Breast Thickness and Lesion Depth Measurement28J HK Coll Radiol 20036 - PDF document

Breast Thickness and Lesion Depth Measurement28J HK Coll Radiol 2003;6:28-29 J HK Coll Radiol 2003;6:28-29 TECHNICAL NOTE Small or thin breasts present a common problem withAsian population. The breast needs to be of sufficientIn addition, the lesion to be biopsied must be at aments are not readily available on conventional stereo-tactic add-on erect biopsy systems as opposed toand accurate method to obtain these 2 measurementsto determine the feasibility of erect stereotactic biopsyical Systems, Milwaukee, USA) with a 3-dimensionalis used to localise the lesion under stereotactic guidance.unit become 0. The needle is advanced verticallyuntil it touches the skin. The distance from the needle involved. Therefore, accurate measurement while thethe distance between the compression

plate and thepression plate itself and the bulging of breast tissueAnother method that we have tried involves obtainingprinciples. This method is accurate and requires noradiographs were needed in this situation, leadingto increases in radiation dose and examination time forWhen the breast thickness is found to be insufficientfor stereotactic core biopsy, manoeuvres to increasealternative biopsy methods, including fine needle as-or hook-wire biopsy, should be considered. One shouldRadiol 1999;54:328-330
ZZZ +
Z Figure 1. Schematic diagram showing the needle position andthe deviation readouts when the breast thickness and lesion depthmeasurements are obtained.Abbreviations:Z = distance from tabletop;
Z = distance from skinsurface; Z +
Z = breast thickness at the biopsy path