Hydronephrosis index: a new method to track patients with hydronephrosis quantitatively

Urology
Stephen R ShapiroGeorge Steinhardt

Abstract

To show that hydronephrosis (HN) can be tracked by the quantitative reproducible hydronephrosis index (HI) and that HI is useful for serial ultrasound (US) studies to determine whether HN is improving or deteriorating. We found 60 hydronephrotic kidneys in 46 study patients. The other 32 kidneys were normal or absent. Serial US studies were performed more than 1 month apart over a 3-year period. Hydration was maximized with oral fluids. Cases ranged in age from 2 days to 13 years. We determined HI as follows: Operators outlined the perimeters of the kidney and dilated renal pelvis in the maximal longitudinal view. Respective areas were automatically calculated. We obtained HI by outlining the area of the kidney and separately outlining the area of the dilated renal pelvis within the kidney. We calculated HI percentage as 100 x (Total area of kidney minus area of dilated pelvis and calices)/(Total area). This percentage calculation represents the renal area determined reproducibly in a standardized fashion as if the calices were not there and is recorded as a dimensionless number. Hydronephrosis for 30 of 60 kidneys (50%) showed decreasing HN, and for 17 of 60 kidneys (28%) showed increasing HN. In 13 of 60 (22%) HN was unchange...Continue Reading

Citations

Nov 10, 2015·The Journal of Urology·Juan J CerrolazaMarius George Linguraru
Apr 20, 2010·Journal of Pediatric Urology·Hiep T NguyenJeffrey B Campbell
Mar 4, 2009·Advances in Urology·Krishnan VenkatesanGeorge F Steinhardt
Feb 11, 2015·Experimental and Therapeutic Medicine·Junmei WangXing Xie
Nov 5, 2016·IEEE Transactions on Medical Imaging·Juan J CerrolazaMarius George Linguraru
Jun 17, 2020·Frontiers in Pediatrics·Niccolo Maria Passoni, Craig Andrew Peters
Oct 13, 2020·Frontiers in Pediatrics·Ayse Kalyoncu Ucar, Sebuh Kurugoglu

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.