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The Value of FDG PET/CT in the Diagnosis of Cardiovascular Inflammation.
Zogala, David ; Kubinyi, Jozef (advisor) ; Karetová, Debora (referee) ; Řehák, Zdeněk (referee)
1 Abstract Aim: To evaluate the diagnostic performance of FDG PET/CT in the detection of stent graft infection (SGI) with the use of visual and semiquantitative interpretation, to compare it with standalone CT analysis, to verify the transferability of the experience with FDG PET/CT in surgical prosthesis infection and to define the role of the method in the diagnostic algorithm of SGI. Subjects and Methods: In this retrospective study, two nuclear medicine physicians have independently analyzed 21 FDG PET/CT examinations performed in 20 subjects (16 men, 66 ± 8 years) between 2010 and 2019 for clinical suspicion of SGI. Six subjects examined from other reasons without signs of infection constituted a control group. The images were evaluated for the uptake pattern and intensity, and by the maximum standard uptake value (SUVmax), the target-to-background ratio with blood pool (TBRBP) and liver uptake (TBRhep) as a reference. The SGI was defined as the presence of focal hyperactivity with an intensity exceeding hepatic uptake. CT images were independently assessed for signs of SGI. Clinical review of all further patients' data served as the standard of reference. Results: Twelve cases were established as SGI by the clinical review. PET/CT correctly diagnosed SGI in eight and yielded a sensitivity of 92 % and...
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The Value of FDG PET/CT in the Diagnosis of Cardiovascular Inflammation.
Zogala, David ; Kubinyi, Jozef (advisor) ; Karetová, Debora (referee) ; Řehák, Zdeněk (referee)
1 Abstract Aim: To evaluate the diagnostic performance of FDG PET/CT in the detection of stent graft infection (SGI) with the use of visual and semiquantitative interpretation, to compare it with standalone CT analysis, to verify the transferability of the experience with FDG PET/CT in surgical prosthesis infection and to define the role of the method in the diagnostic algorithm of SGI. Subjects and Methods: In this retrospective study, two nuclear medicine physicians have independently analyzed 21 FDG PET/CT examinations performed in 20 subjects (16 men, 66 ± 8 years) between 2010 and 2019 for clinical suspicion of SGI. Six subjects examined from other reasons without signs of infection constituted a control group. The images were evaluated for the uptake pattern and intensity, and by the maximum standard uptake value (SUVmax), the target-to-background ratio with blood pool (TBRBP) and liver uptake (TBRhep) as a reference. The SGI was defined as the presence of focal hyperactivity with an intensity exceeding hepatic uptake. CT images were independently assessed for signs of SGI. Clinical review of all further patients' data served as the standard of reference. Results: Twelve cases were established as SGI by the clinical review. PET/CT correctly diagnosed SGI in eight and yielded a sensitivity of 92 % and...
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Social behaviour and ecology of bats of the genus Pipisttrellus
Jahelková, Helena ; Horáček, Ivan (advisor) ; Řehák, Zdeněk (referee) ; Červený, Jaroslav (referee)
43 Summary of results of presented research Since discrimination of two cryptic species inside Pipistrellus pipistrellus s.l based on echolocation calls (Jones & van Parijs 1993), social calls (Barlow & Jones 1997), and molecular data (Barratt et al. 1997), the genus Pipistrellus have been studied intensively. The mainstream of my research were reproduction strategies and vocalization behaviour of Nathusius's pipistrelle (Pipistrellus nathusii). It is a small European insectivorous species, which is known for his migratory behaviour. The dominant mating system is resource-defence polygyny. Males vocalize during flight (songflight) and from entrances of their day roosts (sedentary display). Advertising calls occur during whole active season, but they considerable increase during mating season. Males show strong fidelity to their mating roosts whereas females are fixed to maternity colonies (Schmidt 1984, Rachwald 1992, Gerell-Lundberg & Gerell 1994, Furmankiewitz 2003, Petersons 2004). This species exhibits variability in mating behaviour in different countries, probably due to long- distance migrations. In Czech Republic, the species was considered to be rare and only sporadic indications of reproduction were found (Hanák & Gaisler 1976, Šefrová & Buřič 1998). Main research area of my study was in South...
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