No abstract available.
Lung* ; Perfusion*

No abstract available.
Acquired Hyperostosis Syndrome* ; Radionuclide Imaging*

No abstract available.
Adenocarcinoma* ; Rectum*

No abstract available.
Diabetes Mellitus* ; Humans ; Lower Extremity* ; Radionuclide Imaging* ; Technetium Tc 99m Medronate* ; Vascular Calcification*

PURPOSE: Complete fibrovascular ingrowth within the hydroxyapatite ocular implant is necessary for peg drilling which is performed to prevent infection and to provide motility to the ocular prosthesis. We compared planar bone scintigraphy and SPECT for the evaluation of the vascularization within hydroxyapatite ocular implants. MATERIALS AND METHODS: Seventeen patients (M:F=12:5, mean age: 50.4+/-17.5 years) who had received a coralline hydroxyapatite ocular implant after enucleation surgery were enrolled. Patients underwent Tc-99m MDP planar bone and SPECT imaging by dual head gamma camera after their implant surgery (interval: 197+/-81 days). Uptake on planar and SPECT images was graded visually as less than (grade 1), equal to (grade 2), and greater than (grade 3) nasal bridge activity. Quantitative ratio of implanted to non-implanted intraorbital activity was also measured. Vascularization within hydroxyapatite implants was confirmed by slit lamp examination and ocular movement. RESULTS: All but three patients were considered to be vascularized within hydroxyapatite implants. In visual analysis of planar image and SPECT, grade 1 was noted in 9/18 (50%) and 6/18 (33%), respectively. Grade 2 pattern was 7/18 (39%) and 4/18 (22%), and grade 3 pattern was 2/18 (11%) and 8/18 (44%) respectively. When grade 2 or 3 was considered to be positive for vascularization, the sensitivity of planar and SPECT imaging were 60% (9/15) and 80% (12/15), respectively. In 3 patients with incomplete vascularization, both planar and SPECT showed grade 1 uptake. The orbital activity ratios on planar imaging were not significantly different between complete and incomplete vascularization (1.96+/-0.87 vs 1.17+/-0.08, p>0.05), however, it was significantly higher on SPECT in patients with complete vascularization (8.44+/-5.45 vs 2.20+/-0.87, p<0.05). CONCLUSION: In the assessment of fibrovascular ingrowth within ocular implants by Tc-99m MDP bone scintigraphy, SPECT image appears to be more effective than planar scintigraphy.
Durapatite* ; Eye, Artificial ; Gamma Cameras ; Head ; Humans ; Orbit ; Radionuclide Imaging* ; Technetium Tc 99m Medronate ; Tomography, Emission-Computed, Single-Photon*

No abstract available.
Intestinal Obstruction*

No abstract available.
Barium* ; Colon* ; Humans ; Neoplasm Metastasis*

No abstract available.
Pericardial Effusion* ; Radionuclide Imaging* ; Technetium Tc 99m Medronate*

Recently, NAG activity has gained increasing importance as and aid in the diagnosis of renoparenchymal diseases. Elevation of urine NAG activity has been found to be an indicator of renoparenchymnal diseases. To evaluate the diagnostic value of the NAG activity test in the renal disease, we carried out clinical study on 31 cases of renal disease patients who had been admitted to the Department of Pediatrics, Chung-Ang University Hospital between March 1992 and February 1993. We analyese by two data: (1) Stastical Package for the Social Science. (2) Students'T test. The results were as follows 1) The urine NAG activity significantly increased (p<0.05) to 69.9+/-5165.69U/hr/mg Creatinine (U/hr/mg Cr) in the renal disease group compared to 3.6+/-1.91U/hr/mg Cr in the control group. 2) The serum NAG activity was 11.69+/-5.18U/L in the renal disease group and 10.58+/-4.04U/L in the control group. There was no significant difference in the serum NAG sctivity between two groups. 3) In the renal disease group, the serum NAG activity was 10.78+/-3.32U/L in male 12.53+/-6.47U/L in female. There was no significant difference between both sexes. In the renal disease, the urine NAG activity was 33.62+/-30.67U/hr/mg Cr in male and 114.05+/-241.62U/hr/mg Cr female. There was no significant difference between both sexes (p<0.05). 4) In the renal disease group, the urine NAG activity increased 314.73+/-420.39U/hr/mg Cr in the 2 years old group but there was no significant difference of urine NAG activity compared to above 2 years old group . 5) The urine NAG activities were 93.1+/-0193.04U/hr/mg Cr in the poteinuria subgroup and 13.3+/-47.62U/hr/mg Cr in the nonproteinuria subgroup and 3.66+/-1.91U/hr/mg Cr in the control group. There was no significant difference between the proteinuria subgroup and the nonproteinuria subgroup. but there was significant difference between nonproteinuria subgroup and control grouop(p<0.005).
Child, Preschool ; Creatinine ; Diagnosis ; Female ; Humans ; Male ; Pediatrics ; Proteinuria ; Social Sciences

PURPOSE: We investigated whether myocardial SPECT had additional usefulness to clinical, functional or surgical indices for the preoperative evaluation of cardiac risks in noncardiac surgery. MATERIALS AND METHODS: 118 patients (M: F=66:52, 62.7+/-10.5 years) were studied retrospectively. Eighteen underwent vascular surgeries and 100 nonvascular surgeries. Rest T1-201/stress Tc-99m-MIBI SPECT was performed before operation and cardiac events (hard event: cardiac death and myocardial infarction; soft event: ischemic ECG change, congestive heart failure and unstable angina) were surveyed through perioperative periods (14.6+/-5.6 days). Clinical risk indices, functional capacity, surgery procedures and SPECT findings were tested for their predictive values of perioperative cardiac events. RESULTS: Peri-operative cardiac events occurred in 25 patients (3 hard events and 22 soft events). Clinical risk indices, surgical procedure risks and SPECT findings but functional capacity were predictive of cardiac events. Reversible perfusion decrease was a better predictor than persistent decrease. Multivariate analysis sorted` out surgical procedure risk (p=0.0018) and SPECT findings (p=0.0001) as significant risk factors. SPECT could re-stratify perioperative cardiac risks in patients ranked with surgical procedures. CONCLUSION:: We conclude that myocardial SPECT provides additional predictive value to surgical type risks as well as clinical indexes or functional capacity for the prediction of preoperative cardiac events in noncardiac surgery.
Death ; Electrocardiography ; Heart Failure ; Humans ; Multivariate Analysis ; Myocardial Infarction ; Myocardial Ischemia ; Perfusion ; Perioperative Period ; Retrospective Studies ; Risk Factors ; Tomography, Emission-Computed, Single-Photon*