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  • 1
    Electronic Resource
    Electronic Resource
    Feminizing adrenocortical carcinoma in man (1980)
    Springer
    Surgery today 10 (1980), S. 159-163 
    Details
    ISSN: 1436-2813
    Keywords: gynecomastia ; adrenocortical tumor ; estrogen producing tumor ; impotence ; o,p′-DDD
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A 37-year-old male with adrenocortical tumor presenting marked gynecomastia and impotence as initial symptoms was experienced. Abnormal elevations in urinary 17-KS, 17-OHCS and blood estrogen levels were noted. Total surgical removal of the tumor weghing 800g was performed. Postoperatively the gynecomastia disappeared and he regained libido with no signs of recurrence one year later.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02468682
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  • 2
    Electronic Resource
    Electronic Resource
    A comparative study of attenuation correction algorithms in single photon emission computed tomography (SPECT) (1987)
    Springer
    European journal of nuclear medicine 13 (1987), S. 55-62 
    Details
    ISSN: 1619-7089
    Keywords: Comparative study ; Attenuation correction algorithm ; Single photon emission computed tomography (SPECT) ; Hybrid method
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A computer based simulation method was developed to assess the relative effectiveness and availability of various attenuation compensation algorithms in single photon emission computed tomography (SPECT). The effect of the nonuniformity of attenuation coefficient distribution in the body, the errors in determining a body contour and the statistical noise on reconstruction accuracy and the computation time in using the algorithms were studied. The algorithms were classified into three groups: precorrection, post correction and iterative correction methods. Furthermore, a hybrid method was devised by combining several methods. This study will be useful for understanding the characteristics, limitations and strengths of the algorithms and searching for a practical correction method for photon attenuation in SPECT.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00256016
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  • 3
    Electronic Resource
    Electronic Resource
    Evaluation of common bile duct stenosis in chronic pancreatitis using cholescintigraphy (1988)
    Springer
    European journal of nuclear medicine 14 (1988), S. 137-140 
    Details
    ISSN: 1619-7089
    Keywords: Cholescintigraphy ; Chronic pancreatitis ; Common bile duct stenosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract To evaluate a stenotic change of the common bile duct (CBD) in chronic pancreatitis (CP), cholescintigraphy with 99mTc-N-pyridoxyl-5-methyltryptophan (PMT) was performed in 28 patients with CP and 15 normal subjects. The patients were divided into 3 groups on the basis of their endoscopic retrograde cholangiopancreatography (ERCP) findings: minimal CP (MIP; n=14), moderate CP (MOP; n=10), and advanced CP (ADP; n=4). After intravenous injection of 5 mCi 99mTc-PMT, digital images were obtained and time activity curves of the ROIs (liver, hepatic duct, gallbladder, and duodenum) were generated. No radioactivity was seen in the duodenum within 1 hour in 12 of 28 (43%) with CP and 2 of 15 (13%) normals. Reflux to the hepatic duct after cerulein injection was found in 6 of 20 (30%) examined patients with CP and more frequently in ADP, whereas there was no reflux in MIP and normals. When the finding of reflux in cholescintigraphy was interpreted as positive for CBD stenosis, the sensitivity, specificity, and accuracy were 100%, 88%, and 90%, respectively. We conlcude that reflux is a reliable scintigraphic finding in detecting CBD stenosis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00293537
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  • 4
    Electronic Resource
    Electronic Resource
    The role of gallium 67 imaging in non-Hodgkin's lymphoma of the gastrointestinal tract (1990)
    Springer
    European journal of nuclear medicine 17 (1990), S. 142-147 
    Details
    ISSN: 1619-7089
    Keywords: Gallium 67 imaging ; Computerized tomography ; Barium study ; Non-Hodgkin's lymphoma ; Gastrointestinal tract
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract To evaluate the clinical usefulness of gallium 67 imaging in the detection of gastrointestinal (GI) non-Hodgkin's lymphoma (NHL) and in the assessment of the therapeutic effects, images were reviewed in 24 cases (25 lesions: stomach, 20; ileum, 2; and terminal ileum and/or cecum, 3) and were compared using barium studies and, in 16 cases, computerized tomography (CT). In all, 23 (92.0%) of the 25 lesions were detected by67Ga citrate imaging, the barium studies detected all 25, and CT detected 15 of 16 lesions (93.8%). The two lesions not identified by imaging and the one not found by CT were the smallest of all. In 2 (8.7%) of the 23 lesions positively identified by67Ga-citrate imaging, both CT and imaging revealed the extent of the tumor more accurately than did the barium studies. In all but one of the patients, a close correlation existed between the imaging results and the therapeutic effects. These data suggest that67Ga imaging is useful in conjunction with CT and barium studies for the detection of GI NHL and for the assessment of both the spatial extent of disease and the therapeutic effects, although a lack of67Ga uptake after therapy does not always indicate a good therapeutic effect.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00811442
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  • 5
    Electronic Resource
    Electronic Resource
    Single photon emission computed tomography (SPELT) using N-isopropyl-p-(123I)iodoamphetamine (IMP) in the evaluation of patients with epileptic seizures (1990)
    Springer
    European journal of nuclear medicine 16 (1990), S. 285-292 
    Details
    ISSN: 1619-7089
    Keywords: Brain imaging ; Epilepsy ; 123I-IMP ; SPECT
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract To evaluate the clinical usefulness of IMP SPECT in the diagnosis of epilepsy, 6 normals and 52 patients in the interictal phase were studied. Thirty min after an intravenous injection of 111 MBq IMP, SPECT was performed using a rotating gamma camera. Of 21 patients with simple partial seizures, a localized decrease of uptake was shown in 16, and an increase in 3. Topologically, these findings corresponded well to the ictal symptoms. Nine of 13 patients with localized epileptic EEG had a good correspondence between the findings on EEG and IMP SPELT. In 20 of 23 with complex partial seizures, the coronal images showed laterality of uptake in the temporal lobes, whereas the CT was normal in 14. However, these findings on IMP SPECT agreed with the EEG in the temporal leads in only 5 cases. Of 8 patients with primary generalized seizures, a diffuse cerebral decrease was shown in 3 of 4 patients with convulsive seizures (grand mal), and a normal uptake in 3 of 4 patients with non-convulsive seizures (petit mal). However, 2 patients showed a localized decrease, therefore, we determined that they suffered from partial seizures evolving to secondarily generalization. From these data, we concluded that IMP SPELT could be a useful method in the diagnosis of epilepsy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00842781
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  • 6
    Electronic Resource
    Electronic Resource
    Simulation and experimental study of respiratory motion effect on image quality of single photon emission computed tomography (SPECT) (1987)
    Springer
    European journal of nuclear medicine 13 (1987), S. 244-249 
    Details
    ISSN: 1619-7089
    Keywords: Respiratory motion ; Single photon emission computed tomography (SPECT) ; Computer simulation ; Moving phantom
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The effect of respiratory motion on the image quality of single photon emission computed tomography (SPECT) was investigated by computer simulation and experimentation. In the computer simulation, the phantom was assumed to be cylindrical with a uniform background and a spherical cold or hot spot. To simulate respiratory motion, a cyclic linear motion parallel to the axis of rotation of a gamma camere was assumed. The contrast in the transaxial images was calculated for various respiratory amplitudes and its dependence on lesion size and object contrast was investigated. In the experiments, a moving phantom was used to simulate respiratory motion. The simulation and the experimenal results were in good agreement within the range of statistical error. The effect on the lesion detectability was investigated using receiver operating characteristics (ROC) analysis, and a method for correcting respiratory motion was devised.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00252601
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  • 7
    Electronic Resource
    Electronic Resource
    Distribution of organophosphoric acid triesters between water and sediment at a sea-based solid waste disposal site (1999)
    Springer
    Journal of material cycles and waste management 1 (1999), S. 53-61 
    Details
    ISSN: 1611-8227
    Keywords: Key words Organophosphoric acid triesters (OPEs) ; Landfill ; Suspended solids ; Leachate ; Behavior of chemicals
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Organophosphoric acid triester (OPE) concentration levels in water and bottom sediment at the Osaka North Port Sea-Based Solid Waste Disposal Site were investigated, and the behavior of OPEs in the water environment of the waste disposal site was examined. The more highly water-soluble OPEs were frequently detected in raw water. Of the OPEs detected, TCEP and TCPP showed very high concentrations (1.0–90 μg/l), followed by TEP (0.3–10 μg/l) 〉 TBXP (0.8–6.3 μg/l) 〉 TDCPP (0.6–6.2 μg/l) 〉 TBP (0.2–1.5 μg/l) 〉 TPP (〈0.1 μg/l). Most OPEs detected in water were eluted from the disposal waste to the water phase immediately and behaved as dissolved forms with no distribution in suspended solids (SS). On the other hand, the less water-soluble OPEs, such as TCP or TEHP, were detected in bottom sediment but hardly at all in water samples. All OPEs were detected at the waste disposal site, within which their concentration levels were uniform. It appeared that the less water-soluble OPEs were present as SS-associated forms and behaved in line with the floating surface sludge at the bottom.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s10163-999-0005-6
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