Sistem Pemantauan Dosis (Dose Monitoring System) Dalam Upaya Meningkatkan Kualitas Pelayanan Radiologi Diagnostik dan Intervensional

2021 ◽  
Author(s):  
Tuti Amalia ◽  
Keyword(s):  
Computed Tomography ◽  
Interventional Radiology ◽  
Effective Dose ◽  
Monitoring System ◽  
Interventional Procedures ◽  
Interventional Procedure ◽  
Radiation Risk ◽  
Imaging Modalities ◽  
Dose Monitoring ◽  
Patient Doses

X-ray-based medical imaging has become one of the most popular imaging modalities today. Computed tomography (CT) and interventional procedures can result in higher radiation exposure for patients compared to other radiographic examinations. There has been an increase in the effective dose of > 100 mSv from some procedures. Recent studies have shown that multiphase CT imaging and repeated imaging provide larger radiation doses in some patients. In considering the effective dose (E) for each patient, it is essential to note that the risk per Sv tends to be greater on average in pediatric patients than in adults. In addition, E can be used to describe the possible risk to the patient. Dose management is essential in monitoring and controlling patient doses. Consistent and systematic monitoring of radiation dose is needed to improve the quality of diagnostic and interventional radiology services. Dose monitoring activities include performance control, optimization of protocols used, corrective actions against non-standard practices, and raising awareness for radiation workers to minimize risks. The use of a dose monitoring system (Dose Monitoring System) responds to concerns about the radiation risk that comes from diagnostic imaging modalities, particularly Computed Tomography (CT) and fluoroscopy in interventional procedures. The dose monitoring system (Dose Monitoring System) has developed into a requirement in monitoring and controlling patient doses and is one of the applications of radiation safety culture that can improve diagnostic and interventional radiology services. Keywords: Computed tomography (CT), effective dose, interventional procedure

scholarly journals Radiation Exposure in Patients with Isolated Limb Trauma: Acceptable or Are We Imaging Too Much?

2020 ◽  
Vol 9 (11) ◽  
pp. 3609
Author(s):  
James A. Wheeler ◽  
Natasha Weaver ◽  
Zsolt J. Balogh ◽  
Herwig Drobetz ◽  
Andrew Kovendy ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Effective Dose ◽  
Radiation Risk ◽  
Plain Film ◽  
Study Cohort ◽  
X Ray ◽  
Cumulative Effective Dose ◽  
Orthopaedic Patients ◽  
Extremity Trauma ◽  
The Mean

The aim of our study was to investigate the cumulative effective dose of radiation resulting from medical imaging in orthopaedic patients with isolated extremity trauma. Deidentified radiology records of consecutive patients without age restriction with isolated extremity trauma requiring operative treatment at a regional hospital were reviewed retrospectively over a 1-year period, and the effective dose per patient for each study type of plain film X-ray, computed tomography, and operative fluoroscopy was used to calculate cumulative effective dose. Values were summarised as mean, ± standard deviation, maximum, and proportion with overdose (>20 mSv). The study cohort included 428 patients (193 male and 235 female) with an average age of 44 years (±28). There were 447 procedures performed, i.e., all involved operative fluoroscopy, 116 involved computed tomography, and 397 involved X-ray. The mean cumulative effective dose per patient was 1.96 mSv (±4.98, 45.12). The mean cumulative effective dose for operative fluoroscopy was 0.32 mSv (±0.73, 5.91), for X-ray was 1.12 mSv (±3.6, 39.23) and for computed tomography was 2.22 mSv (±4.13, 20.14). The mean cumulative effective dose of 1.96 mSv falls below the recommended maximum annual exposure of 20 mSv. This study can serve as a guide for informing clinicians and patients of the acceptable radiation risk in the context of isolated extremity trauma.

scholarly journals Estimated collective effective dose to the population from radiological examinations in Slovenia

2015 ◽  
Vol 49 (1) ◽  
pp. 99-106 ◽  
Author(s):  
Dejan Zontar ◽  
Urban Zdesar ◽  
Dimitrij Kuhelj ◽  
Dean Pekarovic ◽  
Damijan Skrk
Keyword(s):  
Computed Tomography ◽  
Effective Dose ◽  
Systematic Study ◽  
Interventional Procedures ◽  
Population Exposure ◽  
Patient Exposure ◽  
Standard Methodology ◽  
Per Capita ◽  
Radiological Procedures ◽  
Radiological Examinations

Abstract Background. The aim of the study was to systematically evaluate population exposure from diagnostic and interventional radiological procedures in Slovenia. Methods. The study was conducted in scope of the “Dose Datamed 2” project. A standard methodology based on 20 selected radiological procedures was adopted. Frequencies of the procedures were determined via questionnaires that were sent to all providers of radiological procedures while data about patient exposure per procedure were collected from existing databases. Collective effective dose to the population and effective dose per capita were estimated from the collected data (DLP for CT, MGD for mammography and DAP for other procedures) using dose conversion factors. Results. The total collective effective dose to the population from radiological in 2011 was estimated to 1300 manSv and an effective dose per capita to 0.6 mSv of which approximately 2/3 are due to CT procedures. Conclusions. The first systematic study of population exposure to ionising radiation from radiological procedures in Slovenia was performed. The results show that the exposure in Slovenia is under the European average. It confirmed large contributions of computed tomography and interventional procedures, identifying them as the areas that deserve special attention when it comes to justification and optimisation.

Development of a Gripper with Variable Stiffness for a CT-Guided Needle Insertion Robot

2020 ◽  
Vol 32 (3) ◽  
pp. 692-700
Author(s):  
Kento Yokouchi ◽  
Tetsushi Kamegawa ◽  
Takayuki Matsuno ◽  
Takao Hiraki ◽  
Takuya Yamaguchi ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Interventional Radiology ◽  
Interventional Procedures ◽  
Variable Stiffness ◽  
Needle Insertion ◽  
Medical Procedure ◽  
Needle Holder ◽  
Ct Guided ◽  
Jamming Transition ◽  
Ct Radiation

In recent years, interventional radiology (IR) as a medical procedure has attracted considerable attention. Among the various IR techniques, computed tomography (CT)-guided IR is performed by inserting a specific needle into a lesion under CT guidance, leading to this medical procedure being less invasive. However, as the procedure requires the doctor to be positioned near the CT, radiation exposure may be a major concern. To overcome this problem, we developed a remote-controlled robotic system for needle insertion during CT-guided interventional procedures. The current needle holder for the robot is risky in that it might hurt a patient since a needle is always held firmly even when the patient moves. To solve this problem, we designed and fabricated a gripper with variable stiffness through jamming transition. Subsequently, we conducted experiments to investigate the effect of elements constituting the gripper to improve its performance.

scholarly journals Patient Safety in Radiology

2020 ◽  
pp. 309-318
Author(s):  
Mahdieh Montazeran ◽  
Davide Caramella ◽  
Mansoor Fatehi
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Interventional Radiology ◽  
Patient Safety ◽  
Magnetic Resonance ◽  
Ultrasound Imaging ◽  
Interventional Procedures ◽  
Essential Role ◽  
Therapeutic Benefit ◽  
Magnetic Resonance Imaging Mri

AbstractMedical imaging (in short radiology) includes diagnostic and interventional procedures and has an essential role in the diagnosis and treatment of diseases. The objective in this field of medicine is focused on providing diagnostic and therapeutic benefit to the patients along with protecting them from the possible hazards associated with the procedures. By continuously upgrading imaging technologies and improving imaging modalities, such as ultrasound imaging, X-ray-based imaging (radiography, fluoroscopy, and computed tomography), magnetic resonance imaging (MRI), and interventional radiology, safety has become more and more crucial. The potential hazards in radiology for the patients and the staff are multidimensional and will be discussed in the chapter.

Effective dose estimates for cone beam computed tomography in interventional radiology

2013 ◽  
Vol 23 (11) ◽  
pp. 3197-3204 ◽  
Author(s):  
Y. M. Kwok ◽  
F. G. Irani ◽  
K. H. Tay ◽  
C. C. Yang ◽  
C. G. Padre ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Interventional Radiology ◽  
Effective Dose ◽  
Cone Beam Computed Tomography ◽  
Cone Beam

Requesting physicians’ knowledge of X-radiation exposure from computed tomography scan examinations: A case study of two Nigerian tertiary hospitals

2020 ◽  
Vol 3 ◽  
pp. 36-39
Author(s):  
Samson O. Paulinus ◽  
Benjamin E. Udoh ◽  
Bassey E. Archibong ◽  
Akpama E. Egong ◽  
Akwa E. Erim ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Ionizing Radiation ◽  
Ct Scan ◽  
Radiation Exposure ◽  
Work Experience ◽  
Radiation Risk ◽  
Radiological Protection ◽  
X Ray ◽  
Tertiary Hospitals ◽  
Medical Exposure

Objective: Physicians who often request for computed tomography (CT) scan examinations are expected to have sound knowledge of radiation exposure (risks) to patients in line with the basic radiation protection principles according to the International Commission on Radiological Protection (ICRP), the Protection of Persons Undergoing Medical Exposure or Treatment (POPUMET), and the Ionizing Radiation (Medical Exposure) Regulations (IR(ME)R). The aim is to assess the level of requesting physicians’ knowledge of ionizing radiation from CT scan examinations in two Nigerian tertiary hospitals. Materials and Methods: An 18-item-based questionnaire was distributed to 141 practicing medical doctors, excluding radiologists with work experience from 0 to >16 years in two major teaching hospitals in Nigeria with a return rate of 69%, using a voluntary sampling technique. Results: The results showed that 25% of the respondents identified CT thorax, abdomen, and pelvis examination as having the highest radiation risk, while 22% said that it was a conventional chest X-ray. Furthermore, 14% concluded that CT head had the highest risk while 9% gave their answer to be conventional abdominal X-ray. In addition, 17% inferred that magnetic resonance imaging had the highest radiation risk while 11% had no idea. Furthermore, 25.5% of the respondents have had training on ionizing radiation from CT scan examinations while 74.5% had no training. Majority (90%) of the respondents were not aware of the ICRP guidelines for requesting investigations with very little (<3%) or no knowledge (0%) on the POPUMET and the IR(ME)R respectively. Conclusion: There is low level of knowledge of ionizing radiation from CT scan examinations among requesting physicians in the study locations.

Using 100- instead of 120-kVp computed tomography to diagnose pulmonary embolism almost halves the radiation dose with preserved diagnostic quality

2010 ◽  
Vol 51 (3) ◽  
pp. 260-270 ◽  
Author(s):  
Peter Björkdahl ◽  
Ulf Nyman
Keyword(s):  
Computed Tomography ◽  
Pulmonary Embolism ◽  
Image Quality ◽  
Radiation Dose ◽  
Effective Dose ◽  
Ct Number ◽  
Subjective Image Quality ◽  
Diagnostic Quality ◽  
X Ray ◽  
Tube Potential

Background: Concern has been raised regarding the mounting collective radiation doses from computed tomography (CT), increasing the risk of radiation-induced cancers in exposed populations. Purpose: To compare radiation dose and image quality in a chest phantom and in patients for the diagnosis of pulmonary embolism (PE) at 100 and 120 peak kilovoltage (kVp) using 16-multichannel detector computed tomography (MDCT). Material and Methods: A 20-ml syringe containing 12 mg I/ml was scanned in a chest phantom at 100/120 kVp and 25 milliampere seconds (mAs). Consecutive patients underwent 100 kVp ( n = 50) and 120 kVp ( n = 50) 16-MDCT using a “quality reference” effective mAs of 100, 300 mg I/kg, and a 12-s injection duration. Attenuation (CT number), image noise (1 standard deviation), and contrast-to-noise ratio (CNR; fresh clot = 70 HU) of the contrast medium syringe and pulmonary arteries were evaluated on 3-mm-thick slices. Subjective image quality was assessed. Computed tomography dose index (CTDIvol) and dose–length product (DLP) were presented by the CT software, and effective dose was estimated. Results: Mean values in the chest phantom and patients changed as follows when X-ray tube potential decreased from 120 to 100 kVp: attenuation +23% and +40%, noise +38% and +48%, CNR −6% and 0%, and CTDIvol −38% and −40%, respectively. Mean DLP and effective dose in the patients decreased by 42% and 45%, respectively. Subjective image quality was excellent or adequate in 49/48 patients at 100/120 kVp. No patient with a negative CT had any thromboembolism diagnosed during 3-month follow-up. Conclusion: By reducing X-ray tube potential from 120 to 100 kVp, while keeping all other scanning parameters unchanged, the radiation dose to the patient may be almost halved without deterioration of diagnostic quality, which may be of particular benefit in young individuals.

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