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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Langenbeck's archives of surgery 339 (1975), S. 321-326 
    ISSN: 1435-2451
    Keywords: Bone carcinoma ; scintigraphy ; Radiopharmaceutical agents ; Boneseeting ; Primäre Knochentumoren ; Szintigraphie ; osteotrope Radiopharmaka
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Seit Einführung kurzlebiger osteotroper Radionuklide hat die Knochenszintigraphie wesentlich an Bedeutung gewonnen. Da anhand von Speichererhöhung im Szintigramm keine differential-diagnostischen Aussagen gemacht werden können, ist das Hauptanwendungsgebiet die Suche nach Knochenmetastasen. Unter überlegter Indikationsstellung kann jedoch auch bei primären Knochentumoren die Szintigraphie sowohl die Diagnostik ergänzen als auch die Therapieplanung positiv beeinflussen. Anhand von klinischen Beispielen werden die Anwendungsbereiche der Skeletszintigraphie aufgezeigt.
    Notes: Summary Bone scintigraphy has improved greatly since the introduction of bone-seeing short-lived radionuclides. The main field of interest is the search for metastases into bone. The uncharacteristic accumulation of radiopharmaceutical agents in different bone lesions makes specific diagnostic evaluations unlikely. With careful selection of cases, however, scintigraphy can also be used in primary bone tumors as a supplementary means of diagnosis as well as having a positive effect on treatment. Clinical examples are presented to demonstrate the range of application of bone scintigraphy.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1572-901X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Mono- and binuclear copper(II) complexes with atenolol (HAt) can be obtained, depending on the reaction conditions. The mononuclear violet complex cation has the general formula Cu(HAt)4 2+ with an elongated octahedral geometry. The two ligands in the equatorial plane are bound in a bidentate fashion through the hydroxyl oxygen and amino nitrogen, while the other two atenolol molecules in axial position are coordinated in a monodentate way. The binuclear green complex Cu2At2Cl2, is neutral, where atenolol acts as a bidentate (O−, NH) bridging ligand. The bridge between the two Cu atoms is realized by the deprotonated oxygen of the alcohol group.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-2323
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. To evaluate the role of endoscopic retrograde cholangiography (ERC) before laparoscopic cholecystectomy, we compared the frequency of concomitant common bile duct stones, their clinical outcome, and the frequency of bile duct injury between a group of 128 patients with routine preoperative ERC (group A) and 1010 patients with selective ERC (group B). Overall, 48 patients (4.2%) had duct stones, but the predictive signs were absent in six of them (12.5%). The stones were demonstrated by ERC and removed by sphincterotomy in all 11 patients in group A. Of 37 patients in group B, 22 were diagnosed by selective ERC and underwent endoscopic removal. Of four patients whose stones were found by operative cholangiography, one had immediate open surgery, another passed a stone spontaneously, and the other two underwent postoperative sphincterotomy, which failed in one. The stones were not recognized until pain recurred in the remaining 11 patients. Sphincterotomy was successful in nine patients but failed in the other two. Thus postoperative sphincterotomy failed in 3 of 13 patients (23%), necessitating open surgery. Forty-two patients overall (3.7%) had aberrant biliary tract anatomy, which did not lead to bile duct injury in any of the patients. Morbidity of routine ERC (3.1%) was lower than that of selective ERC (7.4%) ( p 〈 0.05). It should be noted that a certain proportion of duct stones may be missed by selective ERC, necessitating laparotomy when sphincterotomy fails. The routine use of preoperative ERC may be justified at institutions where the expertise is available, at least until laparoscopic lithotomy becomes easy.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 67 (1989), S. 304-307 
    ISSN: 1432-1440
    Keywords: Hyperthyroidism ; Follicular thyroid carcinoma ; Radioiodine scan
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A well differentiated carcinoma of the thyroid is usually less productive with respect to thyroid hormones than normal thyroid tissue. Very rarely, it happens though that a metastatic follicular carcinoma of the thyroid produces hyperthyroidism as the following example illustrates. In our patient with follicular thyroid carcinoma the radioiodine scan demonstrated an increased uptake of123I in the right thyroid lobe but also in a lung metastasis, even before thyroidectomy. In contrast, the iodine uptake of the left — normal — thyroid lobe was suppressed. Following thyroidectomy the levels of the thyroid hormones were normal and only dropped into the hypothyroid range after the beginning of the therapy with radioiodine. Hence we conclude that the metastases of a thyroid carcinoma can attain the hormone secretion of a normal thyroid gland and take up more radioiodine than normal thyroid tissue.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Pediatric radiology 6 (1978), S. 233-234 
    ISSN: 1432-1998
    Keywords: Wilms' tumour ; Bone metastasis ; Bone scanning ; Cold lesions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Isolated mandibular metastasis in Wilms' tumour resulted in cold lesion on a bone scan.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Pediatric radiology 8 (1979), S. 254-256 
    ISSN: 1432-1998
    Keywords: Chronic myelogenous leukemia ; Bone lesions ; Blastic crisis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Report of a 13-year-old boy who developed osteolytic lesions in the chronic phase of myelogenous leukemia. Five months later a blastic crisis followed.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 35 (1957), S. 110-119 
    ISSN: 1432-1440
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Zusammenfassung 1. In einem klinischen Krankengut von 3750 Diabetikern fanden wir in etwa 2,5% eine Retinopathia proliferans (R.p.), bei weiblichen Patienten häufiger als bei männlichen. 2. Die R.p. manifestiert sich in der Regel frühestens um das 18.–20. Lebensjahr. Sie wird um so häufiger getroffen und verläuft um so maligner, je früher der Diabetes und dann eine einfache Retinopathie manifest wurde. 3. Die R.p. wird gewöhnlich erst nach 10jähriger Diabetesdauer gefunden. 4. Zwischen Iridopathia diabetica und R.p. bestehen enge Beziehungen. 5. Die R.p. ist mit einer Nephropathie vergesellschaftet, deren Verlauf die Lebensdauer des Kranken bestimmt. Daher werden die Endstadien der R.p. meist nicht erlebt oder nur kurze Zeit überlebt.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Psychiatry Research 29 (1989), S. 331-333 
    ISSN: 0165-1781
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1433-0407
    Keywords: Schlüsselwörter Hallervorden-Spatz-Krankheit ; Parkinsonsyndrom ; MRT ; 123J-β-CIT ; 123J-IBZM ; Keywords Hallervorden-Spatz Disease ; Parkinson's syndrome ; MRI ; 123I-β-CIT ; 123I-IBZM
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Abstract Hallervorden-Spatz disease (HSD), a rare extrapyramidal motor illness, is usually only confirmed after death. In vivo diagnosis has relied hitherto on the combination of typical magnetic resonance imaging (MRI) findings (the “eye of the tiger” sign) and heterogeneous clinical symptoms of movement disorder which have been regarded as almost pathognomonic. We report on the diagnostic contribution of 123J-β-CIT single photon emission computed tomography (SPECT) and 123J-IBZM SPECT in akinetic-rigid Parkinson's syndrome occurring in a case of HSD. In contrast to Parkinson's disease and multisystem atrophies, the results of both tests were normal. This constellation of findings shows that the degeneration lies primarily outside the nigrostriatal system, supporting arguments for the nosologic distinction of HSD from other extrapyramidal illnesses.
    Notes: Zusammenfassung Die Diagnose der Hallervorden-Spatz-Krankheit (HSD), einer seltenen extrapyramidal-motorischen Erkrankung, konnte gewöhnlich erst postmortal gesichert werden. Bislang galt der typische MRT-Befund mit dem “Tigerauge-Zeichen” in Kombination mit der heterogen klinischen Symptomatik von Bewegungsstörungen als nahezu pathognomonisch und diente zur Diagnosestellung zu Lebzeiten. In der vorliegenden Kasuistik soll der diagnostische Beitrag von 123J-β-CIT und 123J-IBZM-SPECT bei einem akinetisch-rigiden Parkinsonsyndrom im Rahmen einer HSD dargestellt werden. Für beide Untersuchungen wurden im Gegensatz zum M. Parkinson und Multisystematrophien Normalbefunde gefunden. Diese Befundkonstellation zeigt einerseits, dass die Degeneration primär außerhalb des nigrostriatalen Systems liegt, und andererseits unterstützt sie die Diskussion der nosologischen Abgrenzung der HSD von anderen extrapyramidalen Erkrankungen.
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 1432-2102
    Keywords: Schlüsselwörter Parkinson-Syndrom ; Dopamintransporter ; SPECT ; Bildüberlagerung ; Keywords Parkinson's disease ; Dopamine transporters ; Single-photon emission computed tomography ; Image coregistration
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Abstract Parkinson's disease (PD) is characterized by a degeneration of nigrostriatal dopaminergic neurons, which can be imaged with 123I-labeled 2b-carbomethoxy-3β-(4-iodophenyl) tropane ([123I]β-CIT) and single-photon emission computed tomography (SPECT). However, the quality of the region of interest (ROI) technique used for quantitative analysis of SPECT data is compromised by limited anatomical information in the images. We investigated whether the diagnosis of PD can be improved by combining the use of SPECT images with morphological image data from magnetic resonance imaging (MRI)/computed tomography (CT). We examined 27 patients (8 men, 19 women; aged 55±13 years) with PD (Hoehn and Yahr stage 2.1±0.8) by high-resolution [123I]β-CIT SPECT (185–200 MBq, Ceraspect camera). SPECT images were analyzed both by a unimodal technique (ROIs defined directly within the SPECT studies) and a multimodal technique (ROIs defined within individual MRI/CT studies and transferred to the corresponding interactively coregistered SPECT studies). [123I]β-CIT binding ratios (cerebellum as reference), which were obtained for heads of caudate nuclei (CA), putamina (PU), and global striatal structures were compared with clinical parameters. Differences between contra- and ipsilateral (related to symptom dominance) striatal [123I]β-CIT binding ratios proved to be larger in the multimodal ROI technique than in the unimodal approach (e.g., for PU: 1.2*** vs. 0.7**). Binding ratios obtained by the unimodal ROI technique were significantly correlated with those of the multimodal technique (e.g., for CA: y=0.97x+2.8; r=0.70; P〈0.001). Concerning the correlations between SPECT data and clinical parameters, the significance levels in the multimodal ROI technique exceeded those of the unimodal technique, for example, for the correlation between CA and the UPDRScom subscore (r =−0.49* vs. −0.32). These results show that the impact of [123I]β-CIT SPECT for diagnosing PD is affected by the method used to analyze the SPECT images. The described multimodal approach, which is based on coregistration of SPECT and morphological imaging data, leads to improved determination of the degree of this dopaminergic disorder.
    Notes: Zusammenfassung Die dem idiopathischen Parkinson-Syndrom (IPS) zugrunde liegende Degeneration nigrostriataler dopaminerger Neurone kann mit [123I]β-CIT und der Single-Photonen-Emissions-Computer-Tomographie (SPECT) erfasst werden. Dabei ist die Qualität der bei der Auswertung der SPECT-Studien angewandten Regions-of-Interest- (ROI-)Technik durch die begrenzte anatomische Information in den Szintigrammen limitiert. Die vorliegende Studie wurde durchgeführt, um zu testen, ob die Diagnostik des IPS durch eine Koregistrierung der funktionell orientierten SPECT-Bilddaten mit morphologisch orientierten Bilddaten der MRT/CT verbessert werden kann. Dazu wurden im Rahmen einer neurokognitiven Studie 27 Patienten (8 m, 19 w; Alter: 55±13 Jahre) mit IPS (Hoehn-und-Yahr-Stadium 2,1±0,8 [MW±SD]) mittels hochauflösender [123I]β-CIT-SPECT (185–200 MBq, Ceraspect-Kamera) untersucht. Die SPECT-Analyse erfolgte durch 2 verschiedene ROI-Techniken: 1. unimodale Technik – ROIs direkt in den SPECT-Studien definiert; 2. multimodale Technik – ROIs in individuellen MRT/CT-Studien definiert und nach interaktiver Koregistrierung von SPECT- und MRT/CT-Studien auf die SPECT-Studien transformiert. Es wurden [123I]β-CIT-Anreicherungsquotienten (Referenz=Zerebellum) für die Caudatusköpfe (CA), Putamina (PU) und für die gesamten Corpora striata gewonnen und mit klinischen Parametern verglichen. Im Vergleich zur unimodalen ROI-Technik waren im Falle der multimodalen Technik die Differenzen zwischen den kontra- und ipsilateralen (in Relation zur klinisch dominierenden Halbseite) [123I]β-CIT-Anreicherungsquotienten signifikant größer (z. B. für PU: 1,2*** vs. 0,7**). Die Ergebnisse der unimodalen ROI-Technik korrelierten linear und hoch signifikant mit den Ergebnissen der multimodalen Technik (z. B. für CA: y=0,97x+2,8; r=0,70; p〈0,001). Bei der Korrelation der SPECT-Daten mit den klinischen Parametern waren für die multimodale ROI-Technik höhere Signifikanzniveaus im Vergleich zur unimodalen Technik zu verzeichnen (z. B. für Korrelation zwischen CA und UPDRSkompl: r=−0,49* vs. −0,32). Aus den Ergebnissen wird geschlussfolgert, dass die Wahl der Auswertetechnik bei der [123I]β-CIT-SPECT die Qualität der Diagnostik des IPS beeinflusst. Mit der vorgestellten, auf der Koregistrierung der funktionellen mit morphologischen Bilddaten beruhenden Technik wird insbesondere die Charakterisierung des Schweregrades dieser Dopaminmangelerkrankung verbessert.
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