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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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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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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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The colon, or large intestine, is the final segment of the digestive system. Its primary functions include absorbing water and vitamins produced by gut bacteria and transforming waste from liquid to solid to form stool. In adults, the large intestine is approximately 5 feet long and consists of four main sections:
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Image Rendering Techniques in Postmortem Computed Tomography: Evaluation of Biological Health and Profile in Stranded Cetaceans
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Are we underutilising computer tomography colonography in Australia?

Shawn Z Lee1,2, Jonathon P Schubert1,2, Simon J B Prowse2

  • 1Medical School, Faculty of Health, University of Adelaide, Adelaide, South Australia, Australia.

Internal Medicine Journal
|April 22, 2022
PubMed
Summary

Computed tomography colonography (CTC) is a safe and accurate colorectal cancer screening tool. It offers an alternative to optical colonoscopy (OC) for select patient groups, potentially reducing screening wait times.

Keywords:
bowel cancerbowel cancer screeningcomputed tomography colonoscopy

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Area of Science:

  • Radiology
  • Gastroenterology
  • Oncology

Background:

  • Colorectal cancer (CRC) screening is crucial for early detection and improved patient outcomes.
  • Optical colonoscopy (OC) is the standard, but access can be limited by demand and patient factors.
  • Computed tomography colonography (CTC) presents a viable alternative screening method.

Purpose of the Study:

  • To evaluate the safety and accuracy of CTC for colorectal cancer screening.
  • To compare CTC's performance with optical colonoscopy (OC).
  • To identify patient populations that may benefit from CTC.

Main Methods:

  • Review of existing literature and clinical data on CTC for CRC screening.
  • Analysis of CTC's sensitivity and specificity for polyp detection compared to OC.
  • Consideration of newer CTC preparation techniques and limitations.

Main Results:

  • CTC demonstrates high sensitivity and specificity for polyp detection, comparable to OC.
  • Newer CTC preparations may enhance tolerability and accuracy.
  • Limitations include radiation exposure and reduced sensitivity for certain polyp types.

Conclusions:

  • CTC is a safe and accurate tool for CRC screening, particularly for specific patient groups.
  • It can serve as an alternative to OC, especially for frail patients or those with incomplete OC.
  • Increased CTC utilization could alleviate endoscopy backlogs and improve screening access.