Comparison of Conventional CT Images With Spectral CT Images (IMAGE)

American Roentgen Ray Society

Comparison of Conventional CT Images With Spectral CT Images

Caption

A-C, Conventional CT images obtained using parenchyma kernel (filter YB) and standard lung window setting (length, 600 HU; width, 1600 HU) (A), standard soft mediastinum kernel (filter B) and standard lung window setting (length, 600 HU; width, 1600 HU) (B), and standard soft mediastinum kernel (filter B) and narrow lung window setting (length, 700 HU; width, 240 HU) (C). D and E, Virtual monoenergetic images obtained using either standard soft mediastinum kernel (filter B), 53 keV (equivalent to 80 kVp), and narrow lung window setting (width, 700 HU; length, 240 HU) (D) or standard soft mediastinum kernel (filter B), 120 KeV (equivalent to 180 kVp), and narrow lung window setting (width, 700 HU; length, 240 HU) (E). F, Electron density image obtained using standard soft mediastinum kernel (filter B) and narrow window setting equivalent to that used to obtain image in C (length, 30%; width, 80% [percentage of electron density relative to water]). On electron density imaging, narrowing window did not impair image quality.

Credit

American Roentgen Ray Society (ARRS), American Journal of Roentgenology (AJR)

Usage Restrictions

Image may only be used with appropriate caption or credit.

License

Licensed content

Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.