DYNAMIC 3-DIMENSIONAL IMAGING WITH PARTIAL K-SPACE SAMPLING - INITIAL APPLICATION FOR GADOLINIUM-ENHANCED RATE CHARACTERIZATION OF BREAST-LESIONS

被引：39

作者：

CHENEVERT, TL ^{[1
]}

HELVIE, MA ^{[1
]}

AISEN, AM ^{[1
]}

FRANCIS, IR ^{[1
]}

ADLER, DD ^{[1
]}

ROUBIDOUX, MA ^{[1
]}

LONDY, FJ ^{[1
]}

机构：

[1] INDIANA UNIV HOSP,DEPT RADIOL,INDIANAPOLIS,IN 46202

来源：

RADIOLOGY | 1995年 / 196卷 / 01期

关键词：

BREAST; MR; BREAST NEOPLASMS; MAGNETIC RESONANCE (MR); K-SPACE;

D O I：

10.1148/radiology.196.1.7784556

中图分类号：

R8 [特种医学]; R445 [影像诊断学];

学科分类号：

1002 ; 100207 ; 1009 ;

摘要：

PURPOSE: To evaluate a method to monitor gadolinium enhancement patterns at magnetic resonance (MR) imaging with high temporal resolution and full coverage through both breasts. MATERIALS AND METHODS: In 12 patients with 13 masses, including nine carcinoma, nonenhanced three-dimensional MR imaging was performed with full-matrix resolution. At dynamic imaging, 32 serial passes were made during bolus administration of contrast material, and temporal resolution was reduced to 12 seconds by collecting the central (low spatial frequency) 32 x 16 or 16 x 16 phase-encode views. Full-matrix dynamic images were reconstructed by complementing central phase-encode data with precontrast data from peripheral high-spatial-frequency views. RESULTS: Results at time-course analysis with a mono-exponential saturation model indicated malignant lesions tend to show rapid (<60 seconds) contrast change relative to benign masses and normal tissues. One cancer displayed an exceptionally slow contrast change (260 seconds). CONCLUSION: The technical objectives of full tissue coverage, rapid temporal sampling, and quantification of enhancement curves are met with this method for certain lesions (>5 mm in largest diameter).

引用

页码：135 / 142

页数：8

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