Search Results - "TSALAFOUTAS, Ioannis A"

Image Quality Comparison between Digital Breast Tomosynthesis Images and 2D Mammographic Images Using the CDMAM Test Object by Tsalafoutas, Ioannis A., Epistatou, Angeliki C., Delibasis, Konstantinos K.

“…To evaluate the image quality (IQ) of synthesized two-dimensional (s2D) and tomographic layer (TL) mammographic images in comparison to the 2D digital…”
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From the use of exposure index in quality control testing to the use of exposure index for quality control of clinical images by Tsalafoutas, Ioannis A., AlKhazzam, Shady, AlNaemi, Huda, Kharita, Mohammed Hassan

“…The exposure index (EI) is used in routine quality control (QC) tests performed in the radiographic equipment installed in our hospitals. This study aimed at…”
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An Automated Method for Quality Control in MRI Systems: Methods and Considerations by Epistatou, Angeliki C., Tsalafoutas, Ioannis A., Delibasis, Konstantinos K.

“…Objective: The purpose of this study was to develop an automated method for performing quality control (QC) tests in magnetic resonance imaging (MRI) systems,…”
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Electronic collimation of radiographic images: does it comprise an overexposure risk? by Tsalafoutas, Ioannis A

“…To investigate whether electronic collimation software, which is available in all digital X-ray systems, may comprise an overexposure risk. In the context of…”
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The impact of automatic tube current modulation related settings of a modern GE CT scanner on image quality and patient dose; details do matter by Tsalafoutas, Ioannis A., AlKhazzam, Shady, Kharita, Mohammed Hassan

“…Purpose To investigate the operation principles of the automatic tube current modulation (ATCM) of a modern GE healthcare CT scanner, and the impact of related…”
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Automatic image quality evaluation in digital radiography using for‐processing and for‐presentation images by Tsalafoutas, Ioannis A., AlKhazzam, Shady, Tsapaki, Virginia, Kharita, Mohammed Hassan

“…Purpose To investigate the impact of digital image post‐processing algorithms on various image quality (IQ) metrics of radiographic images under different…”
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Evaluation of automatic tube current modulation of CT scanners using a dedicated and the CTDI dosimetry phantoms by Tsalafoutas, Ioannis A., AlKhazzam, Shady, AlNaemi, Huda, Kharita, Mohammed Hassan

“…Purpose To investigate the operation principles of the automatic tube current modulation (ATCM) of a CT scanner, using a dedicated phantom and the CT dosimetry…”
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Validation of the geometric equivalent field concept in total scatter factor calculations, for half‐, quarter‐ and off‐isocenter asymmetric square fields by Hmodi, Mohammad Samir, Nahili, Majeda, Tsalafoutas, Ioannis A., Saad, Bassam, Hasan, Ali, Anjak, Ousamah, Shamout, Karlos

“…Objective Monitor unit (MU) verification for any symmetric or asymmetric field is performed using a total scatter factor (Scp), that is calculated based on the…”
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Digital radiography image quality evaluation using various phantoms and software by Tsalafoutas, Ioannis A., AlKhazzam, Shady, Tsapaki, Virginia, AlNaemi, Huda, Kharita, Mohammed Hassan

“…Purpose To investigate the effect of the exposure parameters on image quality (IQ) metrics of phantom images, obtained automatically using software or from…”
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Patient dose considerations in computed tomography examinations by Tsalafoutas, Ioannis A, Koukourakis, Georgios V

“…Ionizing radiation is extensively used in medicine and its contribution to both diagnosis and therapy is undisputable.However,the use of ionizing radiation…”
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Technical specifications of dose management systems: An international atomic energy agency survey by Tsalafoutas, Ioannis A., Arlany, Laurentcia, Titovich, Egor, Pynda, Yaroslav, Ruggeri, Ricardo, Sánchez, Roberto Mariano, Reiser, Ingrid, Tsapaki, Virginia

“…Purpose Dose management systems (DMS) have been introduced in radiological services to facilitate patient radiation dose management and optimization in medical…”
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Radiation dose monitoring in computed tomography: Status, options and limitations by Tsalafoutas, Ioannis A., Hassan Kharita, Mohammad, Al-Naemi, Huda, Kalra, Mannudeep K.

“…•CT contributes to the majority of radiation dose associated with diagnostic imaging procedures.•Substantial variations in scan protocols and radiation doses…”
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Patient exposure during videofluoroscopic swallowing studies performed by speech-language pathologists by Tsalafoutas, Ioannis A, AlKhazzam, Shady, Hussain, Mohammed S, Omar, Ahmed J, Bawazir, Salwa S, AlHamad, Suad A, AlNaemi, Huda, Kharita, Mohammad H

“…Abstract Videofluoroscopic swallowing studies (VFSSs) are fluoroscopic examinations performed by speech and language pathologists (SLPs), for the evaluation of…”
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Utilizing a simple CT dosimetry phantom for the comprehension of the operational characteristics of CT AEC systems by Tsalafoutas, Ioannis A., Varsamidis, Athanasios, Thalassinou, Stella, Efstathopoulos, Efstathios P.

“…Purpose: To investigate the utility of the nested polymethylacrylate (PMMA) phantom (which is available in many CT facilities for CTDI measurements), as a tool…”
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Development and implementation of a quality control protocol for B-mode ultrasound equipment by Tsapaki, Virginia, Tsalafoutas, Ioannis A., Triantopoulou, Sotiria S., Triantopoulou, Charikleia

“…Purpose Quality assurance (QA) of ultrasound (US) equipment is currently required in only a few countries around the world. In Greece, no national or other…”
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CT-Guided Interventional Procedures without CT Fluoroscopy Assistance: Patient Effective Dose and Absorbed Dose Considerations by Tsalafoutas, Ioannis A, Tsapaki, Virginia, Triantopoulou, Charicleia, Gorantonaki, Akrivi, Papailiou, John

“…The purpose of this study was to determine patient effective dose (E) and peak absorbed dose to the skin of the patient from various CT-guided interventional…”
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The impact of overscan on patient dose with first generation multislice CT scanners by Tsalafoutas, Ioannis A

“…Abstract Helical scanning requires the irradiation of larger lengths than those planned. This is referred to as overscan and results to an increase of patient…”
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A Comprehensive Method for Calculating Patient Effective Dose and Other Dosimetric Quantities From CT DICOM Images by TSALAFOUTAS, Loannis A, THALASSINOU, Stella, EFSTATHOPOULOS, Efstathios P

“…The purpose of this article is to present a method for the calculation of effective dose using the DICOM header information of CT images. Using specialized…”
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CT dosimetry considerations in non typical conditions: The effect of scan field of view and table height selection by Tsalafoutas, Ioannis A, Georgolopoulou, Paraskevi, Abatzoglou, Ioannis

“…Abstract Purpose To experimentally investigate the effect of the scan field of view (SFOV) selection and table height settings on the Computed Tomography Dose…”
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Estimation of radiation doses to patients and surgeons from various fluoroscopically guided orthopaedic surgeries by Tsalafoutas, Ioannis A., Tsapaki, Virginia, Kaliakmanis, Alkiviadis, Pneumaticos, Spiridon, Tsoronis, Fotis, Koulentianos, Elias D., Papachristou, George

“…In this study, a mathematical method was used to estimate the entrance surface dose (ESD) to the patient and the scattered dose (Ds) to the operating surgeon…”
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