
  • Analysis of how PET/CT aids in managing sharp dose gradients in IMRT and SBRT.

Main Results:

  • PET/CT significantly improves GTV delineation compared to CT alone.
  • Integration of PET/CT enhances the accuracy of radiotherapy planning and delivery.
  • PET/CT facilitates better differentiation between tumor and normal tissue, crucial for conformal radiotherapy.

Conclusions:

  • PET/CT is a valuable tool for optimizing radiotherapy planning and delivery.
  • Accurate tumor contouring using PET/CT is essential for achieving cure and locoregional control.
  • The integration of PET/CT is recommended for radiotherapy planning across various solid tumors, particularly in head and neck and lung cancers.