Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Imaging Studies V: Intravenous Urography and Retrograde Pyelography01:22

Imaging Studies V: Intravenous Urography and Retrograde Pyelography

1.2K
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...
1.2K
Fineness of Cement01:15

Fineness of Cement

496
The fineness of cement directly influences the rate of hydration, as the hydration begins at the surface of the cement particles. In addition to hydration, the fineness of cement is vital for various properties of concrete including workability, gypsum requirement, and long-term behavior. The fineness of cement is represented in terms of the specific surface of cement which is typically measured in square meters per kilogram, with several methods available for this determination.
Direct...
496
Fineness Modulus01:19

Fineness Modulus

1.5K
The fineness modulus (FM) of aggregate is a numerical index that measures the coarseness or fineness of the particles. It is calculated by adding the cumulative percentages of aggregate retained on each of a specified series of sieves and dividing the sum by 100.
Consider performing sieve analysis on sand through a set of ASTM sieves. The weight of aggregate retained in each sieve and pan placed at the bottom is recorded, as given in Column B of Table 1.
To determine the fineness modulus of...
1.5K
CRISPR01:59

CRISPR

57.6K
Genome editing technologies allow scientists to modify an organism’s DNA via the addition, removal, or rearrangement of genetic material at specific genomic locations. These types of techniques could potentially be used to cure genetic disorders such as hemophilia and sickle cell anemia. One popular and widely used DNA-editing research tool that could lead to safe and effective cures for genetic disorders is the CRISPR-Cas9 system. CRISPR-Cas9 stands for Clustered Regularly Interspaced...
57.6K
RNA Interference01:23

RNA Interference

27.9K
RNA interference (RNAi) is a process in which a small non-coding RNA molecule blocks the post-transcriptional expression of a gene by binding to its messenger RNA (mRNA) and preventing the protein from being translated.
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
27.9K
Protein Folding01:22

Protein Folding

127.0K
Overview
127.0K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

US-guided fine-needle aspiration biopsy of thyroid nodules.

Acta radiologica (Stockholm, Sweden : 1987)·2002
Same author

One-step endosonography-guided drainage of a pancreatic pseudocyst: a new technique of stent delivery through the echo endoscope.

Endoscopy·1998
Same author

Polycystic liver disease, complicated by Salmonella infection.

Scandinavian journal of gastroenterology·1996
Same author

Endoscopic ultrasonography and real-time guided fine-needle aspiration biopsy of solid lesions of the mediastinum suspected of malignancy.

Chest·1996
Same author

[Percutaneous cysto-gastrostomy of chronic cysts in the pancreas. A nine-year clinical experience].

Ugeskrift for laeger·1996
Same author

A new biopsy handle instrument for endoscopic ultrasound-guided fine-needle aspiration biopsy.

Gastrointestinal endoscopy·1996
Same journal

Bladder cancer-from pathogenesis to prevention, 2008. Proceedings of an international consultation organized by the WHO Collaborating Center for Urologic Tumors. April 24-25, 2008. Stockholm, Sweden.

Scandinavian journal of urology and nephrology. Supplementum·2009
Same journal

The global burden of urinary bladder cancer.

Scandinavian journal of urology and nephrology. Supplementum·2008
Same journal

Bladder cancer: chemoprevention, complementary approaches and budgetary considerations.

Scandinavian journal of urology and nephrology. Supplementum·2008
Same journal

Screening for bladder cancer: theoretical and practical issues in considering the treated and untreated natural history of the various forms of the disease.

Scandinavian journal of urology and nephrology. Supplementum·2008
Same journal

Combining a molecular profile with a clinical and pathological profile: biostatistical considerations.

Scandinavian journal of urology and nephrology. Supplementum·2008
Same journal

How to combine the molecular profile with the clinicopathological profile of urothelial neoplastic lesions.

Scandinavian journal of urology and nephrology. Supplementum·2008
See all related articles

Related Experiment Video

Updated: Jan 26, 2026

Cortical Bone Assessment Using Ultrasonic Guided Waves: A Reproducibility Study in a Healthy Population
09:02

Cortical Bone Assessment Using Ultrasonic Guided Waves: A Reproducibility Study in a Healthy Population

Published on: January 31, 2025

1.5K

Ultrasonically guided fine needle pyelography.

S Hancke1

  • 1Ultrasonic Laboratory, Gentofte Hospital, University of Copenhagen, Hellerup, Denmark.

Scandinavian Journal of Urology and Nephrology. Supplementum
|January 1, 1991
PubMed
Summary
This summary is machine-generated.

Ultrasonically guided fine needle pyelography allows safe and effective renal pelvis puncture using a specialized needle. This simple, inexpensive method enables detailed radiologic investigation even with mild calyceal dilatation.

More Related Videos

Detection of Extravascular Trypanosoma Parasites by Fine Needle Aspiration
08:33

Detection of Extravascular Trypanosoma Parasites by Fine Needle Aspiration

Published on: August 7, 2019

9.6K
Three-Dimensional Ultrasonic Needle Tip Tracking with a Fiber-Optic Ultrasound Receiver
04:33

Three-Dimensional Ultrasonic Needle Tip Tracking with a Fiber-Optic Ultrasound Receiver

Published on: August 21, 2018

10.8K

Related Experiment Videos

Last Updated: Jan 26, 2026

Cortical Bone Assessment Using Ultrasonic Guided Waves: A Reproducibility Study in a Healthy Population
09:02

Cortical Bone Assessment Using Ultrasonic Guided Waves: A Reproducibility Study in a Healthy Population

Published on: January 31, 2025

1.5K
Detection of Extravascular Trypanosoma Parasites by Fine Needle Aspiration
08:33

Detection of Extravascular Trypanosoma Parasites by Fine Needle Aspiration

Published on: August 7, 2019

9.6K
Three-Dimensional Ultrasonic Needle Tip Tracking with a Fiber-Optic Ultrasound Receiver
04:33

Three-Dimensional Ultrasonic Needle Tip Tracking with a Fiber-Optic Ultrasound Receiver

Published on: August 21, 2018

10.8K

Area of Science:

  • Urology
  • Radiology
  • Medical Devices

Background:

  • Fine needle pyelography is crucial for renal system assessment.
  • Conventional methods may face challenges with mild renal pelvis dilatation.

Purpose of the Study:

  • To describe a novel ultrasonically guided fine needle pyelography technique.
  • To evaluate the safety and efficacy of this minimally invasive procedure.

Main Methods:

  • Utilized a long (150-200 mm), 0.8 mm needle for renal pelvis puncture.
  • Needle was bent and fixed to the skin for stability.
  • Performed contrast medium injection for radiologic imaging.

Main Results:

  • Successfully performed ultrasonically guided fine needle pyelography in 49 patients.
  • The procedure was effective even in cases of very mild calyceal dilatation.
  • No complications were reported during or after the procedures.

Conclusions:

  • Ultrasonically guided fine needle pyelography is a simple, safe, and cost-effective method.
  • This technique facilitates detailed radiologic investigation of the renal system.
  • It offers a viable alternative for patients with mild renal pelvis abnormalities.