Do Cell Phones and Wireless Earbuds Increase Brain Tumor Risk?
Regarding mobile phones? Doctor, I am a 17-year-old male, and I am recently very concerned about brain tumors. Does using a mobile phone and wireless earbuds increase the risk of cancer?
Dr. Wang Yifen Reply:
Hello, mobile phones have gradually become a common communication device since 1990. Whether they affect human health and increase the risk of cancer currently lacks a definitive conclusion. The following information about mobile phones comes from the American Cancer Society webs...[Read More] Do Cell Phones and Wireless Earbuds Increase Brain Tumor Risk?
Understanding Safe Radiation Exposure Limits for Medical Imaging
The acceptable amount of radiation exposure from diagnostic imaging procedures in one year? Due to my autoimmune disease, I have experienced various health issues this year. Since April, I have undergone numerous imaging studies, including several abdominal and cervical spine X-r...
Dr. Wang Yifen Reply:
Hello, MRI is a radiation-free examination. Additionally, according to the International Commission on Radiological Protection (ICRP) report 103, a dose below 100 millisieverts (including single or multiple exposures) does not cause clinical functional impairment. Following your ...[Read More] Understanding Safe Radiation Exposure Limits for Medical Imaging
Concerns About Radiation Exposure: Understanding Your X-Ray and CT Scan Risks
Concern about excessive radiation exposure? Hello Dr. Wang, I would like to ask you a question. In March of this year, I had a chest X-ray, and on October 8, I had an abdominal X-ray in the emergency department. On October 19, I underwent a chest CT scan (CT of the thorax) at my...
Dr. Wang Yifen Reply:
Hello, the following is an explanation by Committee Member Liao Yan-Peng of the Public Affairs Committee of the Radiological Society of the Republic of China regarding the regulations on annual radiation dose limits: 1. Why is the annual dose limit for "the general public&q...[Read More] Concerns About Radiation Exposure: Understanding Your X-Ray and CT Scan Risks
Understanding the Impact of Accidental X-Ray Exposure in Radiology
X-ray radiation issues? Hello, Doctor: I am a student in the radiology department. Yesterday, while I was checking if the lead door was securely closed, my classmate accidentally pressed the exposure button, which seemed to activate the imaging. The machine displayed mas 250 and ...
Dr. Ye Weicheng Reply:
Hello, Liu Xiaodi: Regarding the issue you raised, it should not be a major concern. According to the regulations of the Atomic Energy Commission, X-ray machines and lead doors must have an interlock system. This means that the X-ray machine cannot be activated when the lead door...[Read More] Understanding the Impact of Accidental X-Ray Exposure in Radiology
Impact of Accidental X-Ray Exposure in Radiology Practice
Incorrect X-ray dosage? Hello, doctor. I would like to ask a question. I am a radiology student, and while we were practicing with the X-ray machine at school, I was in the room with the X-ray machine. I was unsure if the lead door was closed properly, and my classmate accidental...
Dr. Wang Yifen Reply:
Hello, the various tissues and organs in the human body are composed of numerous cells. When exposed to a significant amount of radiation, cells may exhibit the following damage responses: 1. Low-dose radiation may not affect cellular metabolism or delay its normal cycle, and aft...[Read More] Impact of Accidental X-Ray Exposure in Radiology Practice
Understanding Cumulative Radiation Exposure from X-Ray Operations
The issue of radiation exposure? Hello, doctor. I work as a technician operating X-ray machines, analyzing the components of the parts, also known as X-ray. I operate the machine daily, and I would like to ask if, although it is low-dose radiation, there could be an accumulation ...
Dr. Wang Yifen Reply:
Hello, in Taiwan, operations involving ionizing radiation must comply with the "Ionizing Radiation Protection Act," which aims to reasonably minimize radiation exposure to protect health and safety. The competent authority is the Atomic Energy Council of the Executive Y...[Read More] Understanding Cumulative Radiation Exposure from X-Ray Operations
Is Frequent CT Scanning Safe? Understanding Radiation Risks
Three CT scans were performed within three months? I had a contrast-enhanced chest CT in early June, followed by an abdominal CT at the end of September. Five days later, I had another contrast-enhanced chest CT. Could this exposure to radiation be too high and have an impact on ...
Dr. Wang Yifen Reply:
Hello, following your doctor's instructions to undergo radiation-related examinations is based on the consideration that the health benefits outweigh the effects of radiation. If you have any concerns, it is advisable to communicate further with your physician before proceed...[Read More] Is Frequent CT Scanning Safe? Understanding Radiation Risks
Assessing the Risks of Frequent CT Scans in Elderly Patients
Short-term repeated computed tomography (CT) scans? My father, who is 85 years old, underwent abdominal computed tomography (CT) scans with contrast on March 108 and January 109 due to bowel obstruction. In August 109, he had another abdominal CT scan for a liver abscess and subs...
Dr. Wang Yifen Reply:
Hello, following your doctor's instructions to undergo radiation-related examinations is based on the consideration that the health benefits outweigh the effects of radiation. If you have any concerns, it is advisable to communicate further with your physician before proceed...[Read More] Assessing the Risks of Frequent CT Scans in Elderly Patients
Concerns About Radiation Exposure from X-rays in Young Children
I took two X-rays of my hip joints to check for internal rotation issues and I'm concerned about radiation exposure? Hello, doctor. My 2-year-old child has a slight inward walking pattern that sometimes appears and sometimes does not. We visited the orthopedic department at ...
Dr. Wang Yifen Reply:
On April 2, 2019, the American Association of Physicists in Medicine (AAPM) issued a position statement recommending the cessation of the use of patient gonadal and fetal shielding in routine X-ray diagnostic imaging. This is due to the potential for such shielding to obscure org...[Read More] Concerns About Radiation Exposure from X-rays in Young Children
Understanding Radiation Exposure from X-rays and CT Scans for Ankle Injuries
Radiation issues Hello Dr. Wang, I sprained my ankle at the end of August. On September 5th, I went to the hospital for an X-ray of my left ankle (one frontal and one lateral view). The doctor suspected a fracture from the X-ray and ordered a CT scan of my left foot, which confir...
Dr. Wang Yifen Reply:
Hello, 1. According to the American Society of Radiologic Technologists, the radiation dose for a single examination of the extremities is approximately 0.001 millisieverts, while the radiation dose for a full-body CT scan is about 21 millisieverts. The International Commission...[Read More] Understanding Radiation Exposure from X-rays and CT Scans for Ankle Injuries
Understanding PET Scans: Guidelines for Patients on Medications
Positron Emission Tomography (PET) Metabolism Department: Metformin HCl 850mg Psychiatry: At bedtime: LYRICA (pregabalin) 75mg * 2 tablets, Zoloft (sertraline) 50mg * 2 tablets, Mirtazapine 50mg * 2 tablets, Seroquel (quetiapine) 50mg * 1 tablet, Zolpidem 10mg * 2 tablets, Flun...
Dr. Wang Yifen Reply:
Hello, Dr. Hou Po-Nian, the attending physician of the Nuclear Medicine Department at Changbin Show Chwan Memorial Hospital, responded: 1. You need to fast for 8 hours prior to the examination. Diabetes medications can be taken as usual the day before the test, but should be st...[Read More] Understanding PET Scans: Guidelines for Patients on Medications
CT Brain Scan: Safety Guidelines for Diabetic Patients on Metformin
CT brain scan I have a history of type 2 diabetes for 8 years, and my kidney function tests are currently normal. I need to undergo a CT scan of the brain with non-ionic contrast agent. 1. I am taking Metformin HCl 850 mg and Lyrica (pregabalin) 75 mg twice a day. How many days o...
Dr. Wang Yifen Reply:
Hello, 1. Recently, international trends have relaxed the usage guidelines for Metformin. The latest contrast agent manual from the American College of Radiology and the contrast guidelines from the European Urological Association suggest that intravenous iodinated contrast age...[Read More] CT Brain Scan: Safety Guidelines for Diabetic Patients on Metformin
Concerns About Multiple X-Ray Exposures in Young Children
Multiple radiographic examinations within a short period? Hello Doctor, my son is six years old. Since January, he has undergone various X-ray and CT scans for different reasons. 1. He had chest X-rays in January and February (suspected pneumonia). 2. In March, he had about three...
Dr. Wang Yifen Reply:
Hello, 1. Multiple exposures to radiation can indeed increase the risk of developing additional cancers. The purpose of imaging examinations is to assist physicians in diagnosing and identifying the underlying causes of diseases, enabling appropriate interventions so that patie...[Read More] Concerns About Multiple X-Ray Exposures in Young Children
Understanding Radiation Risks from Multiple CT Scans: What You Need to Know
Computed Tomography Radiation Hello, doctor. Recently, an abdominal ultrasound detected a shadow on my liver, so the doctor arranged for an abdominal CT scan (without contrast). A week later, upon reviewing the report, it was unexpectedly found that there seems to be a shadow on ...
Dr. Wang Yifen Reply:
According to the American Society of Radiologic Technologists, each additional abdominal and pelvic computed tomography (CT) scan increases the risk of developing an additional cancer by approximately 1.2 per 1,000 scans. The purpose of imaging examinations is to assist physician...[Read More] Understanding Radiation Risks from Multiple CT Scans: What You Need to Know
Understanding the Impact of X-rays and MRI on Your Health
I underwent an X-ray due to discomfort in my chest, neck, and lower back? I had a lateral and oblique X-ray of the neck, approximately four chest X-rays, about two lateral X-rays of the lumbar region, totaling eight X-rays, along with an MRI of the brain. I would like to know if ...
Dr. Wang Yifen Reply:
Hello, the examinations you mentioned are reasonable and safe. The purpose of imaging studies is to assist physicians in diagnosing and identifying the underlying causes of illness, so that appropriate interventions can be made to help patients recover their health as soon as pos...[Read More] Understanding the Impact of X-rays and MRI on Your Health
Understanding Radiation Exposure from Lumbar and Thoracic X-rays
Radiation Concerns with Lumbar Spine X-rays Hello, doctor. I would like to ask about the lumbar spine X-ray. Is the 1.5 millisieverts the total for both the frontal and lateral views combined, or is it 1.5 for just one view? I found some sources stating that it could be 1.5 for o...
Dr. Wang Yifen Reply:
Hello, the American Society of Radiologic Technologists states that the radiation dose for a chest X-ray (both frontal and lateral views) is approximately 0.1 millisieverts. The radiation dose for the upper back is about 1 millisievert, while for the lower back it is approximatel...[Read More] Understanding Radiation Exposure from Lumbar and Thoracic X-rays
Understanding the Risks of Abdominal CT vs. IVP for Fertility
Abdominal CT (Computed Tomography) Doctor, I had a urinalysis that showed occult blood, so I went to the urology department for further examination. I underwent kidney and bladder ultrasound and abdominal X-ray, but no abnormalities were found. I initially wanted the doctor to ar...
Dr. Wang Yifen Reply:
Hello: According to the data from the American Radiologic Technologists website, the radiation dose from a single abdominal CT scan is approximately 8 millisieverts, while the radiation dose from intravenous pyelography (IVP) is about 3 millisieverts. The International Commission...[Read More] Understanding the Risks of Abdominal CT vs. IVP for Fertility
Understanding CT Scans: Radiation Risks and Interpretation Guidelines
Computed Tomography (CT) Scan Recently, I underwent an abdominal CT scan and multiple X-ray examinations due to my medical condition. I am also planning to have a health check-up soon, which includes a lung CT scan. I would like to ask the director: 1. Is it safe to have more tha...
Dr. Wang Yifen Reply:
Hello, 1. According to the American Society of Radiologic Technologists, the radiation dose for a single CT scan of the abdomen (including the pelvic cavity) is approximately 14 millisieverts. The International Commission on Radiological Protection (ICRP) report 103 states that...[Read More] Understanding CT Scans: Radiation Risks and Interpretation Guidelines
Understanding Pain After TMJ MRI Contrast Injection: Is It Normal?
TMJ MRI contrast agent Hello, doctor. Recently, I went to the hospital for an examination due to temporomandibular joint (TMJ) dysfunction. It has been four days, and the area where the contrast agent was injected still hurts, especially when I open my mouth. Is this normal? I ha...
Dr. Wang Yifen Reply:
Hello, based on your description, if you experience persistent pain at the injection site after the examination and there is no improvement, it is recommended to return to the original hospital for evaluation. A physician should perform a physical examination or discuss the exami...[Read More] Understanding Pain After TMJ MRI Contrast Injection: Is It Normal?
Can You Get a Chest X-Ray with Metal Braces? Understanding the Risks and Effects
Taking a chest X-ray with metal dental braces? Can I have a chest X-ray while wearing metal braces? I am reminded to remove metal jewelry every time I have an X-ray, which makes me feel like wearing metal jewelry poses a life-threatening risk. However, it seems like the concern i...
Dr. Wang Yifen Reply:
Hello, any removable metallic foreign objects within the X-ray exposure area should be removed in advance to avoid interference with the imaging and affecting the physician's diagnosis. X-rays are a form of ionizing radiation, and only excessive exposure poses risks. The rad...[Read More] Can You Get a Chest X-Ray with Metal Braces? Understanding the Risks and Effects
Radiology FAQ
| Contrast Agent | Ct Scan |
| Ct Scan Radiation | Magnetic Resonance Imaging |
| Mri | Mri Report |
| Radiation | Radiological Examination |
| X-Ray | X-Ray Examination |
| X-Ray Radiation |