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01-02-2017 | Magnetic Resonance

Grading diffuse gliomas without intense contrast enhancement by amide proton transfer MR imaging: comparisons with diffusion- and perfusion-weighted imaging

Authors: Osamu Togao, Akio Hiwatashi, Koji Yamashita, Kazufumi Kikuchi, Jochen Keupp, Koji Yoshimoto, Daisuke Kuga, Masami Yoneyama, Satoshi O. Suzuki, Toru Iwaki, Masaya Takahashi, Koji Iihara, Hiroshi Honda

Published in: European Radiology | Issue 2/2017

Abstract

Objectives

To investigate whether amide proton transfer (APT) MR imaging can differentiate high-grade gliomas (HGGs) from low-grade gliomas (LGGs) among gliomas without intense contrast enhancement (CE).

Methods

This retrospective study evaluated 34 patients (22 males, 12 females; age 36.0 ± 11.3 years) including 20 with LGGs and 14 with HGGs, all scanned on a 3T MR scanner. Only tumours without intense CE were included. Two neuroradiologists independently performed histogram analyses to measure the 90th-percentile (APT₉₀) and mean (APT_mean) of the tumours’ APT signals. The apparent diffusion coefficient (ADC) and relative cerebral blood volume (rCBV) were also measured. The parameters were compared between the groups with Student’s t-test. Diagnostic performance was evaluated with receiver operating characteristic (ROC) analysis.

Results

The APT₉₀ (2.80 ± 0.59 % in LGGs, 3.72 ± 0.89 in HGGs, P = 0.001) and APT_mean (1.87 ± 0.49 % in LGGs, 2.70 ± 0.58 in HGGs, P = 0.0001) were significantly larger in the HGGs compared to the LGGs. The ADC and rCBV values were not significantly different between the groups. Both the APT₉₀ and APT_mean showed medium diagnostic performance in this discrimination.

Conclusions

APT imaging is useful in discriminating HGGs from LGGs among diffuse gliomas without intense CE.

Key Points

• Amide proton transfer (APT) imaging helps in grading non-enhancing gliomas

• High-grade gliomas showed higher APT signal than low-grade gliomas

• APT imaging showed better diagnostic performance than diffusion- and perfusion-weighted imaging

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Title: Grading diffuse gliomas without intense contrast enhancement by amide proton transfer MR imaging: comparisons with diffusion- and perfusion-weighted imaging
Authors: Osamu Togao
Akio Hiwatashi
Koji Yamashita
Kazufumi Kikuchi
Jochen Keupp
Koji Yoshimoto
Daisuke Kuga
Masami Yoneyama
Satoshi O. Suzuki
Toru Iwaki
Masaya Takahashi
Koji Iihara
Hiroshi Honda
Publication date: 01-02-2017
Publisher: Springer Berlin Heidelberg
Published in: European Radiology / Issue 2/2017
Print ISSN: 0938-7994
Electronic ISSN: 1432-1084
DOI: https://doi.org/10.1007/s00330-016-4328-0

ACC 2024 Congress

Springer Medicine

Grading diffuse gliomas without intense contrast enhancement by amide proton transfer MR imaging: comparisons with diffusion- and perfusion-weighted imaging

Abstract

Objectives

Methods

Results

Conclusions

Key Points

ACC 2024 Congress

Springer Medicine

Abstract

Objectives

Methods

Results

Conclusions

Key Points

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