Biomedical subjects
Publications and source records attributed to F Thomsen.
The detection of renal abnormalities during bone scintigraphy using 99Tcm-phosphorous complexes is well documented. Three patients with renal carcinoma visible on early but less well on late images during bone scintigraphy are presented. Early dynamic imaging provides improved lesion detectability and information about renal function.
Nineteen patients with urologic disorders referred to bone scintigraphy were evaluated with a dual radioisotope technique using simultaneous injection of 99Tcm-MDP and 131I-Hippuran. The MDP and Hippuran renograms showed in general the same pattern and there was no difference between the kidney function determined with the two radionuclides. The peak of the MDP curves occurred later and was less distinct than that of the Hippuran curves. The residual activity of the kidneys 20 min after the injection was higher on the MDP renograms compared with the Hippuran renograms. The early sequential MDP images were superior in quality to the Hippuran images and to the renal images obtained at bone scintigraphy. The early MDP images correlated well with the findings at urography performed in 12 patients, as all cases of radiologically diagnosed hydronephrosis, reduction of renal parenchyma and renal mass lesions became demonstrated. Renal calculi were only diagnosed at urography. In conclusion, MDP cannot replace Hippuran as a renal radionuclide agent, mainly due to its lower extraction ratio and the high bone uptake. However, an increased use of early dynamic renal imaging is recommended in urologic patients referred to bone scintigraphy as valuable information about renal function may be obtained by this procedure.
The dynamic nature of today's health care environment requires innovation and creativity in organizational structure and management style. Some of the most essential concerns of nursing staff today are related to quality of working life, and perhaps a central focus for most nurse employees is a scheduling system which offers the flexibility necessary for them to respond to an active personal and professional life. This paper describes the utilization of change theory in operationalizing new scheduling practices with four unique nursing groups. The self designed master rotation and a self scheduling process are two examples of innovative change implemented by four nurse managers. Each participative management approach is presented in relation to the phases of Lewin's change process. Strategies include a needs assessment survey, facilitating staff participation in the design, implementation and evaluation of a new scheduling practice and encouraging group responsibility for the process and outcome of the planned change.