Diffusion-enhanced visualization and quantification of vascular anomalies in three-dimensional rotational angiography: Results of an in-vitro evaluation

2002 ◽  
Vol 6 (3) ◽  
pp. 215-233 ◽  
Author(s):  
Erik Meijering ◽  
Wiro Niessen ◽  
Joachim Weickert ◽  
Max Viergever
Keyword(s):  
Three Dimensional ◽  
Vascular Anomalies ◽  
Rotational Angiography ◽  
In Vitro Evaluation

scholarly journals Low-Dose 3D Rotational Angiography in Measuring the Size of Intracranial Aneurysm: In Vitro Feasibility Study Using Aneurysm Phantom

2021 ◽  
Vol 16 (1) ◽  
pp. 59-63
Author(s):  
Hee Jong Ki ◽  
Bum-soo Kim ◽  
Jun-Ki Kim ◽  
Jai Ho Choi ◽  
Yong Sam Shin ◽  
...  
Keyword(s):  
Intracranial Aneurysm ◽  
Endovascular Treatment ◽  
Low Dose ◽  
Three Dimensional ◽  
3D Measurement ◽  
Rotational Angiography ◽  
3D Rotational Angiography ◽  
Conventional Dose ◽  
Noninferiority Margin

Purpose: Three-dimensional (3D) measurement of intracranial aneurysms is important in planning endovascular treatment, and 3D rotational angiography (RA) is effective in accurate measurement. The purpose of this study was to evaluate the feasibility of low dose 3D RA (5 seconds 0.10 μGy/frame) in measuring an intracranial aneurysm using an in vitro phantom.Materials and Methods: We investigated an <I>in vitro</i> 3D phantom of an intracranial aneurysm with 10 acquisitions of 3D RA with a conventional dose (5 seconds 0.36 μGy/frame) and 10 acquisitions with a low-dose (5 seconds 0.10 μGy/frame). 3D size and neck diameters of the aneurysm were measured and compared between the 2 groups (conventional and low-dose) using noninferiority statistics.Results: The aneurysm measurements were well-correlated between the 2 readers, and noninferiority in the measurement of aneurysmal size of low-dose 3D RA was demonstrated, as the upper margin of the 1-sided 97.5% confidence interval did not cross the pre-defined noninferiority margin of 0.2 mm by the 2 readers.Conclusion: Low-dose (5 seconds 0.10 μGy/frame) cerebral 3D RA is technically feasible and not inferior in in vitro 3D measurement of an intracranial aneurysm. Thus, low-dose 3D RA is promising and needs further evaluation for its clinical utility in the planning of endovascular treatment of an intracranial aneurysm.

In vitro evaluation of three-dimensional ultrasonography based on magnetic scanhead tracking

1998 ◽  
Vol 24 (8) ◽  
pp. 1161-1167 ◽  
Author(s):  
Odd Helge Gilja ◽  
Trygve Hausken ◽  
Snorri Olafsson ◽  
Knut Matre ◽  
Svein Ødegaard
Keyword(s):  
Three Dimensional ◽  
In Vitro Evaluation

Ultrasonic three-dimensional imaging and volume: An in vitro evaluation

1982 ◽  
Vol 49 (4) ◽  
pp. 897 ◽  
Author(s):  
James F. Brinkley ◽  
William Desmond McCallum ◽  
Richard L. Popp
Keyword(s):  
Three Dimensional ◽  
Three Dimensional Imaging ◽  
In Vitro Evaluation

In vitro evaluation of three-dimensional ultrasonography in volume estimation of abdominal organs

1994 ◽  
Vol 20 (2) ◽  
pp. 157-165 ◽  
Author(s):  
Odd Helge Gilja ◽  
Nils Thune ◽  
Knut Matre ◽  
Trygve Hausken ◽  
Svein ødegaard ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Volume Estimation ◽  
In Vitro Evaluation ◽  
Abdominal Organs

In Vitro Evaluation of Porous Biphasic Scaffolds

2007 ◽  
Vol 330-332 ◽  
pp. 935-938
Author(s):  
Silvia R. A. Santos ◽  
Antonella M. Rossi ◽  
L.R. Andrade ◽  
Marcelo Henrique Prado da Silva
Keyword(s):  
Stem Cells ◽  
Tricalcium Phosphate ◽  
Three Dimensional ◽  
Adipose Stem Cells ◽  
In Vitro Evaluation ◽  
Bioactive Ceramics ◽  
Biphasic Scaffolds

In the present study, two methods for the production of three-dimensional scaffolds made of bioactive ceramics are presented. Depending on the method, the final product can be composed by pure hydroxyapatite or biphasic: hydroxiapatite + tricalcium phosphate. Bioactivity tests showed that all scaffolds are bioactive. Preliminary studies with adipose stem cells indicated biocompatibility of both scaffolds.

Sign in / Sign up

Export Citation Format

Share Document