Does Abdominal CT Scan Affect Male Fertility? Concerns and Insights
Will an abdominal CT scan cause male infertility? Hello doctor, I recently underwent a non-contrast abdominal CT scan due to some examination factors. The scan included the area around the testes, and I am planning to conceive a child. I am concerned about any potential adverse e...
Dr. Wang Yifen reply Radiology
Hello, a single abdominal CT scan has a radiation dose of approximately 8 millisieverts. According to the International Commission on Radiological Protection (ICRP) report 103, doses below 100 millisieverts (including single or multiple exposures) do not cause clinically signific...[Read More] Does Abdominal CT Scan Affect Male Fertility? Concerns and Insights
Understanding the Differences Between Low-Dose and Standard CT Scans
The difference between low-dose and standard computed tomography (CT) scans? Director, I have undergone an abdominal CT scan in May 2019 and a brain CT scan in May 2020 due to symptoms and examination needs. I am scheduled to have a routine chest CT scan in February 2021, and I h...
Dr. Wang Yifen reply Radiology
Hello, 1. According to the Radiological Society of Taiwan's educational information from March 20, 2019, titled "Do I need to undergo low-dose chest computed tomography (CT)?" the following information is provided regarding "Who needs to undergo low-dose che...[Read More] Understanding the Differences Between Low-Dose and Standard CT Scans
Does Radiation Exposure Affect Egg Quality for IVF?
Does radiation exposure affect egg quality? I underwent abdominal, chest, and lumbar X-rays once each in August this year during a health check-up. From September to December, I had full mouth X-rays three times and single tooth X-rays four times at the dental clinic. Due to susp...
Dr. Wang Yifen reply Radiology
Hello, in most cases, the reasons affecting ovarian reserve are unclear, with aging being the primary factor related to reproductive age. Other factors that may influence ovarian reserve include smoking, lifestyle habits, medical history, previous ovarian surgeries, systemic chem...[Read More] Does Radiation Exposure Affect Egg Quality for IVF?
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 Radiology
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
Understanding Radiation Exposure: Concerns After Medical Imaging Procedures
Questions about radiation exposure? Hello Doctor: I would like to ask you a few questions that have been troubling me for a long time and causing me concern. I appreciate your clarification on the following situations: In mid-July, I underwent coronary angiography (with contras...
Dr. Wang Yifen reply Radiology
Hello, according to the International Commission on Radiological Protection (ICRP) report 103, doses below 100 millisieverts (including single or multiple exposures) do not cause clinically significant functional impairment. The radiation examinations you mentioned will not excee...[Read More] Understanding Radiation Exposure: Concerns After Medical Imaging Procedures
Understanding Abdominal CT Scans: What They Reveal Beyond the Small Intestine
Abdominal Computed Tomography (CT) Scan Hello Doctor, I underwent an abdominal CT scan in September this year to examine my small intestine. I initially thought that the abdominal CT scan was solely for checking the small intestine. Recently, due to anxiety, I have developed some...
Dr. Wang Yifen reply Radiology
Hello, computed tomography (CT) is an imaging technique that utilizes an X-ray tube rotating around the body, capturing data as X-rays penetrate the body. This data is then reconstructed by a computer to produce detailed structural images of the examined area. It is a painless an...[Read More] Understanding Abdominal CT Scans: What They Reveal Beyond the Small Intestine
Understanding CT Contrast Agent Side Effects and Their Duration
Side effects of contrast agents used in computed tomography (CT) scans? Hello Doctor: This year, during my company's health check-up, an abdominal ultrasound suggested a possible liver nodule or cyst (0.8 cm). I consulted a gastroenterologist at the hospital, who recommended...
Dr. Wang Yifen reply Radiology
Hello, the adverse reactions associated with iodine-based contrast agents can be classified by the timing of their occurrence: 1. Acute systemic adverse reactions: These occur within 1 hour after the administration of the contrast agent. 2. Late systemic adverse reactions: These ...[Read More] Understanding CT Contrast Agent Side Effects and Their Duration
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 Radiology
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 Radiology
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 Radiology
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
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 Radiology
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 Radiology
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 Radiology
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 Radiology
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 Radiology
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 Radiology
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 Radiology
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 Radiology
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 Radiology
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 Radiology
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