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Axiom artis zee angiograph

Manufactured by Siemens
Sourced in Germany

The Axiom Artis Zee is an angiograph, a type of medical imaging equipment used to visualize blood vessels and the flow of blood through them. It is designed to capture high-quality images of the cardiovascular system. The core function of the Axiom Artis Zee is to provide medical professionals with detailed information about the structure and function of a patient's blood vessels, which can be used for diagnosis and treatment planning.

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3 protocols using axiom artis zee angiograph

1

Multimodal Imaging of Supraaortic Stenosis

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CDUS scanning was performed with a high-resolution Toshiba Aplio PowerVision ultrasound machine (Toshiba Medical Systems Co., Ltd., Tokyo, Japan) equipped with a 4–11 MHz linear-array transducer and a 3.5–5.0 MHz convex transducer. The stenosis grade of the supraaortic arteries was based on the increase in the peak systolic velocity and the end-diastolic velocity, and the detection of steal syndrome was based on the flow direction in the vertebral arteries [33 (link),34 (link)].
CTA image acquisition was carried out with a 64-multi-detector-row CT system (Somatom 64, Siemens, Erlangen, Germany) using a routine imaging protocol. Biplanar and 3-dimensional reconstructions of the vessels were computed to characterize the anatomy of the aorta and its main branches [35 (link)].
MRI angiography was performed with a 1.5 T scanner (Magnetom Sonata Maestro Class, Erlangen, Germany) using a dedicated 8-element head coil [36 (link)].
A selective digital angiography of the index artery or arteries was performed using a Coroscop or Axiom Artis Zee angiograph (Siemens, Germany) with multiple angulated projections [33 (link),35 (link),36 (link)].
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2

Carotid Stenosis Quantitative Angiography

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After obtaining transfemoral or transradial access, unfractionated heparin (UFH) was routinely administered at the dose of 5000 IU. In case of cerebral protection device use or post-imaging proceeding to intervention, UFH dose was further titrated to achieve an activated clotting time of at least 250 s. Selective digital angiography of the index carotid artery was performed using Coroscop or Axiom Artis Zee angiograph (Siemens) in multiple (median 4) angulated projections to define the narrowest lumen diameter while minimizing foreshortening and avoiding an overlap of side branches. The view where the stenosis was tightest [18 (link), 19 (link)] was used for quantitative measurements (Quantcor QA v5.0, Siemens). Measurements (including RD, MLD, DS, RA, MLA, AS) were performed offline by agreement of two Angiographic Core Lab analysts and were then verified by an angiographic corelab supervisor.
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3

Carotid Artery Stenosis Quantification

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Selective digital angiography of the index carotid artery was performed with an Axiom Artis Zee angiograph (Siemens) in multiple (4-7, median 4) angulated projections to identify the narrowest lumen diameter while minimizing foreshortening and avoiding overlap of side branches. The view where the stenosis was tightest was used for quantitative measurements (Quantcor QA v5.0, Siemens). Stenosis severity measurements were performed by agreement of 2 angiographic core lab analysts and were verified by an angiographic corelab supervisor. The %DS was computed as [(RD-DS)/RD]*100% according to NASCET (North American Symptomatic Carotid Endarterectomy Trial) method [7 (link)], where DS is diameter stenosis and RD is reference diameter. In the projection showing the narrowest lumen diameter 3 measurements were performed and the average %DS was taken for further analysis.
The CTA and cQA analyses were blinded against each other. The study protocol was approved by the local Ethics Committee, and all patients provided written informed consent.
Treatment decisions were based on cQA-DS and guideline criteria other than stenosis severity.
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