Flat Panel Detector (FPD)
3D Digital Subtraction Angiography of Intracranial Aneurysms: Comparison of Flat Panel Detector with Conventional Image Intensifier TV System Using a Vascular Phantom
... Recently, a flat panel detector (FPD) of direct conversion type based on amorphous selenium (a-SE) became commercially available for angiography. Compared with the I.I.-TV system, this angiography ...
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Image Quality and Exposure Control for Over-the-Table X-ray Systems Using a Flat-panel Detector
... Abstract: Quality control (QC) is essential for ensuring that the X-ray images produced by fluoroscopy systems are of sufficient quality to provide adequate diagnostic information consistently with the least possible ...
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Feasibility of Flat Panel Detector CT in Perfusion Assessment of Brain Arteriovenous Malformations: Initial Clinical Experience
... flat panel detector CT in various pathologies have provoked some ...flat panel detector CT in brain arteriovenous malformations, which has not yet been ...flat panel detector CT, ...
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Flat Panel Detector Angiographic CT for Stent Assisted Coil Embolization of Broad Based Cerebral Aneurysms
... biplane, flat panel detector angiography system (Axiom Artis dBA; Siemens Medical Solutions, Forchheim, Ger- many) and commercially available software (DynaCT; Siemens Med- ical Solutions), whereas ...
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Comparison of ring artifact removal methods using flat panel detector based CT images
... Background: Ring artifacts are the concentric rings superimposed on the tomographic images often caused by the defective and insufficient calibrated detector elements as well as by the damaged scintillator ...
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Evaluation of a Metal Artifacts Reduction Algorithm Applied to Postinterventional Flat Panel Detector CT Imaging
... METHODS: Flat panel detector CT images were obtained from 59 patients immediately following cerebral endovascular procedures or as surveillance imaging for cerebral endovascular or surgical ...
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Applicability of Tableside Flat Panel Detector CT Parenchymal Cerebral Blood Volume Measurement in Neurovascular Interventions: Preliminary Clinical Experience
... Applicability of Tableside Flat Panel Detector CT Parenchymal Cerebral Blood Volume Measurement in Neurovascular Interventions: Preliminary Clinical Experience BACKGROUND AND PURPOSE: CB[r] ...
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Subarachnoid Hyperattenuation on Flat Panel Detector–Based Conebeam CT Immediately after Uneventful Coil Embolization of Unruptured Intracranial Aneurysms
... PURPOSE: Flat panel detector– based CBCT can provide CT-like images of the brain without transferring patients from the angiography suite to a conventional CT ...
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Reduction of Radiation Dose for Cerebral Angiography Using Flat Panel Detector of Direct Conversion Type: A Vascular Phantom Study
... delivered to a 15-cm-thick block phantom (MIX-DP phantom; Sangyo Kagaku, Okayama, Japan) using 3 dose modes (standard-dose mode of FPD system, low-dose mode of FPD system, and conven- tional mode of I.I.-TV system). Each ...
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Neuroradiologic Applications with Routine C arm Flat Panel Detector CT: Evaluation of Patient Dose Measurements
... The high-quality C-arm protocol resulted in a higher dose and should therefore be limited to special and acute cases when very good image quality comparable with standard head CT is need[r] ...
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Feasibility of Cerebral Blood Volume Mapping by Flat Panel Detector CT in the Angiography Suite: First Experience in Patients with Acute Middle Cerebral Artery Occlusions
... In humans, there is evidence that the perfusion parameter that best describes the infarct is the CBV.24-29 In acutely ischemic, but not yet infarcted, cerebrums, CBV values are usually n[r] ...
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Volume of Interest Imaging of the Inner Ear in a Human Temporal Bone Specimen Using a Robot Driven C Arm Flat Panel Detector CT System
... OV Scan. The initial OV scan with the standard isocenter and a wide fan and z-collimation (Fig 1) serves to image a large volume (eg, the complete human head). This scan is obtained with a low dose, which can be achieved ...
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Feasibility of Intravenous Flat Panel Detector CT Angiography for Intracranial Arterial Stenosis
... he stenosis of atherosclerotic major intracranial arteries is an important cause of ischemic stroke.1 Although cerebral angiography has been regarded as the criterion standard for depict[r] ...
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A Cone Beam Volume CT Using a 3D Angiography System with a Flat Panel Detector of Direct Conversion Type: Usefulness for Superselective Intra arterial Chemotherapy for Head and Neck Tumors
... a panel readout under the continuous rotation of the ...the detector was approximately 115 cm and that between the focal spot and isocenter was approximately 73 ...
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Experimental Study of Intracranial Hematoma Detection with Flat Panel Detector C Arm CT
... Limited detector width may produce artifact due to trun- cation if an object extends beyond the detector width in some (or even all) x-ray projections, though the 40-cm detector used here is usually ...
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Experimental Flat Panel High Spatial Resolution Volume CT of the Temporal Bone
... of view. These parameters were empirically derived to optimize image quality. The X-ray source was derived from a tungsten anode Performix 630 X-ray tube (GE Medical Systems, Mil- waukee, WI) with a user-selectable focal ...
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Temporal Bone Imaging: Comparison of Flat Panel Volume CT and Multisection CT
... with flat panel scanners, the filigree struc- tures of temporal bone were displayed more ...on flat panel devices were ...with flat panel detector scanners) are ...
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Transitioning to Digital Radiography Detectors
... conversion flat panel detector can be described as selenium coated thin film transistor (TFT) absorb or capture the incident X-ray and convert it directly to electrical ...the detector and ...
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An image guided small animal stereotactic radiotherapy system
... Small animal radiotherapy studies should be performed preferably on irradiators capable of focal tumor irradiation and healthy tissue sparing. In this study, an image guided small animal arc radiation treatment system ...
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Temperature Control of Flat-panel Airlift Photobioreactors for Microalgae Prduction – A Numerical Investigation
... A photobioreactor (PBR) is a reactor that utilizes light as energy source to allow a photosynthetic reaction to take place [2]. A PBR differs from an open pond in that the microalgae are enclosed in a transparent ...
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