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Updated: Jun 23, 2026

A Sectioning, Coring, and Image Processing Guide for High-Throughput Cortical Bone Sample Procurement and Analysis for Synchrotron Micro-CT

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Low-dose ultra-high-resolution temporal bone imaging using Sn100 kVp photon-counting CT: A comparative study with

Jiajing Tong¹, Xu Tian², Yu Huang²

¹Department of Radiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, No.1 Shuai Fu Yuan, Dong Cheng District, Beijing 100730, China.

European Journal of Radiology

|June 20, 2026

Summary

Photon-counting detector CT (PCD-CT) with tin filtration significantly reduces radiation dose by 53% for temporal bone imaging. This low-dose approach also enhances image quality compared to conventional CT, improving visualization of fine anatomical details.

Keywords:

Photon-counting detector CT Spectral shaping Temporal bone imaging Tin filtration

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Last Updated: Jun 23, 2026

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Published on: June 16, 2013

Area of Science:

Medical Imaging
Radiology
Computed Tomography

Background:

Conventional energy-integrating detector CT (EID-CT) is standard for temporal bone imaging.
Optimizing radiation dose while maintaining or improving image quality remains a key challenge.

Purpose of the Study:

To evaluate the clinical impact of low-dose photon-counting detector CT (PCD-CT) using 100 kVp tin filtration (Sn100 kVp).
To compare radiation dose and image quality of PCD-CT against conventional EID-CT for temporal bone imaging.

Main Methods:

Prospective enrollment of patients with suspected temporal bone lesions.
Comparison of PCD-CT scans (Sn100 kVp, 0.2 mm and 0.6 mm reconstructions) with retrospective EID-CT scans (120 kVp, 0.6 mm reconstruction).
Quantitative (attenuation, noise, SNR, CNR) and qualitative assessments of image quality and radiation dose.

Main Results:

PCD-CT achieved a 53% reduction in effective radiation dose compared to EID-CT (0.35 vs. 0.75 mSv).
PCD-CT demonstrated significantly lower image noise and higher contrast-to-noise ratio (CNR) for key structures.
Both PCD reconstructions were qualitatively preferred over EID-CT for anatomical visualization and overall image quality.

Conclusions:

Low-dose Sn100 kVp PCD-CT offers a significant dose reduction (53%) and improved image quality over conventional EID-CT.
Ultra-thin 0.2 mm reconstructions with PCD-CT leverage high spatial resolution for superior depiction of fine temporal bone details.