Biography mct specifications meaning
Biograph mCTClearly going beyond
Innovative technology for better care
Accelerate your potential with technologies that go beyond the standard level of imaging. Serve more patients and grow your business with enhanced technological and clinical efficiencies that empower you to access more steps across the entire patient journey. With intelligent imaging and the ability to accommodate all patients, Biograph mCT moves the patient and user experience to a new level of care.
The high 78-mm volumetric resolution and 4 x 4-mm LSO crystal elements of Biograph mCT bring enhanced detectability with accurate and reproducible quantification. True TOF capabilities and innovative technologies such as FlowMotion™ help you lead the way in technological and medical advancement. Powerful CT solutions ranging from 40 to 128 slices with low-dose technologies give you the flexibility to go beyond standard care.
Biograph mCT supports the clinical development of PET/CT imaging in oncology, cardiology, and neurology. Delivering customizable solutions for diagnostics, theranostics, radiation therapy planning, and research imaging, Biograph mCT lets you redefine clinical decision-making.
The large bore and high weight capacity of Biograph mCT combined with intelligent imaging capabilities let you deliver a next-level patient and user experience. Accommodate all patients and procedures for both PET and CT with optimized patient positioning and an easy-to-use interface. AI-powered features enable automation for faster, more reproducible workflows—giving you more time with your patients.
The high 78-mm volumetric resolution and 4 x 4-mm LSO crystal elements of Biograph mCT bring enhanced detectability with accurate and reproducible quantification. True TOF capabilities and innovative technologies such as FlowMotion™ help you lead the way in technological and medical advancement. Powerful CT solutions ranging from 40 to 128 slices with low-dose tec
Micro-Computed Tomography beamline (MCT)
Capability summary and techniques
The MCT beamline complements the existing X-ray imaging and tomography capabilities provided by the Imaging and Medical Beamline (IMBL), and targets applications requiring higher (sub-micron) spatial resolution and involving smaller samples. MCT is a bending-magnet beamline, operating with X-rays in the energy range of 8 to 40 keV. Monochromatic X-rays is selected using a double-multilayer monochromator (DMM). The DMM operates with a relatively wide energy bandpass (ΔE/E~3%) in order to increase the integrated flux at the sample position. The DMM can also be removed from the X-ray beam path, enabling experiments with a high flux, filtered white beam, for studies that require high-speed data acquisition. The photon-delivery system (PDS) has a single-(vertical) bounce mirror (VBM), capable of suppressing harmonic contamination in low-energy monochromatic beams and providing the means to shape the spectrum of filtered white beams on the high-energy side. The beamline is greatly benefit from novel phase-contrast modalities (such as propagation-based, grating-based and speckle) in addition to conventional absorption-contrast computed tomography. The beamline will be equipped with a robotic stage for high-throughput automated sample exchange. A higher-resolution (nano-CT) configuration based on the use of a Fresnel zone plate system will also be available.
The wide variety of experimental configurations, designed in response to the requirements of a diverse user community can be achieved using three different X-ray imaging detector systems. These will address key issues such as spatial resolution, contrast, field-of-view, frame rate and white-beam compatibility.
In addition to standard “step-and-shoot” and “on-the-fly” modalities for absorption- and phase-contrast X-ray tomography, MCT will provide capabilities for tomosynthesis, laminography, and helical
Abstract
Background
The purpose of the study is to evaluate the physical performance of a Biograph mCT Flow 64-4R PET/CT system (Siemens Healthcare, Germany) and to compare clinical image quality in step-and-shoot (SS) and continuous table motion (CTM) acquisitions.
Methods
The spatial resolution, sensitivity, count rate curves, and Image Quality (IQ) parameters following the National Electrical Manufactures Association (NEMA) NU2-2012 standard were evaluated. For resolution measurements, an F point source inside a glass capillary tube was used. Sensitivity measurements were based on a 70-cm-long polyethylene tube, filled with 4.5 MBq of FDG. Scatter fraction and count rates were measured using a 70-cm-long polyethylene cylinder with a diameter of 20 cm and a line source (1.04 GBq of FDG) inserted axially into the cylinder 4.5 cm off-centered. A NEMA IQ phantom containing six spheres (10- to 37-mm diameter) was used for the evaluation of the image quality. First, a single-bed scan was acquired (NEMA standard), followed by a two-bed scan (4 min each) of the IQ phantom with the image plane containing the spheres centered in the overlap region of the two bed positions. In addition, a scan of the same region in CTM mode was performed with a table speed of 0.6 mm/s. Furthermore, two patient scans were performed in CTM and SS mode. Image contrasts and patient images were compared between SS and CTM acquisitions.
Results
Full Width Half Maximum (FWHM) of the spatial resolution ranged from 4.3 to 7.8 mm (radial distance 1 to 20 cm). The measured sensitivity was 9.6 kcps/MBq, both at the center of the FOV and 10 cm off-center. The measured noise equivalent count rate (NECR) peak was 185 kcps at 29.0 kBq/ml. The scatter fraction was 33.5 %. Image contrast recovery values (sphere-to-background of 8:1) were between 42 % (10-mm sphere) to 79 % (37-mm sphere). The background variability was between 2.1 and 5.3 % (SS) and between 2.4 and 6.9 % (CTM). No significant di .