دورية أكاديمية
Improved 3-tesla cardiac cine imaging using wideband
| العنوان: | Improved 3-tesla cardiac cine imaging using wideband |
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| المؤلفون: | Lee, Hsu-Lei, Shankaranarayanan, Ajit, Pohost, Gerald M., Nayak, Krishna S. |
| بيانات النشر: | John Wiley & Sons |
| سنة النشر: | 2010 |
| المجموعة: | The University of Queensland: UQ eSpace |
| مصطلحات موضوعية: | Alternating repetition, Balanced SSFP, Cardiac ventricular function, Cine imaging, Wideband SSFP, 2741 Radiology Nuclear Medicine and imaging |
| الوصف: | Cine balanced steady-state free precession (SSFP) is the most widely used sequence for assessing cardiac ventricular function at 1.5 T because it provides high signal-to-noise ratio efficiency and strong contrast between myocardium and blood. At 3 T, the use of SSFP is limited by susceptibility-induced off-resonance, resulting in either banding artifacts or the need to use a short-sequence pulse repetition time that limits the readout duration and hence the achievable spatial resolution. In this work, we apply wideband SSFP, a variant of SSFP that uses two alternating pulse repetition times to establish a steady state with wider band spacing in its frequency response and overcome the key limitations of SSFP. Prospectively gated cine two-dimensional imaging with wide-band SSFP is evaluated in healthy volunteers and compared to conventional balanced SSFP, using quantitative metrics and qualitative interpretation by experienced clinicians. We demonstrate that by trading off temporal resolution and signal-to-noise ratio efficiency, wideband SSFP mitigates banding artifacts and enables imaging with approximately 30% higher spatial resolution compared to conventional SSFP with the same effective band spacing. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| تدمد: | 0740-3194 1522-2594 |
| العلاقة: | orcid:0000-0001-5509-5199; R21-HL079987; 0435249N |
| الإتاحة: | https://doi.org/10.1002/mrm.22384Test https://espace.library.uq.edu.au/view/UQ:686655Test |
| رقم الانضمام: | edsbas.8531A478 |
| قاعدة البيانات: | BASE |
| تدمد: | 07403194 15222594 |
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