Log in to search using one of your social media accounts:


Measurement of Pharyngo-laryngeal Volume During Swallowing Using 320-Row Area Detector Computed Tomography

This study aimed to (1) evaluate changes in bolus and air volumes in the pharyngo-laryngeal cavity during swallowing and (2) determine how differences in these volumes during swallowing are influenced by bolus amount using 320-row area detector computed tomography (320-ADCT). Three-, 10-, and 20-ml honey-thick liquids (5% w/v) were presented to ten healthy subjects placed in a 45 ° reclining position. 3D images were created in 29 phases at an interval of 0.1 s for 3.15 s. Changes in bolus and air volumes in the pharyngo-laryngeal cavity were calculated. The two one-sided tests were used to determine equivalency of the pharyngo-laryngeal volume of each event (i.e., onset o f hyoid elevation, soft palate closure, true vocal cord closure, closure of laryngeal vestibule, epiglottis inversion, pharyngo-esophageal sphincter opening) for each bolus volume. The pharyngo-laryngeal volume during swallowing was about 20 ml before swallowing. The volume temporarily increased wi th tongue loading, but decreased to about 0 ml with pharyngeal contraction. Subsequently, the volume returned to the original volume after airway opening. Most of the air was released from the pharyngo-laryngeal space before the bolus flowed into the esophagus during swallowing. As the bolus volume to be swallowed increased, the maximal pharyngo-laryngeal volume increased, but changes in air volume remained constant. 320-ADCT allowed for analysis of dynamic volume changes in the pharyngo-la...
Source: Dysphagia - Category: Speech-Language Pathology Source Type: research

Related Links:

A 60-year-old man with hepatitis C underwent chemoembolization of a 4.2  × 5.0-cm segment IVa hepatocellular carcinoma (Fig 1). Doxorubicin, mitomycin, Lipiodol (Guerbet, Roissy, France), and 200–300-μm polyvinyl alcohol particles were used to embolize the tumor on two occasions. Immediately after the second procedure, he experienced nausea, vomiting, and epigastr ic pain. Computed tomography (CT) performed on postprocedure day 13 demonstrated a gastric wall perforation with subhepatic collection (Fig 2), which was possibly a result of unseen right gastric artery nontarget embolization.
Source: Journal of Vascular and Interventional Radiology : JVIR - Category: Radiology Authors: Tags: Images in IR Source Type: research
Conclusion: Intraocular hemorrhage has previously been described in association with intracranial hemorrhage and in particular subarachnoid hemorrhage (Terson syndrome). We describe a similar clinical picture in the context of cerebral venous sinus thrombosis with no associated intracranial hemorrhage.
Source: Retinal Cases and Brief Reports - Category: Opthalmology Tags: Case Report Source Type: research
Topline results seem to give support to Blue Earth Diagnostics’ test to help impact treatment decisions for patients. The Burlington, MA-based company presented results from the LOCATE investigational trial at the American Urology Association’s annual meeting. LOCATE is a prospective, multi-center, open label study conducted at 15 sites in the U.S. The study’s primary endpoint measured the percentage of men with suspected biochemical recurrence of prostate cancer following initial prior therapy whose treatment plan was changed following Blue Earth Diagnostics’ 18F fluciclovine PET/CT scan. The ...
Source: MDDI - Category: Medical Devices Authors: Tags: Imaging Source Type: news
Fabricio Guerrero Ortiz, Esther Berástegui JimenoJournal of Conservative Dentistry 2018 21(3):238-242Endodontic treatments have as their objective the appropriate sealing of the space caused by the root canal, providing a complete seal of the canal in all dimensions, creating an airtight seal against fluids. Thus, endodontic cements must possess physical properties such as solubility and long-term dimensional stability. An electronic search in the main endodontic magazines using appropriate keywords to identify studies that investigated the porosity of endodontic materials using micro-computed tomography. Of the 125 s...
Source: Journal of Conservative Dentistry - Category: Dentistry Authors: Source Type: research
ConclusionsSurgical resection might offer better long-term survival to patients with synchronous pulmonary metastasis from distant cholangiocarcinoma than nonsurgical treatments. Pulmonary metastasis from distal cholangiocarcinoma may exhibit a lepidic pattern. Therefore, because of the possibility of synchronous pulmonary metastasis, pulmonary resection should be considered for patients with lepidic lesions who have been diagnosed with distal cholangiocarcinoma.
Source: Journal of Medical Case Reports - Category: General Medicine Source Type: research
Conclusion: Coronal dentin was conserved in molars when accessed through conservative than through conventional. The dentin conservation afforded an increased resistance to fracture in conservative group which is doubled the fracture resistance in conventional group.
Source: Journal of Conservative Dentistry - Category: Dentistry Authors: Source Type: research
Shaik Izaz, Bhargavi Dasari, Nagesh Bolla, Prasanna NeelakantanJournal of Conservative Dentistry 2018 21(3):344-347Clinicians proceed the canal exploration according to the literature so far reported. At times, there are apparent variations in the teeth. These discrepancies should be thoroughly surveyed and piled up to date. One such rare complexity of canal morphology was discussed in the present case. A 48-year-old female patient referred to the endodontic clinic for full-mouth rehabilitation. On intraoral hard-tissue examination, decay was noted in multiple teeth which were confirmed by an orthopantomogram and endodonti...
Source: Journal of Conservative Dentistry - Category: Dentistry Authors: Source Type: research
ABSTRACT Objective: To determine the relationship between symphysis dimensions and alveolar bone thickness (ABT) of the mandibular anterior teeth. Methods: Cone-beam computed tomography images of 51 patients were collected and measured. The buccal and lingual ABT of the mandibular anterior teeth was measured at 3 and 6 mm apical to the cemento-enamel junction (CEJ) and at the root apices. The symphysis height and width were measured. The symphysis ratio was the ratio of symphysis height to symphysis width. Kendall ’ s tau correlation coefficient was used to determine the relationships between the variables at a 0.05 ...
Source: Dental Press Journal of Orthodontics - Category: Dentistry Source Type: research
Abstract Objective: To evaluate the absorption/fluid uptake, solubility and porosity of White mineral trioxide aggregate (MTA) Angelus, Biodentine (BIO), and zinc oxide-eugenol (ZOE). Material and Methods: Solubility was evaluated after immersion in distilled water for 7 and 30 days. Porosity was evaluated using digital inverted microscope, scanning electron microscope (SEM) and micro-computed tomography (micro-CT). For the fluid uptake test, specimens were immersed in Hank's balanced salt solution (HBSS) for 1, 7, 14 and 28 days. Fluid absorption, solubility and porosity of the materials were measured after each period. S...
Source: Journal of Applied Oral Science - Category: Dentistry Source Type: research
We present a case study of 56-year-old female patient who suffered from a psychotic depression and cognitive impairment. Before ECT, she took several antidepressants and atypical antipsychotics, but there was no improvement in her symptoms. By using single-photon emission computed tomography, we obtained the status of the regional cerebral blood flow and found a decreased perfusion in the anterior part of the left temporal lobe, the posterior part of the right temporal lobe, and in the left gyrus frontalis inferior. This is consistent with previous findings. Electroconvulsive therapy resulted in a resolution of the patient...
Source: The Journal of ECT - Category: Psychiatry Tags: Case Report Source Type: research
More News: CT Scan | Honey | Speech-Language Pathology | Study