Wavelet-Based Angiographic Reconstruction of Computed Tomography Perfusion Data

Kunz, Wolfgang G.; Schuler, Felix; Sommer, Wieland H.; Fabritius, Matthias P.; Havla, Lukas; Meinel, Felix G.; Reiser, Maximilian; Ertl‐Wagner, Birgit; Thierfelder, Kolja M.

doi:10.1097/rli.0000000000000337

Cited by 5 publications

(2 citation statements)

References 27 publications

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“…We used the angiographic reconstruction of waveletCTA from CT perfusion as described in detail and employed in previous studies. [24][25][26] Briefly, the principle of the algorithm is an analysis of each voxel's time attenuation curve with respect to its resemblance to the shape of a generic contrast bolus time attenuation curve. The wavelet transform then translates this resemblance into a power spectrum, of which the maximal values are interpreted as the angiographic signal intensity.…”

Section: Ct Examination Protocol Image Post-processing and Wavelet Tmentioning

confidence: 99%

Effect of stroke thrombolysis predicted by distal vessel occlusion detection

et al. 2018

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Section: Ct Examination Protocol Image Post-processing and Wavelet Tmentioning

confidence: 99%

Effect of stroke thrombolysis predicted by distal vessel occlusion detection

et al. 2018

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“…Brain CT is advantageous as it enables the presence of hemorrhaging to be evaluated in a patient, unlike other examination techniques ( 48 ). It may also be used to identify venous hypertension and sinus thrombosis ( 49 ). Flat panel CT analysis and three-dimensional angiographic reconstructions are particularly useful for increasing understanding of the complex anatomy and relationships of intracranial MDAVFs ( 50 ).…”

Section: Imaging Examinationsmentioning

confidence: 99%

Progress in research on intracranial multipleï¿½duralï¿½arteriovenous fistulas (Review)

Guo

Zhao

et al. 2017

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Intracranial multiple dural arteriovenous fistulas (MDAVFs) are rare lesions that are difficult to treat. The key factors involved in the development of MDAVFs remain unknown. At present, the majority of reports on intracranial MDAVFs are confined to case reports and small case series, and thus understanding of MDAVFs is limited. The current review assesses the available literature to date with the aim of reviewing the progress in research on intracranial MDAVFs. Intracranial MDAVFs may be divided into two types: Synchronous and metachronous. While the exact pathogenesis of MDAVFs is unknown, a number of possible mechanisms are considered relevant. The first is that MDAVFs develop following recanalization of a large sinus thrombosis that involves several sinuses. The second possibility is that a pre-existing DAVF may induce sinus thrombosis or venous hypertension, resulting in a new MDAVF. The third is that MDAVFs are caused by increased angiogenic activity, which may induce the development of MDAVFs. Intracranial MDAVFs have a malignant clinical course, and their symptoms generally rapidly progress following onset. It is therefore important to identify intracranial MDAVFs at an early stage. A number of imaging technologies, including computed tomography (CT), magnetic resonance imaging (MRI), digital subtraction angiography (DSA) and single-photon emission computed tomography (SPECT), may be used to detect MDAVFs. Of these, CT and MRI provide information on brain morphology, SPECT provides brain blood flow information, and DSA is the gold standard that may be used to identify angioarchitecture and hemodynamics. MDAVFs require timely and aggressive treatment, which may include endovascular embolization, surgical resection, radiosurgery and conservative treatment, and in some cases, combined treatments are required. Appropriate and aggressive treatment regimens can markedly improve neurological deficits and cognitive function in patients with MDAVFs.

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