An anthropomorphic phantom with insertions of aluminum and titanium rods was scanned using the standard dose head (SDH) and high-quality head (HQH) CBCT protocols with no tin filters as well as 0. ...

Computed tomography (CT) scanners have the ability to improve image quality and reduce the radiation dose to patients during CT scans through the addition of a spectral shaping filter called a tin ...

The additional built-in tin filter (TF) is one of such tools: It absorbs low-energy photons, which tend to increase the dose to the patient without contributing to image …

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 …

Katsuhiro Ichikawa, Yusuke Morioka, Add to Mendeley. https://doi/10.1016/j.ejmp.2022.05.006 Get rights and content. Highlights. •. Dose …

CT with tin filtration resulted in 28% and 66% reduction in CTDIvol compared with CT performed with routine low-dose and standard-dose protocols (p < 0.05). According-ly, it …

When a tin-filter is used, the low-energy spectrum is absorbed and the X-ray quality is improved. Therefore, the exposure dose decreases. Therefore, we assume that if the exposure dose is measured, it will increase in the following order: tin-filter image with a low-dose protocol based on high pitch, tin-filter image with a low-dose protocol ...

Background: We aimed to compared radiation exposure and image quality between tin-filter-based and standard dose thoraco-abdominal computed tomography angiography (TACTA) protocols, aiming to address a gap in the existing literature. Methods: In this retrospective study, ninety consecu …

DOI: 10.1016/j.acra.2013.01.010 Corpus ID: 45565634; Tin-filter enhanced dual-energy-CT: image quality and accuracy of CT numbers in virtual noncontrast imaging. @article{Kaufmann2013TinfilterED, title={Tin-filter enhanced dual-energy-CT: image quality and accuracy of CT numbers in virtual noncontrast imaging.}, author={Sascha …

The qualitative image quality assessment scores given by both readers were significantly higher for the tin filter groups than for the routine-dose groups (group A vs. group C, P=0.03; group B vs. group D, P=0.188; Table 3).

The tin filter, which is added to the standard aluminum bowtie filter between the X-ray tube and the patient, absorbs low-energy photons that contribute less to the image quality, but increase the ...

An additional tin filter (thickness = 0.4 mm) could be enabled for any of the four acquisition modes. We recently reported 30 using tin filter, ... Since the image quality for the temporal bone images was only qualitatively assessed in two patients, no formal statistical analysis was performed on this cohort. RESULTS.

Purpose: To evaluate the possibility of lowering radiation dose from a localizer radiograph (LR) using a tin spectral shaping filter and to investigate the effect of this adaptation on the radiation dose and image quality of subsequent computed tomography (CT) examination. Methods: The study utilized a set of semianthropomorphic abdomen phantoms, …

The cancer risk associated with high amounts of radiation dose during a computed tomography (CT) scan is a serious concern [1]. Accordingly, CT vendors are constantly developing tools and methods for reducing the dose required for CT acquisition while mitigating its influence on image quality. The additional built-in tin filter (TF) is one …

This study investigated the radiation dose, image quality, and diagnostic performance of tin filter-based spectral shaping chest–abdominal–pelvic (CAP) CT for …

Photon-counting detector CT permits excellent image quality in unenhanced abdominal CT with very low radiation dose, and employment of tin prefiltration at 100 kVp instead of polychromatic imaging at 120 kVP increases the image quality even further in the ultra-low-dose range of 0.5 mGy.

Tin filtration in CT is a separate technique that pre-filters X-ray beams from the CT tube by absorbing low-energy photons. Spectrally shaping the x-ray beam removes photons not normally contributing to image generation. This simultaneously leads to reduction of the radiation dose and increase in mean photon energy.

The other tin filter protocols followed in descending order of increasing tube current, succeeded by the 100 kV protocols without tin filters. ... Nevertheless, in our opinion, image noise is a more reliable parameter for assessing image quality when comparing tin with non-tin filter scans, especially for high contrast examinations.

CT with tin filtration resulted in 28% and 66% reduction in CTDI vol compared with CT performed with routine low-dose and standard-dose protocols ( p < 0.05). Accordingly, it also led to 24% and 55% …

To assess image quality, ROIs in soft tissue and iodine-enhanced regions were evaluated using our own C++ function. ... Without tin filter tube voltages between 70 and 150 kV are available. Additionally 100 and 150 kV are available with tin filter. The dashed line is the corresponding linear fit. 3.3 Measurements. Table 3 lists the measured …

The purpose of this study was to assess the impact of a tin filter on the image quality of ultra-low dose (ULD) chest computed tomography (CT) on three different CT systems. An image quality phantom was scanned on three CT systems including two split-filter dual-energy CT (SFCT-1 and SFCT-2) scanners and one dual-source CT scanner …

This study assessed the impact of a tin filter on the image quality of ULD chest scans according to the kVp available on each of the three CT systems. We found that for SFCT-1 and DSCT, where the tin filter can be used for two tube voltages, using the tin filter reduced image noise and improved the detectability of simulated chest lesions ...

age quality and diagnostic performance [10, 12]. A potential benefit of lowering tube volt-age is better image contrast of radiopaque structures, such as calcium stones [10]. A newer method for optimizing CT ra-diation dose is spectral shaping of the en-ergy spectrum. In this technique, a tin filter placed in front of the scanner x-ray source

In this study, we attempted to assess the image quality of VNC images acquired with a second-generation, dual-source CT scanner with tube potentials of 140 and 100 kV and an additional tin filter. VNC images could be generated in all patients with a complete inclusion of the relevant abdominal organs.

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 ...

Filters are metal sheets placed in the x-ray beam between the window and the patient that are used to attenuate the low-energy (soft) x-ray photons from the spectrum.Filtering is the removal of these low energy x-rays from the beam spectrum which would otherwise not contribute to image quality but would add to patient dose and scatter.

In terms of metal artefact reduction, tin filtration combined with iMAR showed the lowest CT number reduction (116.62±103.48 HU) and metal diameter blurring (0.85±0.30) among the protocols. The effective radiation dose in the tin filter groups was 73.2% lower than that in the routine-dose groups. The complication rate and diagnostic ...

Tin filter compared to low kV protocols - optimizing sinonasal imaging in computed tomography | PLOS ONE. Open Access. Peer-reviewed. Research Article. Tin filter compared to low kV protocols - …

The spectral shaping technique, which involves adding a tin filter (TF) on the scanner x-ray tube, is a powerful method for reducing radiation dose. TF minimizes the bulk of lower-energy photons, which are less relevant to image quality but increase the radiation exposure of patients [22,23]. In addition, TF reduces the effect of beam hardening ...

Purpose: The purpose of this study was to assess the impact of a tin filter on the image quality of ultra-low dose (ULD) chest computed tomography (CT) on three different CT systems. Materials and methods: An image quality phantom was scanned on three CT systems including two split-filter dual-energy CT (SFCT-1 and SFCT-2) scanners and …

This study aims streak artifacts reduction in cone-beam computed tomography (CBCT) by mounting tin filters at the Trilogy system. An anthropomorphic phantom with insertions of aluminum and titanium rods was scanned using the standard dose head (SDH) and high-quality head (HQH) CBCT protocols with no tin filters as well as 0.2 mm, 0.4 mm, and …

The use of TF increases the X-ray beam quality and improves the image quality characteristics in phantom images, thus appearing as a promising tool for reducing dose and/or improving the image quality of ULD protocols. ... The purpose of this study was to assess the impact of tin filter (TF) on X-ray beam quality, image quality and radiation ...

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 …