[On picture quality in radiology. II. Semi-objective measurement of picture quality, blurred picture].
Explore the source record for details and available documents.
Biomedical subjects
Publications and source records attributed to W Angerstein.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Magnetic resonance imaging was used to analyze functional positions of the tongue and soft palate in 10 patients and 10 healthy volunteers. The patients had velopharyngeal insufficiency and/or dysfunction of the tongue. With snapshot FLASH (fast low-angle shot) sequences (data acquisition time, less than 1 second), malpositions of the articulatory apparatus were imaged and recorded for follow-up documentation.
The sucking procedure was examined in 10 healthy, term infants and in one newborn with disturbed sucking actions suffering from recurrent aspiration pneumonia. We applied ultrasonography of the tongue and simultaneous intraoral pressure measurements in the examinations. Observations were made with a bottle feeding system (NUK). Sonography and intraoral measurements both gave reliable informations. Parallel recordings of tongue dorsum movements by pseudo-3-dimensional imaging and simultaneously obtained pressure curves show, that increasing suction is maintained by withdrawing the tongue dorso-cranially. Computer-aided evaluation of ultrasound images and pressure data demonstrate the possibility to distinguish between coordinated and uncoordinated sucking movements. Simultaneous use of both examination techniques can be helpful in diagnosis and documentation of disturbed sucking actions.
Explore the source record for details and available documents.