Novel High Spatiotemporal Resolution Versus Standard-of-Care Dynamic Contrast-Enhanced Breast MRI
| Autor: | Kang Wang, Roberta M. Strigel, Wendy B. DeMartini, Courtney K. Morrison, James H. Holmes, Leah C. Henze Bancroft, Frank R. Korosec, Ryan J. Bosca |
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| Rok vydání: | 2017 |
| Předmět: |
Adult
Standard of care Computer science Image quality Contrast Media Breast Neoplasms Signal-To-Noise Ratio Article 030218 nuclear medicine & medical imaging 03 medical and health sciences 0302 clinical medicine Distortion Image Interpretation Computer-Assisted medicine Humans Breast MRI Radiology Nuclear Medicine and imaging Breast Image resolution Aged medicine.diagnostic_test business.industry Resolution (electron density) Reproducibility of Results General Medicine Middle Aged Image Enhancement Magnetic Resonance Imaging Signal-to-noise ratio (imaging) 030220 oncology & carcinogenesis Temporal resolution Female Artifacts Nuclear medicine business |
| Zdroj: | Investigative Radiology. 52:198-205 |
| ISSN: | 1536-0210 0020-9996 |
| DOI: | 10.1097/rli.0000000000000329 |
| Popis: | Objective Currently, dynamic contrast-enhanced (DCE) breast magnetic resonance imaging (MRI) prioritizes spatial resolution over temporal resolution given the limitations of acquisition techniques. The purpose of our intrapatient study was to assess the ability of a novel high spatial and high temporal resolution DCE breast MRI method to maintain image quality compared with the clinical standard-of-care (SOC) MRI. Materials and methods Thirty patients, each demonstrating a focal area of enhancement (29 benign, 1 cancer) on their SOC MRI, consented to undergo a research DCE breast MRI on a second date. For the research DCE MRI, a method (DIfferential Subsampling with Cartesian Ordering [DISCO]) using pseudorandom k-space sampling, view sharing reconstruction, 2-point Dixon fat-water separation, and parallel imaging was used to produce images with an effective temporal resolution 6 times faster than the SOC MRI (27 vs 168 seconds, respectively). Both the SOC and DISCO MRI scans were acquired with matching spatial resolutions of 0.8 × 0.8 × 1.6 mm. Image quality (distortion/artifacts, resolution, fat suppression, lesion conspicuity, perceived signal-to-noise ratio, and overall image quality) was scored by 3 radiologists in a blinded reader study. Results Differences in image quality scores between the DISCO and SOC images were all less than 0.8 on a 10-point scale, and both methods were assessed as providing diagnostic image quality in all cases. DISCO images with the same high spatial resolution, but 6 times the effective temporal resolution as the SOC MRI scans, were produced, yielding 20 postcontrast time points with DISCO compared with 3 for the SOC MRI, over the same total time interval. Conclusions DISCO provided comparable image quality compared with the SOC MRI, while also providing 6 times faster effective temporal resolution and the same high spatial resolution. |
| Databáze: | OpenAIRE |
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