Related Experiment Video
Updated: Jun 13, 2026

05:07
Multimodality Diagnosis of Mesenteric Ischemia
Published on: July 21, 2023
[Imaging of the small intestine: current knowledge].
1Medizinische Klinik 2, Klinikum Leverkusen, Leverkusen, Germany.
Der Internist
|May 8, 2010
Summary
Gastroenterologists can now better image the small intestine using advanced techniques like ultrasound (US) and magnetic resonance imaging (MRI). These methods, along with balloon enteroscopy, offer complementary diagnostic capabilities for intestinal diseases.
Area of Science:
- Gastroenterology
- Medical Imaging
Background:
- Small intestine imaging presents unique challenges in routine clinical practice.
- Traditional methods are complemented by advanced high-resolution imaging techniques.
Purpose of the Study:
- To provide an overview of current imaging methods for the small intestine.
- To discuss the significance and indications of various diagnostic techniques.
Main Methods:
- Comparison of endoscopy (including balloon enteroscopy), ultrasound (US), magnetic resonance imaging (MRI), and computed tomography (CT).
- Evaluation of lumen, wall, and surrounding structures assessment.
- Assessment of functional processes like passage and perfusion.
Main Results:
- Ultrasound and MRI have significantly impacted routine diagnostics for intestinal diseases.
- These methods assess not only the lumen but also the intestinal wall and surrounding structures.
- Ultrasound offers real-time visualization of functional processes like passage and perfusion.
Conclusions:
- Modern imaging modalities like US and MRI, alongside balloon enteroscopy, provide complementary tools for small intestine examination.
- Each method has specific indications and advantages for diagnosing intestinal diseases.
- Further evaluation is needed for the role of capsule techniques in small intestine imaging.
Related Concept Videos
Histology of the Small Intestine
The small intestine exhibits a unique histological structure that significantly enhances its function in digestion and nutrient absorption. These structures include circular folds, villi, and various specialized cells that collectively facilitate the digestion of food.
The intestinal lining features transverse folds called circular folds, each housing fingerlike projections known as intestinal villi. These villi are covered by a layer of simple columnar epithelium, also referred to as...
The intestinal lining features transverse folds called circular folds, each housing fingerlike projections known as intestinal villi. These villi are covered by a layer of simple columnar epithelium, also referred to as...
Imaging Studies III: Gastrointestinal Motility Studies and Virtual Colonoscopy
This lesson explores three gastrointestinal imaging techniques: radionuclide testing, colonic transit studies, and virtual colonoscopy.
Radionuclide Testing
Radionuclide testing is a sophisticated medical technique for assessing gastrointestinal motility. It focuses on gastric emptying and colonic transit time. Radioactive markers track the movement of food through the digestive system, providing insights into gastrointestinal disorders.
In gastric emptying studies, a meal's liquid and solid...
Radionuclide Testing
Radionuclide testing is a sophisticated medical technique for assessing gastrointestinal motility. It focuses on gastric emptying and colonic transit time. Radioactive markers track the movement of food through the digestive system, providing insights into gastrointestinal disorders.
In gastric emptying studies, a meal's liquid and solid...
Anatomy of the Intestines
Although digestion of proteins, carbohydrates, and lipids may begin in the stomach, it is completed in the intestine. The absorption of nutrients, water, and electrolytes from food and drink also occurs in the intestine. The intestines can be divided into two structurally distinct organs—the small and large intestines.
Small Intestines
The small intestine is an ~7 meter-long tube with an inner diameter of just 2.5 cm. Since most nutrients are absorbed here, the inner lining of the small...
Small Intestines
The small intestine is an ~7 meter-long tube with an inner diameter of just 2.5 cm. Since most nutrients are absorbed here, the inner lining of the small...
Small Intestine
The small intestine is primarily responsible for digestion and nutrient absorption. It spans from the pyloric sphincter to the ileocecal valve and connects to the large intestine.
The small intestine is divided into three main sections - the duodenum, jejunum, and ileum. The duodenum, approximately 25 cm long, is nearest the stomach. It acts as a 'mixing bowl,' where chyme (partially digested food) blends with digestive enzymes from the pancreas and liver. The duodenum's unique C-shape wraps...
The small intestine is divided into three main sections - the duodenum, jejunum, and ileum. The duodenum, approximately 25 cm long, is nearest the stomach. It acts as a 'mixing bowl,' where chyme (partially digested food) blends with digestive enzymes from the pancreas and liver. The duodenum's unique C-shape wraps...
Histology of the Large Intestine
The large intestine, a vital component of the gastrointestinal tract, is structured with four main layers: the mucosa, submucosa, muscularis, and serosa. Each layer performs a distinct role in facilitating the smooth functioning of the large intestine.
The innermost mucosa layer comprises simple columnar epithelium, lamina propria, and muscularis mucosae. This layer is primarily populated with absorptive cells, tasked with water absorption, and goblet cells, responsible for secreting mucus to...
The innermost mucosa layer comprises simple columnar epithelium, lamina propria, and muscularis mucosae. This layer is primarily populated with absorptive cells, tasked with water absorption, and goblet cells, responsible for secreting mucus to...
Renewal of Intestinal Stem Cells
The intestinal epithelial lining rapidly renews every 4 to 5 days. The renewal is facilitated by intestinal stem cells (ISCs) located at the base of the crypt– a gland located at the bottom of each villus. ISCs divide asymmetrically to form new stem cells and progenitor daughter cells. The daughter cells are called transit-amplifying (TA) cells which move upwards along the crypt and either differentiate into absorptive cells– the enterocytes or secretory cells– including the goblet,...