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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 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 II: Ultrasonography

Imaging Studies II: Ultrasonography

IntroductionUltrasonography, or renal ultrasound, is a noninvasive medical imaging technique that uses high-frequency sound waves to visualize the kidneys, ureters, bladder, and surrounding tissues.Indications for Urinary System UltrasonographyUrinary system ultrasonography is indicated in various clinical scenarios, such as:Kidney Stones (Urolithiasis): To detect and monitor the size and presence of kidney or urinary tract stones.Hydronephrosis: To assess the dilation of the renal pelvis and...

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: 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 VII: Vascular Imaging

Imaging Studies VII: Vascular Imaging

DefinitionRenal angiography, also known as renal arteriography, is an imaging technique used to obtain a comprehensive view of blood flow and the vascular structure of blood vessels in the kidneys and surrounding areas.PurposeRenal angiography detects blood vessel abnormalities in the kidneys, such as aneurysms, stenosis, thrombosis, vascular tumors, and renal artery stenosis. It evaluates kidney function and guides interventional treatments like angioplasty or stent placement.Pre-Procedure...

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Related Experiment Video

Updated: Jun 27, 2026

Multimodality Diagnosis of Mesenteric Ischemia

Multimodality Diagnosis of Mesenteric Ischemia

Published on: July 21, 2023

[Imaging tests in acute abdominal pain].

C del Arco Galán¹, M L Parra Gordo, G García-Casasola Sánchez

¹Servicio de Urgencias, Hospital Universitario La Princesa, Madrid, España.

Revista Clinica Espanola

|December 23, 2008

Summary

Diagnosing acute abdominal pain requires careful medical history to select appropriate tests. While plain x-rays have limited use, ultrasound and CT scans are valuable for specific conditions.

Area of Science:

Gastroenterology
Radiology
Emergency Medicine

Context:

Acute abdominal pain presents a significant diagnostic challenge due to its extensive differential diagnosis.
Some causes of abdominal pain are serious and life-threatening, necessitating prompt and accurate diagnosis.
The medical history is crucial for guiding the selection of appropriate diagnostic investigations.

Purpose:

To outline the diagnostic utility of various imaging modalities for acute abdominal pain.
To emphasize the importance of clinical history in guiding diagnostic test selection.
To differentiate the roles of plain abdominal X-ray, ultrasound, and CT scans.

Summary:

Plain abdominal X-rays offer limited diagnostic efficiency, primarily used when perforation, obstruction, or foreign body ingestion is suspected.

Related Experiment Videos

Last Updated: Jun 27, 2026

Multimodality Diagnosis of Mesenteric Ischemia

Multimodality Diagnosis of Mesenteric Ischemia

Published on: July 21, 2023

Abdominal ultrasound is the preferred imaging test for suspected biliary tract pathology, complicated renal colic, and gynecological conditions.

Abdominal computed axial tomography (CT) is highly sensitive and specific for most causes of abdominal pain but should be reserved for select cases.

Impact:

Improved diagnostic accuracy for acute abdominal pain.
Optimized utilization of imaging resources in emergency settings.
Enhanced patient outcomes through timely and appropriate diagnosis and treatment.