Abstract:
:Neocortical lesions (NLs) are an important component of multiple sclerosis (MS) pathology and may account for part of the physical and cognitive disability. Visualizing NLs of patients with MS using magnetic resonance imaging (MRI) poses several significant challenges. We optimized the inversion time (TI) of T(1)-based magnetization-prepared rapid acquisition gradient-echo (MPRAGE) images by suppressing the signal of the lesions and enhancing their appearance as hypointensities, on the basis of the derived quantitative T(1) measurements. The latter were achieved by the means of 2D inversion recovery fast spin echo (IR-FSE), repeated using different inversion times (TI). Comparisons of detection of NLs by MPRAGE and dual echo T(2) weighted (T(2)W) and proton density (PD) W. Four coronal brain slices from a deceased MS patient and two coronal brain slices from two formerly healthy donors were imaged using a 3 Tesla magnet (3 T) equipped with a multi-channel coil. Based upon the averaged T1 values computed from the MS specimen as well as visual inspection, an optimal TI of 380 ms was selected for the MPRAGE image. No NLs were seen in the specimens of the two healthy donors. Of the 40 total NLs observed, 8 (20%) were visible in all three sequences employed. Three (7.5%) NLs were visible only in the PDW image and 5 (12.5%) were seen only in the T(2)W image. Four NLs (10%) had clearly unique conspicuity in the MPRAGE image. Of those, 3 were retrospectively scored in the PDW image (1 NL) or in the T2W image (2 NLs). We conclude that for the detection of MS-related NLs, high-resolution T(1)-based MPRAGE and T(2)-W images offer complementary information and the combination of the two image sequences is crucial for increasing the sensitivity of detecting MS-induced NLs.
journal_name
J Neurol Scijournal_title
Journal of the neurological sciencesauthors
Bagnato F,Yao B,Cantor F,Merkle H,Condon E,Montequin M,Moore S,Quezado M,Tkaczyk D,McFarland Hdoi
10.1016/j.jns.2009.03.021subject
Has Abstractpub_date
2009-07-15 00:00:00pages
80-5issue
1-2eissn
0022-510Xissn
1878-5883pii
S0022-510X(09)00505-Xjournal_volume
282pub_type
杂志文章abstract::The neuropathology of 8 cases of S. Paulo south coast epidemic encephalitis (Rocio flavivirus), a new arbo B virus encephalitis, is described. The topographic pattern of the lesions appears to be almost specific. The gray matter is predominantly affected. Interstitial mononuclear infiltration, microglial proliferation...
journal_title:Journal of the neurological sciences
pub_type: 杂志文章
doi:10.1016/s0022-510x(80)80001-3
更新日期:1980-02-01 00:00:00
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journal_title:Journal of the neurological sciences
pub_type: 杂志文章
doi:10.1016/j.jns.2012.11.020
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journal_title:Journal of the neurological sciences
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更新日期:1991-11-01 00:00:00
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journal_title:Journal of the neurological sciences
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journal_title:Journal of the neurological sciences
pub_type: 杂志文章
doi:10.1016/0022-510x(92)90010-i
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journal_title:Journal of the neurological sciences
pub_type: 杂志文章
doi:10.1016/j.jns.2009.09.028
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journal_title:Journal of the neurological sciences
pub_type: 杂志文章
doi:10.1016/j.jns.2005.03.037
更新日期:2005-09-15 00:00:00
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journal_title:Journal of the neurological sciences
pub_type: 杂志文章
doi:10.1016/s0022-510x(97)00276-1
更新日期:1998-02-18 00:00:00
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journal_title:Journal of the neurological sciences
pub_type: 杂志文章
doi:10.1016/j.jns.2016.02.005
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journal_title:Journal of the neurological sciences
pub_type: 杂志文章
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journal_title:Journal of the neurological sciences
pub_type: 杂志文章,评审
doi:10.1016/s0022-510x(99)00250-6
更新日期:1999-12-01 00:00:00
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journal_title:Journal of the neurological sciences
pub_type: 杂志文章
doi:10.1016/s0022-510x(80)80013-x
更新日期:1980-02-01 00:00:00
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journal_title:Journal of the neurological sciences
pub_type: 杂志文章
doi:10.1016/0022-510x(93)90245-t
更新日期:1993-08-01 00:00:00
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journal_title:Journal of the neurological sciences
pub_type: 杂志文章
doi:10.1016/j.jns.2008.07.018
更新日期:2008-12-15 00:00:00
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journal_title:Journal of the neurological sciences
pub_type: 杂志文章
doi:10.1016/j.jns.2016.11.025
更新日期:2017-01-15 00:00:00
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journal_title:Journal of the neurological sciences
pub_type: 杂志文章
doi:10.1016/j.jns.2012.04.020
更新日期:2012-08-15 00:00:00
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journal_title:Journal of the neurological sciences
pub_type: 杂志文章
doi:10.1016/j.jns.2015.03.042
更新日期:2015-05-15 00:00:00
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journal_title:Journal of the neurological sciences
pub_type: 杂志文章
doi:10.1016/0022-510x(85)90129-7
更新日期:1985-07-01 00:00:00
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journal_title:Journal of the neurological sciences
pub_type: 杂志文章,评审
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journal_title:Journal of the neurological sciences
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journal_title:Journal of the neurological sciences
pub_type: 杂志文章
doi:10.1016/0022-510x(79)90036-4
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journal_title:Journal of the neurological sciences
pub_type: 杂志文章
doi:10.1016/0022-510x(87)90210-3
更新日期:1987-01-01 00:00:00
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journal_title:Journal of the neurological sciences
pub_type: 杂志文章
doi:10.1016/s0022-510x(02)00106-5
更新日期:2002-07-15 00:00:00
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journal_title:Journal of the neurological sciences
pub_type: 杂志文章
doi:10.1016/0022-510x(80)90089-1
更新日期:1980-09-01 00:00:00
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journal_title:Journal of the neurological sciences
pub_type: 杂志文章
doi:10.1016/j.jns.2011.07.010
更新日期:2011-11-15 00:00:00
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journal_title:Journal of the neurological sciences
pub_type: 杂志文章,评审
doi:10.1016/j.jns.2020.116778
更新日期:2020-05-15 00:00:00
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journal_title:Journal of the neurological sciences
pub_type: 杂志文章
doi:10.1016/0022-510x(96)82226-x
更新日期:1996-04-01 00:00:00
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journal_title:Journal of the neurological sciences
pub_type: 杂志文章
doi:10.1016/0022-510x(94)90028-0
更新日期:1994-09-01 00:00:00
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journal_title:Journal of the neurological sciences
pub_type: 杂志文章
doi:10.1016/0022-510x(82)90133-2
更新日期:1982-09-01 00:00:00
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journal_title:Journal of the neurological sciences
pub_type: 杂志文章
doi:10.1016/0022-510x(76)90232-x
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