Parathyroid scintigraphy is a method of Nuclear Medicine in which a qualitative evaluation of images is carried out to evaluate the concentration and distribution of radiopharmaceuticals in the parathyroid glands. To complete, a quantitative evaluation of the images can also be carried out, calculating the uptake index of the parathyroid glands with respect to the injected dose. In this thesis, the two main methods used in the Nuclear Medicine UOC of the University of Padua Hospital were highlighted: parathyroid scintigraphy with double tracer, [99mTc]Tc-sestamibi and [99mTc]Tc-pertechnetate, with the use of traditional equipment and parathyroid scintigraphy with double tracer, [123I]I-iodine and [99mTc]Tc-sestamibi, with the use of SPECT/equipmentCT Whole Body with CZT detectors. In addition, special attention was paid to the description of CZT detectors, which allow the simultaneous acquisition of different energy peaks, avoiding the replacement of collimators during the acquisition phase as happens in traditional gamma cameras, thanks, in fact, to the SPECT/CT Whole Body equipment, which has 12 columns of CZT detectors arranged in a ring. In addition, it has been described how, the use of single-phase double tracer imaging with simultaneous acquisition, is advantageous in terms of good diagnosis and timing, both for the Patient and for the Technical staff, thanks to the use of [123I]I-iodine.
La scintigrafia paratiroidea è una metodica di Medicina Nucleare in cui viene effettuata una valutazione qualitativa delle immagini per valutare la concentrazione e la distribuzione dei radiofarmaci nelle ghiandole paratiroidi. A completamento si può, inoltre, effettuare una valutazione quantitativa delle immagini, calcolando l’indice di captazione delle ghiandole paratiroidee rispetto alla dose iniettata. In questa tesi sono state messe in evidenza le due metodiche principali utilizzate nella U.O.C. di Medicina Nucleare dell’Azienda Ospedaliera Università di Padova: scintigrafia paratiroidea con doppio tracciante, [99mTc]Tc-sestamibi e [99mTc]Tc- pertecnetato, con l’utilizzo dell’apparecchiatura tradizionale e scintigrafia paratiroidea con doppio tracciante, [123I]I-iodio e [99mTc]Tc-sestamibi, con l’utilizzo dell’apparecchiatura SPECT/CT Whole Body con detettori CZT. Inoltre, si è posta particolare attenzione alla descrizione dei detettori CZT, che permettono l’acquisizione simultanea di diversi picchi energetici, evitando la sostituzione dei collimatori in fase di acquisizione come avviene nelle gamma camera tradizionali, grazie, appunto, all’apparecchiatura SPECT/CT Whole Body, che possiede 12 colonne di detettori CZT disposti ad anello. In aggiunta, è stato descritto come, l’utilizzo dell’imaging a doppio tracciante monofase ad acquisizione simultanea, sia vantaggioso in termini di buona diagnosi e tempistiche, sia per il Paziente che per il personale Tecnico, grazie all’utilizzo dello [123I]I-iodio.
Imaging paratiroideo con gamma camera e detettori CZT: ottimizzazione del protocollo scintigrafico con [¹²³I]I-iodio e [⁹⁹ᵐTc]Tc-sestamibi
CELADIN, ELEONORA
2024/2025
Abstract
Parathyroid scintigraphy is a method of Nuclear Medicine in which a qualitative evaluation of images is carried out to evaluate the concentration and distribution of radiopharmaceuticals in the parathyroid glands. To complete, a quantitative evaluation of the images can also be carried out, calculating the uptake index of the parathyroid glands with respect to the injected dose. In this thesis, the two main methods used in the Nuclear Medicine UOC of the University of Padua Hospital were highlighted: parathyroid scintigraphy with double tracer, [99mTc]Tc-sestamibi and [99mTc]Tc-pertechnetate, with the use of traditional equipment and parathyroid scintigraphy with double tracer, [123I]I-iodine and [99mTc]Tc-sestamibi, with the use of SPECT/equipmentCT Whole Body with CZT detectors. In addition, special attention was paid to the description of CZT detectors, which allow the simultaneous acquisition of different energy peaks, avoiding the replacement of collimators during the acquisition phase as happens in traditional gamma cameras, thanks, in fact, to the SPECT/CT Whole Body equipment, which has 12 columns of CZT detectors arranged in a ring. In addition, it has been described how, the use of single-phase double tracer imaging with simultaneous acquisition, is advantageous in terms of good diagnosis and timing, both for the Patient and for the Technical staff, thanks to the use of [123I]I-iodine.| File | Dimensione | Formato | |
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https://hdl.handle.net/20.500.12608/98372