Abstract:
OBJECTIVES:To prospectively evaluate accuracy of biliary anatomy depiction and quality of biliary tract visualization of magnetic resonance cholangiography (MRC) at 3.0 T in living potential liver donors (LPLDs). MATERIALS AND METHODS:Our institutional review board approved this study and did not require patient's informed consent. Thirty-three LPLDs underwent MRC at 3.0-T magnetic resonance and intraoperative cholangiography as the reference standard. MRC protocol included breath-hold rapid acquisition with relaxation enhancement (RARE) and respiratory-triggered 3-dimensional turbo spin-echo (TSE) T2-weighted sequence. Two readers independently analyzed 2 MRC image sets with a 2-week interval for delineating biliary anatomy and scoring degree of visualization of biliary branches with a 4-point scale, and recorded the number of visible third-order branches. One month later, both readers independently evaluated combined both MRC image set to assess biliary anatomy. RESULTS:Biliary anatomy was correctly depicted by RARE sequence in 28 (84.8%) and 26 LPLDs (78.8%), by TSE sequence in 27 (81.8%) and 26 (78.8%), and by combined both sequences in 27 (81.8%) and 28 (84.8%), for readers 1 and 2, respectively. The mean second-order branch visualization scores for 2 readers were significantly higher for RARE images than for TSE (2.23 vs. 1.68, P = 0.02; 2.05 vs. 1.54, P = 0.02, respectively). The mean numbers of visible third-order branches were significantly higher for RARE images than TSE for both readers (4.36 vs. 3.04, P = 0.03; 4.72 vs. 3.32, P = 0.03, respectively). CONCLUSIONS:In LPLDs, MRC at 3.0 T with both RARE and TSE sequences enables accurate depiction of biliary anatomy. RARE sequence more clearly visualizes second- and third-order biliary branches than TSE sequence.
journal_name
Invest Radioljournal_title
Investigative radiologyauthors
Kim SY,Byun JH,Hong HS,Choi EK,Lee SS,Park SH,Lee MGdoi
10.1097/RLI.0b013e31817e9b52subject
Has Abstractpub_date
2008-08-01 00:00:00pages
594-602issue
8eissn
0020-9996issn
1536-0210pii
00004424-200808000-00008journal_volume
43pub_type
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journal_title:Investigative radiology
pub_type: 杂志文章
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abstract::Proposed causes of renal papillary necrosis (RPN) include tubular toxicity due to hyperconcentration of toxins in the renal medulla and vasoconstriction of medullary vessels with ischemic necrosis. The authors studied these mechanisms in bromoethylamine hydrobromide-induced RPN in rats by microvascular and tubular mic...
journal_title:Investigative radiology
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abstract:RATIONALE AND OBJECTIVES:To establish a pig model suitable for imitating pulmonary emboli to facilitate research in the diagnosis of pulmonary embolism. METHODS:Thirteen animals were anesthetized, mechanically ventilated, and subjected to pulmonary artery catheterization initiated from the right external jugular vein....
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journal_title:Investigative radiology
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abstract::We evaluated the incidence of ventricular fibrillation with low-osmolality contrast media by right coronary arteriography in eleven adult mongrel dogs. Following insertion of the catheter into the right coronary artery, a test solution was infused for 25 seconds (total 11 mL) or until fibrillation occurred. The test s...
journal_title:Investigative radiology
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doi:10.1097/00004424-198904000-00008
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abstract::A feasibility study is described to provide quantitative texture measures to distinguish between normal lung, alveolar infiltrates and interstitial infiltrates. Advanced computer imaging technology and decision making processes were applied to distinguish between these textural patterns. The results, based on computer...
journal_title:Investigative radiology
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doi:10.1097/00004424-197807000-00005
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abstract::Erythrocytes at various concentrations were examined with a sensitive A-mode ultrasonic scanner; simultaneous measurements were made under light microscopic control. Individual erythrocytes caused weak (about 1 dB) echoes while erythrocyte aggregates (ten to 100 cells) produced stronger echoes (up to 15 dB), grossly p...
journal_title:Investigative radiology
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doi:10.1097/00004424-198508000-00014
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journal_title:Investigative radiology
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journal_title:Investigative radiology
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journal_title:Investigative radiology
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doi:10.1097/00004424-199804000-00008
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journal_title:Investigative radiology
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journal_title:Investigative radiology
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journal_title:Investigative radiology
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journal_title:Investigative radiology
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journal_title:Investigative radiology
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doi:10.1097/00004424-199402000-00007
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journal_title:Investigative radiology
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doi:10.1097/00004424-199403000-00004
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journal_title:Investigative radiology
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journal_title:Investigative radiology
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更新日期:2003-08-01 00:00:00
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