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Computed Tomography

Computed Tomography

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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Imaging Studies II: Positron Emission Tomography and Scintigraphy

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Positron Emission Tomography (PET) is a medical imaging technique that provides crucial insights into the body's physiological functions at a molecular level. It is an indispensable resource for diagnosing, staging, and monitoring various illnesses, notably cancer, neurological disorders, and cardiovascular conditions.
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Positron Emission Tomography

Positron Emission Tomography

Positron emission tomography (PET) is a medical imaging technique involving radiopharmaceuticals — substances that emit short-lived radiation. Although the first PET scanner was introduced in 1961, it took 15 more years before radiopharmaceuticals were combined with the technique and revolutionized its potential.
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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...

Imaging Studies III: Computed Tomography

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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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Related Experiment Video

Updated: Jul 7, 2026

A Whole Body Dosimetry Protocol for Peptide-Receptor Radionuclide Therapy (PRRT): 2D Planar Image and Hybrid 2D+3D SPECT/CT Image Methods

A Whole Body Dosimetry Protocol for Peptide-Receptor Radionuclide Therapy (PRRT): 2D Planar Image and Hybrid 2D+3D SPECT/CT Image Methods

Published on: April 24, 2020

SPECT/CT physical principles and attenuation correction.

James A Patton¹, Timothy G Turkington

¹Vanderbilt University Medical Center, 21st Avenue South and Garland, Nashville, TN 37232, USA. jim.patton@vanderbilt.edu

Journal of Nuclear Medicine Technology

|February 22, 2008

Summary

This summary is machine-generated.

Hybrid SPECT/CT systems uniquely combine nuclear medicine with CT imaging. This fusion provides precise localization of physiologic data and accurate attenuation correction, improving diagnostic accuracy and treatment planning for nuclear medicine scans.

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A Whole Body Dosimetry Protocol for Peptide-Receptor Radionuclide Therapy (PRRT): 2D Planar Image and Hybrid 2D+3D SPECT/CT Image Methods

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Proton Therapy Delivery and Its Clinical Application in Select Solid Tumor Malignancies

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Published on: February 6, 2019

Area of Science:

Nuclear Medicine Imaging
Medical Physics
Radiology

Background:

Nuclear medicine techniques visualize physiologic activity uniquely.
Precise localization of radiotracer uptake is crucial for distinguishing normal from abnormal findings.
Accurate localization aids in effective treatment planning for identified abnormalities.

Purpose of the Study:

To highlight the capabilities of hybrid SPECT/CT systems in nuclear medicine.
To explain the role of CT data in SPECT image analysis.
To discuss the importance of accurate image registration in SPECT/CT.

Main Methods:

Integration of computed tomography (CT) data with single-photon emission computed tomography (SPECT) imaging.
Utilizing CT for accurate attenuation correction of SPECT data.
Leveraging CT for precise anatomic localization of SPECT findings.

Main Results:

Hybrid SPECT/CT systems enable precise localization of physiologic data.
CT data provides accurate attenuation correction for SPECT images.
Anatomic information from CT enhances diagnostic interpretation of SPECT scans.

Conclusions:

Hybrid SPECT/CT systems offer significant advantages over standalone SPECT.
Accurate registration between CT and SPECT images is vital for optimal diagnostic performance.
These systems improve the diagnostic utility and clinical application of nuclear medicine.