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Segmentation with gray-scale connectedness can separate arteries and veins in MRA

, : Segmentation with gray-scale connectedness can separate arteries and veins in MRA. Journal of Magnetic Resonance Imaging 15(4): 438-445

To describe and present some preliminary results for a novel algorithm for segmentation with gray-scale connectedness as a means to separate arteries and veins in magnetic resonance angiography (MRA). The proposed algorithm, SeparaSeed, uses the gray-scale degree of connectedness as a tool to find the zone surrounding each vessel, in order to split the original volume into its different vessel components. In contrast to traditional segmentation methods, no gray-scale information is lost in the process. The segmentation is performed in one step, resulting in a partition of the initial volume into a chosen number of regions of interest (ROIs). Finally, visualization is achieved by projecting the 3D vessel trees to 2D using the common maximum intensity projection (MIP). The algorithm was tested in two MRA data sets of the vessels of the pelvis acquired after injection of an intravascular contrast agent and in one data set of the vessels of the neck with gadolinium. In all data sets, a large proportion of the venous signal was removed while preserving that of the arteries, thus improving visualization of the relevant vessels. Separation of arteries and veins is feasible with the proposed algorithm with a moderate amount of interaction.


PMID: 11948833

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Rufo, R., 2011: Using the Tele-ICU care delivery model to build organizational performance, part 1. The paradigm has shifted in care delivery models to effect improvements in both the quality and safety of patient care. Tele-Health integration is one example. By using mobile devices and the expertise of experienced clinicians in a remote locatio...

Schubert, M.; Driesner, T.; Gerya, T.V.; Ulmer, P., 2013: Mafic injection as a trigger for felsic magmatism – a numerical study. The origin of crustal-scale silicic magmatism remains a matter of debate, and notable uncertainty exists concerning the physical mechanisms that drive ascent and emplacement of felsic magmas in upper crustal regions. A 2D numerical model demonstra...

Zainea, V., 2012: Conventional curettage adenoidectomy versus endoscopic assisted adenoidectomy. Maedica 6(4): 328-329

Altschul, S.F.; Erickson, B.W., 1985: Significance of nucleotide sequence alignments: a method for random sequence permutation that preserves dinucleotide and codon usage. The similarity of two nucleotide sequences is often expressed in terms of evolutionary distance, a measure of the amount of change needed to transform one sequence into the other. Given two sequences with a small distance between them, can their s...

Aminov, P.G.; Lontshchakova, G.F., 2009: Sedimentation in river flows impacted by mine waste from sulfide ore-producing mines Karabash geotechnical system, Southern Urals. Metallogeniya Drevnikh i Sovremennykh Okeanov Materialy Nauchnoy Studencheskoy Shkoly 15: 319-324

Paton, L., 1926: The Trigeminal And Its Ocular Lesions. British Journal of Ophthalmology 10(6): 305-342

Badmus, J.A.; Ekpo, O.E.; Hussein, A.A.; Meyer, M.; Hiss, D.C., 2015: Antiproliferative and Apoptosis Induction Potential of the Methanolic Leaf Extract of Holarrhena floribunda (G. Don). Natural plant products with potent growth inhibition and apoptosis induction properties are extensively being investigated for their cancer chemopreventive potential. Holarrhena floribunda (HF) is used in a wide range of traditional medicine pract...

Taurian, O.E.; Lunell, S., 1987: Theoretical studies on solid ammonia. 1. Electron density. Ab initio MO-LCAO-SCF calculations of the electron density in solid ammonia have been carried out, using a 16-atom cluster surrounded by point charges as a model. A comparison with gaseous NH3 shows that major changes induced by condensation to th...

Bonar, R.A.; Heine, U.; Beard, D.; Beard, J.W., 1963: Virus of avian myeloblastorsis (BAI Strain A). XXIII. Morphology of virus and comparison with Strain R (erythroblastosis). Particles in preparations of Strain R avian tumour virus appeared to be of the same morphology as that of the BAI Strain A agent.

Sarov, I.; Larsen, A.M.; Heron, I.; Andersen, H.K., 1978: Stimulation of human lymphocytes by cytomegalovirions and dense bodies. Lymphocytes from healthy adult individuals were examined for their ability to incorporate thymidine in the presence of cytomegalovirus (CMV) and dense bodies. It was found that lymphocytes from donors with antibodies to CMV were stimulated to inco...