Correlation of presumed circle area ratio with infravesical obstruction in men with lower urinary tract symptoms

M KojimaH Watanabe


To examine the predictive value of ultrasonic measurements obtained by transrectal ultrasonography for infravesical obstruction as evaluated by pressure flow studies. In 85 men with moderate to severe lower urinary tract symptoms, ultrasonic measurements including prostatic volume, transition zone volume, transition zone index (transition zone volume/prostatic volume), and presumed circle area ratio (PCAR) were compared with urodynamic parameters obtained by pressure flow studies. There were significant interrelationships between these ultrasonic measurements, which were all significantly greater in the obstructed patients than in the unobstructed patients. A simple regression analysis demonstrated that prostatic volume (r = 0.362, P < 0.001), transition zone volume (r = 0.373, P < 0.0005), transition zone index (r = 0.331, P < 0.005), and PCAR (r = 0.487, P < 0.0001) correlated significantly with the Abrams-Griffiths number. More importantly, a multiple regression analysis demonstrated PCAR to be the only independent determinant of the Abrams-Griffiths number. A receiver operator characteristics curve analysis showed that 0.8 was the most suitable cutoff value of PCAR for the prediction of infravesical obstruction with a diagn...Continue Reading


Nov 1, 1975·The Journal of Urology·H WatanabeM Saitoh
Nov 1, 1974·The Tohoku Journal of Experimental Medicine·H WatanabeM Saito
Jun 7, 1969·British Medical Journal·J E CastroR Shackman
Apr 1, 1981·Endocrinologia Japonica·T KodamaJ Shimazaki
Jan 1, 1983·Urologia Internationalis·K M JensenP O Madsen
Sep 1, 1984·The Journal of Urology·S J BerryL L Ewing
Jan 1, 1980·Scandinavian Journal of Urology and Nephrology·J T Andersen, J Nordling

❮ Previous
Next ❯


Nov 17, 2009·World Journal of Urology·Brian A ParsonsMarcus J Drake
Jan 1, 1997·Ultrasound in Medicine & Biology·M KojimaO Ukimura
Sep 13, 2002·International Journal of Urology : Official Journal of the Japanese Urological Association·Nobuo TsuruKimio Fujita
Oct 13, 2006·Radiologic Clinics of North America·Neil F Wasserman
Feb 18, 2009·BJU International·Jennifer L St SauverSteven J Jacobsen
Sep 1, 2007·Medical Hypotheses·Kang Su ChoSung Joon Hong
Mar 22, 2000·Current Opinion in Urology·R G Aarnink, H Wijkstra
Dec 24, 2019·Journal of Medical Ultrasound·Olubukola Olayinka FanimiBukunmi Michael Idowu

❮ Previous
Next ❯

Related Concepts

Trending Feeds


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 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.


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.