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 · Jan 2015
Comparative StudyClinical impact of 3-dimensional balanced turbo-field-echo magnetic resonance cholangiopancreatography at 3 T: prospective intraindividual comparison with 3-dimensional turbo-spin-echo magnetic resonance cholangiopancreatography.
The objective of this study was to evaluate the clinical utility of 3-dimensional (3D) balanced turbo-field-echo (BTFE) magnetic resonance cholangiopancreatography (MRCP) with gate and track acquisition at 3 T. ⋯ Three-dimensional BTFE MRCP yields significantly better image quality and visibility of large biliary structures than VISTA MRCP at a significantly shorter acquisition time. Volume isotropic T2-weighted acquisition MRCP provides detailed information on the main pancreatic duct that tends to be obscure on the 3D BTFE sequence.
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J Comput Assist Tomogr · Jan 2015
Relationship between the position of the mental foramen and the anterior loop of the inferior alveolar nerve as determined by cone beam computed tomography combined with mimics.
The position of the mental foramen and the anterior loop length of the inferior alveolar nerve serve as important anatomical landmarks for surgical procedures in the anterior mandibular region. The purpose of this study was to determine the relationship between the anterior loop of the inferior alveolar nerve and the mental foramen by combining cone beam computed tomography and Mimics, a software used to construct 3-dimensional (3D) interactive models of anatomical structures. ⋯ A relationship was observed between the location of the mental foramen and the presence of the anterior loop of the inferior alveolar nerve. We highlight the effectiveness of cone beam computed tomography and 3D reconstruction in the identification of important anatomical structures relevant for preoperative assessment for surgical procedures in the anterior region of the mandible.