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A Sectioning, Coring, and Image Processing Guide for High-Throughput Cortical Bone Sample Procurement and Analysis for Synchrotron Micro-CT
Published on: June 12, 2020
Petrosal bone: coronal reconstructions from axial spiral CT data obtained with 0.5-mm collimation can replace direct
H W Venema1, S S Phoa, P G Mirck
1Department of Radiology, Academic Medical Center, University of Amsterdam, The Netherlands. h.w.venema@amc.uva.nl
Radiology
|November 7, 1999
Summary
Coronal multiplanar reconstruction (MPR) images from axial spiral CT scans can replace direct coronal CT scans for petrosal bone imaging. Tricubically interpolated MPR images offer comparable diagnostic quality, especially with 0.5-mm collimation.
Area of Science:
- Radiology
- Medical Imaging
Background:
- Direct coronal computed tomographic (CT) scans of the petrosal bone are standard for diagnosis.
- Evaluating alternative imaging techniques can improve efficiency and diagnostic quality.
Purpose of the Study:
- To determine if coronal multiplanar reconstruction (MPR) images derived from axial spiral CT data can substitute for direct coronal CT scans of the petrosal bone.
- To compare the diagnostic quality of MPR images with direct coronal CT scans at varying collimations and mAs settings.
Main Methods:
- Five observers assessed image quality differences between direct coronal CT scans (0.5-mm and 1.0-mm collimation) and MPR images of 24 petrosal bones.
- MPR images were generated using trilinear and tricubic interpolation from axial spiral CT data (0.5-mm collimation).
- Image resolution was quantified using the three-dimensional point spread function.
Main Results:
- Observers consistently preferred tricubically interpolated MPR images over trilinearly interpolated ones.
- Subjective image quality differences between direct coronal scans and tricubically interpolated MPR images were minimal.
- Direct coronal scans with the highest quality (0.5-mm collimation, 465 mAs) were marginally preferred over MPR; otherwise, MPR images were equal or preferred.
Conclusions:
- Coronal MPR images reconstructed from axial spiral CT data (0.5-mm collimation) are a viable replacement for direct coronal sequential CT scans of the petrosal bone.
- This finding supports the use of MPR for efficient and effective petrosal bone imaging.
