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76 protocols using allura xper fd20

1

Multimodal Imaging of Stenotic Vessel Phantoms

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The plaque phantom was scanned using four different 3T MRI platforms (Siemens Trio, Siemens Skyra, Philips Achieva, GE MR750 Discovery) at 8 different sites. The details of the MR scanner types and parameters are shown in Table 1. For each experiment, the two phantom models were imaged side-by-side using a 3D T2-weighted sequence and imaging planes were planned to provide cross-sectional thin-slice views centered on the stenosis of both phantoms. In addition, longitudinal slices through each phantom were acquired with a multi-slice T2-weighted sequence.
We also explored the utility of high-resolution cone-beam CT to provide a detailed benchmark of lumen geometry for HRMRI-based stenosis measurements. Three stenotic vessel wall models were constructed using the techniques described above, filled with Omnipaque 350, sealed with a 3-way stopcock, and embedded in water. Images were reconstructed at an isotropic resolution of 0.20 mm from VasoCT acquisitions14 obtained with a monoplane angiographic system (Allura Xper FD20, Philips Healthcare).
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2

Transarterial Chemoembolization for Liver Cancer

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A 5-Fr arterial catheter (Radiofocus; Terumo) was punctured into the femoral artery using the Seldinger technique under the guidance of digital subtraction angiography (Allura Xper FD20, Philips). A 5-Fr hepatic catheter (Radiofocus; Terumo) was then inserted into the hepatic artery through the abdominal aorta. The feeding arteries were incrementally injected with an emulsion composed of a chemotherapeutic agent (anthracycline or platinum, 10–50 mg/m2) combined with 5–20 ML of iodized oil (Lipiodol; Guerbet), followed by 350–560 µm gelatin sponge particles (Gelfoam; Alicon). The endpoint of TACE treatment was achieved when tumor staining diminished and Lipiodol filling appeared in the minute peritumoral portal vein branches. The dosages of chemotherapy agents and iodized oil were determined by the tumor's characteristics and the patient's liver function. Additional TACE procedures were performed as needed upon the detection of intrahepatic recurrence or metastasis. Treatment was discontinued in cases of TACE refractoriness [17] (link), severe complications, or withdrawal of consent.
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3

Quantitative Coronary Angiography Analysis

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Angiographic images were recorded at ≥ 15 frames/s by monoplane X-rays systems (Allura Xper FD20, Philips; Artist Q Zeego, Siemens; Innova IGS520, GE). Angiographic projections with minimal overlap and foreshortening at the corresponding target lesions were selected for offline analysis by two experienced and independent operators at an official and regularly audited corelab (Cardiovascular Imaging Core Laboratory of the Shanghai Jiao Tong University School of Medicine, Shanghai, China), using computerized edge-detection quantitative coronary angiography (QCA) software (AngioPlus Core, Pulse Medical Imaging Technology, Shanghai, China). All analysts were blinded to clinical, angiographic and functional data of the patients at all steps.
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4

Coronary Angiography for CMRA Evaluation

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A standard invasive coronary angiographic examination was performed on an Allura Xper FD20 catheterization system (Philips, Amsterdam, The Netherlands) within 2 weeks of the CMRA examination. An experienced cardiologist evaluated the presence of CCAs.
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5

Acute Ischemic Stroke Revascularization Protocol

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Intervention data including the use of combination therapy, duration of treatment (time from symptom onset to femoral artery accession), duration of intervention (time from femoral artery access to recanalization), devices used in each case (ACE 64 or ACE 68), and complications postintervention were obtained.
All procedures were performed under a DSA monoplane (Philips Allura Xper FD20). Procedures were performed with an 8F guide catheter with or without an intermediate catheter. For aspiration, ACE 64 or ACE 68 reperfusion catheters were advanced to the blood clot with the help of a microcatheter (Rebar 2.7F) and microguidewire (Transcend 0.014”). When an intracranial stent was required, antiplatelet therapy is used in the acute phase. If an intracranial stent was placed and there was no hemorrhagic complication on the study imaging, patients were started on dual antiplatelet therapy with aspirin 81 mg/day and clopidogrel 75 mg/day for 3 months and aspirin 81 mg/day for life.
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6

Angiographic Assessment of Stent Expansion

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The Allura Xper FD20 digital flat panel angiography system (Philips Medical Systems, Netherlands) was used in digital angiography and fluoroscopy. The operation process was as follow: first, put the balloon with two markers in the stent, without injecting the contrast media, step on the exposure for 2–3 s, and then inject the contrast media to expose for 2–3 s. Second, SBS automatically converts the continuous frame superposition collected by dynamic compensation into a digital movie, so that the stent can be autoradiographed. Finally, the image was automatically transferred to the workstation for offline SBS image analysis. Analysis indicators included the minimum stent diameter, the maximum stent diameter, and the mean and variance of the inner diameter of the stent. The criteria of an optimal stent expansion included (1) good attachment of the stent: the edge of the stent column was parallel to the vessel wall, and there was no gap between the stent and wall; (2) no sign of local underexpansion of the stent; and (3) the minimum stent diameter ≥ 2.5 mm.
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7

Calibration of Angiography Machines

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MT was performed either using a BP angiography machine (Philips AlluraXper FD 20/20; Philips, The Netherlands) or an SP machine (Philips AlluraXper FD 20; Philips, The Netherlands). Angiosuites were regularly calibrated and controlled according to national and international standards.
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8

Upgrade of TACE Imaging Platform Impact on Liver Cancer Patients

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This prospective, single-institution, two-arm study was conducted in compliance with the Health Insurance Portability and Accountability Act and was approved by the institutional review board. In January and February 2014, 26 consecutive patients with primary or secondary liver cancer treated with TACE at our institution using the C-arm system (Allura Xper FD20, Philips Healthcare, Best, the Netherlands) available at that time were included (control group). The imaging platform was then upgraded to the new platform (AlluraClarity) and a second cohort of 52 consecutive patients between March and June 2014 with liver cancer treated with TACE (study group) was included. Thus the final population included a total of 78 patients.
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9

Endovascular Aneurysm Repair: Detailed Protocol

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The procedures were performed in an angiography room with an Allura Xper FD20 instrument (Philips Medical Systems, Amsterdam, the Netherlands). All patients underwent ultrasonography-guided percutaneous femoral access with local anesthesia.
A pig-tail catheter (Super Torque MB, Cordis, Tipperary, Ireland), placed above the abdominal aneurysm, was used for digital subtraction angiography to identify aneurysm morphology. If the AAA extended into the iliac artery, internal iliac artery embolization was performed using an Interlock coil (Boston Scientific, Tipperary, Ireland) or an Amplatzer vascular plug (AGA Medical, Golden Valley, MN, USA). The main body and contralateral limb were deployed at a suitable place, and angiography was conducted to detect an endoleak or stent migration. The final angiography confirmed successful exclusion of an aneurysm, femoral access was removed, and Perclose Proglide was applied (Abbott, Green Oaks, IL, USA). When bleeding was absent, additional manual compression with gel pad compression was applied for 15 minutes and absolute bed rest was instructed for 8 hours.
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10

Pulmonary Arterial Blood Flow Imaging

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Pulmonary arterial blood flow imaging was obtained by pulmonary artery angiography (AlluraXper FD20 Philips). 5–7 ml of contrast was injected for the pulmonary angiography with hand injection with a syringe. The pulmonary circulation time was measured as previously described, by calculating the time taken for the contrast medium to reach from the initiation site of the pulmonary artery trunk to the left atrium through the pulmonary artery trunk and branches, pulmonary capillary, and pulmonary vein. The pulmonary circulation time was calculated for all of the survived rabbits at 120 min after the moment of successfully modeling, which was designed as the study end [6 (link)].
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