Chest, Thyroid, Parathyroid and Neonatal Brain Ultrasound Flashcards
Air-filled lung interface is seen within 1cm of the rib echo as a bright echogenic surface that moves with respiration
Visceral pleura - gliding sign
Organs beneath the diaphragm are artifactually reproduced above the diaphragm due to multipath sound reflection
Mirror image artifact
Superior and anterior mediastinum are effectively evaluated with ultrasound using
Parasternal and supramanubrial approach
Most common decision algorithm in current use in thyroid
TI-RADS
Normal size of thyroid
5 x 2 x 2 cm
Superior thyroid artery and vein are imaged between
Upper pole of the thyroid and the longus colli
Recurrent laryngeal nerve and inferior thyroid artery and vein
Posterior to lower lobes
Primary indication for parathyroid imaging
Preoperative localization of parathyroid adenomas or hyperplastic parathyroid glands
Most sensitive and accurate
Radionuclide imaging
Normal parathyroid glands measurement
5 x 3 x 1 mm
Routine cranial sonograms are performed through the ___ in neonates
Anterior fontanelle
Anterior fontanelle remains open until ___ years
2 years of age
Transducers preffered for cranial ultrasound
High frequency (5-10 MHz)