However, scan times have been greatly reduced through the application of helical CT to IGPNB, and dynamic needle imaging became possible with development of real-time CT fluoroscopy.
MR guidance for IGPNB is appropriate for lesions that are not visible on other techniques.
A variety of needles are available for IGPNB, some with broad applicability and some very specialized.
Techniques for performing IGPNB differ by the type of instrument used to retrieve the sample and the type of tissue specimen needed for diagnosis of the suspected lesion.
For IGPNB in the thorax, Tarver recommends a coaxial system for smaller lesions and those that require extended imaging procedures for proper needle placement.
The final step in performing an IGPNB is proper handling, preparation and analysis of the specimen.
Although the procedural aspects discussed above represent the general IGPNB procedure, there are variations in technique for different body regions and organs.
86] However, techniques for IGPNB of the breast have been developed to reduce the need for surgical biopsy in some categories of abnormalities identified on breast imaging studies.
PCNB can be used as the primary method of IGPNB in the breast or as an adjunct to FNAB when findings are equivocal.
The choice of imaging technique for IGPNB of the breast is based on characteristics of the lesion, such as visibility, location or presence of calcifications, and experience or preference of the practitioner.
When sonography is used as a guidance technique for IGPNB of the breast, high-frequency (7.
Although stereotactic mammography and sonography guide the majority of IGPNB procedures in the breast, other techniques have been used successfully.