PubMed · 9821916
The source did not provide an abstract. Follow the original record for more information.
Explore connections, maps & timelines
M W Chang. 1998. Bolus aggregation.. https://doi.org/10.1016/s0003-9993(98)90251-9
Cite the original work for its findings. Save a collection to share your selection of sources.
KEEP EXPLORING
A projection reconstruction multi-gradient-echo (prMGE) technique is presented. The introduced technique is an extension of a standard projection reconstruction steady-state gradient-echo technique allowing for the acquisition of several gradient echoes after each excitation of the spin system. Each echo train is used for acquiring data of a certain angular segment of k-space. By use of echo trains consisting of up to four echoes, the overall acquisition time for a 128(2) image can be reduced to 150 ms without sacrificing image quality. Results are presented for cardiac fluoroscopy, for the visualization of swallowing, and for the visualization of joint motion. For all investigated applications promising results have been obtained. Especially in parts of the body where motion on an even shorter time scale than the acquisition process or significant in-plane or through-plane flow are within the field of view, the introduced technique appears to be a promising technique for MR fluoroscopy. Magn Reson Med 42:324-334, 1999.
BACKGROUND: We routinely observed "isolated" laryngeal penetration (ILP) on upper GI studies in infants with no risk for aspiration. OBJECTIVE: To determine whether "isolated" LP (LP during the pharyngeal phase of swallowing) is a benign process in infants and therefore not a predictor of aspiration as it is known to be in adults. PATIENTS AND METHODS: Two radiologists retrospectively reviewed videotaped upper GI studies done over a 2-year period on patients less than 2 years of age. A total of 110 studies was reviewed, which produced a study group of 34 patients who had no history or clinical suspicion for swallowing dysfunction. RESULTS: Of the 34 patients in the group, 33 demonstrated ILP without radiographic or clinical evidence of aspiration. CONCLUSION: ILP is a benign, normal process in infants likely due to immaturity of the swallowing mechanism. It is not a reliable predictor of aspiration as it is in adults.
BACKGROUND: Feeding difficulties in the newborn period are a common indication for an upper gastrointestinal (UGI) series. OBJECTIVE: To review the radiological findings in infants with feeding-related difficulties, with no other medical problems, and to evaluate the role, if any, of the videofluoroscopic swallowing study (modified barium swallow, MBSW). MATERIALS AND METHODS: We retrospectively reviewed all the UGI and MBSW studies performed at our institution over a 5-year period in infants under 1 month of age. We found a total of 77 patients referred for feeding-related problems. RESULTS: All patients had at least one UGI study performed at our institution, and 17 patients had at least one additional MBSW. The most frequently found abnormality that could directly account for the patients' symptoms was swallowing dysfunction. This was detected in 19 patients; in 10 of these patients the swallowing dysfunction was seen only on the MBSW. CONCLUSION: Swallowing dysfunction with aspiration is a common cause of feeding-related difficulties in childhood. In infants with feeding difficulties, a MBSW may demonstrate aspiration when the UGI is negative.