Hydro-MRI for the visualization of gastric wall motility using RARE magnetic resonance imaging sequences

Bilecen, Deniz; Scheffler, Klaus; Seifritz, Erich; Bongartz, G.; Steinbrich, W.

doi:10.1007/s002619910005

Cited by 32 publications

(24 citation statements)

References 12 publications

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“…This reflects the lack of sufficient spatial resolution to depict the gastric mucosal surfaces. The MRbased analysis of functional heart and gastric disorders, on the other hand, seems to have considerably more potential [20,[24][25][26].…”

Section: Discussionmentioning

confidence: 99%

Measuring tongue volumes and visualizing the chewing and swallowing process using real-time TrueFISP imaging?initial clinical experience in healthy volunteers and patients with acromegaly

et al. 2004

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This study assessed both two-dimensional (2D) TrueFISP imaging for quantifying tongue volume and real-time TrueFISP imaging for evaluating chewing and swallowing in healthy volunteers and patients with acromegaly. In 50 healthy volunteers, tongue volumes were measured using a 2D TrueFISP sequence. Chewing and swallowing were visualized using a real-time TrueFISP sequence. Ten patients with acromegaly were examined twice with the same magnetic resonance imaging protocol: once prior to therapy and a second time 6 months after therapy. Prior to therapy, healthy volunteers had an average tongue volume of 140 ml for men and 90 ml for women, and patients with acromegaly had an average tongue volume of 180 ml for men and 145 ml for women. However, 6 months after therapy the mean tongue volumes in patients with acromegaly had decreased to 154 ml in the men and to 125 ml in the women. The chewing and swallowing process was normal in all volunteers. Prior to therapy, just two patients showed a chewing and swallowing pathology, which disappeared after therapy. Patients with acromegaly had larger tongue volumes than healthy volunteers, and TrueFISP imaging proved feasible for visualizing chewing and swallowing in real time and is capable of detecting possible pathologies. Furthermore, TrueFISP imaging can be used to monitor therapeutic approaches in patients with acromegaly.

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Section: Discussionmentioning

confidence: 99%

Measuring tongue volumes and visualizing the chewing and swallowing process using real-time TrueFISP imaging?initial clinical experience in healthy volunteers and patients with acromegaly

et al. 2004

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“…The propagation velocity averages 2.5 mm/s, and increases from the proximal to the distal stomach. Each contraction takes approximately 1 min to advance from the fundus to the pylorus (Bilecen and others 2000; Kwiatek and others 2006; Schulze 2006).…”

Section: Stomach Physiology and Food Digestionmentioning

confidence: 99%

“…As the peristaltic wave reaches the pylorus, the contraction width increases and indentations deepen, often virtually occluding the antral lumen, a process referred to as “terminal antral contraction” (Bilecen and others 2000; Schulze 2006). Meanwhile, the pylorus contracts and the sphincter narrows, so that the pyloric opening is small on the arrival of the peristaltic wave.…”

Section: Stomach Physiology and Food Digestionmentioning

confidence: 99%

Disintegration of Solid Foods in Human Stomach

Kong

Singh

2008

Journal of Food Science

502

321

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Knowledge of the disintegration of solid foods in human stomach is essential to assess the bioavailability of nutrients in the gastrointestinal (GI) tract. A comprehensive review of food gastric digestion, focusing on disintegration of solid foods, is presented. Most of the research reviewed in this paper is contained in the medical, pharmaceutical, food, and nutritional literature. Stomach physiology is briefly introduced, including composition and rheological properties of gastric contents, stomach wall motility in fed/fasted states, and hydrodynamic and mechanical forces that act on the ingested food. In vivo and in vitro methods used for studying food and drug digestion in GI are summarized. Stomach emptying rate, which controls the rate of absorption of nutrients, is highly related to the disintegration of foods. This topic is highlighted with focus on the important mechanisms and the influence of chemical and physical properties of foods. Future research in this area is identified to increase our fundamental understanding of the food digestion process in the stomach as related to the food composition, material properties such as texture and microstructure, and chemical characteristics. This information is necessary to develop new guidelines for seeking innovative processing methods to manufacture foods specifically targeted for health.

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“…To assess gastric motility, a fast two-dimensional (2D) dynamic scan (such as turbo field echo, turbo spin echo, echo planar imaging, true FISP, balanced FFE, RARE) has been advocated [4, 5, 7, 15, 19, 20]. There is no particular preference for a specific acquisition technique, as the only goal of the technique is to be sufficiently fast to reach a temporal resolution that is high enough to analyze gastric motility with MRI.…”

Section: Technical Aspects Of Gastric Mrimentioning

confidence: 99%

MRI for the evaluation of gastric physiology

Zwart

Roos

2010

Eur Radiol

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Background:Evaluation of gastric physiology (gastric emptying and motility) is important for the diagnosis of disturbances such as functional dyspepsia. MRI is a non-invasive technique that allows simultaneous registration of gastric emptying and motility.Aim:To provide an overview of the literature of studies that used MRI as a tool for evaluation of gastric function in both research and clinical settings.Materials and methods:A MEDLINE search was performed (1990–2008) directed at the radiology and gastroenterology literature on gastric physiology. Key words that were used included: functional tests, gastric emptying, gastric motility, gastric physiology and MRI. Twenty-five articles fulfilled the inclusion criteria and were included in the analysis.Results and conclusion:Over the last decade, MRI has developed as a reliable, non-invasive method for detailed evaluation of gastric emptying and motility without the disadvantages of ionizing radiation and without the use of intragastric catheters that influence gastric physiology.

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Hydro-MRI for the visualization of gastric wall motility using RARE magnetic resonance imaging sequences

Cited by 32 publications

References 12 publications

Measuring tongue volumes and visualizing the chewing and swallowing process using real-time TrueFISP imaging?initial clinical experience in healthy volunteers and patients with acromegaly

Measuring tongue volumes and visualizing the chewing and swallowing process using real-time TrueFISP imaging?initial clinical experience in healthy volunteers and patients with acromegaly

Disintegration of Solid Foods in Human Stomach

MRI for the evaluation of gastric physiology

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