Search Results - "Panayiotakis, George S."

Applications of Generative Adversarial Networks (GANs) in Positron Emission Tomography (PET) imaging: A review by Apostolopoulos, Ioannis D., Papathanasiou, Nikolaos D., Apostolopoulos, Dimitris J., Panayiotakis, George S.

“…Purpose This paper reviews recent applications of Generative Adversarial Networks (GANs) in Positron Emission Tomography (PET) imaging. Recent advances in Deep…”
Get full text

Explainable Artificial Intelligence Method (ParaNet+) Localises Abnormal Parathyroid Glands in Scintigraphic Scans of Patients with Primary Hyperparathyroidism by Apostolopoulos, Dimitris J, Apostolopoulos, Ioannis D, Papathanasiou, Nikolaos D, Spyridonidis, Trifon, Panayiotakis, George S

“…The pre-operative localisation of abnormal parathyroid glands (PG) in parathyroid scintigraphy is essential for suggesting treatment and assisting surgery…”
Get full text

Detection and Localisation of Abnormal Parathyroid Glands: An Explainable Deep Learning Approach by Apostolopoulos, Dimitris J, Apostolopoulos, Ioannis D, Papathanasiou, Nikolaos D, Spyridonidis, Trifon, Panayiotakis, George S

“…Parathyroid scintigraphy with 99mTc-sestamibi (MIBI) is an established technique for localising abnormal parathyroid glands (PGs). However, the identification…”
Get full text

Patient Dose Estimation in Computed Tomography-Guided Biopsy Procedures by Siomou, Evangelia, Filippiadis, Dimitrios K, Efstathopoulos, Efstathios P, Antonakos, Ioannis, Panayiotakis, George S

“…This study establishes typical Diagnostic Reference Levels (DRL) values and assesses patient doses in computed tomography (CT)-guided biopsy procedures. The…”
Get full text

Current Clinical Knowledge on GORE EXCLUDER Conformable Abdominal Aortic Aneurysm Repair Endoprosthesis: A Case Series and Literature Review by Pitros, Christos F., Efthymiou, Fotios O., Tsimpoukis, Andreas L., Dimitroukas, Christos P., Zampakis, Petros E., Moulakakis, Konstantinos G., Panayiotakis, George S., Kakkos, Stavros K.

“…The GORE EXCLUDER Conformable abdominal aortic aneurysm (AAA) Endoprosthesis (CEXC), is currently the newest stent-graft system for treating patients with AAA…”
Get full text

Deep Learning Assessment for Mining Important Medical Image Features of Various Modalities by Apostolopoulos, Ioannis D, Papathanasiou, Nikolaos D, Papandrianos, Nikolaos I, Papageorgiou, Elpiniki I, Panayiotakis, George S

“…Deep learning (DL) is a well-established pipeline for feature extraction in medical and nonmedical imaging tasks, such as object detection, segmentation, and…”
Get full text

Modeling granular phosphor screens by Monte Carlo methods by Liaparinos, Panagiotis F., Kandarakis, Ioannis S., Cavouras, Dionisis A., Delis, Harry B., Panayiotakis, George S.

“…The intrinsic phosphor properties are of significant importance for the performance of phosphor screens used in medical imaging systems. In previous…”
Get full text

PATIENT DOSES IN COMMON DIAGNOSTIC X-RAY EXAMINATIONS by Metaxas, Vasileios I, Messaris, Gerasimos A, Lekatou, Aristea N, Petsas, Theodore G, Panayiotakis, George S

“…A local survey was conducted, to evaluate the radiation dose to adult patients who underwent diagnostic X-ray examinations. Patient-related and technical data…”
Get full text

Multi-input deep learning approach for Cardiovascular Disease diagnosis using Myocardial Perfusion Imaging and clinical data by Apostolopoulos, Ioannis D., Apostolopoulos, Dimitris I., Spyridonidis, Trifon I., Papathanasiou, Nikolaos D., Panayiotakis, George S.

“…[Display omitted] •Multi input data classification methodology for Coronary Artery Disease diagnosis.•Integration of InceptionV3 network and Random Forest…”
Get full text

Patient dose in CT angiography examinations: An institutional survey by Metaxas, Vasileios I., Dimitroukas, Christos P., Efthymiou, Fotios O., Zampakis, Petros E., Panayiotakis, George S., Kalogeropoulou, Christina P.

“…This study aims to evaluate the radiation dose during five computed tomography angiography (CTA) examinations performed with a GE Light Speed 16 (16-slice) and…”
Get full text

LOW BMI PATIENT DOSE IN DIGITAL RADIOGRAPHY by Efthymiou, Fotios O, Metaxas, Vasileios I, Dimitroukas, Christos P, Panayiotakis, George S

“…Abstract In this study, the radiation dose received by 364 low body mass index (BMI) adult patients undergoing chest, abdomen, lumbar spine, kidneys and…”
Get full text

Automatic classification of solitary pulmonary nodules in PET/CT imaging employing transfer learning techniques by Apostolopoulos, Ioannis D., Pintelas, Emmanuel G., Livieris, Ioannis E., Apostolopoulos, Dimitris J., Papathanasiou, Nikolaos D., Pintelas, Panagiotis E., Panayiotakis, George S.

“…Early and automatic diagnosis of Solitary Pulmonary Nodules (SPN) in Computed Tomography (CT) chest scans can provide early treatment for patients with lung…”
Get full text

Patient dose audit in common CT examinations by Dimitroukas, Christos P., Metaxas, Vasileios I., Efthymiou, Fotios O., Kalogeropoulou, Christina P., Zampakis, Petros E., Panayiotakis, George S.

“…A dose audit was performed to evaluate the radiation dose to 573 adult patients, who underwent eleven common CT examinations in two different CT scanners: one…”
Get full text

PATIENT DOSE IN DIGITAL RADIOGRAPHY UTILISING BMI CLASSIFICATION by Metaxas, Vasileios I, Messaris, Gerasimos A, Lekatou, Aristea N, Petsas, Theodore G, Panayiotakis, George S

“…Dose audit is important towards optimisation of patients' radiation protection in diagnostic radiography. In this study, the effect of the body mass index…”
Get full text

DOSIMETRIC EVALUATION OF THE TWO-PHASE COMPUTED TOMOGRAPHY IN PARATHYROID GLANDS IMAGING by Dimitroukas, Christos P, Metaxas, Vasileios I, Efthymiou, Fotios O, Zampakis, Petros E, Kalogeropoulou, Christina P, Panayiotakis, George S

“…Abstract This study evaluates the patient radiation dose from the two-phase protocols of two different computed tomography (CT) systems and compares this with…”
Get full text

PATIENT SIZE INDICES AND DOSE IN FLUOROSCOPICALLY GUIDED LUMBAR DISCECTOMY AND FUSION: A PRELIMINARY STUDY by Metaxas, Vasileios I, Gatzounis, George D, Tzortzidis, Fotios N, Panayiotakis, George S

“…Abstract Patient dose values varied significantly during interventional procedures, mainly due to the patient size, operators’ choices and clinical complexity…”
Get full text

BMI-Based organ doses in endovascular aneurysm repair interventions utilising Monte Carlo simulation by Efthymiou, Fotios O., Metaxas, Vasileios I., Dimitroukas, Christos P., Kakkos, Stavros K., Moulakakis, Konstantinos G., Belavgenis, Andreas C., Panayiotakis, George S.

“…In this study, the effect of body-mass-index (BMI) on organ doses (ODs) during infrarenal endovascular-aneurysm-repair (EVAR) procedures was evaluated…”
Get full text

KERMA-AREA PRODUCT, ENTRANCE SURFACE DOSE AND EFFECTIVE DOSE IN ABDOMINAL ENDOVASCULAR ANEURYSM REPAIR by Efthymiou, Fotios O, Metaxas, Vasileios I, Dimitroukas, Christos P, Kakkos, Stavros K, Panayiotakis, George S

“…Abstract This study aims to evaluate patient radiation dose during fluoroscopically guided endovascular aneurysm repair (EVAR) procedures. Fluoroscopy time…”
Get full text

OPTIMISATION OF PATIENT DOSE AND IMAGE QUALITY IN FLUOROSCOPICALLY GUIDED CERVICAL SPINE SURGERY: A PHANTOM-BASED STUDY by Metaxas, Vasileios I, Messaris, Gerasimos A, Gatzounis, George D, Panayiotakis, George S

“…The purpose of the current study was to provide useful data, which may help neurosurgeons to manage the patient dose and image quality in spinal surgery…”
Get full text

FACTORS INFLUENCING FLUOROSCOPY TIME IN ENDOVASCULAR TREATMENT OF ABDOMINAL ANEURYSMS: A RETROSPECTIVE STUDY by Efthymiou, Fotios O, Kakkos, Stavros K, Metaxas, Vasileios I, Dimitroukas, Christos P, Moulakakis, Konstantinos G, Papadoulas, Spyros I, Kouri, Natasa K, Tsimpoukis, Andreas L, Nikolakopoulos, Konstantinos M, Papageorgopoulou, Chrysanthi P, Panayiotakis, George S

“…Abstract Patients who undergo endovascular aortic aneurysm repair (EVAR) may require prolonged radiation exposure affected by several factors. The objectives…”
Get full text