Abstract:
RATIONALE AND OBJECTIVES:This study assesses the ability of a cardiac-gated phase-contrast magnetic resonance imaging (MRI) technique to measure renal blood flow (RBF) noninvasively in humans. METHODS:In nine normal volunteers, total RBF in the renal arteries and in the left renal vein was estimated by MRI and correlated with RBF determined by the clearance of para-aminohippuric acid (CPAH) and the hematocrit level. RESULTS:Correlation of RBF estimated from left renal vein flow, with RBF by CPAH-hematocrit, yielded r = .86 (P less than .003). Repeated measurement of RBF by MRI demonstrated a high degree of reproducibility, with coefficients of variation ranging from 4.8% to 8.9%. However, the MRI measurements of arterial flow did not significantly correlate with the standard measurements. CONCLUSIONS:Reproducible noninvasive measurement of normal RBF is possible with the phase-contrast MRI technique used to measure renal venous blood flow.
journal_name
Invest Radioljournal_title
Investigative radiologyauthors
Sommer G,Noorbehesht B,Pelc N,Jamison R,Pinevich AJ,Newton L,Myers Bdoi
10.1097/00004424-199206000-00012keywords:
subject
Has Abstractpub_date
1992-06-01 00:00:00pages
465-70issue
6eissn
0020-9996issn
1536-0210journal_volume
27pub_type
杂志文章abstract:OBJECTIVE:To demonstrate a method of assessing radiologic diagnostic agreement utilizing multiple blinded external readers. METHODS:Six body CT studies interpreted by one reader (primary reader) at the host institution were compiled with patient identifiers removed. Brief clinical histories that were available to the ...
journal_title:Investigative radiology
pub_type: 杂志文章
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更新日期:2010-04-01 00:00:00
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journal_title:Investigative radiology
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更新日期:2005-11-01 00:00:00
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journal_title:Investigative radiology
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abstract:RATIONALE AND OBJECTIVES:To compare gadobenate dimeglumine (Gd-BOPTA) with gadopentetate dimeglumine (Gd-DTPA) for magnetic resonance imaging of the liver. METHODS:The contrast agent Gd-BOPTA or Gd-DTPA was administered at a dose of 0.1 mmol/kg to 257 patients suspected of having malignant liver tumors. Dynamic phase ...
journal_title:Investigative radiology
pub_type: 临床试验,杂志文章,随机对照试验
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abstract:RATIONALE AND OBJECTIVES:To compare the visibility and localization of extratemporal cortical lesions in extratemporal epilepsy by using curved reconstruction (CR) and three-dimensional surface rendering (3D SR) of 3D-acquired MR images and to study the degree of confidence with which localizations are made, particular...
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更新日期:1994-08-01 00:00:00
abstract:RATIONALE AND OBJECTIVE:To estimate the sensitivity to find small coronary artery calcium lesions with use of different slice widths with electron beam tomography. MATERIALS AND METHODS:Two studies were performed. Study 1 utilized double scanning of a stationary cork phantom with three different slice thickness (1.5, ...
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journal_title:Investigative radiology
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更新日期:1993-11-01 00:00:00
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journal_title:Investigative radiology
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journal_title:Investigative radiology
pub_type: 临床试验,杂志文章,随机对照试验
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更新日期:1986-11-01 00:00:00
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journal_title:Investigative radiology
pub_type: 临床试验,杂志文章
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更新日期:2001-06-01 00:00:00
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更新日期:2001-02-01 00:00:00
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更新日期:1991-03-01 00:00:00
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更新日期:1992-07-01 00:00:00
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journal_title:Investigative radiology
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更新日期:1987-07-01 00:00:00
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journal_title:Investigative radiology
pub_type: 杂志文章
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更新日期:1994-10-01 00:00:00
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journal_title:Investigative radiology
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更新日期:2010-06-01 00:00:00
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pub_type: 杂志文章
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更新日期:1984-11-01 00:00:00
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更新日期:1990-08-01 00:00:00
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更新日期:2009-09-01 00:00:00