64 documents found, page 1 of 7
Non-pharmacological strategies to reduce anxiety in patients undergoing PET/CT:...
Pedro, Beatriz; Henriques, Daniela; Grilo, Ana; Vieira, LinaIntroduction – Anxiety, characterized by feelings of tension and concern regarding situations that the individual perceives as potentially dangerous or unknown, is one of the emotional reactions experienced by cancer patients at the time of the Positron Emission Tomography/Computed Tomography (PET/CT) exam. High levels of anxiety can negatively influence patient experience and satisfaction, as well as have imag...
MUGA processing: intra and interoperator variability impact using manual and au...
Belo, Rita; Carvalhal, Cristiana; Figueiredo, Sérgio; carol, Elisabete; Vieira, LinaIntroduction – Multigated acquisition (MUGA) scan is mainly used for the assessment of left ventricular ejection fraction (LVEF) in patients who undergo cardiotoxic chemotherapy drugs. When applying automatic (A) or manual (M) processing methods, some biases in the quantitative metrics can be obtained. The aim of this study is to evaluate the influence of A and M methods, specifically, the inter and intraoperat...
Exposure of nuclear medicine technologists during pulmonary ventilation scan
Alves, M.; Duarte, Ana Cristina; Mylkivska, A.; Pereira, E.; Jerónimo, V.; Carolino, Elisabete; Vieira, LinaIntroduction – The ventilation technique requires a patient to inhale a radiopharmaceutical. During the procedure, the technologist risks being contaminated with radioactive gas. The aim of the study – To evaluate the exposure to radiation of the nuclear medicine technologists during lung ventilation studies with 99mTc-Technegas® through the monitoring of external contaminatio...
Efficacy of music on anxiety control during PET/CT scan
Santos, Ana; Martins, Ana; Sousa, Carolina; Vieira, Lina; Grilo, Ana; Carolino, Elisabete; Castro, Maria; Alonso, JuanIntroduction – The control of the anxiety of patients performing positron emission tomography-computed tomography (PET/CT) scans is quite important since this emotional reaction may interfere with the patient’s experience and can even compromise the diagnosis. Music has been used to control patients’ anxiety in several clinical settings. Objective – To verify the efficacy of listening to music in the control of...
Influence of the segmentation method – automatic vs manual – and the presence o...
Machado, Marisa; Jorge, Ricardo; Figueiredo, Sérgio; Carolino, Elisabete; Vieira, LinaIntroduction – Myocardial Perfusion Imaging (MPI) by single-photon emission computed tomography (SPECT) is one of the most widely used Non-invasive imaging tests in the diagnosis of coronary artery disease that requires correct segmentation of the left ventricle (LV), to extract perfusion parameters. The aim of this study is to evaluate the influence of automatic (A) vs. manual (M) segmentation in the quantific...
Influence of the color scale in qualitative assessment of brain perfusion imaging
Santos, Wilson; Carolino, Elisabete; Figueiredo, Sérgio; Vieira, LinaIntroduction – Brain perfusion imaging (BPI) is an imaging study that allows the acquisition of three-dimensional tomographic images of the biodistribution of a tracer, reflecting regional brain perfusion. Therefore, the color scale used has a major role in the clinical interpretation of these images. Aim – To study the influence of the color scales in qualitative evaluation of the BPI and to conclude which are...
Influence of the color scale in qualitative assessment of myocardial perfusion ...
Figueiredo, Andreia; Ramos, Emília; Carolino, Elisabete; Vaz, Tânia; Vieira, LinaIntroduction – Myocardial perfusion imaging (MPI) is a widely accepted study applied in the diagnosis and follow-up of coronary artery disease. Interpretation of myocardial perfusion images requires visual analysis of the reconstructed slices. The color scale selected can have a significant effect on the final appearance of the image and on the clinical interpretation of myocardial perfusion. Aim – Evaluate the...
Influence of operator’s professional experience and visual function in the myoc...
Reimão, Ana Sofia; Pereira, Joana; Nobre, Matina; Nascimento, Fábio; Carolino, Elisabete; Poças, Ilda Maria; Vieira, LinaIntroduction – Myocardial perfusion scan (MPS) has an important role in the diagnosis, evaluation, and follow-up of patients with coronary artery disease being the semiautomatic processing widely used for routine clinical practice. Since nuclear medicine technologists (NMT) performance might be affected by individual and environmental factors, different professionals that process the same data will provide diff...
Relative renal function estimate by renal scintigraphy with 99mTc-DMSA: influen...
Amaro, Andreia; Silva, H.; Santos, A. I.; Carolino, Elisabete; Vaz, Tânia; Vieira, LinaIntroduction – The estimate of relative renal function (RRF) through scintigraphy with dimercaptosuccinic acid labeled with Technetium-99 metastable (99mTc-DMSA) may be influenced by kidney depth (KD), due to attenuation by soft tissue surrounded kidneys. Considering that rarely this KD is known, several methods for attenuation correction (AC) have been developed, namely those using empirical formulae, such as ...
PET/CT with 18-fluor-fluorodeoxyglucose in the follow-up of the cutaneous malig...
Batanete, Sofia; Infante, J. R.; Rayo, J. I.; Vieira, LinaBackground – Cutaneous malignant melanoma (CMM) is one of the most lethal malignancies and the follow-up involves, in addition to clinical examination and analysis of tumor markers, several imaging methods such as the Positron Emission Tomography/Computed Tomography (PET/CT) exam with 18fluor-fluorodeoxyglucose (18F-FDG). The aim of the study is to evaluate the utility of PET/CT in the assessment of the extensi...