BACKGROUND AND PURPOSE: We developed a novel dynamic 4-dimensional CT angiography to accurately evaluate dynamics in cerebral aneurysm. METHODS: Dynamic 4-dimensional CT angiography achieved high-resolution 3-dimensional imaging with temporal resolution in a beating heart using dynamic scanning data sets reconstructed with a retrospective simulated R-R interval reconstruction algorithm. RESULTS: Movie artifacts disappeared on dynamic 4-dimensional CT angiography movies of 2 kinds of stationary phantoms (titanium clips and dry bone). In the virtual pulsating aneurysm model, pulsation on the dynamic 4-dimensional CT angiography movie resembled actual movement in terms of pulsation size. In a clinical study, dynamic 4-dimensional CT angiography showed 2-type motions: pulsation and anatomic positional changes of the cerebral artery. CONCLUSIONS: This newly developed 4-dimensional visualizing technique may deliver some clues to clarify the pathophysiology of cerebral aneurysms.
BACKGROUND AND PURPOSE: We developed a novel dynamic 4-dimensional CT angiography to accurately evaluate dynamics in cerebral aneurysm. METHODS: Dynamic 4-dimensional CT angiography achieved high-resolution 3-dimensional imaging with temporal resolution in a beating heart using dynamic scanning data sets reconstructed with a retrospective simulated R-R interval reconstruction algorithm. RESULTS: Movie artifacts disappeared on dynamic 4-dimensional CT angiography movies of 2 kinds of stationary phantoms (titanium clips and dry bone). In the virtual pulsating aneurysm model, pulsation on the dynamic 4-dimensional CT angiography movie resembled actual movement in terms of pulsation size. In a clinical study, dynamic 4-dimensional CT angiography showed 2-type motions: pulsation and anatomic positional changes of the cerebral artery. CONCLUSIONS: This newly developed 4-dimensional visualizing technique may deliver some clues to clarify the pathophysiology of cerebral aneurysms.
Authors: A E Vanrossomme; O F Eker; J-P Thiran; G P Courbebaisse; K Zouaoui Boudjeltia Journal: AJNR Am J Neuroradiol Date: 2015-04-30 Impact factor: 3.825
Authors: T Illies; D Säring; M Kinoshita; T Fujinaka; M Bester; J Fiehler; N Tomiyama; Y Watanabe Journal: AJNR Am J Neuroradiol Date: 2014-06-26 Impact factor: 3.825
Authors: Daniel Schetelig; Jan Sedlacik; Jens Fiehler; Andreas Frölich; Tobias Knopp; Thilo Sothmann; Jonathan Waschkewitz; René Werner Journal: Sci Rep Date: 2018-07-20 Impact factor: 4.379