Title Evaluacija primjene peroralnih radioloških kontrastnih sredstava u PET/CT dijagnostici
Title (english) Evaluation of Application of Oral Radiographic Contrast Agents in PET / CT Diagnostics
Author Antonia Pauk
Mentor Darijo Radović (mentor)
Committee member Ante Punda (predsjednik povjerenstva)
Committee member Frane Mihanović (član povjerenstva)
Committee member Darijo Radović (član povjerenstva)
Granter University of Split (University Department of Health Studies) Split
Defense date and country 2014-09-26, Croatia
Scientific / art field, discipline and subdiscipline BIOMEDICINE AND HEALTHCARE Clinical Medical Sciences
Abstract CILJ: PET/CT je hibridna tehnika koja stvara morfološko i metaboličko oslikavanje cijelog tijela pomoću radiofarmaka 18F-FDG-a. Zbog te mogućnosti PET/CT ima najveću primjenu u kliničkoj onkologiji za dijagnostiku tumora te praćenje bolesti i radioterapije. Davanje peroralnog kontrasta sastavni je dio PET/CT protokola kako bi se ispunio lumen crijeva i time omogućila bolja vizualizacija gastrointestinalnog trakta. Cilj ovog istraživanja bio je evaluirati primjenu peroralnih kontrasta u PET/CT dijagnostici i time odgovoriti na sljedeća pitanja: poboljšavaju li ili otežavaju peroralni kontrasti analizu dobivene PET/CT slike; utječu li na nakupljanje FDG-a u GI sustavu; stvaraju li artefakte te da li je potrebno peroralne kontraste primjenjivati rutinski u svih pacijenata koji pristupaju PET/CT pretrazi ili samo kod onih koji su na pretragu upućeni zbog bolesti GI sustava.
MATERIJALI I METODE: 90 ispitanika podijeljeno je u 3 skupine: 30 pacijenata bez peroralnog kontrasta; 30 pacijenata koji su koristili vodu kao peroralni kontrast; 30 pacijenata koji su koristili otopinu gastrografina (20 mL gastrografina u litri vode). Peroralni kontrast su pili kroz sat vremena, prije početka same pretrage. Slike su analizirane s obzirom na lokalizaciju nakupljanja radiofarmaka (gastroduodenum, tanko crijevo, kolon, rektosigmoid) te s obzirom na izgled nakupljanja (bez nakupljanja, segmentalno, difuzno, fokalno).
REZULTATI: Podaci su prikupljeni bez tehničkih poteškoća. U nekoliko ispitanika javila se mučnina zbog gastrografina. Kod većine ispitanika bilo je nakupljanja radiofarmaka (58,89%) i tu većinu su činili pacijenti koji su koristili gastrografin i vodu. Postojale su razlike u tipu nakupljanja prema lokalizaciji: u gastroduodenumu je češće difuzno, u tankom crijevu segmentalno.
ZAKLJUČAK: Peroralna kontrastna sredstva u PET/CT dijagnostici pospješuju vizualizaciju crijeva i time omogućuju lakšu analizu fuziranih slika. Ne stvaraju klinički značajne artefakte, a njihov utjecaj na povećano nakupljanje FDG-a također nije klinički značajan stoga možemo zaključiti da bi bilo od koristi primjenjivati peroralna kontrastna sredstva rutinski u svih pacijenata u PET/CT dijagnostici, a ne samo kod pacijenata s gastrointestinalnim bolestima.
Abstract (english) OBJECTIVE: PET / CT is a hybrid technique that produces morphological and metabolic imaging of the whole-body using the radiopharmaceutical 18F-FDG. Because of these possibilities PET / CT has the largest application in clinical oncology for tumor diagnosis and monitoring of diseases and radiotherapy. Using an oral contrast is an integral part of the PET / CT protocol to fit the lumen of the intestine and therefore allowing better visualization of the gastrointestinal tract. The purpose of this study was to evaluate the use of oral contrast in PET / CT diagnosis and answer the following questions: Do oral contrasts enhance or hinder the analysis obtained by PET / CT images; does it affect on accumulation of FDG in the GI tract; does it create artifacts, and whether it is necessary to apply oral contrasts routinely in all patients which are conducting the PET / CT scan or only for those who were instructed to scan for diseases of the GI tract.
MATERIALS AND METHODS: 90 patients were divided into 3 groups: 30 patients without oral contrast; 30 patients who used water as an oral contrast; 30 patients who used Gastrografin solution (20 mL Gastrografin in a liter of water). They drank oral contrast through an hour, before the start of the scan. Images were analyzed considering the localization of radionuclide uptake (gastroduodenum, small intestine, colon, rectosigmoid) and considering the appearance of accumulation (without accumulation, segmental, diffuse, focal).
RESULTS: Data was collected without technical difficulties. In several respondents nausea had occured due Gastrografin. The majority of the respondents had radionuclide uptake (58,89%) and that majority were patients who used gastrografin and water. There were differences in the type of buildup localization: gastroduodenum often had diffuse accumulation, the small intestine had segmental accumulation.
CONCLUSION: Oral contrast agents in PET / CT diagnosis enhance visualization of the intestine, thus allowing easier analysis of fused images. They do not produce clinically significant artifacts, and their impact on the increased accumulation of FDG was also not clinically significant, therefore it can be concluded that it would be useful to apply the oral contrast agents routinely in all patients in PET / CT for diagnosis, not only for patients with gastrointestinal diseases.
Keywords
PET/CT
morfološko
metaboličko
klinička onkologija
Keywords (english)
PET / CT
morphological
metabolic
clinical oncology
Language croatian
URN:NBN urn:nbn:hr:176:474613
Study programme Title: Radiologic Technology (university/undergraduate) Study programme type: university Study level: undergraduate Academic / professional title: sveučilišni prvostupnik/prvostupnica (baccalaureus/baccalaurea) radiološke tehnologije (sveučilišni prvostupnik/prvostupnica (baccalaureus/baccalaurea) radiološke tehnologije)
Type of resource Text
File origin Born digital
Access conditions Open access
Terms of use
Created on 2020-06-09 07:10:09