The Tin Filter cuts out lower energies to reduce dose and optimize image quality at the interface between soft tissue and air. This has direct benefits in lung and colon imaging, for example. Clinical experience also shows that Tin Filter technology reduces beam hardening artifacts and improves image quality in bony structures, making it also extremely useful in orthopedic examination.
- Optimize scans for early detection and vulnerable patients
- Provide high diagnostic confidence in lung scans1
- Enhance sensitive scans, e.g., for sinuses2 and pediatrics
- Improve spectral separation in Dual Energy scans3
Physics background
Illustration of 70 kVp and 120 kVp spectra without the use of a Tin Filter, and 100 kVp and 150 kVp spectra with spectral shaping by tin (Sn) filtration (Sn100 kV and Sn150 kV, respectively). The Tin Filter reduces radiation dose by blocking low-energy X-ray photons. (Figure 1)
Comparison of image noise at the same dose (CTDIvol) for various patient diameters. Starting from approximately 20 cm, spectra with tin filtration are more dose efficient than traditional spectra. (Figure 2)
Clinical Cases
Add significant benefits for your patients – from head to toe.
Chronic ankle pain.
Ankle CT scan with Tin Filter.
CTDIvol 3.34 mGy and DLP 39.0 mGy cmCourtesy of Medical University of Vienna, General Hospital AKH, Vienna, Austria
Publications
Full Reference | Topic | Body Part |
High-pitch low-dose abdominopelvic CT with tin-filtration technique for detecting urinary stones | Lower dose whilst improving image quality | Kidney stones |
Low-dose abdominal computed tomography for detection of urinary stone disease – Impact of additional spectral shaping of the X-ray beam on image quality and dose parameters | Lower dose whilst improving image quality | Kidney stones |
Approaches to ultra-low radiation dose coronary artery calcium scoring based on 3rd generation dual-source CT: A phantom study | Agatson equivalent CaScoring | Heart/CaScoring |
Ultra-low Dose and Ultra-fast Scan in a Patient with Dyspnea | Low dose, | Chest/Lung |
Ultra-low-dose CT with tin filtration for detection of solid and sub solid pulmonary nodules: a phantom study | Detection of sub-solid nodules is feasible with ultra-low-dose protocols | Chest/Lung |
Unenhanced third-generation dual-source chest CT using a tin filter for spectral shaping at 100 kVp | Lower dose whilst improving image quality | Chest/Lung |
Imaging the Parasinus Region with a Third-Generation Dual Source CT and the Effect of Tin Filtration on Image Quality and Dose | Low dose, | Sinus |
The Importance of Spectral Separation. An Assessment of Dual-Energy Spectral Separation for Quantitative Ability and Dose Efficiency | Dual Energy spectral seperation | All |
Very Low-Dose (0.15 mGy) Chest CT Protocols Using the COPDGene 2 Test Object and a Third-Generation Dual-Source CT Scanner With Corresponding Third-Generation Iterative Reconstruction Software | Very low dose levels (0.15 mGy) | Chest/Lung |
Ultra-low-Dose Chest Computed Tomography for Pulmonary Nodule Detection. First Performance Evaluation of Single Energy Scanning With Spectral Shaping | Lower dose whilst improving image quality | Chest/Lung |
Dual-Source Dual-Energy CT With Additional Tin Filtration: Dose and Image Quality Evaluation in Phantoms and In Vivo | Dual Energy spectral seperation | All |
Dual Energy CT of the Chest | Dual Energy | All |
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