Third Ventricular Landmarks
Third Ventricular Landmarks - Related Videos
12:09
Patient-specific Modeling of the Heart: Estimation of Ventricular Fiber Orientations
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Cited by 14 •
2013
A methodology to estimate ventricular fiber orientations from in vivo images of patient heart geometries for personalized modeling is described. Validation of the methodology performed using normal and failing canine hearts demonstrate that that there are no significant differences between estimated and acquired fiber orientations at a clinically observable level.
04:47
Systematic Bronchoscopy: the Four Landmarks Approach
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Cited by 4 •
2023
Here, we present a protocol to navigate the bronchial maze in a structured manner, splitting the bronchoscopy into a stepwise approach-the four landmarks approach.
05:22
Systematic Endobronchial Ultrasound - The Six Landmarks Approach
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Cited by 1 •
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Endobronchial ultrasound-guided sampling using transbronchial needle aspiration plays a key role in staging and diagnosing lung cancer. We propose a systematic stepwise approach dividing the procedure into six landmarks that should be taught to new operators.
09:40
Induction of Right Ventricular Failure by Pulmonary Artery Constriction and Evaluation of Right Ventricular Function in Mice
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Cited by 9 •
2019
Here, we provide a useful approach for studying the mechanism of right ventricular failure. A more convenient and efficient approach to pulmonary artery constriction is established using surgical instruments made inhouse. In addition, methods to evaluate the quality of this approach by echocardiography and catheterization are provided.
10:33
Assessment of Right Ventricular Structure and Function in Mouse Model of Pulmonary Artery Constriction by Transthoracic Echocardiography
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Cited by 34 •
2014
Right ventricle (RV) dysfunction is critical to the pathogenesis of cardiovascular disease, yet limited methodologies are available for its evaluation. Recent advances in ultrasound imaging provide a noninvasive and accurate option for longitudinal RV study. Herein, we detail a step-by-step echocardiographic method using a murine model of RV pressure overload.
FAQs
The interventricular foramina connect the lateral ventricles with the third ventricle, while the cerebral aqueduct continues the route toward the fourth ventricle. Their positions create a sequential pathway through the ventricular system. Recognizing this arrangement helps explain how narrowing or blockage at a connection can disrupt cerebrospinal fluid movement and alter ventricular size.
The thalamus and hypothalamus form major relationships that help define the third ventricle’s surrounding anatomy. Their positions provide a reference for distinguishing the ventricular space from adjacent diencephalic structures on anatomical studies and neuroimaging. This orientation is especially useful when correlating a lesion’s location with nearby neurological functions or with the ventricle’s boundaries.
The anterior and posterior commissures, together with the infundibular and suprapineal recesses, provide additional points of orientation within the third ventricular region. These features help describe the cavity in a more precise spatial framework than its central position alone. Identifying them supports consistent interpretation of anatomical images and recognition of abnormal displacement or involvement.
Image interpretation relies on the expected positions and relationships of the thalamus, hypothalamus, commissures, recesses, foramina, and cerebral aqueduct. Comparing these landmarks across a scan helps determine whether a lesion affects the ventricular boundaries or connections. The resulting anatomical localization can support assessment of ventricular distortion, cerebrospinal fluid obstruction, and associated hydrocephalus.
The interventricular foramina and cerebral aqueduct are particularly important because they mark connections along the cerebrospinal fluid pathway. A lesion or narrowing involving either region may interfere with passage between ventricular compartments. Evaluating these connections alongside the surrounding third ventricular landmarks helps identify the likely level of obstruction and interpret resulting ventricular enlargement.
Endoscopic and microsurgical planning depends on recognizing the ventricular connections, surrounding walls, recesses, and commissures before approaching the region. These landmarks provide an anatomical map for locating a target and understanding nearby structures. Their relationships also help clinicians correlate the planned route with imaging findings, potential obstruction, lesion position, and relevant neurological function.