Dual-energy CT angiography of the lungs: comparison of test bolus and bolus tracking techniques for the determination of scan delay

European Journal of Radiology
Thomas HenzlerChristian Fink

Abstract

To prospectively compare test bolus and bolus tracking for the determination of scan delay of pulmonary dual-energy CT angiography in patients with suspected pulmonary embolism. 60 consecutive patients referred for CTA for exclusion of PE were randomized either into a test bolus group or into a bolus tracking group. All exams were performed on a 64-channel dual source CT scanner. A standard single-acquisition dual-energy CTA was performed after injection of 100ml Iomeprol 400 followed by a saline chaser of 4 ml/s. The scan delay was determined using either test bolus (n=30) or bolus tracking (n=30). Test bolus was performed using an additional 20 ml Iomeprol 400 injected with a rate of 4 ml/s during acquisition of a series of dynamic low-dose monitoring scans followed by injection of a saline bolus of 20 ml using the same flow rate. For DECT angiography of the lungs 100ml Iomeprol 400 was injected with an injection rate of 4 ml/s followed by a saline chaser of 20 ml using the same flow rate. Attenuation profiles of different vascular segments (pulmonary arteries, pulmonary parenchyma, aorta, all 4 heart chambers) were measured to evaluate the timing techniques. Overall image quality of dual-energy "perfusion" maps and virtual 1...Continue Reading

References

Sep 10, 2002·Journal of Computer Assisted Tomography·Filippo CademartiriGabriel P Krestin
Dec 13, 2005·European Radiology·Thomas G FlohrBernd M Ohnesorge
Dec 8, 2006·European Radiology·Thorsten R C JohnsonChristoph R Becker
Apr 7, 2007·Journal of Computer Assisted Tomography·Thorsten R C JohnsonChristoph R Becker
Sep 9, 2008·European Journal of Radiology·Sven F ThiemeThorsten R C Johnson
Feb 25, 2009·RöFo : Fortschritte auf dem Gebiete der Röntgenstrahlen und der Nuklearmedizin·C FinkK Nikolaou
May 22, 2009·AJR. American Journal of Roentgenology·Edward T D HoeyNicholas J Screaton
Jun 23, 2009·AJR. American Journal of Roentgenology·Sven F ThiemeKonstantin Nikolaou

❮ Previous
Next ❯

Citations

Feb 19, 2013·Pediatric Radiology·Hyun Woo Goo
Feb 24, 2011·AJR. American Journal of Roentgenology·Markus WeiningerU Joseph Schoepf
Nov 1, 2012·AJR. American Journal of Roentgenology·Thomas HenzlerU Joseph Schoepf
May 31, 2013·Journal of the South African Veterinary Association·Nicolette CasselPieter Becker
Oct 12, 2015·European Journal of Radiology·Sonja SudarskiPaul Apfaltrer
Jun 23, 2016·Cancer Imaging : the Official Publication of the International Cancer Imaging Society·Monika UhrigHeinz-Peter Schlemmer
Oct 30, 2018·Journal of Computer Assisted Tomography·Fernando Uliana KayEdson Amaro
Jun 1, 2013·Journal of Medical Radiation Sciences·Tara SucklingWarren Reed
Jun 9, 2020·The International Journal of Cardiovascular Imaging·Aleksander KosmalaBernhard Petritsch
Jun 23, 2020·Nihon Hoshasen Gijutsu Gakkai zasshi·Masato YoshidaTomoyasu Sato
Apr 21, 2012·Physics in Medicine and Biology·Fabian EisaWilli A Kalender
Apr 27, 2018·Journal of Clinical Medicine·Cameron AdlerRahmi Oklu

❮ 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.