Ali Parach
Department of Medical Physics, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
[ 1 ] - Image-based versus atlas-based patient-specific S-value assessment for Samarium-153 EDTMP cancer palliative care: A short study
Introduction: Use of SPECT/CT data is the most accurate method for patient-specific internal dosimetry when isotopes emit single gamma rays. The manual or semi-automatic segmentation of organs is a major obstacle that slows down and limits the patient-specific dosimetry. Using digital phantoms that mimic patient’s anatomy can bypass the segmentation step and facilitate the dosi...
[ 2 ] - تخمین دوز جذبی ناشی از رادیوداروی 99mTc-DMSA در بیماران کودک تحت اسکن کلیه با استفاده از نرم‌افزار MIRDose و با بکارگیری روش ترکیبی پلنار SPECT
Introduction: 99mTc–Dimercaptosuccinic Acid (DMSA) as evaluation of pediatric genitourinary abnormalities has an important role in pediatric nuclear medicine. The aim of this study was to estimate organs absorbed dose for children injected by 99mTc DMSA using MIRDOSE software and hybrid planar/SPECT method. Methods: After injection of 99mTc-DMSA, ten children with genitourinary abnorma...
[ 3 ] - برآورد دوز جذبی ارگان های بدن ناشی از رادیوداروی 99mTc –MDP در بیماران تحت اسکن استخوان به روش دزیمتری اختصاصی و با بکارگیری روش ترکیبی پلنار/SPECT
Introduction: Bone scan is a nuclear medicine scan test, which leads to finding specific abnormalities in the bone. Methylene Diphosphonate (MDP) is used to bone scan. This combination is absorbed by bone tissue and is excreted by the kidneys and bladder. The purpose of this study was to estimate the absorbed dose of organs in bone scan with injection MDP radiopharmaceutical using Mirdose softw...
[ 4 ] - The effect of incorporating the quantitative analysis besides visual assessments of 18F-FDG brain PET images for the localization of epileptogenic zones
Introduction: FDG Brain PET is a valuable paraclinical tool for presurgical assessments of patients suffering from refractory epilepsy. By the widespread accessibility of PET, recognizing the functional lesions has become a current practical method especially in preoperative evaluations of the partial epilepsy disorders. The aim of our study was to assess the impact of quantit...
[ 5 ] - Evaluation of the annual effective dose to Cath Lab staff in the Afshar Hospital, Yazd and suggesting the radiation protection strategies to better management of occupational dose
Introduction Due to the increasing use of angiography procedures and the higher risk of deterministic and stochastic effects for radiation workers of these sections than other radiological procedures, radiation safety is very important in angiography staff. So, this study aimed to obtain the effective dose of angiography staff and compare them with the standard dose limit and finally outline th...
[ 6 ] - Evaluation of Factors Affecting Absorbed Dose, Optimization Methods and Patient Dose Reduction in Dental Cone Beam CT (CBCT)
Introduction: Nowadays the use of cone beam computed tomography in dental imaging is increasing, although this method has a much lower dose than conventional CT scans, it delivers a higher dose than the panoramic and periapical patients therefore, , the aim of this study was to investigate the factors affecting the patients' dose in dental CBCTs and methods of optimizing and reducing the patien...
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