Academic radiology
-
Comparative Study
Computed radiography and film digitizer inputs to an intensive care unit teleradiology system: an image quality comparison.
We compared computed radiography (CR) with a film digitizer as an image input device for transmitting radiographs to intensive care unit (ICU) displays. ⋯ ICU teleradiology displays that use CR, rather than film digitizers, offer improved image quality and superior operational efficiency.
-
We assessed the effects on the perceived quality of faculty teaching of a resident evaluation form that solicits specific comments on faculty strengths and weaknesses. ⋯ The perceived quality of certain focused aspects of resident teaching can be modified by use of resident evaluations that solicit specific suggestions for improvement. With appropriate feedback, this is an effective tool for improving the teaching performance of radiology department faculty, particularly those considered to be the weakest teachers.
-
To evaluate differences in contrast uptake in normal and cancerous lymph nodes on indirect computed tomography (CT) in swine, we conducted lymphographic examinations after subcutaneous injection of a lymphotropic iodinated nanoparticle suspension. ⋯ Quantitative and qualitative differences in iodinated nanoparticle enhancement characteristics are useful in distinguishing between normal and cancerous lymph nodes on indirect CT lymphography examinations.
-
Comparative Study
Videomanometry of the pharynx in dysphagic patients with a posterior cricopharyngeal indentation.
Patients with a posterior indentation in the pharyngoesophageal segment (PES) are generally considered to have an abnormality of the cricopharyngeal muscle (CPM). In this study we determined the actual width of the PES and the pressure circumstances during swallowing within the pharynx and PES in such patients. ⋯ Our findings in patients with a posterior CP bar suggest that the major abnormality is weak constrictors with outpouching of the gullet above and below. Only in patients with more than 50% indentation was there a slight narrowing at the level of the CP bar. The CPM showed no manometric abnormalities in terms of resting pressure, relaxation, and contraction pressure. Therefore, the CPM is likely to relax and distend normally during swallowing in patients with a CP bar.