Type:
Educational Exhibit
Keywords:
Pathology, Imaging sequences, CAD, Biopsy, MR-Diffusion/Perfusion, Mammography, MR, Thorax, Neuroradiology spine, Breast, Inflammation, Musculoskeletal spine
Authors:
N. Xing, A. L. Zhabg; Beijing/CN
DOI:
10.1594/ecr2012/C-1436
Imaging findings OR Procedure details
A retrospective review revealed 6 consecutive nonpalpable,
mammographically occult MRI-detected breast lesions scheduled for MRI-guided vacuum-assisted biopsy.
Biopsy was performed with a 8-gauge vacuum-assisted biopsy probe (Mammotome Systems).
1.5T MR scanner (Signa,
GE Healthcare) and a dedicated breast surface coil and breast biopsy device are used.
Patients were placed in the prone position in a dedicated phased-array. The breast is stabilized in a biopsy guidance grid by providing moderate compression.
The grid comprised a gadolinium-filled guiding marker.
The pressure to fix the breast should be moderate,
because high pressure will change the blood supply to the breast and the lesion. After localizing sequences are acquired,
post-contrast-enhanced sagittal images are performed to confirm the persistence of the enhancing lesion noted on the prior diagnostic MRI.
The data were transferred to the workstation (DynaCAD 2.0,
Invivo).
The puncture site and the depth were automatically calculated by the workstation.
Medical records and histologic findings were reviewed. In the case of benign biopsy results,
a 6-month follow-up MRI should be performed.
Among 6 lesions,
biopsy was cancelled in 1 case,
because the lesion was too superficial to be localized by the workstation.
Of the remaining 5 lesions,
tissue was successfully acquired.
The median number of specimens obtained was 12 (range,
6–20).
The median time to perform MRI-guided biopsy was 45 min for one lesion (range,
30-55min).
Histological results in 5 lesions were infiltrating duct carcinoma in 1,
adenosis in 2,
intraductal papilloma in 1,
fibroadenosis with ductal ectasia in 1.