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Imaging Studies III: Gastrointestinal Motility Studies and Virtual Colonoscopy

Imaging Studies III: Gastrointestinal Motility Studies and Virtual Colonoscopy

This lesson explores three gastrointestinal imaging techniques: radionuclide testing, colonic transit studies, and virtual colonoscopy.
Radionuclide Testing
Radionuclide testing is a sophisticated medical technique for assessing gastrointestinal motility. It focuses on gastric emptying and colonic transit time. Radioactive markers track the movement of food through the digestive system, providing insights into gastrointestinal disorders.
In gastric emptying studies, a meal's liquid and solid...

Imaging Studies VI: Voiding Cystourethrography and Cystography

Imaging Studies VI: Voiding Cystourethrography and Cystography

Voiding Cystourethrography (VCUG) and Cystography are specialized radiographic procedures used to examine the structure and function of the bladder and urethra.Voiding Cystourethrography (VCUG)A Voiding Cystourethrogram (VCUG) is a diagnostic imaging procedure that assesses the anatomy and function of the lower urinary tract. It focuses on the bladder, bladder neck, and urethra, helping detect abnormalities such as vesicoureteral reflux (VUR)—the backward or reverse flow of urine into the...

Imaging Studies I: Kidney, Ureter, and Bladder Studies

Imaging Studies I: Kidney, Ureter, and Bladder Studies

Kidney, Ureter, and Bladder (KUB) StudiesKidney, Ureter, and Bladder (KUB) studies are standard diagnostic imaging procedures used to assess the anatomy of the urinary system. They are commonly utilized for patients experiencing abdominal pain or urinary symptoms. By using a simple X-ray of the abdomen, KUB studies can reveal structural and pathological abnormalities within the kidneys, ureters, and bladder. These studies are particularly valuable in diagnosing kidney stones, urinary...

Imaging Studies V: Intravenous Urography and Retrograde Pyelography

Imaging Studies V: Intravenous Urography and Retrograde Pyelography

IntroductionIntravenous Urography (IVU) and Retrograde Pyelography (RP) are important diagnostic imaging techniques used to evaluate the urinary system. These methods help identify structural abnormalities, obstructions, and functional issues in the kidneys, ureters, and bladder. Both procedures use iodine-based contrast media to enhance the visibility of urinary tract structures on X-ray images, though they differ in their methods and indications.1. Intravenous Urography (IVU)Intravenous...

Imaging Studies III: Computed Tomography

Imaging Studies III: Computed Tomography

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...

Imaging Studies IV: Magnetic Resonance Imaging

Imaging Studies IV: Magnetic Resonance Imaging

Introduction:Magnetic Resonance Imaging, or MRI, can include a specialized imaging technique of the urinary system known as Magnetic Resonance Urography (MRU). This radiation-free technique uses strong magnetic fields and radio waves to produce detailed images with the help of a computer. MRU is particularly effective for visualizing fluid-filled structures like the kidneys, ureters, and bladder.Applications of MRI in the Genitourinary SystemKidneys and Ureters: MRI detects tumors, cysts,...

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Related Experiment Video

Updated: Jul 10, 2026

Detection of Extravascular Trypanosoma Parasites by Fine Needle Aspiration

Detection of Extravascular Trypanosoma Parasites by Fine Needle Aspiration

Published on: August 7, 2019

Imaging of ascariasis.

C J Das¹, J Kumar, J Debnath

¹Department of Radiodiagnosis, All India Institute of Medical Sciences, New Delhi, India. dascj@yahoo.com

Australasian Radiology

|October 26, 2007

Summary

Ascariasis, caused by Ascaris lumbricoides, is a common parasitic infection. Imaging is crucial for detecting intestinal and hepatobiliary complications of ascariasis.

Area of Science:

Gastroenterology
Infectious Diseases
Radiology

Background:

Ascaris lumbricoides is a prevalent worldwide gastrointestinal parasite.
Ascariasis can lead to asymptomatic infections, non-specific abdominal symptoms, or severe complications like intestinal obstruction and hepatobiliary issues.

Purpose of the Study:

To illustrate the diverse imaging features of intestinal and hepatobiliary ascariasis.
To highlight the role of imaging in diagnosing ascariasis and its complications.

Main Methods:

This is a pictorial essay.
The study reviews and illustrates imaging findings of ascariasis.

Main Results:

Ascariasis can manifest with various complications including intestinal obstruction, volvulus, perforation, biliary colic, cholecystitis, cholangitis, liver abscess, and pancreatitis.

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Leveraging Micro-CT Scanning to Analyze Parasitic Plant-Host Interactions

Leveraging Micro-CT Scanning to Analyze Parasitic Plant-Host Interactions

Published on: January 12, 2022

Related Experiment Videos

Last Updated: Jul 10, 2026

Detection of Extravascular Trypanosoma Parasites by Fine Needle Aspiration

Detection of Extravascular Trypanosoma Parasites by Fine Needle Aspiration

Published on: August 7, 2019

Leveraging Micro-CT Scanning to Analyze Parasitic Plant-Host Interactions

Leveraging Micro-CT Scanning to Analyze Parasitic Plant-Host Interactions

Published on: January 12, 2022

Imaging modalities effectively demonstrate the presence of Ascaris worms and associated pathological changes.

Conclusions:

Imaging is essential for diagnosing ascariasis and its spectrum of gastrointestinal and hepatobiliary complications.
Radiological assessment aids in identifying worm burden and predicting potential complications.