The reliability of virtual non-contrast reconstructions of photon-counting detector CT scans in assessing abdominal organs

Dudás, Ibolyka [Dudás, Ibolyka (radiológia), szerző] Radiológia Tanszék (SE / AOK / K / OKK); Schultz, Leona; Benke, Márton [Benke, Márton (Orvosi tudományok), szerző] Sebészeti, Transzplantációs és Gasztroenterológ... (SE / AOK / K); Szücs, Ákos [Szűcs, Ákos (Sebészet), szerző] Sebészeti, Transzplantációs és Gasztroenterológ... (SE / AOK / K); Kaposi, Pál Novák [Kaposi, Pál (radiológia), szerző] Radiológia Tanszék (SE / AOK / K / OKK); Szijártó, Attila [Szijártó, Attila (Sebészet, kísérle...), szerző] Sebészeti, Transzplantációs és Gasztroenterológ... (SE / AOK / K); Maurovich-Horvat, Pál [Maurovich-Horvat, Pál (kardiológia), szerző] Radiológia Tanszék (SE / AOK / K / OKK); Budai, Bettina Katalin ✉ [Budai, Bettina Katalin (Radiológia), szerző] Radiológia Tanszék (SE / AOK / K / OKK)

Angol nyelvű Szakcikk (Folyóiratcikk) Tudományos
Megjelent: BMC MEDICAL IMAGING 1471-2342 1471-2342 24 (1) Paper: 237 , 18 p. 2024
  • SJR Scopus - Radiology, Nuclear Medicine and Imaging: Q2
Azonosítók
Spectral imaging of photon-counting detector CT (PCD-CT) scanners allows for generating virtual non-contrast (VNC) reconstruction. By analyzing 12 abdominal organs, we aimed to test the reliability of VNC reconstructions in preserving HU values compared to real unenhanced CT images.Our study included 34 patients with pancreatic cystic neoplasm (PCN). The VNC reconstructions were generated from unenhanced, arterial, portal, and venous phase PCD-CT scans using the Liver-VNC algorithm. The observed 11 abdominal organs were segmented by the TotalSegmentator algorithm, the PCNs were segmented manually. Average densities were extracted from unenhanced scans (HUunenhanced), postcontrast (HUpostcontrast) scans, and VNC reconstructions (HUVNC). The error was calculated as HUerror=HUVNC-HUunenhanced. Pearson's or Spearman's correlation was used to assess the association. Reproducibility was evaluated by intraclass correlation coefficients (ICC).Significant differences between HUunenhanced and HUVNC[unenhanced] were found in vertebrae, paraspinal muscles, liver, and spleen. HUVNC[unenhanced] showed a strong correlation with HUunenhanced in all organs except spleen (r = 0.45) and kidneys (r = 0.78 and 0.73). In all postcontrast phases, the HUVNC had strong correlations with HUunenhanced in all organs except the spleen and kidneys. The HUerror had significant correlations with HUunenhanced in the muscles and vertebrae; and with HUpostcontrast in the spleen, vertebrae, and paraspinal muscles in all postcontrast phases. All organs had at least one postcontrast VNC reconstruction that showed good-to-excellent agreement with HUunenhanced during ICC analysis except the vertebrae (ICC: 0.17), paraspinal muscles (ICC: 0.64-0.79), spleen (ICC: 0.21-0.47), and kidneys (ICC: 0.10-0.31).VNC reconstructions are reliable in at least one postcontrast phase for most organs, but further improvement is needed before VNC can be utilized to examine the spleen, kidneys, and vertebrae.
Hivatkozás stílusok: IEEEACMAPAChicagoHarvardCSLMásolásNyomtatás
2024-11-07 02:04