Abstract:
OBJECTIVE:To investigate the feasibility and handling of abdominal MRI-guided biopsies in a 3-T MRI system. METHODS:Over a 1-year period, 50 biopsies were obtained in 47 patients with tumours of the upper abdominal organs guided by 3-T MRI with a large-bore diameter of 70 cm. Lesions in liver (47), spleen (1) and kidney (2) were biopsied with a coaxial technique using a 16-G biopsy needle guided by a T1-weighted three-dimensional gradient recalled echo volumetric interpolated breath-hold examination (T1w-3D-GRE-VIBE) sequence. Sensitivity, specificity, accuracy, complication rate, interventional complexity, room/intervention time and needle artefacts were determined. RESULTS:A sensitivity of 0.93, specificity of 1.0 and accuracy of 0.94 were observed. Three patients required a rebiopsy. There was a minor complications rate of 13.6%, and no major complications were observed. Histopathology revealed 38 malignant lesions, and 3-month follow-up confirmed 9 benign lesions. Mean lesion diameter was 3.4 ± 3.1 cm (50% being smaller than 2 cm). Mean needle tract length was 10.8 ± 3.3 cm. Median room time was 42.0 ± 19.8 min and intervention time 9.3 ± 8.1 min. Needle artefact size was about 9-fold greater for perpendicular access versus access parallel to the main magnetic field. CONCLUSION:Biopsies of the upper abdomen can be performed with great technical success and easy handling because of the large-bore diameter. The MRI-guided biopsy needle had an acceptable susceptibility artefact at 3 T. However future research must aim to reduce the susceptibility effects of the biopsy systems.
journal_name
Eur Radioljournal_title
European radiologyauthors
Kühn JP,Langner S,Hegenscheid K,Evert M,Kickhefel A,Hosten N,Puls Rdoi
10.1007/s00330-010-1809-4subject
Has Abstractpub_date
2010-10-01 00:00:00pages
2414-21issue
10eissn
0938-7994issn
1432-1084journal_volume
20pub_type
杂志文章abstract::The aim of this study was to revisit anal anatomy, to explain surgical terminology in perianal complications of Crohn disease, and to show the MR imaging findings of perianal fistulas and abscesses. To this end more than 200 patients were studied using surface coils (Helmholtz; phased array) at 1.0 and 1.5 T. Transver...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s003300050248
更新日期:1997-01-01 00:00:00
abstract:OBJECTIVES:It is challenging to early differentiate biliary atresia from other causes of cholestasis. We aimed to develop an algorithm with risk stratification to distinguish biliary atresia from infantile cholestasis. METHODS:In this study, we enrolled infants with cholestasis into 2 subgroups from January 2010 to Ap...
journal_title:European radiology
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journal_title:European radiology
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abstract::Our purpose was to assess the effect of computer-aided detection (CAD) on lesion detection as a second reader in computed tomographic colonography, and to compare the influence of CAD on the performance of readers with different levels of expertise. Fifty-two CT colonography patient data-sets (37 patients: 55 endoscop...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-007-0608-z
更新日期:2007-10-01 00:00:00
abstract::The purpose of this study was to evaluate the diagnostic utility of sonoelastography in differentiating benign from malignant non-palpable breast lesions. A total of 293 BI-RADS 3-5 (Breast Imaging Reporting And Data System) impalpable breast lesions in 278 women was evaluated with B-mode ultrasound (US) and subsequen...
journal_title:European radiology
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pub_type: 杂志文章,多中心研究
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更新日期:2002-02-01 00:00:00
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journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s003300051044
更新日期:2000-01-01 00:00:00
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更新日期:1999-01-01 00:00:00
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更新日期:2002-12-01 00:00:00
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journal_title:European radiology
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