Breast cancer detection and classification with digital breast tomosynthesis: a two-stage deep learning approach.

Purpose: The purpose of this study was to propose a new computer-assisted two-staged diagnosis system that combines a modified deep learning (DL) architecture (VGG19) for the classification of digital breast tomosynthesis (DBT) images with the detection of tumors as benign or cancerous using the You Only Look Once version 5 (YOLOv5) model combined with the convolutional block attention module (CBAM) (known as YOLOv5-CBAM).

Methods: In the modified version of VGG19, eight additional layers were integrated, comprising four batch normalization layers and four additional pooling layers (two max pooling and two average pooling). The CBAM was incorporated into the YOLOv5 model structure after each feature fusion.

Patient, Referring Physician, and Radiologist Opinions Over Time on Providing Patients Access to Radiology Reports: A Systematic Review.

Objective: Patients increasingly have access to their radiology reports. This systematic review examined the opinions of patients, referring physicians, and radiologists over time on providing patients full access to their radiology reports.

Methods: A systematic review examining quantitative, qualitative, and mixed methods research using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines (PROSPERO CRD42023466502).

Proposing Multiregional Diagnostic Reference Levels for Common CT Angiography Examinations in Saudi Arabia.

Objectives: Diagnostic reference levels (DRLs) are crucial tools for optimizing radiation exposure during different radiological examinations. This study aimed to establish preliminary DRLs for commonly performed computed tomographic angiography (CTA) examinations in Saudi Arabia.

Methods: Data for three types of CTA examinations (cerebral, pulmonary, and lower-extremity) were collected from six medical cities across Saudi Arabia.

Assessment of Pregnant Women's Knowledge and Perceptions of Antenatal Ultrasound in Saudi Arabia.

This study aims to evaluate pregnant women's knowledge of antenatal ultrasound in Saudi Arabia and its correlation with demographic factors like age and education to enhance prenatal care. A cross-sectional study was conducted in six Saudi Arabian hospitals, involving 22 questions split between sociodemographic information and knowledge of antenatal ultrasound. Descriptive statistics were used to characterize the participants' demographics and responses.

Patient perspectives on ionising radiation exposure from computed tomography in Saudi Arabia: a knowledge and perception study.

The objective of this study was to evaluate patient knowledge and understanding of ionising radiation and dosage, as well as the accompanying risks related to computed tomography scans. A total of 412 outpatients who underwent computed tomography (CT) scans were surveyed to assess their understanding of radiation dose and exposure risks. CT was correctly classified as an ionising radiation by 56.

Estimation of organ and effective doses of CBCT scans of radiotherapy using size-specific field of view (FOV): a Monte Carlo study.

The kV cone beam computed tomography (CBCT) is one of the most common imaging modalities used for image-guided radiation therapy (IGRT) procedures. Additional doses are delivered to patients, thus assessment and optimization of the imaging doses should be taken into consideration. This study aimed to investigate the influence of using fixed and patient-specific FOVs on the patient dose.

Estimation of size-specific dose estimate (SSDE) of CT scans using an effective diameter electron density.

Objective: An assessment of the effective diameter of a patient's body using electron densities of tissues inside the scan area (D) was proposed to overcome challenges associated with the estimation of water-equivalent diameter (D), which is used for size-specific dose estimate (SSDE). The aims of this study were to (1) investigate the D method in two different forms using a wide range of patient sizes and scanning protocols, and (2) compare between four methods used to estimate the patient size for SSDE.

Materials And Methods: Under IRB approval, a total of 350 patients of varying sizes have been collected retrospectively from the Hospital.

The prevalence of harassment of diagnostic radiography and radiation therapy students whilst on clinical placement in the Republic of Ireland.

Objective: To determine if student radiographers and radiation therapists experience harassment (verbal, physical or sexual) while on clinical placement and their awareness of policies in place to report such incidents.

Methods: An online questionnaire developed from the World Health Organisation's questionnaire on workplace violence in healthcare and the higher education authority (HEA) national survey of student experiences of sexual violence and harassment in Irish HEIs was used. Undergraduate and postgraduate diagnostic radiography and radiation therapy students in the Republic of Ireland to be included and have completed a minimum of four weeks of clinical placement.

Natural Radioactivity of Granitic Rocks and Their Health Risk around Ingesana Mountains, Sudan.

This work was carried out mainly to analyze radioactive elements 40 K, 232 Th, and 226 Ra and non-radioactive elements in some granitic rocks and study their health risk for humans and non-humans. Radioisotope activity was evaluated using a high-purity germanium (HPGe) detector, and various radiological hazard indices were calculated. We also measured some non-radioactive elements using x-ray fluorescence analysis and performed Pearson correlation analysis to examine the relationships between the radionuclides and the non-radioactive elements.

Provision of Safe Anesthesia in Magnetic Resonance Environments: Degree of Compliance with International Guidelines in Saudi Arabia.

Background: The lack of local guidelines and regulations for the administration of anesthesia in magnetic resonance imaging (MRI) units presents a potential risk to patient safety in Saudi Arabia. Hence, this study aimed to evaluate the extent to which hospitals in Saudi Arabia follow international guidelines and recommendations for the safe and effective administration of anesthesia in an MRI environment.

Methods: This study used a questionnaire that was distributed to 31 medical facilities in Saudi Arabia that provided anesthesia in MRI units.

The effect of contact radiation shielding on breast dose during CT abdomen-pelvis: a phantom study.

This study aims to investigate if contact shielding reduces breast radiation dose during computed tomography (CT) abdomen-pelvis examinations using automatic tube current modulation to protect one of the four most radiosensitive organs during CT examinations. Dose measurements were taken with and without contact shielding across the anterior and lateral aspects of the breasts and with and without organ dose modulation (ODM) to quantify achievable dose reductions. Although there are no statistically significant findings, when comparing with and without shielding, the mean breast surface dose was reduced by 0.

The effect of breast shielding outside the field of view on breast entrance surface dose in axial X-ray examinations: a phantom study.

Purpose: The purpose of this study was to evaluate the effect of outside-field-of-view (FOV) lead shielding on the entrance surface dose (ESD) of the breast on an anthropomorphic X-ray phantom for a variety of axial skeleton X-ray examinations.

Methods: Using an anthropomorphic phantom and radiation dosimeter, the ESD of the breast was measured with and without outside-FOV shielding in anterior-posterior (AP) abdomen, AP cervical spine, occipitomental 30° (OM30) facial bones, AP lumbar spine, and lateral lumbar spine radiography. The effect of several exposure parameters, including a low milliampere-seconds technique, grid use, automatic exposure control use, wraparound lead (WAL) use, trolley use, and X-ray table use, on the ESD of the breast with and without outside-FOV shielding was investigated.

Safety Survey on Lone Working Magnetic Resonance Imaging Technologists in Saudi Arabia.

Purpose: The American College of Radiology (ACR) requires MR personnel not to work alone due to the increased risk of safety issues such as projectiles, aggressive patients, and technologist fatigue. As a result, we intend to assess the current safety of lone-working MRI technologists in MRI departments in Saudi Arabia.

Materials And Methods: A cross-sectional study using a self-report questionnaire was conducted in 88 Saudi hospitals.

JUSTIFICATION OF IMAGING IN DENTAL CLINICS: DOES RADIATION KNOWLEDGE PLAY A ROLE?

The study aims to investigate dentists' knowledge and consideration of radiation in relation to their referral practices and use of referral guidelines for imaging in Saudi Arabia. A cross-sectional study was conducted among dentists in different occupational positions in Saudi Arabia. The analysis showed that 68% of the dentists knew of imaging referral guidelines to consult before ordering an imaging exam.

Assessment of Knowledge and Awareness About Breast Self-Examination Among University Female Students in Saudi Arabia.

Objective: This study aims to evaluate the knowledge and awareness of female university students in Saudi Arabia about breast self-examination (BSE).

Methods: From January to March 2022, an online self-administered questionnaire covering socio-demographic data and BSE Knowledge was distributed to female students enrolled in Saudi universities. The survey link was disseminated online and through student leaders.

Estimation of radiation doses and lifetime attributable risk of radiation-induced cancer in the uterus and prostate from abdomen pelvis CT examinations.

Computed tomography (CT) scans are one of the most common radiation imaging modalities, and CT scans are rising steadily worldwide. CT has the potential to enhance radiography practice, but it also has the risk of drastically increasing patient doses. One CT procedure for the abdomen pelvis (AP) area can expose a patient's prostate or uterus to a substantial radiation dose, leading to concerns about radiation-induced cancer.

Incidence of Gallbladder Stone Formation After Bariatric Surgery Using Ultrasound Imaging in the Southern Region of Saudi Arabia.

Background Bariatric surgery is performed for accomplishing weight loss, which can save patients from diseases associated with morbid obesity. However, rapid weight loss is one of the most important risk factors contributing to the formation of gallbladder stones. The aim of this study is to investigate the prevalence of gallstone formation among patients in the southern region of Saudi Arabia who underwent bariatric surgery and to evaluate the association between several parameters and gallstone development in these patients.

OCCUPATIONAL DOSE OF OPERATORS OF NUCLEAR MOISTURE DENSITY GAUGES USED IN PAVEMENT CONSTRUCTION IN SAUDI ARABIA USING THERMOLUMINESCENT DOSEMETERS.

The aim of this study was to estimate the radiation effective doses for operators of nuclear moisture density gauges that are used in pavement construction in the road industry in Saudi Arabia from 2016 to 2019. The effective doses of 278 workers were estimated using thermoluminescent dosemeters (TLD-700). The analysis of the dosimetry data revealed that the mean annual effective dose for all workers averaged over the study period was 0.

The Impact of the COVID-19 Pandemic on Medical Imaging Case Volumes in Aseer Region: A Retrospective Study.

Unlabelled: COVID-19 has had a significant impact on global health systems. The aim of this study was to evaluate how imaging volumes and imaging types in radiology departments have been affected by the COVID-19 pandemic across different locations.

Methods: Imaging volumes in the Aseer region (in the south of Saudi Arabia) across main hospitals were reviewed retrospectively including all cases referred from different locations (outpatient, inpatient and emergency departments).

Estimation of patient effective doses in PET/CT- F-Sodium Fluoride examinations.

The positron emitters (F-Sodium Fluoride (NaF)) and X-rays used in Positron emission tomography (PET) combined with computed tomography (PET/CT) imaging have a high radiation dose, which results in a high patient dose. The present research intends to determine the radiation dose and risks associated with PET/CT- 18F-Sodium fluoride examinations in patients. The 18F-NaF PET/CT was used to investigate the doses of 86 patients.

ASSESSMENT OF EXTERNAL OCCUPATIONAL DOSE OF PHOSPHATE MINE WORKERS IN SAUDI ARABIA USING THERMOLUMINESCENT DOSEMETERS.

Workers in the mining industry face the problem of radiation exposure from naturally occurring radioactive materials. Thus, this study aimed to estimate a Hp (10) doses for mine workers in the phosphate mining industry in Saudi Arabia. The personal dose equivalent [Hp (10)] of 606 mine workers in the phosphate mining industry in Saudi Arabia were obtained from 2016 to 2019 using thermoluminescent dosemeters (TLDs).

Radiologic technologists in Saudi Arabia: Does long-term exposure to radiation increase the risk of hematological disorders?

Objectives: To determine the influence of prolonged exposure to radiation based on dosimeter readings on hematological parameters among radiologic technologists (RTs) in Saudi Arabia.

Methods: The study was specifically conducted on selected RTs with experience of more than 10 years and the highest thermoluminescent dosimeter (TLD) readings among all RTs in the Radiological Department, Sabya General Hospital, Ministry of Health, Saudi Arabia from August to October 2020. The RTs group was compared with a control group of non-irradiated participants.

OCCUPATIONAL DOSE ASSESSMENT FOR NUCLEAR MEDICINE AND RADIOTHERAPY TECHNOLOGISTS IN SAUDI ARABIA.

This study estimated the occupational radiation dose received by nuclear medicine and radiotherapy technologists in Saudi Arabia. A retrospective analysis of personal dosemetry data of 1243 nuclear medicine and radiotherapy technologists from 28 medical centers across Saudi Arabia from 2015 to 2019 was conducted. Thermoluminescent dosemeters were employed to monitor the occupational radiation dose.

A 5-YEAR RETROSPECTIVE ANALYSIS OF IONIZING RADIATION DOSE TO HYBRID OPERATING ROOM PERSONNEL IN SAUDI ARABIA.

The annual average effective dose (ED) for operating room personnel (ORP) in Saudi Arabia was estimated from the period of 2015-2019 using thermoluminescent dosemeters. A retrospective analysis was conducted on annual EDs for 7530 ORP working across 52 hospitals. These workers were only exposed to radiation in the operating room.