geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

MDCT of right ventricular function: comparison of right ventricular ejection fraction estimation and equilibrium radionuclide ventriculography, part 1


, : MDCT of right ventricular function: comparison of right ventricular ejection fraction estimation and equilibrium radionuclide ventriculography, part 1. Ajr. American Journal of Roentgenology 187(6): 1597-1604

The aim of this study was to calculate right ventricular ejection fraction by use of ECG-gated MDCT and to compare the results with those of equilibrium radionuclide ventriculography. Forty-nine consecutively examined patients (30 men, 19 women; mean age, 59 years) with known or suspected right ventricular dysfunction secondary to bronchopulmonary (n = 30) or pulmonary vascular (n = 19) disease underwent ECG-gated 16-MDCT angiography of the heart (rotation time, 0.42 second; 120 kV; 300 mAs; collimation, 12 x 0.75 mm; pitch, 0.2) after CT angiographic examination of the entire thorax according to a standard protocol. Biphasic administration of a 30% contrast agent was systematically performed (phase 1, 90 mL at 3 mL/s; phase 2, 30 mL at 1.5 mL/s); no patient received additional medication. Right ventricular ejection fraction was calculated after two reviewers in consensus determined the reconstruction windows and segmentation of the right ventricular cavity on a series of diastolic and systolic short-axis images. The results were compared with those of equilibrium radionuclide ventriculography. At data acquisition, the mean (+/- SD) heart rate of the study group was 82 +/- 13.87 beats per minute (BPM) (range, 51-115 BPM). ECG showed a sinus rhythm in 30 (61%) of the patients and irregular cardiac rhythm in 19 (39%) of the patients. Agreement between the two techniques was estimated by intraclass correlation coefficient (0.77), the method of Bland and Altman (limits of concordance, -14.9 and 13.7), and percentage of variability between two measurements expressed by mean absolute percentage error (12.1%). The estimated effective dose for heart examination was 7.48 mSv with CT and 5 mSv with scintigraphy. The mean effective dose for the chest and heart CT examinations was 11.64 mSv. Right ventricular ejection fraction can be reliably estimated with 16-MDCT in unselected patients.

US$19.90

PMID: 17114556

DOI: 10.2214/AJR.05.1193


Other references

Macdermot, V., 1960: The changes in the motor end-plate in myasthenia gravis. Eight cases of myasthenia gravis are presented, including muscle biopsies stained by hematoxylin-eosin and methylene blue. Ages of patients were between 30 and 60 years. In nearly all cases the muscle selected was not clinically fatigable or weak...

Tranquilli, A.Luigi., 2015: Prediction, medical illness and the risk of pre-eclampsia. Preeclampsia, the leading cause of maternal and perinatal morbidity and mortality, has been recently considered not only a pregnancy disease but also a risk factor for developing diseases later in life. Preeclampsia is becoming a disease of intere...

Schwartz, H., 1971: The education of a neurosurgeon. Report of the second workshop for neurosurgical training program directors. Welcoming address. Journal of Neurosurgery 34(2 Pt 2): Suppl:255-6

Yusof, R.; Clum, S.; Wetzel, M.; Murthy, H.M.; Padmanabhan, R., 2000: Purified NS2B/NS3 serine protease of dengue virus type 2 exhibits cofactor NS2B dependence for cleavage of substrates with dibasic amino acids in vitro. Dengue virus type 2 NS3, a multifunctional protein, has a serine protease domain (NS3pro) that requires the conserved hydrophilic domain of NS2B for protease activity in cleavage of the polyprotein precursor at sites following two basic amino acid...

Cordeiro, N.; Faria, M.; Abraham, E.; Pothan, L.A., 2014: Assessment of the changes in the cellulosic surface of micro and nano banana fibres due to saponin treatment. The effect of saponin on the surface properties of banana fibres was studied by Inverse Gas Chromatography (IGC). Parameters including the dispersive component of the surface energy, surface heterogeneity, surface area, as well as acid-base surfac...

Al'tergot V.F.; Zubkus O.P.; Ignat'ev L.A., 1980: The heat stability of intact and detached leaves of spring wheat. Intact and detached leaves of 2-wk-old plants were heated, and loss of electrolytes, energy exchange and the accumulation of dry matter were examined. Intact leaves compared with detached leaves showed less damage and quicker reestablishment of br...

Anonymous, 1975: Roster of members of the Convention of American Instructors of the Deaf 1975. American Annals of the Deaf 120(4): 427-451

Jabr, F., 2016: The Doctor Will See You Now. Three innovative eyeglasses give physicians superhuman vision. Scientific American 312(6): 20-20

Varani J.; Mitra R.; Riser B.; Dixit V.; Nickoloff B., 1988: Modulation of keratinocyte behavior and extracellular matrix production by growth regulating factors. Clinical Research 36(3): 701A

Huang, X.; Bai, Q.; Hu, J.; Hou, D., 2017: A Practical Model of Quartz Crystal Microbalance in Actual Applications. A practical model of quartz crystal microbalance (QCM) is presented, which considers both the Gaussian distribution characteristic of mass sensitivity and the influence of electrodes on the mass sensitivity. The equivalent mass sensitivity of 5 MH...