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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,...

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 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 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...

Imaging Studies VII: Vascular Imaging

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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...

Imaging Studies VI: Voiding Cystourethrography and Cystography

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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...

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Related Experiment Video

Updated: May 13, 2026

A Cognitive Fusion-guided Prostate Biopsy Using Multiparametric Magnetic Resonance Imaging and Transrectal Ultrasound

A Cognitive Fusion-guided Prostate Biopsy Using Multiparametric Magnetic Resonance Imaging and Transrectal Ultrasound

Published on: March 21, 2025

[Imaging of the prostate].

J Walz¹, T Loch, G Salomon

¹Department of Urology, Institut Paoli-Calmettes Cancer Centre, 232, Boulevard Ste. Marguerite/ B.P.: 156, F-13273 Marseille, Frankreich. walzj@ipc.unicancer.fr

Der Urologe. Ausg. A

|March 16, 2013

Summary

This summary is machine-generated.

New prostate imaging technologies aim to enhance cancer diagnosis. Enhanced ultrasound, including elastography and contrast-enhanced ultrasound, shows promise in improving cancer detection rates and biopsy accuracy.

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Last Updated: May 13, 2026

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Use of MRI-ultrasound Fusion to Achieve Targeted Prostate Biopsy

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Pre-clinical Orthotopic Murine Model of Human Prostate Cancer

Pre-clinical Orthotopic Murine Model of Human Prostate Cancer

Published on: August 29, 2016

Area of Science:

Urology
Medical Imaging
Oncology

Background:

Conventional transrectal ultrasound (TRUS) has limitations in identifying prostate cancer lesions.
Several new imaging technologies have been developed to improve prostate cancer diagnosis.

Purpose of the Study:

To evaluate the effectiveness of new prostate imaging technologies in improving cancer detection.
To assess the diagnostic capabilities of enhanced ultrasound techniques compared to standard methods.

Main Methods:

Review of studies on enhanced ultrasound, including elastography and contrast-enhanced ultrasound.
Analysis of detection rates reported for various imaging systems like ANNA/C-TRUS and Histoscanning.

Main Results:

Elastography demonstrated good capability in identifying cancer lesions and increasing biopsy detection rates by up to 10%.
Contrast-enhanced ultrasound results vary, with some studies showing increased detection rates and others showing no change compared to randomized biopsies.
The ANNA/C-TRUS system shows comparable detection rates to randomized saturation biopsies with six targeted biopsies.

Conclusions:

Enhanced ultrasound technologies show potential for improving prostate cancer diagnosis.
Further multicenter trials are necessary to validate new imaging technologies for clinical practice.
Direct comparative studies are needed for systems like ANNA/C-TRUS, and Histoscanning lacks sufficient biopsy data.