European journal of radiology
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Clinical Trial
Role of ultrasound-guided core needle biopsy of axillary lymph nodes in the initial staging of breast carcinoma.
To evaluate the role of US-guided core biopsy in detection of metastatic axillary lymph nodes in preoperative staging of breast cancer. ⋯ Ultrasonographically detected lymph nodes can be easily assessed by US-guided biopsy. Core biopsy is a reliable and easily performed method without significant complications.
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(a) To measure the absorbed dose at certain anatomical sites of a RANDO phantom and to estimate the effective dose in radiographic imaging of the jaws using low dose Cone Beam computed tomography (CBCT) and (b) to compare the absorbed and the effective doses between thyroid and cervical spine shielding and non-shielding techniques. ⋯ The use of CBCT for maxillofacial imaging results in a reduced absorbed and effective dose. The use of lead shielding leads to a further reduction of the absorbed doses of thyroid and cervical spine, as well as the effective dose.