کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
466294 697819 2016 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Mask_explorer: A tool for exploring brain masks in fMRI group analysis
ترجمه فارسی عنوان
Mask_explorer: ابزاری برای کاوش ماسک های مغز در تجزیه و تحلیل گروهی fMRI
کلمات کلیدی
fMRI؛ تجزیه و تحلیل گروهی؛ اکسپلورر مجموعه داده؛ پیش پردازش؛ نقشه برداری پارامتری آماری؛ ابزار
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر علوم کامپیوتر (عمومی)
چکیده انگلیسی


• We found that interface for exploration of optimal volumes of interest is missing.
• We developed a tool, the mask_explorer, freely available with graphical user interface.
• Tool for quick validation of the group fMRI analysis space is described.
• Practical examples with crucial role of the mask_explorer are shown.
• Usage of mask_explorer before group fMRI analysis is recommended.

Background and objectiveFunctional magnetic resonance imaging (fMRI) studies of the human brain are appearing in increasing numbers, providing interesting information about this complex system. Unique information about healthy and diseased brains is inferred using many types of experiments and analyses. In order to obtain reliable information, it is necessary to conduct consistent experiments with large samples of subjects and to involve statistical methods to confirm or reject any tested hypotheses. Group analysis is performed for all voxels within a group mask, i.e. a common space where all of the involved subjects contribute information. To our knowledge, a user-friendly interface with the ability to visualize subject-specific details in a common analysis space did not yet exist. The purpose of our work is to develop and present such interface.MethodsSeveral pitfalls have to be avoided while preparing fMRI data for group analysis. One such pitfall is spurious non-detection, caused by inferring conclusions in the volume of a group mask that has been corrupted due to a preprocessing failure. We describe a MATLAB toolbox, called the mask_explorer, designed for prevention of this pitfall.ResultsThe mask_explorer uses a graphical user interface, enables a user-friendly exploration of subject masks and is freely available. It is able to compute subject masks from raw data and create lists of subjects with potentially problematic data. It runs under MATLAB with the widely used SPM toolbox. Moreover, we present several practical examples where the mask_explorer is usefully applied.ConclusionsThe mask_explorer is designed to quickly control the quality of the group fMRI analysis volume and to identify specific failures related to preprocessing steps and acquisition. It helps researchers detect subjects with potentially problematic data and consequently enables inspection of the data.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computer Methods and Programs in Biomedicine - Volume 134, October 2016, Pages 155–163
نویسندگان
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