OBJECTIVES To demonstrate the image quality that can be obtained for multiple contrasts using ultra-high resolution MRI (highest nominal resolution: 350 μm isotropic) at 7T using appropriate motion-correction. MATERIALS AND METHODS An MRI-based fat-excitation motion navigator (which requires no additional hardware) was incorporated into T1-weighted (MP2RAGE, 350 μm nominal isotropic resolutio...

In this Letter, we present B-scan-sectioned dynamic micro-optical coherence tomography (BD-MOCT) for high-quality sub-cellular contrast imaging. Dynamic (D-MOCT) is a functional optical (OCT) technique performed on high-resolution (micron level) OCT systems; hundreds of consecutive B-scans need to be acquired signal extraction, which requires relatively long data acquisition time. Bulk motions ...

BACKGROUND Despite its superb lateral resolution, flat-panel-detector (FPD) based tomosynthesis suffers from low contrast and inter-plane artifacts caused by incomplete cancellation of the projection components stemming from outside the focal plane. The incomplete cancellation of the projection components, mostly due to the limited scan angle in the conventional tomosynthesis scan geometry, oft...

UNLABELLED The current perception of using contrast-enhanced CT (CECT) for attenuation correction (AC) is that of caution, as it might lead to erroneously elevated (18)F-FDG uptake on the PET scan. This study evaluates in vivo whether an intravenous iodinated contrast agent produces a significant AC artifact in the level of standardized uptake value (SUV) changes in PET/CT. METHODS Fifty-four...

The aim of this study was to implement and evaluate an accelerated three-dimensional (3D) cine phase contrast MRI sequence by combining a randomly sampled 3D k-space acquisition sequence with an echo planar imaging (EPI) readout. An accelerated 3D cine phase contrast MRI sequence was implemented by combining EPI readout with randomly undersampled 3D k-space data suitable for compressed sensing ...

Endoscopic biopsy from suspicious lesion and Fine needle aspiration cytology from secondary nodal sites are done for histopathological confirmation. Chest X-ray is required to exclude lung metastasis. Contrast-enhanced computed tomography (CECT) scan or Magnetic resonance imaging (MRI) could be used to assess the loco-regional extent of the disease, however MRI is more sensitive but less specif...

Xanthogranulomatous pyelonephritis (XGP) is a rare chronic kidney infection that can cause progressive decline in function and lead to removal or death. Symptoms of right flank pain due XGP, sometimes radiating the lower abdomen were difficult assess distinguish from urinary tract diseases alone accompanied by involvement other organs like appendicitis. We report fifty-year-old woman was referr...

The purpose of this study is to evaluate a direct measure of calcium burden by using dual-energy computed tomography (DECT) during contrast-enhanced coronary imaging, potentially eliminating the need for an extra noncontrast X-ray acquisition. The ambiguity of separation of calcium from contrast material on contrast-enhanced images was solved by using virtual noncontrast images obtained by DECT...