What are the limitations of a Video Fluoroscopic Swallowing Exam? The patient is observed swallowing various consistencies and textures, ranging from thin barium to barium-coated cookies, in order to evaluate his or her ability to swallow safely and effectively. This exam is often performed with a speech-language pathologist present. An x-ray radiograph is a noninvasive medical test that helps physicians diagnose and treat medical conditions.
Open in a separate window Table 3: We recently obtained a low energy magnification fluoroscopy system called The LabScope Glenbrook Technologies, Randolph, NJ that was specifically designed for our lab for use with mice and other small rodents Figure However, the markedly greater magnification levels of this system rendered it impossible to view the entire swallowing mechanism of a mouse in a single field of view.
Instead, two test positions are required, as shown in Figure Position 1 permits visualization of the entire head and proximal thoracic region. This position is necessary for assessing the oral and pharyngeal stages of swallowing.
Position 2 permits visualization from the swallow trigger point i. This position is necessary for assessing the esophageal stage of swallowing.
Preliminary work using The LabScope in combination with the new murine VFSS protocol has identified 13 objective swallow parameters that are consistently quantifiable in mice, which is nearly double the number obtained using high energy i. This outcome is attributed to the advanced magnification capabilities of The LabScope, which allows for visualization of numerous anatomical structures Figure 12 that were essentially invisible when using conventional systems: As a result, we also were able to analyze the videos for evidence of laryngeal penetration and aspiration.
Neither penetration nor aspiration was observed for any mouse in this study, regardless of health or disease conditions. Open in a separate window Figure The LabScope performs as a desktop fluoroscope for small animals.
Close-up view of The LabScope with labeled components. The scissor lift table is positioning an observation chamber within the fluoroscope field of view. Please click here to view a larger version of this figure.
Low Energy Fluoroscopy System. Images of a mouse obtained using a low energy fluoroscopy system. Note that the high magnification capability prevents visualization of the entire swallow mechanism within the fluoroscopy field of view. Position 1 — permits visualization of the entire head and proximal thoracic region.
The swallow trigger point black arrow is essentially centered within the field of view. Position 2 — permits visualization from the swallow trigger point black arrow to the GE junction white asterisk. Note the bolus passing through the distal esophagus white arrow.
Even at the lowest magnification setting leftboney structures of the head and neck of a mouse are readily visible using our low energy fluoroscopy system i.
Anatomical structures within the black square are shown and labeled at higher magnification to the right. Improved visualization of boney structures permits quantification of several additional swallow parameters that were impossible to analyze using high energy fluoroscopes.
Swallow rate and inter-swallow interval are representative VFSS parameters that can be quantified using either low or high energy fluoroscopy systems in combination with the new murine VFSS protocol.Dysphagia, which can result in aspiration pneumonia and death, is a well-known problem in patients with dementia and Parkinson’s disease.
There are few studies on dysphagia in patients with dementia with Lewy bodies (DLB) and Parkinson’s disease dementia (PDD), especially studies objectively documenting the type of swallowing dysfunction. He was referred to our dysphagia clinic for a videofluoroscopic swallowing study (VFSS).
An initial visual inspection of the mouth showed a large cystic mass behind the tongue (figure). The lesion was also seen in the vallecula on a lateral fluoroscopic view (figure). This study adapted human videofluoroscopic swallowing study (VFSS) methods for use with murine disease models for the purpose of .
A videofluoroscopic swallow study (VFSS) is a test in which a clinician takes a videotaped X-ray of the entire swallowing process by having you consume several foods or liquids along with the mineral barium to improve visibility of the digestive tract.
Aug 21, · I've had difficulty swallowing for at least 5 years now and had a videofluoroscopic swallow study done (VFSS). They put barium in different . The objective of the present study was to report the role of videofluoroscopic swallow study (VFSS) and to determine the subsequent treatment of dysphagia in TCS based on the VFSS findings.