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Role of diffusion-weighted mr imaging in characterization of posterior fossa tumors
Source
al-Kindy College Medical Journal
Issue
Vol. 14, Issue 1 (30 Jun. 2018), pp.8-12, 5 p.
Publisher
University of Baghdad al-Kindi College of Medicine
Publication Date
2018-06-30
Country of Publication
Iraq
No. of Pages
5
Main Subjects
Abstract EN
Background: Conventional MR imaging is essential for diagnosis and evaluation of the posterior fossa tumors Objectives: To assess the value of diffusion weighted imaging and apparent diffusion coefficient in making distinction between different histological types of posterior fossa tumors.
Type of the study: Cross-sectional study.
Methods: Brain MRI and DWI assessed 19 patients (12 female and 7 male) with MRI diagnosis of posterior fossa tumors.
absolute ADC values of contrast -enhancing solid tumor region and ADC ratio of solid tumor to ADC of normal -appearing deep White matter were compared with histological diagnosis postoperatively .The mean ADC value and ratio were determined by using a 2-tailed T test.
Results: In eight of medulloblastoma ,The mean ADC value was 0.67±0.14x 10-3 mm 2/s and ratio 0.86±0.19 , ependymoma (n=3), ADC value 1.09 ±0.14 x10 -3 mm 2 /s and ratio 1,43±0.13 , pilocytic astrocytoma (n=4) ADC value 1,72 ±0.27x10 -3 mm2/s and ratio 2.19±0.4, brainstem glioma (n=2) with ADC value1.18±0.06 x10-3mm2/s and ratio 1.64±0.08 , haemangioblastoma (n=1) with ADC value1.46x10-1mm2/s and ratio 1.87 , and meningioma with ADC value 0.72x10-3mm2/s and ratio 0.85.
ADC values were higher in JPA than in ependymomas and medulloblastoma (P value Conclusion: calculation of apparent diffusion coefficient value in the solid enhancing portion of tumor seems to be reliable for differentiate between medulloblastoma at one end and , juvenile pilocytic astrocytoma (JPA) and ependymoma at other end as the former has ADC of < 1 while other tumors have ADC value of >1.
American Psychological Association (APA)
Husayn, Lubnah Ali. 2018. Role of diffusion-weighted mr imaging in characterization of posterior fossa tumors. al-Kindy College Medical Journal،Vol. 14, no. 1, pp.8-12.
https://search.emarefa.net/detail/BIM-840156
Modern Language Association (MLA)
Husayn, Lubnah Ali. Role of diffusion-weighted mr imaging in characterization of posterior fossa tumors. al-Kindy College Medical Journal Vol. 14, no. 1 (2018), pp.8-12.
https://search.emarefa.net/detail/BIM-840156
American Medical Association (AMA)
Husayn, Lubnah Ali. Role of diffusion-weighted mr imaging in characterization of posterior fossa tumors. al-Kindy College Medical Journal. 2018. Vol. 14, no. 1, pp.8-12.
https://search.emarefa.net/detail/BIM-840156
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 12
Record ID
BIM-840156