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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 대한자기공명의과학회 Investigative Magnetic Resonance Imaging Investigative Magnetic Resonance Imaging 제19권 제1호
- 발행연도
- 2015.1
- 수록면
- 31 - 36 (6page)
이용수
초록· 키워드
오류제보하기
Purpose: To compare the depiction of brain metastases on contrast-enhanced imageswith 7.0 tesla (T) and at 1.5T MRI.
Materials and Methods: Four consecutive patients with brain metastases werescanned on 7.0T whole-body scanner and 1.5T MRI. A 3D T1-weighted gradient echosequence (3D T1-GRE) at 1.5T (voxel size = 0.9 × 0.9 × 1.5 mm3 after double-dose,gadoterate meglumine, Gd-DOTA) was compared to a 7.0T 3D T1-GRE sequence(voxel size = 0.4 × 0.4 × 0.8 mm3, single-dose Gd-DOTA) in four patients after a 5minute delay. The number of contrast-enhancing metastases in MPRAGE images wascompared in each patient by two radiologists in consensus. We measured contrastratio of enhancing brain metastases and white matter in 1.5T and 7.0T.
Results: In all four patients 7.0T 3D T1-GRE images after single-dose Gd-DOTAand 1.5T after double-dose Gd-DOTA depicted 11 brain metastases equally. In thequantitative analysis of contrast ratios of enhancing brain metastases and whitematter, the 1.5T 3D T1-GRE after double-dose showed an increased contrast ratiocompared to 7.0T 3D T1-GRE after single-dose (0.961 ± 0.571 versus 0.885 ± 0.494; n= 11 metastases). But this difference was not statistically significant (P = 0.711).
Conclusion: Our preliminary results indicate that 7.0T single-dose Gd-enhancedimages were not different to 1.5T double-dose Gd-enhanced images for the detectionof brain metastases.
목차
등록된 정보가 없습니다.
참고문헌 (24)
참고문헌 신청
Arnold SM / 2001 / Diagnosis and management of brain metastases / Hematol Oncol Clin North Am 15 (vii) : 1085 ~ 1107
Biswas J / 2005 / Brain tumor enhancement in magnetic resonance imaging: comparison of signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR) at 1.5 versus 3 tesla /
Davis PC / 1991 / Diagnosis of cerebral metastases: double-dose delayed CT vs contrast-enhanced MR imaging / AJNR Am J Neuroradiol 12 : 293 ~ 300
Engh JA / 2007 / Optimizing intracranial metastasis detection for stereotactic radiosurgery / Stereotact Funct Neurosurg 85 : 162 ~ 168
Gizewski ER / 2007 / fMRI at 7 T: whole-brain coverage and signal advantages even infratentorially / Neuroimage 37 : 761 ~ 768
Biswas J / 2005 / Brain tumor enhancement in magnetic resonance imaging: comparison of signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR) at 1.5 versus 3 tesla /
Davis PC / 1991 / Diagnosis of cerebral metastases: double-dose delayed CT vs contrast-enhanced MR imaging / AJNR Am J Neuroradiol 12 : 293 ~ 300
Engh JA / 2007 / Optimizing intracranial metastasis detection for stereotactic radiosurgery / Stereotact Funct Neurosurg 85 : 162 ~ 168
Gizewski ER / 2007 / fMRI at 7 T: whole-brain coverage and signal advantages even infratentorially / Neuroimage 37 : 761 ~ 768
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