Impact of Multiple CT Scans and X-rays on Radiation Exposure and Health
Hello, I would like to inquire about the effects of multiple computed tomography (CT) scans in a short period of time on the body? Hello Dr. Wang, I have a few questions to ask you. I had a chest X-ray at the beginning of January, a CT scan of the abdomen (with contrast) in mid-F...
Dr. Wang Yifen Reply:
Hello Mr. Zhang, 1. According to the International Commission on Radiological Protection (ICRP) report 103, doses below 100 millisieverts (mSv), whether single or multiple exposures, do not cause clinical functional impairment. The radiation doses from the examinations you ment...[Read More] Impact of Multiple CT Scans and X-rays on Radiation Exposure and Health
Understanding Radiation Concerns: When to Seek Medical Advice
Radiation issues Thank you, doctor, for your prompt response and well wishes. I have another question: Recently, I have been experiencing a tingling sensation in my face, and I am wondering if it could be caused by radiation exposure. Which specialty should I consult for this iss...
Dr. Wang Yifen Reply:
Hello, for facial tingling, it is recommended to consult a family medicine physician or a dermatologist, who can assess the possible causes based on your condition. According to the American College of Radiology, the radiation dose from a full-body CT scan is approximately 21 mil...[Read More] Understanding Radiation Concerns: When to Seek Medical Advice
Understanding Radiation Exposure: Should You Be Concerned?
Radiation issues Thank you for your response, Doctor. I apologize for my health anxiety and overthinking. I don't quite understand what you mean, so should I be concerned about my current radiation exposure of 36.2 millisieverts? What should I be paying attention to? Should ...
Dr. Wang Yifen Reply:
Hello Ms. Pan, the radiation dose is estimated based on data provided by the American Society of Radiologic Technologists at https://www.xrayrisk.com/calculator/calculator-normal-studies.php?id=23, which indicates that the exposure from an abdominal CT scan including the pelvic r...[Read More] Understanding Radiation Exposure: Should You Be Concerned?
Understanding Radiation Exposure: Concerns for Patients with Multiple Imaging Tests
Radiation issues Hello doctor, I am a health anxiety patient. Due to autonomic nervous system dysregulation, I have undergone the following examinations in 2018, 2019, and this year: one head computed tomography (CT), one head magnetic resonance imaging (MRI), approximately 18 ch...
Dr. Wang Yifen Reply:
According to the data from the American Society of Radiologic Technologists, the radiation dose for a 30-year-old female undergoing a head CT scan (1 time) is approximately 2 millisieverts (mSv), for a chest X-ray (about 18 times) it is approximately 1.8 mSv, for a cardiac CT (1 ...[Read More] Understanding Radiation Exposure: Concerns for Patients with Multiple Imaging Tests
Understanding Radiation Risks from Catheter Ablation and CT Scans
Issues Related to Radiation from Catheter Ablation for Arrhythmias 1. Hello Doctor, when I was 19 years old, I underwent catheter ablation for arrhythmia (not 3D mapping). The ablation procedure lasted about two and a half hours. I'm concerned about the radiation exposure an...
Dr. Wang Yifen Reply:
Hello, 1. According to the data from the American Society of Radiologic Technologists, the radiation dose for a 19-year-old male undergoing a single cardiac catheterization with ablation is approximately 15 millisieverts, with an additional cancer risk of about 0.2%. The Intern...[Read More] Understanding Radiation Risks from Catheter Ablation and CT Scans
Understanding Radiation Exposure: Addressing Patient Concerns in Imaging
Radiation Issues Thank you for your response, Doctor. I have been experiencing health anxiety along with autonomic nervous system dysregulation, and I have visited outpatient clinics multiple times over the past three years. In 2018 and 2019, I underwent the following examination...
Dr. Wang Yifen Reply:
Hello Ms. Pan, according to the information from the American Society of Radiologic Technologists, the radiation dose from three chest X-rays (anterior-posterior and lateral views) for a 30-year-old female is approximately 0.3 millisieverts, while a cardiac CT scan (one time) has...[Read More] Understanding Radiation Exposure: Addressing Patient Concerns in Imaging
Understanding X-Ray Exposure: Safety Concerns and Frequency Guidelines
X-ray dosage Hello Doctor, I am concerned about the radiation exposure from X-rays. Since the car accident on November 22, 2019, I have undergone a CT scan of my head once (on November 22) and five X-rays of my clavicle (approximately every 3-4 weeks). I had an X-ray of my clavi...
Dr. Wang Yifen Reply:
Hello Mr. Li, 1. X-rays are diagnostic tools used to monitor changes in diseases. When a physician assesses the patient's condition and determines the need, an X-ray examination can be arranged. The tests you mentioned are considered reasonable. 2. Regarding the question ...[Read More] Understanding X-Ray Exposure: Safety Concerns and Frequency Guidelines
Concerns About Radiation Exposure and Weight Loss: What You Need to Know
Radiation Issues Hello Doctor, due to autonomic nervous system dysfunction, I underwent the following examinations in 2018 and 2019: head CT scan, head MRI, chest X-rays (about 10 times), abdominal CT scan, neck ultrasound, echocardiogram, breast ultrasound, gastroscopy, abdomina...
Dr. Wang Yifen Reply:
Hello: According to the information from the American Society of Radiologic Technologists, the radiation dose for a head CT scan is approximately 2 millisieverts (mSv), 10 chest X-rays (both frontal and lateral views) is about 1 mSv, an abdominal CT scan is around 8 mSv, and an a...[Read More] Concerns About Radiation Exposure and Weight Loss: What You Need to Know
Understanding Radiation Exposure from X-rays and CT Scans
Radiation Issues I visited the orthopedic department due to groin pain and a suspected mass. I had four X-ray images of the hip and pelvis taken, and after the physician reviewed them, he determined that it was not a bone issue and referred me to the surgical department. The surg...
Dr. Wang Yifen Reply:
Hello: According to information from the American Society of Radiologic Technologists, the radiation dose from four pelvic X-rays is approximately 2.4 millisieverts, while the radiation dose from a CT scan of the abdomen and pelvis is about 14 millisieverts. The total radiation d...[Read More] Understanding Radiation Exposure from X-rays and CT Scans
Understanding X-Ray Radiation Risks in Children: What Parents Should Know
Childhood X-ray radiation concerns? Hello Dr. Yeh, 1. When my child was nearly 1 year old, he was diagnosed with laryngomalacia, and the doctor recommended a "neck and head X-ray." Initially, the father held the baby for the X-ray, but the baby was scared and cried con...
Dr. Ye Weicheng Reply:
When performing X-ray imaging of the head and neck in infants and young children, radiologic technologists generally reduce the radiation dose significantly due to the incomplete development of their tissues. Of course, advancements in technology have led to the incorporation of ...[Read More] Understanding X-Ray Radiation Risks in Children: What Parents Should Know
Radiation Exposure Risks from CT Scans in Young Children: What Parents Should Know
Radiation from CT scans in 5-year-old children? Dear Dr. Wang, My child is 5 years old. Earlier this year, he had an X-ray of his arm at a clinic, where he was not wearing a lead apron and other body parts were not shielded. I would like to know if full exposure to X-rays could ...
Dr. Wang Yifen Reply:
Hello, currently the estimation of X-ray risks is calculated based on adults. For children, since their organs are still developing and their lifespan is much longer, the risk of radiation-induced cancer may not be accurate, and therefore no data is available for reference. Howev...[Read More] Radiation Exposure Risks from CT Scans in Young Children: What Parents Should Know
Understanding the Risks of Multiple X-Rays: Health Impacts and Concerns
The harm of X-rays? How much harm does it cause to the body to have two X-rays within six months? In March 2012, due to an additional nerve conduction line in the heart, I underwent catheter ablation. What was the approximate radiation dose for that procedure? In August of the sa...
Dr. Zhang Zheng'ang Reply:
Hello, the radiation dose from catheter ablation is approximately 15 millisieverts per procedure. The radiation dose from a CT scan of the head and neck varies depending on the scan area, the number of scans (if contrast is injected, it typically requires two scans), and the type...[Read More] Understanding the Risks of Multiple X-Rays: Health Impacts and Concerns
Understanding Radiation Exposure: Risks and Measurements in Medical Procedures
Radiation dose The radiation dose from cardiac catheterization with ablation in 2012 varies based on the specific procedure and equipment used, but it typically ranges from 5 to 30 millisieverts (mSv). The radiation dose for a neck and head CT scan in the same year is generally a...
Dr. Ye Weicheng Reply:
Ans1: Cardiac catheterization is a procedure that involves fluoroscopic imaging, and the radiation dose does not have a fixed value; it depends on the duration of radiation exposure at the time. Typically, the dose ranges from 7 to 15 millisieverts, but if the physician's pr...[Read More] Understanding Radiation Exposure: Risks and Measurements in Medical Procedures
Understanding Radiation Exposure from CT Scans and Heart Procedures
Dose of Computed Tomography for Head and Neck Hello doctor, I underwent cardiac catheter ablation for the cardiac conduction pathways in March 2012, which lasted approximately 6 hours. In July of the same year, I had a CT scan of the head and neck. Could you please tell me the ra...
Dr. Wang Yifen Reply:
Hello, according to the information from the American Society of Radiologic Technologists, the radiation dose from a single cardiac catheter ablation is approximately 15 millisieverts, while a single CT scan of the head and neck has a radiation dose of about 6 millisieverts, tota...[Read More] Understanding Radiation Exposure from CT Scans and Heart Procedures
Concerns About Radiation from Multiple Full Mouth X-rays and 3D CT Scans
Concerns regarding full-mouth X-rays and 3D full-mouth computed tomography (CT)? Hello, doctor. I have had two full-mouth X-rays and two out-of-pocket 3D cone beam computed tomography scans within three days. Should I be concerned about radiation exposure? Thank you for your resp...
Dr. Wang Yifen Reply:
Hello, according to the American Society of Radiologic Technologists, the radiation dose from two full-mouth X-rays is approximately 0.02 millisieverts, while the dose from two full-mouth CT scans is about 0.4 millisieverts, totaling approximately 0.42 millisieverts. The Internat...[Read More] Concerns About Radiation from Multiple Full Mouth X-rays and 3D CT Scans
Assessing Radiation Exposure from Recent Medical Imaging Procedures
Radiation issues During a health check-up, a shadow was found in the lungs. In mid-February, follow-up X-rays (both frontal and lateral views) were taken, along with a non-contrast CT scan of the lungs (which took about 20 to 30 minutes). At the end of February, a contrast-enhanc...
Dr. Wang Yifen Reply:
1. According to the American Society of Radiologic Technologists, the radiation dose from a frontal and lateral X-ray is approximately 0.1 millisieverts, while two chest CT scans can amount to about 14 millisieverts, a full-body PET scan delivers around 14.1 millisieverts, and an...[Read More] Assessing Radiation Exposure from Recent Medical Imaging Procedures
Understanding Radiation Risks from Frequent CT Scans: What You Need to Know
Radiation Issues with Computed Tomography (CT) Scans Hello, Doctor. In September 2018, I was diagnosed with a salivary gland tumor, and I underwent a CT scan of the head and neck with contrast, as well as a chest X-ray, in preparation for surgery. Later, in December 2018, another...
Dr. Ye Weicheng Reply:
The harmful effects of ionizing radiation on human health are divided into deterministic effects and stochastic effects. Deterministic effects refer to harmful tissue responses resulting from exposure to excessive radiation; as the dose increases, the severity of the damage also ...[Read More] Understanding Radiation Risks from Frequent CT Scans: What You Need to Know
Is Your CT Scan Radiation Exposure Exceeding Safe Limits?
Computed Tomography Radiation Hello, doctor. In September 2018, I was diagnosed with a salivary gland tumor and underwent a CT scan of the head and neck with contrast, as well as a chest X-ray, in preparation for surgery. On December 31, 2018, I had another CT scan of the head an...
Dr. Wang Yifen Reply:
Hello, according to the information from the American Society of Radiologic Technologists, the radiation dose for a single CT scan of the head and neck is approximately 8 millisieverts, and the total dose for three scans is about 24 millisieverts. A single chest X-ray (both front...[Read More] Is Your CT Scan Radiation Exposure Exceeding Safe Limits?
Differences Between MSCT and LDCT for Lung Health Screening
The difference between MSCT (Multi-Slice Computed Tomography) and LDCT (Low-Dose Computed Tomography)? Hello Dr. Wang, I hope you don't mind me asking. My wife is considering undergoing a health check-up, and the hospital's equipment for the low-dose lung CT scan is adv...
Dr. Wang Yifen Reply:
Hello, MSCT stands for multi-slice computed tomography, while LDCT stands for low-dose computed tomography. MSCT refers to the type of machine, with models available ranging from 4-slice to 640-slice computed tomography. LDCT indicates that the examination is conducted using a lo...[Read More] Differences Between MSCT and LDCT for Lung Health Screening
Understanding Radiation Risks from Chest CT Scans and Cancer Concerns
Chest Computed Tomography Radiation Hello, I had a low-dose chest CT scan during my health check-up in early May this year due to a lung nodule. My doctor has scheduled another chest CT scan with contrast for follow-up at the end of December, which will not be low-dose. Additiona...
Dr. Wang Yifen Reply:
Hello, 1. According to the data from the American Society of Radiologic Technologists, the risk of developing additional cancer from a single low-dose chest CT scan is 0.010114%, while the risk from a standard chest CT scan is 0.035398%. The combined radiation dose from both sc...[Read More] Understanding Radiation Risks from Chest CT Scans and Cancer Concerns