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01-06-2018 | Oncology

Whole-body ultra-low dose CT using spectral shaping for detection of osteolytic lesion in multiple myeloma

Authors: Saravanabavaan Suntharalingam, Christian Mikat, Axel Wetter, Nika Guberina, Ahmed Salem, Philipp Heil, Michael Forsting, Kai Nassenstein

Published in: European Radiology | Issue 6/2018

Abstract

Objectives

The aim of this study was to investigate the radiation dose and image quality of a whole-body low-dose CT (WBLDCT) using spectral shaping at 100 kV (Sn 100 kV) for the assessment of osteolytic lesions in patients with multiple myeloma.

Methods

Thirty consecutive patients were retrospectively selected, who underwent a WBLDCT on a third-generation dual-source CT (DSCT) (Sn 100 kV, ref. mAs: 130). They were matched with patients, who were examined on a second-generation DSCT with a standard low-dose protocol (100 kV, ref. mAs: 111). Objective and subjective image quality, radiation exposure as well as the frequency of osteolytic lesions were evaluated.

Results

All scans were of diagnostic image quality. Subjective overall image quality was significantly higher in the study group (p = 0.0003). Objective image analysis revealed that signal intensities, signal-to-noise ratio and contrast-to-noise ratio of the bony structures were equal or significantly higher in the control group. There was no significant difference in the frequency of osteolytic lesions (p = 0.259). The median effective dose of the study protocol was significantly lower (1.45 mSv vs. 5.65 mSv; p < 0.0001).

Conclusion

WBLDCT with Sn 100 kV can obtain sufficient image quality for the depiction of osteolytic lesions while reducing the radiation dose by approximately 74%.

Key points

• Spectral shaping using tin filtration is beneficial for whole-body low-dose CT

• Sn 100 kV yields sufficient image quality for depiction of osteolytic lesions

• Whole-body low-dose CT can be performed with a median dose of 1.5 mSv

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Title: Whole-body ultra-low dose CT using spectral shaping for detection of osteolytic lesion in multiple myeloma
Authors: Saravanabavaan Suntharalingam
Christian Mikat
Axel Wetter
Nika Guberina
Ahmed Salem
Philipp Heil
Michael Forsting
Kai Nassenstein
Publication date: 01-06-2018
Publisher: Springer Berlin Heidelberg
Published in: European Radiology / Issue 6/2018
Print ISSN: 0938-7994
Electronic ISSN: 1432-1084
DOI: https://doi.org/10.1007/s00330-017-5243-8

At a glance: The ONWARDS insulin icodec trials

Springer Medicine

Whole-body ultra-low dose CT using spectral shaping for detection of osteolytic lesion in multiple myeloma

Abstract

Objectives

Methods

Results

Conclusion

Key points

At a glance: The ONWARDS insulin icodec trials

Springer Medicine

Abstract

Objectives

Methods

Results

Conclusion

Key points

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