Journal of computer assisted tomography
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J Comput Assist Tomogr · Mar 2015
The active extravasation of contrast (spot sign) depicted on multidetector computed tomography angiography might predict structural vascular etiology and mortality in secondary intracranial hemorrhage.
Intracerebral hemorrhage (ICH) occurs in 10% to 15% of all strokes and is accompanied by high rates of mortality, disability, and neurological sequelae. Our aim was to assess the presence and prognostic implications of the active extravasation of contrast within the hemorrhage (spot sign) in a series of patients with secondary ICH. ⋯ Spot sign was correlated with vascular etiology and was a predictor of mortality in our series of patients.
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J Comput Assist Tomogr · Mar 2015
Comparative StudyCAIPIRINHA-VIBE and GRAPPA-VIBE for liver MRI at 1.5 T: a comparative in vivo patient study.
Three-dimensional T1-weighted (T1W) gradient recall echo volumetric interpolated breath-hold examination (VIBE) using generalized autocalibrating partially parallel acquisitions (GRAPPA) is one of the key sequences in liver magnetic resonance imaging (MRI) and is used for precontrast, dynamic postcontrast, and delayed postcontrast imaging. The purpose of this study is to compare image quality and liver lesion detection (LLD) on a shorter-duration T1W VIBE sequence using the controlled aliasing in parallel imaging results in higher acceleration (CAIPIRINHA) technique with the conventional T1W GRAPPA-VIBE sequence during a single liver MRI session on a 1.5-T Seimens scanner. ⋯ At 1.5 T, the CAIPI-VIBE may be helpful in reducing scan time and demonstrates similar image quality compared with the traditional GRAPPA-VIBE. The CAIPI-VIBE has shorter breath-hold time requirement and thus can be an acceptable alternative for the precontrast and 5-minute postcontrast GRAPPA-VIBE in patients with breath-hold difficulties.
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J Comput Assist Tomogr · Mar 2015
Computed tomographic-guided genitofemoral nerve block: a simple anterior approach.
Chronic groin pain, often as a consequence from surgery, is a challenge from both a diagnostic and treatment standpoint. Interventional therapy is often attempted. ⋯ Classically, this nerve is blocked blindly at the level of the pubic tubercle, or more recently, with ultrasound. We present a novel technique to blocking the genitofemoral nerve in males using an anterior approach with computed tomographic guidance.
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J Comput Assist Tomogr · Mar 2015
Comparative StudyQuantitative emphysema assessment of pulmonary function impairment by computed tomography in chronic obstructive pulmonary disease.
The objective of this study was to determine the capability of quantitative emphysema by computed tomography (CT) to assess pulmonary function impairment in a population of current smokers with and without airflow limitation. ⋯ Pulmonary function results, particularly DLCO and RV/TLC, were primarily affected by the % LAV of the upper lobes. Quantitative CT measurements of emphysema provides a morphological method to investigate lung function impairment in patients with chronic obstructive pulmonary disease.