ArticleDiagnostics (Basel, Switzerland)2023
Potential of Unenhanced Ultra-Low-Dose Abdominal Photon-Counting CT with Tin Filtration: A Cadaveric Study.
Article in Diagnostics (Basel, Switzerland), 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed, 7 citations in OpenAlex.
- Image Quality Assessment Methods in Clinical Diagnostic Imaging: Overview of Current Technical Perspectives.Diagnostics (Basel, Switzerland) · 2026Article
- Trans-Ulnar Single Incision Fasciotomy for Decompression of Forearm Compartment Syndrome: A Cadaveric Study.Orthopaedic surgery · 2025Article
- Assessing the stability of photon-counting CT: insights from a 2-year longitudinal study.European radiology · 2025Article
- Influence of spectral shaping and tube voltage modulation in ultralow-dose computed tomography of the abdomen.BMC medical imaging · 2024Article
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Authors and funding
10 authors at 2 institutions in 1 country.
Funding
Abstract
objectivesThis study investigated the feasibility and image quality of ultra-low-dose unenhanced abdominal CT using photon-counting detector technology and tin prefiltration. MATERIALS AND
methodsEmploying a first-generation photon-counting CT scanner, eight cadaveric specimens were examined both with tin prefiltration (Sn 100 kVp) and polychromatic (120 kVp) scan protocols matched for radiation dose at three different levels: standard-dose (3 mGy), low-dose (1 mGy) and ultra-low-dose (0.5 mGy). Image quality was evaluated quantitatively by means of contrast-to-noise-ratios (CNR) with regions of interest placed in the renal cortex and subcutaneous fat. Additionally, three independent radiologists performed subjective evaluation of image quality. The intraclass correlation coefficient was calculated as a measure of interrater reliability.
resultsIrrespective of scan mode, CNR in the renal cortex decreased with lower radiation dose. Despite similar mean energy of the applied x-ray spectrum, CNR was superior for Sn 100 kVp over 120 kVp at standard-dose (17.75 ± 3.51 vs. 14.13 ± 4.02), low-dose (13.99 ± 2.6 vs. 10.68 ± 2.17) and ultra-low-dose levels (8.88 ± 2.01 vs. 11.06 ± 1.74) (all
conclusionsPhoton-counting detector CT permits excellent image quality in unenhanced abdominal CT with very low radiation dose. 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.
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