PURPOSE To develop a robust and rapid imaging technique for hyperpolarized (13)C MR Spectroscopic Imaging and investigate its performance. METHODS A concentric rings readout trajectory with constant angular velocity is proposed for hyperpolarized (13)C spectroscopic imaging and its properties are analyzed. Quantitative analyses of design tradeoffs are presented for several imaging scenarios. ...

High-resolution diffusion MRI can provide the ability to resolve small brain structures, enabling investigations of detailed white matter architecture. A major challenge for in vivo high-resolution diffusion MRI is the low signal-to-noise ratio. In this work, we combine two highly compatible methods, ultra-high field and three-dimensional multi-slab acquisition to improve the SNR of high-resolu...

HYPOTHESIS Early, postinjection technetium Tc 99m sestamibi scintigraphy-single-photon emission computed tomography (MIBI-SPECT) can be used as the only localizing study for focused parathyroidectomy in patients with primary hyperparathyroidism. DESIGN During a 26-month period, 82 consecutive patients with primary hyperparathyroidism underwent a standard planar scan using a double-tracer subt...

Previous studies suggest cardiac imaging in cancer patients for detection of cancer-therapy-related dysfunction (CTRCD) is discordant with international guidelines, clinical implications unknown. Cancer were recruited prior to either anthracyclines or trastuzumab administration and underwent concurrent strategy Multigated Acquisition Scan (MUGA)-based timing determined by treating oncologist, e...

UNLABELLED The objective of this study was to determine whether posttherapy (131)I SPECT/CT changed the need for additional cross-sectional imaging or modified the American Thyroid Association risk of recurrence classification. We performed planar imaging and SPECT/CT in a consecutive series of patients after (131)I therapy. METHODS Planar imaging and SPECT/CT were performed on 148 consecutiv...

OBJECTIVE Tc-methoxyisobutyl isonitrile (MIBI) has been reported to show considerable clinical utility in the study of many neoplastic diseases. The aim of our study was to investigate the possible role of Tc-MIBI in the initial follow-up of patients with differentiated thyroid cancer (DTC) for detecting residual thyroid uptake and/or loco-regional/distant metastases. METHODS Eighty-two patie...

In this letter, we present a planar half-Luneburg lens antenna based on glide-symmetric dielectric structure. The proposed provides compact alternative to beamformers such as conventional Luneburg and Rotman lenses, well pillbox antennas. Importantly, demonstrate that the peak gain of is less than 1 dB lower antenna, despite being almost half size. can steer its beam in 50 <inline-formula xmlns...

The aim of this study was to analyze the interobserver agreement visual and quantitative assessment cardiac 123I-metaiodobenzylguanidine scintigraphy. Methods: Planar images were acquired using a low-energy collimator. heart-to-mediastinum (HM) ratio adjusted for use collimator, published formula. Interpretation undertaken both visually after addition HM ratios. Image findings...