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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

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It has been hypothesized that intraluminal thrombus (ILT) fragmentation may underlie rupture of abdominal aortic aneurysms (AAAs) (1,2). This hypothesis is based on the  theory that disruption of the ILT structure erases its shielding effect and permits the passage of blood onto the underlying wall, which may cause it to rupture. Bleeding into the thrombus seen on computed tomography (CT) examinations precedes aneurysm rupture in many cases (1,3,4). Dissecting blo od gives rise to high peripheral attenuation (crescent sign), which indicates urgent need for intervention (3,4).
Source: Journal of Vascular and Interventional Radiology : JVIR - Category: Radiology Authors: Tags: Letter to the Editor Source Type: research
Conclusion Glomus tumors are rare submucosal tumors of the stomach, and they should be considered in the differential diagnosis of gastric submucosal tumors. LECS could be a less invasive and effective method for treatment of gastric glomus tumor.
Source: International Journal of Surgery Case Reports - Category: Surgery Source Type: research
Conclusion Endovascular management of a traumatic renal arterial injury is the best approach to preserve renal function in hemodynamically stable patients who cannot tolerate laparotomy, due to risks associated with general anesthesia, and who can tolerate anticoagulation therapy.
Source: International Journal of Surgery Case Reports - Category: Surgery Source Type: research
BackgroundSimultaneous acquisition of magnetic resonance angiography (MRA) and diagnostic images is challenging in contrast‐enhanced upper abdominal MRI. PurposeTo evaluate the image quality of MRA of the abdomen acquired simultaneously with diagnostic MR images, and to compare the contrast effect, conspicuity of aortic branches, and pancreatic lesions in MRA between gadobutrol and gadoterate meglumine. Study TypeProspective. PopulationEighty‐eight patients with known and suspected upper abdominal disease. Field Strength/Sequences3T/4D‐eTHRIVE (T1‐weighted fat‐suppressed 3D fast gradient echo) for multiarterial p...
Source: Journal of Magnetic Resonance Imaging - Category: Radiology Authors: Tags: Original Research Source Type: research
CONCLUSION: The subjective and clinical features in this case series of SCDS patients were heterogeneous. However, objective oVEMP testing had the highest diagnostic value. Furthermore, we describe a new diagnostic clinical sign: fremitus nystagmus. PMID: 29242950 [PubMed - as supplied by publisher]
Source: HNO - Category: ENT & OMF Tags: HNO Source Type: research
Authors: Kitajima K, Nakajo M, Kaida H, Minamimoto R, Hirata K, Tsurusaki M, Doi H, Ueno Y, Sofue K, Tamaki Y, Yamakado K Abstract Positron emission tomography/computed tomography (PET/CT) integrated with 2-[18F]fluoro-2-deoxy-D-glucose (FDG) is a useful tool for acquisition of both glucose metabolism and anatomic imaging data, as only a single device and one diagnostic session is required, thus opening a new field in clinical oncologic imaging. FDG-PET/CT has been successfully used for initial staging, restaging, assessment of early treatment response, evaluation of metastatic disease response, and prognostication...
Source: Nagoya Journal of Medical Science - Category: International Medicine & Public Health Tags: Nagoya J Med Sci Source Type: research
Conclusions Our study suggests that specific features of an open-cell stent allow a safe and effective treatment of OA or AChA aneurysms with a high technical success rate and excellent mid-term angiographic and clinical outcome. CBCT is a useful intraoperative imaging tool. PMID: 29239687 [PubMed - as supplied by publisher]
Source: Interventional Neuroradiology - Category: Radiology Tags: Interv Neuroradiol Source Type: research
Authors: Hackenbroch C, Riesner HJ, Lang P, Stuby F, Beer M, Friemert B, Palm HG, AG Becken III Abstract Dual energy computed tomography (DECT) is a constantly evolving technology, which opens up new diagnostic possibilities. It is particularly valuable for musculoskeletal (MSK) imaging. Due to the lack of recognition and availability of dual energy scanners, routine use is only established in a few centres. The intention of this review is to show the possibilities and fields of applications of the DECT in MSK imaging, as well as to describe technical principles and typical indications. We mainly focus on the use o...
Source: Zeitschrift fur Orthopadie und Unfallchirurgie - Category: Orthopaedics Tags: Z Orthop Unfall Source Type: research
Conclusions In follow-up examinations after TEVAR, CTA with ultra-low radiation exposure and CM dose is feasible using low tube voltage and IMR for nonobese patients.
Source: Academic Radiology - Category: Radiology Source Type: research
Conclusions Shrapnel, foreign bodies, gas-related pathologies, pelvic fluid and fractures, excluding rib fractures, are detected more often by post-mortem CT. It is important to consider PMCT as a tool in the evaluation of specific tissues and organs, possibly providing solid answers, or at least directing the team in the performance of the autopsy.
Source: Journal of Forensic Radiology and Imaging - Category: Radiology Source Type: research
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