CT QA SOLUTIONS. Ensure Accurate Screening, Diagnosis and Monitoring

Transcription

1 CT QA SOLUTIONS Ensure Accurate Screening, Diagnosis and Monitoring ACCREDITATION ADVANCED CT IMAGE QUALITY QA AUTOMATIC EXPOSURE CONTROL CT CHARACTERIZATION MULTI-ENERGY CT CT PERFUSION QA

2 COMPLETE CT QA With more than 40 years of experience in the field, Gammex is your trusted partner for CT QA and compliance. From Automatic Exposure Control, to new innovations for Advanced CT image quality QA, we support your efforts to improve patient safety. 2 SUN NUCLEAR CORPORATION // sunnuclear.com

3 Mercury 4.0 Phantom Get ready for TG-233 Now it s easy to perform QA on advanced CT features that fall outside of your routine QA program. Like Automatic Exposure Control. And Iterative Reconstruction. Plus, you can revamp your traditional test with new metrics that enable robust and quantitative testing. The Mercury 4.0 Phantom is the latest iteration of the Mercury Phantom, designed by Dr. Ehsan Samei at Duke University. Specifications Material: Polyethylene Diameter: 16.0, 21.0, 26.0, 31.0, and 36.0 cm Length: 52.0 cm Contrast Materials: HE CT Solid Water, Bone, Polypropylene, 10 mg/ml Iodine, and Air Resolution Wedge: HE CT Solid Water Meets all advanced CT testing recommended by AAPM TG 233, including: Automatic Exposure Control Noise Power Spectrum Modulation Transfer Function Task Transfer Function Detectability (d ) Cone-beam artifacts Superior-Inferior resolution 5-tiered sections reflect canonical patient sizes Includes a stand with a handle and leveling feet, and a wheeled case Software Analysis: Included: Phantom includes a license for the Duke ImQuest software Wheeled Case and Stand SUN NUCLEAR CORPORATION // sunnuclear.com 3

4 CT Quality Assurance Solutions // CT ACR 464 Phantom & Advanced iq Modules CT ACR 464 Phantom Leverage a sophisticated design to comply with guidelines, and more Single phantom permits checking positioning and alignment, CT number accuracy, slice thickness, low contrast detectability and more Every phantom is constructed from Original Solid Water and clinically validated Designed to meet specifications of ACR for CT accreditation Optional automated software enables fast and simple reporting Specifications Material: The Original Solid Water (Zero HU Formulation) Diameter: 20.0 cm (7.9 in) Length: 16.0 cm (6.3 in) Weight: 5.3 kg (11.7 lbs) CT ACR 464 Phantom // Accessories CT ACR 464 Phantom Body Ring The CT ACR 464 Phantom can easily be inserted into the 464 Body Ring adapter to permit fast imaging QA for a better indication assessment of a scanner s performance with large patients. CT ACR 464 Phantom Extensions The CT ACR 464 Phantom Extensions plates accurately represent scatter effects from widebeam CT scanners, eliminating the need to add a water bolus or other material when measuring the Phantom. 4 SUN NUCLEAR CORPORATION // sunnuclear.com

5 Advanced iq Modules Modular CT ACR 464 Phantom Expansion Expand your CT ACR Phantom family with Advanced iq Modules. These modules enable comprehensive QA for your entire fleet of scanners, covering even the most challenging specifications of low-contrast detectability, high-contrast resolution, and slice sensitivity and geometry. Low Contrast Detectability Module Slice Sensitivity and Geometric Evaluation Module High-Contrast Resolution Module Expand your CT ACR Phantom family Low Contrast Detectability Module Three precisely formulated contrast levels test performance across a range of scanners and protocols Robust against noise with two objects at each size and contrast Tests full-slice and sub-slice detectability Fits perfectly with your 464 and/or extension plates High-Contrast Resolution Module Incorporates all resolutions of the CT ACR 464 Phantom Includes high resolutions up to 32 lp/cm Large bar patterns (1.5 cm x 1.0 cm x 4.0 cm) for ease of visualization and analysis Slice Sensitivity and Geometric Evaluation Module Measure slice thickness and slice sensitivity profile with an opposed pair of wire ramps and 2 opposed pairs of bead ramps Calculate Modulation Transfer Function with one-off vertical wire Check geopmetric accuracy with a set of 8 acrylic spheres Perform MTF measurements with BB s of two different sizes See individual product datasheets for more details. SUN NUCLEAR CORPORATION // sunnuclear.com 5

6 CT Quality Assurance Solutions // Multi-Energy CT Phantom Multi-Energy CT Phantom In collaboration with The University of Texas MD Anderson Cancer Center, Gammex has developed a phantom to ensure the performance and consistency of your Multi-Energy scans. Multi-Energy CT scanners have enabled improved clinical differentiations, such as distinguishing blood from calcification and calcification from iodinated contrast. 1,2 They can also create virtual mono-energetic images for clinical evaluation. However, the ability to achieve these benefits can greatly depend not only on one s equipment, but also on the protocols used. The Multi-Energy CT Phantom will enable robust evaluation of scanner performance. Test material discrimination using solid rods representing iodine, calcium, blood, adipose, and more Ensure the efficacy of clinical protocols for multi-energy analysis Verify the quantitative accuracy of multi-energy scans Compare the consistency and stability across different scanners Check for artifacts in an extended field-of-view Specifications In-plane Dimensions: Depth: Diameter of Removable Head Section: Interchangeable Inserts: Iodine Inserts with Variable Concentrations: Iodine Inserts with Variable Diameters: 40.0 cm (15.7 in) x 30.0 cm (11.8 in) 16.5 cm (6.3 in), up to 26.5 cm (10.2 in) with extension plates 20.0 cm (7.87 in) Material: HE CT Solid Water Calcium Inserts: Blood [iron] Inserts: Blood [iron] with Iodine Inserts: Additional Inserts: Weight: Case: 18 solid inserts plus 1 true water container 4 inserts with concentrations of 2.0, 5.0, 10.0, and 15.0 mg/ml 5.0 mg/ml concentration at diameters of 2.0, 5.0, and 10.0 mm Calcium concentrations of 50, 100, and 300 mg/ml Blood-mimicking material at relative electron densities of 1.03, 1.07, and 1.10 Blood-mimicking material plus iodine at 2.0 and 4.0 mg/ml High-Equivalency Brain, High- Equivalency Adipose, High- Equivalency CT Solid Water 15.5 kg (34.1 lbs) Wheeled case is included Stand: Stand is included 6 SUN NUCLEAR CORPORATION // sunnuclear.com

7 Automated Analysis The Multi-Energy CT Phantom supports automated analysis using patent-pending rod marker technology. Each insert is tagged with a pattern, making it uniquely identifiable in a CT scan. Upcoming software will leverage these identifiers to evaluate results quickly and with minimal user interaction. Ensure the accuracy you need Accuracy can vary based upon scanner hardware, the dual energy post-processing, and the mas used. Without an appropriate phantom, neither scanner accuracy nor variability are well known. Use of the calibrated high-z inserts enables such quantification. Additionally, protocols that appropriately balance patient dose with system performance can be identified. Average soft tissue monoenergetic HU for 50, 70, 110, and 140 kev reconstructions versus mas, averaged over a 1 year period. Protocols left of the red dashed line were insufficient to provide reliable HU values. Calculated vs Measured Mono-energitic HU Values for 10mg/mL Iodine 2mg/mL iodine rod quantification accuracy by mas for 10 fast-kvp switching Multi-Energy CT scanners. Accuracy averaged over a 1 year period. Enhance confidence in your virtual mono-energetic images Monochromatic HU numbers have been shown to vary between scanners. 3 Moreover, the performance of multi-energy algorithms can be compromised by insufficient mas. By utilizing a tissue-mimicking material that replicates expected HU dependencies from kev, the Multi-Energy CT Phantom lets you quantify these effects and define effective operating parameters. HU values of iodinated rod for mono-energetic reconstructions. Calculated values based on material compositions and NIST values (blue curve) vs HU values from mono-energetic reconstructions (red circles). Evaluate an extended field-of-view The ACR Quality Control Manual recommends checking for artifacts in a larger phantom on a weekly or monthly basis. The 40 cm extended field size of the Multi-Energy CT phantom enables this artifact check to be performed concurrently with other evaluations, efficiently fitting into your workflow. DATA PROVIDED BY UT MD ANDERSON 1 Nute JL, Jacobsen MC, Chandler A, Cody DD, Schellinghout D, Dual-Energy Computed Tomography for the Characterization of Intracranial Hemorrhage and Calcification: A Systematic Approach in a Phantom System. Invest Radiol. 2016; Jul 1 2 Knoss N, Hoffman B, Krauss B, et al. Dual energy computed tomography of lung nodules: Differentiation of iodine and calcium in artificial pulmonary nodules in vitro. Eur J Radiology. 2011; 80(3): E Mileto A, Barina A, Marin D, Stinnett S, Choudhury K, Wilson J, Nelson R Virtual monochromatic images from dual-energy multidetector CT: Variance in CT numbers from the same lesion between single-source projection-based and dual-source image-based implementations Radiology 2016 (in press) SUN NUCLEAR CORPORATION // sunnuclear.com 7

8 CT Quality Assurance Solutions // CTDI Phantoms & CT Perfusion Phantom Cone-Beam Electron Density Phantom Simplify your IVDT-related workflows Generating accurate IVDT calibrations for radiation therapy is easier then ever with the new Cone-Beam Electron Density Phantom from Gammex. From self-aligning rods designed for rapid setup, to a rolling case that protects the phantom s integrity, to high-equivalency materials that thoroughly test your modern wide-beam CT scanner, this phantom meets your clinical and workflow needs. Processing an IVDT is easier, too. Our patent-pending rod markers uniquely identify each material during the CT scan. This enables automated IVDT analysis, saving valuable time and reducing risk of error. Patent pending rod markers with unique identifiers are automatically located in a CT scan Automated software can process the IVDT and generate the density table Wide range of electron density values with rods designed to ICRU-44 and ICRP specifications Help ensure accurate calculations of dose distributions Specifications In-plane Dimensions: Depth: Diameter of Removable Head Section: Interchangeable Inserts: Optional inserts include: Optional Accessories: 40.0 cm (15.7 in) x 30.0 cm (11.8 in) 16.5 cm (6.3 in), up to 26.5 cm (10.2 in) with optional extension plates 20.0 cm (7.87 in) Material: HE Energy-Matched CT Solid Water Weight: Case: Stand: Standard Inserts Material 14 solid inserts plus 2 true water containers Aluminum, Stainless Steel, Titanium Extension plates Ion Chamber conversion rod 15.5 kg (34.1 lbs) Wheeled case is included Stand is included Physical Density (g/cm3) Electron Density Relative to Water 455 Lung LN Lung LN HE Gen Adipose HE Breast 50: HE CT Solid Water Inserts HE Brain HE Liver HE Inner Bone CB2 + 30% CaCO3: CB2 + 50% CaCO HE Cortical Bone True Water Inserts SUN NUCLEAR CORPORATION // sunnuclear.com

9 CTDI Phantoms Gain greater efficiency for a key part of your CT quality assurance program Measure absorbed dose and monitor scanner output faster than ever before. The Gammex Computed Tomography Dose Index (CTDI) Phantoms were designed for efficiency and can reduce setup and tear down time by 50%. The phantom is offered as a 2-piece or 3-piece nested configuration. Each configuration uses a tongue-in-groove design to quickly align all modules. Rods feature tips to ensure alignment and prevent falling. Each configuration includes a custom wheeled case. Gammex CTDI Phantoms were designed to meet specifications outlined by the Food and Drug Administration (FDA 21CFR ) and the International Electrotechnical Commission (IEC , IEC , and IEC ). Includes a custom wheeled case for safe storage and easy transportation Nested design and user friendly case saves 50% of your time compared to other models Tongue and groove design provides fast and precise module and insert placement Specifications Material: Adult Body: Adult Head/Pediatric Body : Pediatric Head (model 468-BHP only): Weight: Polymethyl methacrylate (PMMA / Acrylic) 32 cm diameter x 14.5 cm thick 16 cm diameter x 14.5 cm thick 10 cm diameter x 14.5 cm thick 13.9 kg (30.5 lbs) SUN NUCLEAR CORPORATION // sunnuclear.com 9

10 CT Quality Assurance Solutions // CT Perfusion Phantom & TG66 Solution CT Perfusion Phantom Finally, bring more confidence to your CT Perfusion QC CT brain perfusion studies can play a key role in evaluating many disorders, including stroke, and helping to identify patients who may benefit from thrombolytic therapies. Now there is an easy-touse tool to help ensure that your CT scanner and perfusion software are providing consistent and accurate results. In the CT Perfusion Phantom, rods of solid material slide through the imaging plane. The varying density of these arterial, venous, and brain-tissue rods generate calibrated time-attenuation curves (TAC). These TACs can be used to test single scanner reproducibility, inter-scanner consistency, and quantitative accuracy. A chamber port also allows simultaneous monitoring of dose. Whether for the initial validation of a CT Perfusion scanner, or for efficient QC testing against a reliable baseline, the CT Perfusion Phantom makes accurate testing easy. Solid materials for exceptional maintenance-free reproducibility CT Number (HU) Arterial Rod Venous Rod Brain Tissue Rod Time-Attenuation Curves (TAC) Time Vein TAC Artery TAC Brain TAC The artery and vein rods are designed to simulate blood and contrast perfusions. Specifications Dosimetry Port: Dimensions (L/W/H): Power: Weight: Standard CT Pencil Chambers up to 12.7 mm (0.5 in) diameter 55.5 x 25.4 x 30.5 cm (22 x 10 x 12 in) 8 AA batteries (included) 13.6 kg (29.9 lbs) Fast setup and easy to use with no wires Generate accurate TAC s for validation and routine QC of perfusion functionality 10 SUN NUCLEAR CORPORATION // sunnuclear.com

11 Task Group 66 Resources Kit All the tools you need for recommended testing When using a CT scanner for radiation therapy simulation, the AAPM recommends testing in accordance with Task Group 66 (TG 66). These tests provide confidence the alignments, electron density calibration, image quality, and imaging doses that contribute to a safe and effective treatment course. Whether you are looking for a complete TG 66 solution, or just a few phantoms to round out your QC program, Gammex can support your CT simulation QC needs. A typical TG 66 kit will contain: CT ACR 464 Phantom CTDI Phantoms CT Electron Density Phantom Laser Alignment Phantom (100a100) The Laser Alignment Phantom (100a100) Designed to provide maximum results and efficiency during the installation of Gammex lasers, this phantom is now available to end users for their routine QC needs. It meets all of the TG 66 specifications on laser alignments, from the daily verification of the CT imaging plane with the gantry lasers to the monthly checks of room lasers, distances, alignments, and orthogonality. Large 2D surfaces for precisely detecting all rotations (pitch, yaw, & roll) Thin paint lines for precise alignments Thin holes for precise localization within CT images Leveling feet Included mountable ruler Built-in bubble level SUN NUCLEAR CORPORATION // sunnuclear.com 11

12 Gammex is a leader in advanced CT test tools, and we have the expertise and technical knowledge to support your Quality Assurance programs. Call us or visit our website for details // sunnuclear.com Gammex Corporate Headquarters: 7600 Discovery Drive, Middleton, WI (800-GAMMEX-1) 2017 Sun Nuclear Corporation. All Rights Reserved. All data used is best available at time of publication. Data is subject to change without notice. CTQASolutions_D111017