CT Scan for Lung Tumors: Biopsy Process and Timeline Explained
Computed Tomography (CT) scan How does your hospital perform biopsy sampling for tumors detected in a lung CT scan, and how many days does it take?
Dr. Wang Yifen Reply:
Radiology response: To determine the appropriate biopsy method, it is essential to assess the location of the tumor in the lung and its relationship with surrounding tissues. The timing for the examination may vary depending on the condition. Please visit the thoracic medicine ou...[Read More] CT Scan for Lung Tumors: Biopsy Process and Timeline Explained
CT Scans for Dental Implants: Safety Concerns for Pregnant Women
CT scans for dental implants in pregnant women? Hello, my wife had a CT scan before her dental implant and later found out she is about one month pregnant. What is the radiation dose from the scan? Did it exceed the limit for pregnant women? Could it affect the baby? What should ...
Dr. Xu Zhongyuan Reply:
According to the study by Cohnen M et al. published in the European Radiology (Eur Radiol. 2002 Mar;12(3):634-7. Epub 2001 Jun 1.), the maximum radiation doses from various types of dental panoramic imaging are as follows (referring to the patient, while the dose to the fetus is ...[Read More] CT Scans for Dental Implants: Safety Concerns for Pregnant Women
Understanding DEXA Scans: Safety, Radiation Exposure, and Health Risks
DEXA (Dual-Energy X-ray Absorptiometry) DEXA (Dual-Energy X-ray Absorptiometry) is a type of imaging test that uses low-dose X-rays to measure bone mineral density and body composition, including fat and lean mass. The radiation energy used in DEXA scans is minimal and considered...
Dr. Yang Jinghua Reply:
Dear Ms. Ginger, The term DEXA refers to Dual Energy X-ray Absorptiometry, which is primarily used for material density analysis. In the medical field, it is utilized for bone density analysis. This type of equipment falls under the regulations for ionizing radiation protection ...[Read More] Understanding DEXA Scans: Safety, Radiation Exposure, and Health Risks
Understanding X-Ray Exposure Risks in Extracorporeal Shock Wave Lithotripsy
Extracorporeal shock wave therapy X-ray issues? My father, who is 67 years old, underwent extracorporeal shock wave lithotripsy due to kidney and urinary tract stones. I heard that this procedure requires continuous X-ray exposure. Will he be exposed to excessive radiation after ...
Dr. Lin Hongyi Reply:
In extracorporeal shock wave lithotripsy (ESWL), fluoroscopy is typically used to locate the position of the stones during the lithotripsy procedure. During the procedure, brief pauses for fluoroscopy may be made for monitoring purposes, and the operator can adjust the timing as ...[Read More] Understanding X-Ray Exposure Risks in Extracorporeal Shock Wave Lithotripsy
Understanding Occupational Injuries in Radiology: Glass Fiber Concerns
Occupational injury What are the bright spots on the X-ray? I was once injured by fiberglass. What equipment can accurately locate the injury? The doctor mentioned it was a problem with the equipment. I also have fiberglass embedded in the sole of my foot, which causes a sharp pa...
Dr. Xu Zhongyuan Reply:
Hello, since I cannot see the X-ray images you mentioned, I am unable to provide a detailed explanation of the significance of the findings. I recommend that you bring the X-ray images and consult a specialist directly. Given that you have had glass fibers embedded in the sole of...[Read More] Understanding Occupational Injuries in Radiology: Glass Fiber Concerns
Understanding CT Scans: Radiation Concerns and Alternatives Explained
Inquire about issues related to CT (Computed Tomography)? Dear Dr. Yang, Recently, I discovered a hard lump in the deeper part of my jaw while touching it. I visited a nearby medical center's ENT department, and after the doctor performed a physical examination, they ordere...
Dr. Yang Jinghua Reply:
Dear Ms. Yuning, Hello. Computed tomography (CT) is one of the modern medical imaging techniques. Due to its rapid examination process and the ability to obtain extensive imaging information, it has become a widely used tool. Depending on different clinical needs and the varying...[Read More] Understanding CT Scans: Radiation Concerns and Alternatives Explained
Understanding the Risks of Standing in Restricted Areas Near X-Ray Machines
Could you please provide more details about the topic related to X-rays? Today, when I went to the emergency room, there was a small red circle outside that said "No Standing" (there were also warnings posted on the door). Inside, next to the X-ray machine, there was a ...
Dr. Wu Bin'an Reply:
Hello! When you go to the emergency department, there is a small circle of red lines outside that says "No Standing" (with warnings posted on the door). Inside, next to the X-ray machine, there is also a bed-like machine with a surrounding red line that has writing on i...[Read More] Understanding the Risks of Standing in Restricted Areas Near X-Ray Machines
The Impact of X-rays on Thyroid Health: Risks and Concerns Explained
The effects of X-rays on the thyroid gland? I would like to ask the doctor: I have had many chest X-rays due to examinations and work-related health checks (approximately more than ten in the past ten years), and I have also undergone about eight abdominal X-rays for kidney imagi...
Dr. Zhang Fudi Reply:
Chest X-rays and abdominal X-rays would need to be performed dozens of times to reach the annual background radiation level that an average person is exposed to. A cardiac nuclear scan does not contain radioactive iodine and does not pose a special risk to the thyroid gland. The ...[Read More] The Impact of X-rays on Thyroid Health: Risks and Concerns Explained
Impact of Repeated CT Scans on Toddler's Brain Development and Health Risks
Repeated CT scans of the brain in young children? My 2-year-and-7-month-old daughter had a car accident in mid-May, where her head hit the ground. She vomited once in the emergency room, and the doctor arranged for a CT scan of her head. She struggled a lot, so she ended up havin...
Dr. Zhang Fudi Reply:
Computed tomography (CT) can provide clearer and more accurate imaging diagnoses compared to traditional X-ray imaging. However, the downside is the higher radiation dose. In the case of your child, obtaining brain imaging requires the use of CT, which can differentiate soft tiss...[Read More] Impact of Repeated CT Scans on Toddler's Brain Development and Health Risks
Understanding the Risks of Multiple Dental X-Rays on Your Health
The harm of full-mouth dental radiography to the human body? Hello Dr. Chang! I recently had a dental issue and underwent a full-mouth X-ray at the clinic. After 4-5 days, I was referred to Taipei Medical University Hospital, where I had another full-mouth X-ray and 2-3 additiona...
Dr. Zhang Fudi Reply:
The path of X-rays travels in a straight line, and if the angle does not directly target the neck, the damage to the thyroid gland is minimal. After undergoing an X-ray, there is no need to consume specific foods or supplements to repair any damage, as there is unlikely to be any...[Read More] Understanding the Risks of Multiple Dental X-Rays on Your Health
CT Scans and Their Impact on Male Fertility: What You Need to Know
Computed Tomography (CT) Scan Dear Dr. Chang, I had a consultation at Kaohsiung Medical University Hospital, where the doctor recommended a CT scan of my abdomen. The hospital has two types of CT scanners: (1) a 16-slice spiral CT scanner and (2) a single-slice spiral CT scanner...
Dr. Zhang Fudi Reply:
Hello Mr. Zhang: The X-ray dose exposure from the abdominal CT scan to the lower body is low, and its impact on sperm is limited. Additionally, the testes regenerate new sperm every 72 to 74 days. If you are concerned, you can consider storing sperm prior to the CT scan, or wait ...[Read More] CT Scans and Their Impact on Male Fertility: What You Need to Know
Understanding Low-Dose CT Scans: Safety and Frequency for Lung Health
Regarding 64-slice low-dose spiral computed tomography (CT)? Hello Dr. Chang: Due to long hours of work-related stress and having a smoking history of fifteen years, along with a family history of cancer, I undergo a health check-up every year. During these check-ups, I also pay ...
Dr. Zhang Fudi Reply:
Hello Mr. Liu: Due to your long history of smoking and a family history of cancer, you belong to a high-risk group for developing cancer. To reduce your cancer risk, the first priority is to quit smoking. Additionally, regular health check-ups can help in early detection and trea...[Read More] Understanding Low-Dose CT Scans: Safety and Frequency for Lung Health
Understanding Aortic Enlargement: Causes, Risks, and Treatment Options
Thoracic aortic dilation? Hello Doctor: I recently had a physical examination, and the chest X-ray report indicated "enlargement of the aorta" and "slight prominence of the aortic root." I am unsure what this condition means and am concerned about its impact o...
Dr. Zhang Fudi Reply:
Hello: Since I have not seen your X-ray images in person, and online hospitals cannot make any diagnoses, I recommend that you visit the pulmonology outpatient department of the hospital for further interpretation and diagnosis of the X-ray, and discuss it with your attending phy...[Read More] Understanding Aortic Enlargement: Causes, Risks, and Treatment Options
Understanding Chest X-Rays for Medical Examinations: What You Need to Know
Chest X-ray for health examination? Hello, I would like to ask about chest X-rays. Recently, I was fortunate enough to pass the railway special examination, and I need to undergo a medical examination at the hospital. One of the tests is a chest X-ray for tuberculosis, with optio...
Dr. Zhang Fudi Reply:
Hello LYL: First of all, congratulations on passing the railway special examination! In fact, the common cold is classified as an upper respiratory tract infection and does not affect the interpretation of chest X-rays. Even if there are some findings, they are not the same as th...[Read More] Understanding Chest X-Rays for Medical Examinations: What You Need to Know
Understanding Radiation Safety in Dental Procedures: Key Questions Answered
Thank you, Dr. Chang, for your response? Thank you, Dr. Chang, for your response. I apologize for having a few more questions to ask you: 1. Regarding the neck protection mentioned in <a href="https://adoctor.tw/article/38085">#38085</a>, is it common prac...
Dr. Zhang Fudi Reply:
Hello John: Since I am not a dentist, I recommend discussing this part with your dentist. However, I believe that appropriate X-rays can assist the dentist in making more accurate medical judgments. If the number of X-rays taken is not excessive, there should generally be no need...[Read More] Understanding Radiation Safety in Dental Procedures: Key Questions Answered
Understanding Dental X-Rays: Risks, Safety, and Alternatives
Regarding dental X-rays? Hello Dr. Chang, I would like to ask you about the recent report regarding a study from the UK that suggests patients who undergo dental X-rays more than ten times have a significantly higher risk of developing thyroid cancer compared to the general pop...
Dr. Zhang Fudi Reply:
Hello John: The thyroid gland is located in the center of the neck, in front of the trachea, and is considered a relatively superficial organ. Additionally, the thyroid is more sensitive to radiation compared to other tissues in the body. If dental treatment requires multiple X-r...[Read More] Understanding Dental X-Rays: Risks, Safety, and Alternatives
Concerns About X-Rays for Young Children: Safety and Radiation Exposure
Concerns About X-rays for Young Children Dear Dr. Chang, I apologize for my deep concerns, which have led to a lengthy message. My child is six years old and had an emergency visit six months ago due to acute asthma. The emergency physician requested an X-ray, so my child underw...
Dr. Zhang Fudi Reply:
Hello Betty: Currently, due to advancements in X-ray technology, the radiation dose from a simple X-ray is very low. The effective equivalent dose for a chest X-ray is only 0.02-0.06 millisieverts, which is extremely low compared to natural background radiation. When taking denta...[Read More] Concerns About X-Rays for Young Children: Safety and Radiation Exposure
Understanding Radiation Exposure: X-Ray Risks and Safety Concerns
Issues related to X-rays? Dr. Chang: Thank you very much for your prompt response; I really appreciate it! However, I still have some questions I would like to ask you. The natural background radiation is about 2.0 millisieverts per year, but a single abdominal X-ray is 0.54 mill...
Dr. Zhang Fudi Reply:
Hello Betty: The fundamental concept of radiation protection is "as low as reasonably achievable" (ALARA), which means that if exposure to X-rays is not necessary, it should be minimized. However, medical needs often dictate the necessity of such exposure based on the p...[Read More] Understanding Radiation Exposure: X-Ray Risks and Safety Concerns
Concerns About Radiation Exposure from I-131 Treatment for Thyroid Issues
The thyroid gland? I apologize for the inconvenience, but I would like to ask a question. I am currently undergoing treatment for hyperthyroidism with radioactive iodine (I-131). My mother was diagnosed with stage II breast cancer five years ago, but her condition is well-control...
Dr. Zhang Fudi Reply:
The oral administration of iodine-131 has minimal impact on those around the patient after absorption by the body. There are no restrictions on contact with others; however, it is still recommended to avoid close proximity to pregnant women, individuals under 18 years of age, and...[Read More] Concerns About Radiation Exposure from I-131 Treatment for Thyroid Issues
Is Cerebral Angiography Safe? Understanding Risks and Side Effects
Cerebral Angiography Hello, doctor. I need to undergo a cerebral angiography. Is it safe? Are there any potential side effects? Thank you.
Dr. Zhang Fudi Reply:
Dear Mr. Wang: Cerebral angiography is an invasive procedure that carries certain risks, including allergic reactions to the contrast agent, which in severe cases can lead to shock; or complications such as vasospasm or thrombosis that may result in a stroke, tissue ischemia, o...[Read More] Is Cerebral Angiography Safe? Understanding Risks and Side 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 |