Utility of under-sampled scans with iterative reconstruction and high-frequency preserving transform for high spatial resolution magnetic resonance cholangiopancreatography.

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Tác giả: Kazuo Awai, Yoshitaka Bito, Dara Fonseca, Motoshi Fujimori, Toru Higaki, Yukiko Honda, Ikuo Kawashita, Shota Kondo, Shogo Maeda, Yuko Nakamura, Keigo Narita, Takashi Nishihara, Toru Shirai, Masahiro Takizawa

Ngôn ngữ: eng

Ký hiệu phân loại:

Thông tin xuất bản: Japan : Japanese journal of radiology , 2025

Mô tả vật lý:

Bộ sưu tập: NCBI

ID: 677906

PURPOSE: Under-sampled scans with iterative reconstruction and high-frequency preserving transform (Us-IRHF) can increase the acquisition speed without degrading the image quality by recovering image information from under-sampled data. We investigate the clinical applicability of high spatial resolution magnetic resonance cholangiopancreatography (MRCP) images without extending the scanning time using Us-IRHF. METHODS: A slit phantom was scanned with conventional- (without Us-IRHF), Us-IR- (without HF), and Us-IRHF scanning. The matrix size was 320 × 320 for Us-IR- and Us-IRHF- and 288 × 208 for conventional scanning. Modulation transfer function (MTF) focused on the 1.0 lp/cm gauge for each scanning was calculated. For clinical study we acquired respiratory-triggered 3D MRCP scans with and without Us-IRHF (U RESULTS: Phantom study showed that compared to the conventional- and Us-IR (without HF) images, the MTF for the Us-IRHF image revealed the highest response. For clinical study, the mean acquisition time was 161 s for U CONCLUSION: Us-IRHF improved the image quality of high spatial resolution MRCP without extending the scanning time.
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