scholarly journals Mapping of Brain Activations to Rectal Balloon Distension Stimuli in Male Patients with Irritable Bowel Syndrome Using Functional Magnetic Resonance Imaging

2017 ◽  
Vol 23 (3) ◽  
pp. 415-427 ◽  
Author(s):  
Anupam Guleria ◽  
Arun Karyampudi ◽  
Rajan Singh ◽  
Chunni L Khetrapal ◽  
Abhai Verma ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Irritable Bowel Syndrome ◽  
Magnetic Resonance ◽  
Functional Magnetic Resonance Imaging ◽  
Functional Magnetic Resonance ◽  
Resonance Imaging ◽  
Rectal Balloon ◽  
Balloon Distension ◽  
Male Patients ◽  
Irritable Bowel

scholarly journals Intrinsic brain abnormalities of irritable bowel syndrome with diarrhea: a preliminary resting-state functional magnetic resonance imaging study

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Weiqun Ao ◽  
Yougen Cheng ◽  
Mingxian Chen ◽  
Fuquan Wei ◽  
Guangzhao Yang ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Irritable Bowel Syndrome ◽  
Magnetic Resonance ◽  
Functional Magnetic Resonance Imaging ◽  
Resting State ◽  
Pearson Correlation ◽  
Functional Magnetic Resonance ◽  
Resonance Imaging ◽  
Left Hippocampus ◽  
Irritable Bowel

Abstract Background The aim of the present study was to explore the brain active characteristics of patients with irritable bowel syndrome with diarrhea (IBS-D) using resting-state functional magnetic resonance imaging technology. Methods Thirteen IBS-D patients and fourteen healthy controls (HC) were enrolled. All subjects underwent head MRI examination during resting state. A voxel-based analysis of fractional amplitude of low frequency fluctuation (fALFF) maps between IBS-D and HC was performed using a two-sample t-test. The relationship between the fALFF values in abnormal brain regions and the scores of Symptom Severity Scale (IBS-SSS) were analyzed using Pearson correlation analysis. Results Compared with HC, IBS-D patients had lower fALFF values in the left medial superior frontal gyrus and higher fALFF values in the left hippocampus and right precuneus. There was a positive correlation between the duration scores of IBS-SSS and fALFF values in the right precuneus. Conclusion The altered fALFF values in the medial superior frontal gyri, left hippocampus and right precuneus revealed changes of intrinsic neuronal activity, further revealing the abnormality of gut-brain axis of IBS-D.

scholarly journals Use of functional magnetic resonance imaging in patients with irritable bowel syndrome and functional dyspepsia

2019 ◽  
Vol 14 (3) ◽  
pp. 163-167
Author(s):  
Katarzyna Skrobisz ◽  
Grażyna Piotrowicz ◽  
Adrianna Drozdowska ◽  
Karolina Markiet ◽  
Agnieszka Sabisz ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Irritable Bowel Syndrome ◽  
Magnetic Resonance ◽  
Functional Magnetic Resonance Imaging ◽  
Functional Dyspepsia ◽  
Functional Magnetic Resonance ◽  
Resonance Imaging ◽  
Irritable Bowel

scholarly journals The Application of Functional Magnetic Resonance Imaging in an Infant Rat Model of Irritable Bowel Syndrome

2014 ◽  
Vol 2014 ◽  
pp. 1-4
Author(s):  
Xueping Zhu ◽  
Xiaoli Zhu ◽  
Weichang Chen ◽  
Jianhua Chen
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Functional Magnetic Resonance Imaging ◽  
Anterior Cingulate ◽  
Control Group ◽  
Functional Magnetic Resonance ◽  
Resonance Imaging ◽  
Model Group ◽  
Rectal Balloon ◽  
Bold Fmri

The aim of this study was to use functional magnetic resonance imaging (BOLD-fMRI) to investigate the activated region associated with visceral pain in the brains of infant rats in a model of IBS. Sixteen newborn rats were randomized into an IBS model group and a control group. Those in the IBS group were separated from their mothers and were mechanically immobilized and had rectal sensitization with mustard essential oil for 1 week. The control group had no treatment. After 2 weeks, balloon catheters were inflated with 5 or 10 mL of air in the rectums of both groups. BOLD-fMRI was performed and the data analyzed by imaging software. In the IBS model group, rectal stimulation with 5 mL air distension activated the anterior cingulate cortex, insula cortex (IC), prefrontal cortex (PFC), and thalamus, while 10 mL air significantly activated the ACC, IC, PFC, and thalamus in the model, but not controls. IBS model group was hypersensitive to visceral stimulation by rectal balloon inflation. The major brain areas participating in visceral sensation included the IC, PFC, and thalamus.

Functional Magnetic Resonance Imaging Measures of Blood Flow Patterns in the Human Auditory Cortex in Response to Sound

1998 ◽  
Vol 41 (3) ◽  
pp. 538-548 ◽  
Author(s):  
Sean C. Huckins ◽  
Christopher W. Turner ◽  
Karen A. Doherty ◽  
Michael M. Fonte ◽  
Nikolaus M. Szeverenyi
Keyword(s):  
Magnetic Resonance Imaging ◽  
Blood Flow ◽  
Magnetic Resonance ◽  
Functional Magnetic Resonance Imaging ◽  
Functional Magnetic Resonance ◽  
Resonance Imaging ◽  
Speech Stimuli ◽  
Complex Stimuli ◽  
Scanning Session ◽  
Auditory Research

Functional Magnetic Resonance Imaging (fMRI) holds exciting potential as a research and clinical tool for exploring the human auditory system. This noninvasive technique allows the measurement of discrete changes in cerebral cortical blood flow in response to sensory stimuli, allowing determination of precise neuroanatomical locations of the underlying brain parenchymal activity. Application of fMRI in auditory research, however, has been limited. One problem is that fMRI utilizing echo-planar imaging technology (EPI) generates intense noise that could potentially affect the results of auditory experiments. Also, issues relating to the reliability of fMRI for listeners with normal hearing need to be resolved before this technique can be used to study listeners with hearing loss. This preliminary study examines the feasibility of using fMRI in auditory research by performing a simple set of experiments to test the reliability of scanning parameters that use a high resolution and high signal-to-noise ratio unlike that presently reported in the literature. We used consonant-vowel (CV) speech stimuli to investigate whether or not we could observe reproducible and consistent changes in cortical blood flow in listeners during a single scanning session, across more than one scanning session, and in more than one listener. In addition, we wanted to determine if there were differences between CV speech and nonspeech complex stimuli across listeners. Our study shows reproducibility within and across listeners for CV speech stimuli. Results were reproducible for CV speech stimuli within fMRI scanning sessions for 5 out of 9 listeners and were reproducible for 6 out of 8 listeners across fMRI scanning sessions. Results of nonspeech complex stimuli across listeners showed activity in 4 out of 9 individuals tested.

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