Understanding CT Scan Radiation: Safety and Accumulation Concerns
Computed Tomography (CT) radiation? Hello, doctor. 1. I would like to ask if the radiation exposure from a CT scan accumulates in the body. I am scheduled for a head CT scan soon (which requires contrast media). 2. I had an abdominal CT scan last October (also with contrast m...
Dr. Wang Yifen Reply:
Hello, radiation is a form of energy that causes exposure during examinations, but it does not accumulate in the human body afterward. It is similar to how sunlight does not accumulate in the body after sun exposure. It is important to be aware of the effects of radiation on the ...[Read More] Understanding CT Scan Radiation: Safety and Accumulation Concerns
Understanding CT Scan Radiation: Safety Concerns and Accumulation Explained
Computed Tomography (CT) Radiation Hello, doctor. 1. I would like to ask if the radiation exposure from a CT scan accumulates in the body. I am scheduled for a head CT scan soon (which requires contrast dye). 2. I had an abdominal CT scan last October (also with contrast dye)...
Dr. Wang Yifen Reply:
Hello, radiation is a form of energy that results in exposure during examinations, but it does not accumulate in the human body after the procedure. This is similar to how sunlight does not accumulate in the body after sun exposure. It is important to be aware of the effects of r...[Read More] Understanding CT Scan Radiation: Safety Concerns and Accumulation Explained
Understanding CT Scan Radiation: Safety Concerns and Accumulation Risks
Computed Tomography (CT) Radiation Hello, doctor. 1. I would like to ask if the radiation exposure from a computed tomography (CT) scan accumulates in the body. I am scheduled to undergo a head CT scan soon (which requires contrast agent). 2. I had an abdominal CT scan last O...
Dr. Wang Yifen Reply:
Hello, radiation is a form of energy that results in exposure during examinations, but it does not accumulate in the human body after the procedure. It is similar to how sunlight does not accumulate in the body after sun exposure. It is important to be aware of the effects of rad...[Read More] Understanding CT Scan Radiation: Safety Concerns and Accumulation Risks
Understanding CT Scan Radiation Exposure and Cancer Risk Concerns
Computed Tomography Radiation Hello, I would like to consult with a physician: I underwent a non-contrast abdominal and pelvic CT scan in the emergency room on October 24 last year, and on March 8 this year, I had a full-body CT scan (from the neck to the pelvis, with contrast). ...
Dr. Wang Yifen Reply:
According to the American Society of Radiologic Technologists, the radiation dose from a single abdominal and pelvic CT scan is approximately 14 millisieverts, while a full-body CT scan has a radiation dose of about 21 millisieverts. The total radiation dose amounts to approximat...[Read More] Understanding CT Scan Radiation Exposure and Cancer Risk Concerns
Understanding CT Scan Radiation Risks and Cancer Concerns
Computed Tomography Radiation I apologize for the concern regarding your mother's recent abdominal CT scan, which included imaging of the chest and the use of contrast agents. Given her family history of breast cancer with two sisters affected, you are understandably worried...
Dr. Wang Yifen Reply:
Hello, breast cancer is the most common cancer among women in our country. The peak incidence occurs in women aged 45-69. The National Health Service provides biennial mammography screenings for women aged 45-69 and for those aged 40-44 with a family history of breast cancer (def...[Read More] Understanding CT Scan Radiation Risks and Cancer Concerns
Is CT Scan Radiation Safe After Multiple X-Rays for Injury?
Computed Tomography Radiation Hello, I previously had a fracture in my foot and underwent several X-rays. Recently, I have been experiencing autonomic nervous system dysfunction, which has led me to consider getting a health check-up. Would the combination of this and a CT scan r...
Dr. Wang Yifen Reply:
Hello, these X-ray examinations involve safe levels of radiation exposure. According to the International Commission on Radiological Protection (ICRP) report 103, doses below 100 millisieverts (including single or multiple exposures) do not cause clinical functional impairment. F...[Read More] Is CT Scan Radiation Safe After Multiple X-Rays for Injury?
Understanding CT Scan Radiation: Risks and Safety for Young Adults
Computed Tomography Radiation Hello Doctor, I would like to inquire about radiation issues related to CT scans. In the past five years, I have undergone three CT scans: a CT scan of the abdomen (with contrast), a CT scan of the oral cavity (with contrast), and a low-dose chest CT...
Dr. Wang Yifen Reply:
Hello, according to the American Society of Radiologic Technologists website, the radiation dose from a single dental computed tomography (CT) scan is approximately 0.2 millisieverts. The reference URL is https://www.xrayrisk.com/calculator/select_study.php?id=64. The radiation d...[Read More] Understanding CT Scan Radiation: Risks and Safety for Young Adults
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?
Concerns About CT Scan Radiation Exposure and Its Health Risks
I am very concerned about the potential harm from radiation exposure during a CT scan? Hello Director Wang, I am a patient from the Taipei Chang Gung Emergency Department on the early morning of March 27. I am just 22 years old and experienced pain in my lower right abdomen that...
Dr. Wang Yifen Reply:
1. The CT images are synthesized by a computer to form the final images. The number of breaths taken during the examination, as well as the scanning area and breath-holding time, varies from person to person. Since your main complaint is right lower abdominal pain, the typical sc...[Read More] Concerns About CT Scan Radiation Exposure and Its Health Risks
Understanding CT Scan Radiation: Managing Anxiety and Health Risks
Computed Tomography Radiation Hello Doctor, I undergo health check-ups every year, with two X-rays each time and an abdominal ultrasound annually. Recently, due to frequent headaches, my doctor ordered a CT scan of my brain, which showed no issues, but an incidental finding of a ...
Dr. Wang Yifen Reply:
The radiation dose from a brain CT scan is approximately 2 millisieverts, while the radiation dose from a lung CT scan is about 7 millisieverts. Ionizing radiation may induce cellular mutations that can lead to cancer, with the probability of occurrence being dose-dependent. Howe...[Read More] Understanding CT Scan Radiation: Managing Anxiety and Health Risks
Is CT Scan Radiation Safe for Young Children? Understanding Risks
Will young children be exposed to excessive radiation when undergoing a CT scan? Hello doctor, my son turned four today. He went to the hospital for an arrangement due to pectus excavatum, and he had an X-ray and a chest CT scan. I only found out afterward that the radiation expo...
Dr. Yang Jinghua Reply:
Dear Xiaoqi's Mom, Thank you for your inquiry. Medical imaging examinations assist clinicians in precise diagnosis and treatment. The amount of ionizing radiation exposure from these diagnostic tests is approximately equivalent to two years of natural background radiation. ...[Read More] Is CT Scan Radiation Safe for Young Children? Understanding Risks