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Cardiac computed tomography (CT) scanning is an advanced cardiac imaging technique that utilizes CT technology, with or without intravenous (IV) contrast, to produce accurate cross-sectional virtual slices of specific areas of the heart, coronary circulation, and major blood vessels such as the aorta, pulmonary veins, and arteries. The computer processes these slices to generate three-dimensional images. Multidetector CT (MDCT) is a rapid form of CT scanning that captures multiple slices...
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Tomography refers to imaging by sections. Computed tomography (CT) is a non-invasive imaging technique that uses computers to analyze several cross-sectional X-rays to reveal minute details about structures in the body.
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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.
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DefinitionComputed Tomography (CT) of the genitourinary (GU) tract is a non-invasive imaging modality that utilizes X-rays and computer processing to generate detailed cross-sectional images of the urinary system, encompassing the kidneys, ureters, bladder, and adjacent structures such as the adrenal glands.PurposeCT scans of the GU tract serve several diagnostic and therapeutic purposes, including:Diagnosis of Urinary Tract Diseases: Detects kidney stones, tumors, cysts, and congenital...
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PET/CT Protocols and Artifacts in the Head and Neck.

Todd M Blodgett1, Alex Ryan1, Aref Akbarpouranbadr1

  • 1Department of Radiology, Hillman Cancer Center, University of Pittsburgh, 5115 Centre Avenue, Pittsburgh, PA 15232, USA.

PET Clinics
|May 10, 2016
PubMed
Summary

Combined PET/CT imaging offers advantages for head and neck cancer patients, improving lesion localization and radiation therapy planning. This review details relevant CT and PET protocols and discusses potential artifacts.

Keywords:
ArtifactsAttenuation correction artifactsHead and neck cancerPET/CTPET/CT protocols

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Area of Science:

  • Radiology
  • Nuclear Medicine
  • Oncology

Background:

  • Combined Positron Emission Tomography/Computed Tomography (PET/CT) has been clinically available for approximately seven years.
  • PET/CT offers significant advantages over separate PET and CT acquisitions, including consolidated imaging, enhanced data coregistration, and improved lesion localization.

Purpose of the Study:

  • To discuss Computed Tomography (CT) and Positron Emission Tomography (PET) protocols relevant to PET/CT imaging in head and neck cancer patients.
  • To describe the performance of the CT component of PET/CT scans.
  • To outline common PET/CT artifacts related to CT protocols.

Main Methods:

  • Review of established CT and PET imaging protocols for combined PET/CT in head and neck cancer.
  • Discussion of technical aspects of CT acquisition within the PET/CT framework.
  • Identification and categorization of artifacts arising from CT protocols in PET/CT.

Main Results:

  • Combined PET/CT facilitates more accurate lesion detection and characterization in head and neck malignancies.
  • Specific CT protocols are crucial for optimal PET/CT performance and radiation therapy planning.
  • Understanding potential CT-induced artifacts is essential for accurate PET/CT interpretation.

Conclusions:

  • Combined PET/CT is a valuable tool for head and neck cancer management, offering superior diagnostic information.
  • Adherence to optimized CT and PET protocols is vital for maximizing the benefits of PET/CT.
  • Awareness of CT-related artifacts is necessary to prevent misinterpretation and ensure diagnostic accuracy.