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Image quality assessment of silent T2 PROPELLER sequence for brain imaging in infants

Kim, HG  | Choi, JW  | Yoon, SH  | Lee, S
The British journal of radiology, 91(1083). : 20170680-20170680, 2018
Journal Title
The British journal of radiology
OBJECTIVE: Infants are vulnerable to high acoustic noise. Acoustic noise generated by MR scanning can be reduced by a silent sequence. The purpose of this study is to compare the image quality of the conventional and silent T2 PROPELLER sequences for brain imaging in infants.
METHODS: A total of 36 scans were acquired from 24 infants using a 3 T MR scanner. Each patient underwent both conventional and silent T2 PROPELLER sequences. Acoustic noise level was measured. Quantitative and qualitative assessments were performed with the images taken with each sequence.
RESULTS: The sound pressure level of the conventional T2 PROPELLER imaging sequence was 92.1 dB and that of the silent T2 PROPELLER imaging sequence was 73.3 dB (reduction of 20%). On quantitative assessment, the two sequences (conventional vs silent T2 PROPELLER) did not show significant difference in relative contrast (0.069 vs 0.068, p value = 0.536) and signal-to-noise ratio (75.4 vs 114.8, p value = 0.098). Qualitative assessment of overall image quality (p value = 0.572), grey-white differentiation (p value = 0.986), shunt-related artefact (p value > 0.999), motion artefact (p value = 0.801) and myelination degree in different brain regions (p values >/= 0.092) did not show significant difference between the two sequences.
CONCLUSION: The silent T2 PROPELLER sequence reduces acoustic noise and generated comparable image quality to that of the conventional sequence.
ADVANCES IN KNOWLEDGE: This is the first report to compare silent T2 PROPELLER images with that of conventional T2 PROPELLER images in children.

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Journal Papers > School of Medicine / Graduate School of Medicine > Radiology
Journal Papers > School of Medicine / Graduate School of Medicine > Neurosurgery
Ajou Authors
김, 현지  |  윤, 수한  |  최, 진욱
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