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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 대한자기공명의과학회 Investigative Magnetic Resonance Imaging Investigative Magnetic Resonance Imaging 제25권 제1호
- 발행연도
- 2021.3
- 수록면
- 23 - 34 (12page)
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Purpose: Differentiating between glioblastoma and solitary metastasis is very important for the planning of further workup and treatment. We assessed the ability of various morphological parameters using conventional MRI and diffusion-based techniques to distinguish between glioblastomas and solitary metastases in tumoral and peritumoral regions.
Materials and Methods: We included 38 patients with solitary brain tumors (21 glioblastomas, 17 solitary metastases). To find out if there were differences in the morphologic parameters of enhancing tumors, we analyzed their shape, margins, and enhancement patterns on postcontrast T1-weighted images. During analyses of peritumoral regions, we assessed the extent of peritumoral non-enhancing lesion on T2- and postcontrast T1-weighted images. We also aimed to detect peritumoral neoplastic cell infiltration by visual assessment of T2-weighted and diffusion based images, including DWI, ADC maps, and exponential DWI, and evaluated which sequence depicted peritumoral neoplastic cell infiltration most clearly.
Results: The shapes, margins, and enhancement patterns of tumors all significantly differentiated glioblastomas from metastases. Glioblastomas had an irregular shape, ill-defined margins, and a heterogeneous enhancement pattern; on the other hand, metastases had an ovoid or round shape, well-defined margins, and homogeneous enhancement. Metastases had significantly more extensive peritumoral T2 high signal intensity than glioblastomas had. In visual assessment of peritumoral neoplastic cell infiltration using T2-weighted and diffusion-based images, all sequences differed significantly between the two groups. Exponential DWI had the highest sensitivity for the diagnosis of both glioblastoma (100%) and metastasis (70.6%). A combination of exponential DWI and ADC maps was optimal for the depiction of peritumoral neoplastic cell infiltration in glioblastoma.
Conclusion: In the differentiation of glioblastoma from solitary metastatic lesions, visual morphologic assessment of tumoral and peritumoral regions using conventional MRI and diffusion-based techniques can also offer diagnostic information.
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참고문헌 (29)
참고문헌 신청
Chiang IC / 2004 / Distinction between highgrade gliomas and solitary metastases using peritumoral 3-T magnetic resonance spectroscopy, diffusion, and perfusion imagings / Neuroradiology 46:619~627
Opstad KS / 2004 / Differentiation of metastases from high-grade gliomas using short echo time 1H spectroscopy / J Magn Reson Imaging 20:187~192
Tang YM / 2006 / The solitary enhancing cerebral lesion : can FLAIR aid the differentiation between glioma and metastasis / AJNR Am J Neuroradiol 27:609~611
Ishimaru H / 2001 / Differentiation between high-grade glioma and metastatic brain tumor using single-voxel proton MR spectroscopy / Eur Radiol 11:1784~1791
SungKiCho / 2002 / Perfusion MR Imaging: Clinical Utility for the Differential Diagnosis of Various Brain Tumors / Korean Journal of Radiology 3(3):4~179
Opstad KS / 2004 / Differentiation of metastases from high-grade gliomas using short echo time 1H spectroscopy / J Magn Reson Imaging 20:187~192
Tang YM / 2006 / The solitary enhancing cerebral lesion : can FLAIR aid the differentiation between glioma and metastasis / AJNR Am J Neuroradiol 27:609~611
Ishimaru H / 2001 / Differentiation between high-grade glioma and metastatic brain tumor using single-voxel proton MR spectroscopy / Eur Radiol 11:1784~1791
SungKiCho / 2002 / Perfusion MR Imaging: Clinical Utility for the Differential Diagnosis of Various Brain Tumors / Korean Journal of Radiology 3(3):4~179
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