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Fusion Imaging–Guided Percutaneous Biopsy of Focal Hepatic Lesions With Poor Conspicuity on Conventional Sonography
Author(s) -
Park Hyun Jeong,
Lee Min Woo,
Lee Mi Hee,
Hwang Jiyoung,
Kang Tae Wook,
Lim Sanghyeok,
Rhim Hyunchul,
Lim Hyo K.
Publication year - 2013
Publication title -
journal of ultrasound in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 91
eISSN - 1550-9613
pISSN - 0278-4297
DOI - 10.7863/ultra.32.9.1557
Subject(s) - medicine , radiology , percutaneous , biopsy , target lesion , magnetic resonance imaging , lesion , image fusion , pathology , fusion , linguistics , philosophy , psychiatry , percutaneous coronary intervention , myocardial infarction
Objectives The purpose of this study was to evaluate the effectiveness of real‐time fusion imaging (sonography combined with computed tomography or magnetic resonance imaging) for percutaneous sonographically guided biopsy of focal hepatic lesions with poor sonographic conspicuity. Methods This study was conducted as a retrospective analysis of a prospective database and was approved by the Institutional Review Board. Patients who had target lesions with poor conspicuity on B‐mode sonography for percutaneous biopsy were enrolled in the study. Lesion conspicuity was assessed by conventional B‐mode sonography first and then by fusion imaging later in the same session. We compared lesion conspicuity and detection rates between B‐mode sonography and fusion imaging and evaluated how many cases of initially invisible lesions on B‐mode sonography became visible on fusion imaging. The technical success rate was evaluated on the basis of the final diagnoses, which were established by pathologic examination of the biopsy specimens as well as follow‐up clinical and radiologic examinations. Results A total of 22 patients were enrolled in the study. On fusion imaging, lesion conspicuity was increased in 63.6% of focal hepatic lesions (14 of 22). Moreover, 66.7% of lesions (6 of 9) that were invisible on B‐mode sonography became visible on fusion imaging. The true‐positive detection rate was significantly different between B‐mode sonography and fusion imaging (9 of 22 versus 19 of 22; P = .0044). Percutaneous biopsy was performed for all lesions, including 3 target lesions that were invisible even on fusion imaging. The technical success rate was 95.5% (21 of 22). Conclusions Fusion imaging is effective for percutaneous biopsy of focal hepatic lesions with poor sonographic conspicuity.