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UNLABELLED Magnetic resonance elastography (MRE), an advanced magnetic resonance-based imaging technique, and acoustic radiation force impulse (ARFI), an ultrasound-based imaging technique, are accurate for diagnosing nonalcoholic fatty liver disease (NAFLD) fibrosis. However, no head-to-head comparisons between MRE and ARFI for diagnosing NAFLD fibrosis(More)
BACKGROUND & AIMS Liver biopsy analysis is the standard method used to diagnose nonalcoholic fatty liver disease (NAFLD). Advanced magnetic resonance imaging is a noninvasive procedure that can accurately diagnose and quantify steatosis, but is expensive. Conventional ultrasound is more accessible but identifies steatosis with low levels of sensitivity,(More)
Conventional radiography in the lateral projection was used to evaluate 25 osteolytic lesions involving vertebral bodies of the thoracolumbar spine. Destruction was calculated as percentages of the maximum transverse diameter and volume of the vertebral body as measured by computed tomography (CT) and the effect of size of lesion on detection was evaluated.(More)
A pulse-echo technique for measuring the velocity of ultrasound in the cortex of the femur in vivo is presented. The average result for 27 asymptomatic volunteers is 3250 +/- 190 m/s. The results show no significant differences between proximal and distal femoral sites, right and left femora, males and females. There is also no significant difference(More)
The effects of transient ischemia and reperfusion on regional myocardial function, salvage and swelling have been systematically analyzed in experimental canine preparations. The results of these interventions on myocardial in vitro measurements of magnetic relaxation times (T1 = magnetization recovery, T2 = spin echo) are of significant importance with(More)
A method was developed to map tissue properties of the entire breast including sound speed and attenuation using fully 3D nonlinear inverse-scattering tomography. Clinical measurements suggest that in breast tissue benign and cancerous lesions may be identified in part by these inherent acoustic parameters. Sound speed accuracy and linearity are very high(More)
Disuse osteoporosis occurs in the lower extremities of patients with spinal cord injury (SCI). However, spinal osteoporosis is not usually observed in these patients. We investigated lumbar spine bone mineral density (BMD) in SCI patients using single energy quantitative computed tomography (QCT) and dual-energy X-ray absorptiometry (DXA). Our study(More)
An evaluation of musculoskeletal disorders in 202 patients using three-dimensional CT displays has revealed the usefulness of the technique, especially in patients with fractures of skeletal areas with complex anatomy, articular disorders of the hip, and spinal stenosis. In some cases, plastic models of diseased areas have been created from the CT data and(More)