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Computed Tomography

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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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Scientists record evolutionary history by analyzing fossil, morphological, and genetic data. The fossil record documents the history of life on Earth and provides evidence for evolution. However, both fossil and living organisms offer evidence that outlines Earth’s evolutionary history.
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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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Microbiology, a scientific field dedicated to the study of microorganisms, has undergone profound development since its inception in the 17th century. Its history is marked by key discoveries and technological advancements that have shaped our understanding of life at the microscopic level and transformed medicine, agriculture, and industry.Early Foundations of MicrobiologyThe early foundations of microbiology were built on groundbreaking observations and the development of pioneering...
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Updated: Jan 28, 2026

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Coronary Computed Tomography: A Brief History.

Saurabh Jha1

  • 1Hospital of University of Pennsylvania, 3400 Spruce Street, Philadelphia, PA 19104, USA.

PET Clinics
|March 4, 2019
PubMed
Summary

Coronary computed tomography (CT) has evolved significantly, demonstrating increasing diagnostic accuracy and improved patient outcomes. This imaging technique rigorously meets higher evidence standards over time.

Area of Science:

  • Medical imaging
  • Radiology
  • Cardiovascular imaging

Background:

  • Coronary computed tomography (CT) is a well-established diagnostic imaging modality.
  • Its evidence base aligns with the Fryback and Thornbury hierarchical model of diagnostic imaging efficacy.
  • Technological advancements have driven the evolution of coronary CT.

Purpose of the Study:

  • To review the historical development and evidence progression of coronary CT.
  • To illustrate how coronary CT has met increasing standards of proof for its clinical utility.

Main Methods:

  • Historical review of coronary CT technology evolution (electron beam, helical, multidetector CT).
  • Analysis of evidence generation stages: proof of concept, diagnostic accuracy, and outcome improvement.
Keywords:
Coronary CTDiagnostic efficacyOutcomesRandomized controlled trials

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  • Comparison with competing imaging modalities.

    • Main Results:

    • Coronary CT technology has progressed through distinct phases of development.
    • Each technological advancement required progressively higher levels of clinical evidence.
    • Demonstrated increasing diagnostic accuracy and evidence of improved patient outcomes.

    Conclusions:

    • Coronary CT has a robust and evolving evidence base.
    • The trajectory of coronary CT validation follows established models of imaging efficacy.
    • Continued technological innovation in coronary CT is supported by rigorous evidence of clinical benefit.