Imaging optimisation process of human lung tissue using synchrotron radiation microcomputed tomography in PLS‐II

• Published in: X-ray spectrometry 2023-05, Vol.52 (3), p.110-120
• Main Authors: Lim, Jae‐Hong, Lee, Jeong Hyeon, Kim, Seob‐Gu, Lee, Sungho, Seo, Seung‐Jun, Seok, Yangki, Yi, Eunjue
• Format: Article
• Language: English
• Subjects: Algorithms; Attenuators; Cadmium; Data collection; Graphite; Image enhancement; lung; Lungs; Medical imaging; microtomography; Optimization; Phase retrieval; Pixels; Radiation; Radiation sources; Scintillation counters; Soft tissues; Synchrotron radiation; Synchrotrons; Tissues; Tomography; Tungsten
• ISSN: 0049-8246; 1097-4539
• DOI: 10.1002/xrs.3324

Synchrotron radiation microcomputed tomography (SR‐μCT) can provide non‐destructive three‐dimensional investigation for soft tissue with high resolution. The aim of this study is to evaluate technical improvements in microcomputed tomographic imaging of human lung tissue using a synchrotron radiation source at the 6C biomedical beamline. SR‐μCT images of excised human lung tissue (6 mm vertically and 10 mm horizontally sized) were explored at the 6C biomedical beamline in the Pohang accelerator laboratory (Pohang, Republic of Korea) using phase retrieval methods with a modified Bronnikov algorithm. Experimental data collection was performed with changes in the following conditions: the presence of a graphite attenuator, sample to detector distance, the presence of different scintillators and increasing pixel sizes. We identified that the resolution of lung tissue images was sufficiently enhanced when the graphite attenuator was not applied, 550 mm of sample to detector distance, with Cadmium tungsten (CdWO4) scintillator and twice binning of the pixel data and could be comparable with images from pathologic examination. Refinement of SR‐μCT techniques for soft tissue originating from the human body would advance the potential clinical application of synchrotron radiation in the near future.