PMID: 9434973Jan 22, 1998Paper

Rapid measurement of Gd-DTPA extraction fraction in a dialysis system using echo-planar imaging

Medical Physics
E R NiendorfG E Santyr

Abstract

Gd-DTPA (Magnevist, Berlex, Wayne, NJ) extraction fractions (EF) have been measured for three dialysis filter types using an echo-planar imaging (EPI) Look-Locker T1 measurement technique under conditions of fast and slow flow. The mean EF measured in Fresenius (Bad Homburg, Germany) F3, F6, and F8 dialysis filters were 0.015 +/- 0.005, 0.053 +/- 0.004, and 0.084 +/- 0.003, respectively, under conditions of fast flow which provided complete refreshment of spins in the intervals between read-out pulse samples of the T1 relaxation recovery. Data acquisition and post-processing techniques were developed to extend the accuracy of the LL technique to systems with slow flow which did not provide complete refreshment of spins between samples of the T1 recovery. A multi-shot EPI LL interleaved acquisition of relaxation recovery space (IRRS) provided T1 measurement accuracy comparable to the refreshed system, +/- 10, but at the expense of increased scan times (factor of 2 or 3). Discarding the first few non-equilibrium relaxation recovery samples from the T1 fit allowed accurate T1 estimation (+/- 10) with a single-shot EPI LL method under conditions of slow flow. These EPI LL EF measurement methods may provide useful techniques for eva...Continue Reading

References

May 1, 1991·Radiology·J A Becker
May 1, 1995·Journal of Magnetic Resonance Imaging : JMRI·S L TalagalaG R Applegate
Sep 1, 1994·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·C L DumoulinC Batey
Oct 1, 1996·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·E R NiendorfT M Grist

❮ Previous
Next ❯

Citations

Dec 13, 2007·Pediatric Radiology·John R Votaw, Diego Martin
Feb 1, 2006·Abdominal Imaging·N GrenierC Combe
Feb 1, 2006·Abdominal Imaging·H J MichaelyS O Schoenberg
Nov 11, 1999·Radiographics : a Review Publication of the Radiological Society of North America, Inc·Q DongM R Prince
Jul 16, 2005·Radiology·Graham SommerPamela Schraedley-Desmond
Nov 24, 2005·AJR. American Journal of Roentgenology·Richard A JonesJ Damien Grattan-Smith
Aug 22, 2008·AJR. American Journal of Roentgenology·Pierre-Hugues VivierJean-Nicolas Dacher
May 31, 2011·Journal de radiologie·C MassoudM Zanca
Sep 16, 2006·European Journal of Radiology·Nicolas GrenierOlivier Hauger
Mar 12, 2005·Magnetic Resonance Imaging Clinics of North America·Henrik J MichaelyMaximilian F Reiser
Feb 12, 2002·Journal of Magnetic Resonance Imaging : JMRI·Curtis H CoulamF Graham Sommer
Jul 21, 2005·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Yakir S LevinDaniel M Spielman

❮ 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.