Spect image quality improvement with astonish software

Philips qlab 10 advanced ultrasound quantification software. It also improves signaltonoise ratio, resulting in exceptional image quality, fast scans, and enhanced. Cardiomd iv enables cardiac imaging with improved workflow in a small footprint. Astonish reconstruction improves image quality and workflow the system delivers high resolution through astonish spect reconstruction technologies. Technetium99 m sulfur colloid singlephoton emission computed tomography.

Spect pcautoqa software model 49804 nm nuclear medicine analysis features. By reducing patient imaging time,a higher throughput can be achieved. A total of 54 patients received a full dose of tc99m sestamibi and underwent both fulltime and halftime imaging, and 46 patients received only half the standard dose and underwent fulltime and doubletime imaging. A study of spectct camera stability for quantitative. Spect reconstruction using matched filtering for improved image quality. Quality improvement statistical software for mac and windows. An electronically collimated gamma camera for single photon emission computed tomography. The advances in spect are directly tied to improving the quality and accuracy of. Quality control in medical imaging medical imaging instrumentation. Improved image quality in pinhole spect by accurate modeling. Spect single photon emission computed tomography david s. As recommended by the manufacturer, quality control procedures should be carefully performed and analyzed before the camera is used to acquire spect images. Imatest provides customers with software, charts and equipment to meet and exceed image quality testing standards.

Improved image quality in pinhole spect by accurate modeling of the point spread function in low magni. The main drivers for this have been a movement to digital imaging detectors to improve image quality and address radiation dose concerns, reimbursement and radiotracer supply issues. Find quality improvement stock images in hd and millions of other royaltyfree stock photos, illustrations and vectors in the shutterstock collection. With this in mind, research continues on the accuracyvalidation of spect ct image reconstruction, scatter correction, collimator response, and attenuation correction. Myocardial perfusion imaging image processing and software. A study of spectct camera stability for quantitative imaging. Pdf philips astonish image processing software phantom. Modification of spect acquisition time to yield adequate myocardial count density unique countbased spect acq consistent interpatient data integrity automated acq technique that ensures asnc quality standards at least 60 or 64 projections at 44, 000 counts at least 30 0r 32 projections at 20,000 counts. Recent advances in spect imaging morkel nuclear medicine. By reducing patient imaging time,a higher throughput can. A computeraided analysis method of spect brain images for. Halftime spect myocardial perfusion imaging with attenuation. Singlephoton emission computed tomography combined with xray computed tomography spectct improves diagnostic accuracy by allowing better localization and definition of scintigraphic findings.

Spect ct is advantageous as a fully quantitative tool since it can be performed with a substantially larger list of approved radiopharmaceuticals. Therefore, a computer aided analysis caa method is introduced to extract a changerate map crm as a parametric image for quantifying the changes of regional cerebral blood flow rcbf in longitudinal spect brain. As the first company to launch timeofflight technology, philips truflight timeofflight pet technology measures the actual time difference between the detection of coincident gamma rays for more. Automatic image quality improvement for videoconferencing. Jul 29, 2016 the purpose of this study was twofold. Together, over the past 15 years we have made netforum into a vibrant global community where more than 30,000 of you have been able to learn, share and grow. We will attempt to highlight selected areas of potential improvement of combined imaging technologies and. A smart investment in cardiac spect specifically designed for nuclear cardiology, the philips. Spectct is advantageous as a fully quantitative tool since it can be performed. Because astonish provides improvement in signaltonoise ratio,it can provide equivalent image quality even when spect scan times are shortened. It has long been realized that the performance of an imaging system must be. Jason wiener systems engineer varian medical systems.

In this chapter, we will look into image quality aspects of spect ct technology. The aim of this work was to investigate the capabilities of 197mhg for nuclear medicine imaging. Cardiac spect radiomics features repeatability and. Comparison of advanced iterative reconstruction methods. The translation of image processing techniques from the research arena to the clinic has been occurring, and several new commercial products for improving the quality of spect and planar images have recently become available. Advances in cardiac nuclear medicine imaging in terms of software and hardware such as optimal detector geometric arrays, linear count statistics, count rate response, and new reconstruction algorithms, provide further improvement in image quality 6, 7. Molecular imaging spect clinical solutions advanced molecular imaging petmr.

Conventional nuclear medicine images compress the 3dimensional 3d distributions of radiotracers into a 2dimensional image. Specialized in image quality testing and improvement. The molecules most commonly used for performing bone. Evaluation of a matched filter resolution recovery. Philips cardiomd iv philips healthcare pdf catalogs technical. Features philips proprietary xpand5 quantification tools to assist in. Quality improvement statistical software for mac and windows jmp statistical analysis software from sas is your answer for quality improvement and statistical process control spc projects. Jan 29, 2011 since the 1990s, hybrid imaging by means of software and hardware image fusion alike allows the intrinsic combination of functional and anatomical image information. The ingenuity tf petct also offers the power of astonish tf, the next evolution in timeofflight tof technology.

Using a cylindrical water phantom filled with measured amounts of 99mtc, factors were calculated to convert countscc to activitycps. Philips highlights the value of advanced molecular imaging at. The objective and quantitative analysis of longitudinal single photon emission computed tomography spect images are significant for the treatment monitoring of brain disorders. Nuclear imaging technology for both single photon emission computed tomography spect and positron emission tomography pet have made advancements in the past couple years. Radiomercury 197mhg and 197hg, henceforth referred to as 197mhg, is a promising theranostic radionuclide endowed with properties that allow diagnostic and therapeutic applications. A technologist can use several strategies to minimize patient movement. Dec 23, 2019 the corrections of photon attenuation, scatter, and depthdependent blurring improve image quality in myocardial perfusion singlephoton emission computed tomography spect imaging. Astonishing improvements in reconstruction algorithm. With fit and astonish, the system enables low patient xray dose levels, highresolution localization and highquality attenuation correction with the. We will place the focus on the spect part of the technology, starting from the point of view that a spect ct camera is used primarily as a spect camera that also acquires a ct image, registered to this spect image. Nuclear imaging moves toward digital detector technology. Recent advances in spect imaging journal of nuclear medicine.

Astonish provides improvement in signaltonoise ratio, allowing you to maintain high image quality even when spect scan times are shortened. Quantitative assessment is an essential tool in determining the proportion of liver to be reserved before lobectomy. Unsatisfactory illumination conditions may lead to underexposure or overexposure of the area of. On the other hand, advanced software reconstruction methods, especially. Advances in cardiac nuclear medicine imaging in terms of software and hardware such as optimal detector. Advances in cardiac processing software sciencedirect. Accurate reconstruction methods for spect are a prerequirement for absolute tracer quantification. Jmp offers outstanding capabilities for all of your quality improvement tasks and does so in an interactive and visual way. Corrective image reconstruction methods which produce reconstructed images with improved spatial resolution and decreased noise.

A patient study was undertaken to document the various causes of artifacts in order to pinpoint methods that will lead to an improvement in. Impact of iterative reconstruction with resolution. In videoconferencing, the image quality is significantly affected by the illumination condition. Philips demonstrates innovations in nuclear medicine. The corrections of photon attenuation, scatter, and depthdependent blurring improve image quality in myocardial perfusion singlephoton emission computed tomography spect. Filtering in spect image reconstruction europe pmc. Astonish tf has up to 30% improved contrast over nontof and offers. Image reconstruction and preliminary experimental measurements. Thousands of new, high quality pictures added every day. Evolution for bone, philips astonish and siemens flash3d software. Philips timeofflight tof technology improves contrast by up to 30% compared to nontof systems. Fit builds on the value of astonish spect reconstruction, iterative technology that has been proven in practice to improve image quality and reduce dose. Next, a short introduction about general medical image quality will be given, which will serve as the reference framework for the further discussion about spectct image quality. Trad itio nall y, t he m anuf actu rer s recom men dations, e.

Spectct arthrography the british journal of radiology. Image quality excellent or good fbp fta hta stress perfusion image quality rest perfusion image quality 0% 60% 50% 40% 30% 20%. Imatest gives companies the right tools to test their image capture technology and. It improves signaltonoise ratio, resulting in exceptional image quality, higher speed. Prospective multicenter evaluation of rapid, gated spect. Thousands of new, highquality pictures added every day. The first step in spectct arthrography is the intravenous injection of approximately 500600 mbq 16 mci of 99m tc phosphonates. Astonish reconstruction and cardiac quantification software to deliver. Impact of iterative reconstruction with resolution recovery in. Optimizing radiation dose and imaging time with conventional.

To evaluate the stability of the spectct scanner and determine a calibration factor for quantitative spectct, the measured activity concentration of a waterfilled phantom. Spect image quality improvement with astonish software. Philips cardiomd iv dependable performance, lasting value. Since the 1990s, hybrid imaging by means of software and hardware image fusion alike allows the intrinsic combination of functional and anatomical image information. Exact activity numbers can be extracted from spect images by use of iterative reconstruction with. Tomography filtered back projection iterative reconstruction quality control 3. Astonish tf is designed to enhance image quality by reducing image artifacts to help clinicians detect and locate lesions, increase diagnostic confidence and preserve healthy tissue during treatment. Vendorsupplied qualityassurance software was used to ensure the ct scan was registered with both ht and ft spect images. The quality of spect images are degraded by several factors such as noise because of the limited number of counts, attenuation, or scatter of photons. Ingenuity tf petct leverages philips astonish tf technology for enhanced image contrast, resolution, and quality. Brightview xct allows for low patient dose levels, highresolution localization, and highquality. Significant improvement in image quality in a multicenter study of 187 patients. Single photon emission computed tomography spect imaging is widely implemented in nuclear medicine as its clinical role in the diagnosis and management of several diseases is, many times, very helpful e. Philips brightview xct, a spectct system designed entirely for nuclear medicine, has ties to astonish.

Comparison of advanced iterative reconstruction methods for. We have developed an analytical model for spect image generation, including attenuation, scatter and reconstruction by. Lowdose technology added to spectct scanner imaging. Astonish spect iterative reconstruction with resolution recover. Results highspeed spect sss and srs correlated linearly with conventional spect respective scores r 0. To evaluate the stability of the spectct scanner and determine a calibration factor for quantitative spectct, the measured activity concentration of a waterfilled phantom injected with a. Projections and reconstructed matrix size for all scans were 64. Jun 15, 2018 nuclear imaging technology for both single photon emission computed tomography spect and positron emission tomography pet have made advancements in the past couple years. Brightview xct astonish image reconstruction technology provides significant spatial resolution improvement in cardiac spect studies compared to spect studies using filtered back projection. Spect is a nuclear medical tomographic imaging technique. Obtaining quality spect data is a vital compo nent of the total spect procedure. Exact activity numbers can be extracted from spect images by use of iterative reconstruction with appropriate corrections for attenuation, scatter and detector resolution.

Fast imaging, enhanced confidence advanced astonish reconstruction provides. Quality control in cardiac nuclear medicine and cardiac ct. Feldkamp midamerica cardiology associates, pc, kansas city, missouri objective. Spect and spectct manufacturers are launching hardware and software. However, the combined acquisition of functional and anatomical images can substantially increase radiation exposure to patients, particularly when using a hybrid system with diagnostic ct. Projections and reconstructed matrix size for all scans. Efficient workflow, effective collaboration intellispace portal, a best in klas awardwinning solution, provides tools and a comprehensive analysis and processing environment for cardiac muga and cardiac. The phantom and clinical patient images were acquired with two. Therefore measurements were performed by using a philips brightview spect camera. Brightview xct allows for low patient dose levels, highresolution localization, and highquality attenuation correctionall with the potential for fewer artifacts and shorter exam times, according to the company.

Another area where considerable progress has been made is in the quantitative evaluation of spect image quality. Nowadays singlephoton emission computed tomography spect is widely used in nuclear medical imaging. Tc99m sulfur colloid spectct and assessment of functional. Philips healthcare redefines hybrid imaging to simplify. Advanced astonish reconstruction provides halftime cardiac imaging that improves diagnostic confidence, workflow efficiency, and patient experience. You should be able to view your picker image at this point. Go to image rotateflip horizontally so that converted images will be in the same orientation as the spect template.

Philips launches cardiomd iv cardiac spect solution at asnc. Astonish tf, the standard imaging technology on philips timeofflight tof systems. A specially designed resolution phantom containing three 99m tc lines sources and the nema nu2 image quality phantom were acquired on three different spectct systems general electrics. Cardiarc also has two beta sites examining how a reduction in pixel size could enhance image quality. Technetium99 m sulfur colloid singlephoton emission computed tomography tc99 m sc spectct can help in the quantitative assessment of functioning liver tissues and percentage of liver reserve before segmentectomy and lobectomy matesan et al.

Single photon emission computed tomography spect imaging is widely implemented in nuclear medicine as its clinical role in the diagnosis and management of several diseases is, many times, very. Impact of iterative reconstruction with resolution recovery. Philips astonish image enhancement tool uses an ad. The aims of this study were to assess improvement in image quality using the software and to evaluate the potential of performing reduced time acquisitions for bone and parathyroid spect applications. Dear netforum user, at philips, we believe in putting trust, transparency and control at the heart of our customer experience. B astonish method applied to myocardial perfusion spect. Patient movement is another source of poor image quality, especially in brain imaging. The shorter scan times may also mean more comfort for the patients and less motioninduced artifacts.