Journal article
Role of PROPELLER diffusion weighted imaging and apparent diffusion coefficient in the diagnosis of sellar and parasellar lesions
European journal of radiology, Vol.74(3), pp.420-427
06/01/2010
DOI: 10.1016/j.ejrad.2009.03.031
PMID: 19394778
Abstract
To evaluate the role of the apparent diffusion coefficient (ADC) using periodically rotated overlapping parallel lines with enhanced reconstruction (PROPELLER) diffusion weighted imaging (DWI) in the differentiation between sellar and parasellar mass lesions.
The study protocol was approved by our institutional review board. We retrospectively studied 60 patients with sellar and parasellar lesions who had undergone PROPELLER DWI on a 3-T MR imager. Conventional MRI findings were expressed as the ratio of signal intensity (SI) in the lesions to the normal white matter and the degree of contrast enhancement. ADC values were calculated as the minimum (ADC-MIN), mean (ADC-MEAN), and maximum (ADC-MAX). All patients underwent surgery and all specimens were examined histologically. Logistic discriminant analysis was performed by using the SI ratios on T1- and T2-weighted images (T1-WI, T2-WI), the degree of enhancement, and absolute ADC values as independent variables.
ADC-MIN of hemorrhagic pituitary adenomas was lower than of the other lesions with similar appearance on conventional MRI (non-hemorrhagic pituitary adenomas, craniopharyngiomas, Rathke's cleft cysts; accuracy 100%); the useful cut-off value was 0.700
×
10
−3
mm
2/s. ADC-MAX of meningiomas was lower than of non-hemorrhagic pituitary adenomas (accuracy 90.3%;
p
<
0.01). ADC-MIN of craniopharyngiomas was lower than of Rathke's cleft cysts (accuracy 100%;
p
<
0.05).
As PROPELLER DWI is less sensitive to susceptibility artifacts than single-shot echoplanar DWI, it is more useful in the examination of sellar and parasellar lesions. Calculation of the ADC values helps to differentiate between various sellar and parasellar lesions.
Details
- Title: Subtitle
- Role of PROPELLER diffusion weighted imaging and apparent diffusion coefficient in the diagnosis of sellar and parasellar lesions
- Creators
- Omar M. Mahmoud - Hiroshima UniversityAtsushi Tominaga - Hiroshima UniversityVishwa Jeet Amatya - Hiroshima UniversityMegu Ohtaki - Hiroshima UniversityKazuhiko Sugiyama - Hiroshima UniversityTaiichi Saito - Hiroshima UniversityTetsuhiko Sakoguchi - Hiroshima UniversityYasuyuki Kinoshita - Hiroshima UniversityPrabin Shrestha - Hiroshima UniversityNobukazu Abe - Hiroshima UniversityYuji Akiyama - Hiroshima UniversityYukio Takeshima - Hiroshima UniversityKazunori Arita - Kagoshima UniversityKaoru Kurisu - Hiroshima UniversityFumiyuki Yamasaki - Hiroshima University
- Resource Type
- Journal article
- Publication Details
- European journal of radiology, Vol.74(3), pp.420-427
- Publisher
- Elsevier Ireland Ltd
- DOI
- 10.1016/j.ejrad.2009.03.031
- PMID
- 19394778
- ISSN
- 0720-048X
- eISSN
- 1872-7727
- Language
- English
- Date published
- 06/01/2010
- Academic Unit
- Neurosurgery
- Record Identifier
- 9984697048802771
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