Is X-Ray Radiation Safe for a 2-Year-Old Child with Scoliosis?
What are the concerns regarding X-ray exposure in two-year-old children? Because the child is suspected of having scoliosis, they underwent an X-ray examination at the hospital. Currently, I checked the National Health Insurance Quick Access System, and the medical order code is:...
Dr. Wang Yifen Reply:
Hello, children's body sizes are smaller than adults, and the radiation dose they receive is lower than the average adult's radiation dose. A single X-ray examination for scoliosis does not pose significant harm to the body; however, due to children's sensitivity t...[Read More] Is X-Ray Radiation Safe for a 2-Year-Old Child with Scoliosis?
Understanding Radiation Risks: Are CT Scans and X-rays Overused?
Radiological examination Hello, doctor. About a year ago, I went to the hospital outpatient department due to severe lower back pain and urinary discomfort. After an ultrasound, the doctor found some cysts on my left kidney and, for safety reasons, arranged for a CT scan of the k...
Dr. Wang Yifen Reply:
Hello, abdominal computed tomography (CT) plays a crucial role in the diagnosis of acute abdominal pain. Certain conditions necessitate the assessment of intra-abdominal diseases to determine the need for surgical intervention. Physicians evaluate clinical symptoms to decide whet...[Read More] Understanding Radiation Risks: Are CT Scans and X-rays Overused?
Are Chest X-Rays Safe for Newborns Under 10 Days Old?
Is there any adverse effect on a newborn less than 10 days old who underwent a chest X-ray (DR examination) in the hospital? Anxiety? Hello Doctor, my baby is less than 10 days old and had a chest X-ray (DR examination) in the hospital. Will this have any adverse effects? I'...
Dr. Zhang Zheng'ang Reply:
Hello, Xiao Xie: There is no evidence to suggest any adverse effects.[Read More] Are Chest X-Rays Safe for Newborns Under 10 Days Old?
Understanding MRI and MRCP: Key Differences and Diagnostic Insights
Questions about MRI and MRCP? Does an MRI also include MRCP? If a full-body MRI report shows no issues, can MRCP further detect any lesions? Thank you!
Dr. Wang Yifen Reply:
Hello, MRCP stands for Magnetic Resonance Cholangiopancreatography. It is a non-invasive imaging technique, also known as cholangiopancreatic magnetic resonance imaging. This procedure is part of MRI examinations and utilizes an abdominal radiofrequency coil. Diseases related to ...[Read More] Understanding MRI and MRCP: Key Differences and Diagnostic Insights
CT Scans with BARD PowerPort: Safety and Guidelines for Contrast Injection
Computed Tomography - BARD PowerPort Hello Dr. Wang, I would like to inquire about the use of a BARD PowerPort during a computed tomography (CT) scan when injecting contrast agents. The patient guide provided states that high-pressure injection of contrast agents is permissible w...
Dr. Wang Yifen Reply:
Hello, 1. According to Ms. Wang, a sales representative from BD Company, the POWERPORT implanted injection port can be used in conjunction with the SAFESTEP (safety non-coring needle) for percutaneous access to the port for treatments such as chemotherapy and drug infusion. If ...[Read More] CT Scans with BARD PowerPort: Safety and Guidelines for Contrast Injection
Can CT Scans Detect Tumors in the Retro-Duodenal Area?
There is a long tumor at the posterior end of the duodenum? I would like to ask if, in addition to enteroscopy, a CT scan can help determine the presence of a tumor at the posterior part of the duodenum?
Dr. Wang Yifen Reply:
Hello, a computed tomography (CT) scan may not necessarily reveal the presence of a tumor at the posterior end of the duodenum. CT is a non-invasive imaging technique, and its diagnostic accuracy can be influenced by the nature of the lesion (location, size, tumor characteristics...[Read More] Can CT Scans Detect Tumors in the Retro-Duodenal Area?
Can CT Scans Detect Tumors in the Duodenum?
There is a long tumor at the posterior end of the duodenum? I would like to ask if, in addition to enteroscopy, a CT scan can help determine the presence of a tumor at the posterior end of the duodenum?
Dr. Wang Yifen Reply:
Hello, a computed tomography (CT) scan may not necessarily reveal whether there is a tumor at the posterior end of the duodenum. CT is a non-invasive examination, and its diagnostic accuracy can be influenced by the nature of the lesion (location, size, tumor characteristics), th...[Read More] Can CT Scans Detect Tumors in the Duodenum?
Radiation Dose for Ear X-Ray: Assessing Foreign Objects
X-ray dosage for the ear canal? The radiation dose from an X-ray to check for foreign objects in the ear is generally very low, typically measured in microsieverts (µSv). A standard X-ray of the ear may expose a patient to approximately 0.1 to 0.5 µSv. For comparison, a single ch...
Dr. Zhang Zheng'ang Reply:
Hello JJ: The radiation dose of one skull X-ray is 0.1 millisieverts (approximately equivalent to the radiation dose from two chest X-rays).[Read More] Radiation Dose for Ear X-Ray: Assessing Foreign Objects
Understanding CT Scans for Abdominal Discomfort: What You Need to Know
Questions about Computed Tomography (CT) Scans? I would like to ask about my discomfort in the upper right abdomen that has persisted for the past couple of months. I have undergone ultrasound, gastroscopy, and colonoscopy, and aside from gastroesophageal reflux and mild gastriti...
Dr. Wang Yifen Reply:
Hello, when arranging advanced imaging health examinations, it is recommended to consider the patient's medical history and the purpose of the examination. For lung cancer screening, the best method currently is low-dose computed tomography (LDCT) of the lungs. For the gastr...[Read More] Understanding CT Scans for Abdominal Discomfort: What You Need to Know
Understanding Radiation Dose for Ear Canal X-Rays in ENT
X-ray dosage for the ear canal? I would like to ask about the approximate radiation dose for an ear canal X-ray in an otolaryngology department.
Dr. Zhang Zheng'ang Reply:
Hello, the radiation dose of one skull X-ray is 0.1 millisieverts (approximately equivalent to the radiation dose of two chest X-rays).[Read More] Understanding Radiation Dose for Ear Canal X-Rays in ENT
Radiation Therapy Concerns for Pregnant Caregivers: Safety Guidelines
Radiation Issues Hello, Doctor: Currently, an elder in my family needs to undergo radiation therapy (radiotherapy), but only my pregnant wife, who is about four months along, can accompany them. I would like to inquire about the following issues regarding a pregnant woman accompa...
Dr. Wang Yifen Reply:
Hello, radiation exposure occurs only in the "treatment" phase within the radiation therapy room. When the machine is not in operation, there is no residual radiation. If the equipment complies with the radiation equipment usage regulations set by the Atomic Energy Coun...[Read More] Radiation Therapy Concerns for Pregnant Caregivers: Safety Guidelines
Managing Pregnancy After Low-Dose Lung CT: Health and Fertility Tips
Low-Dose Computed Tomography of the Lungs and Pregnancy A young woman underwent a low-dose computed tomography (CT) scan of the lungs before marriage and discovered a nodule. The doctor recommended low-dose follow-up scans every six months. How should she manage the issues relate...
Dr. Wang Yifen Reply:
Hello, if you are pregnant, please discuss the necessity of the X-ray examination with your physician before the procedure, evaluate whether there are alternative examinations available, and take appropriate precautions. Generally, the radiation dose from a low-dose chest CT scan...[Read More] Managing Pregnancy After Low-Dose Lung CT: Health and Fertility Tips
Is Too Much Radiation from Multiple CT Scans Dangerous?
Computed Tomography (CT) Scan Hello, doctor. In the past few months, I have undergone an abdominal CT, a neck CT, a swallowing study, a barium swallow study, and several X-rays. Now, I have another brain CT scheduled. Is this too much radiation exposure?
Dr. Wang Yifen Reply:
Hello, the purpose of radiation-related examinations is to provide medical imaging information, ensuring that the medical benefits to the patient far outweigh the risks associated with radiation, following the principle of justification. There are no restrictions on the number, d...[Read More] Is Too Much Radiation from Multiple CT Scans Dangerous?
Assessing Radiation Exposure Risks from Repeated Imaging Exams in Taiwan
Risk assessment for repeated imaging examinations this year? Hello Doctor: When I was young, I frequently underwent full spine X-ray examinations due to scoliosis, approximately 40 times between the ages of 1 and 20. Two years ago and four years ago, I had surgery for sinusitis, ...
Dr. Wang Yifen Reply:
According to information from the American Society of Radiologic Technologists, the radiation dose from a single head CT scan is approximately 2 millisieverts (mSv), while a single abdominal and pelvic CT scan has a radiation dose of about 14 mSv. A Gallium scan, which is a nucle...[Read More] Assessing Radiation Exposure Risks from Repeated Imaging Exams in Taiwan
Understanding MRI Contrast Injection and X-Ray Imaging Procedures
Regarding the issue of using MRI contrast agents under fluoroscopy X-ray imaging? Hello Director Wang, I had an MRI scheduled due to a wrist injury, which required the administration of a contrast agent. I was not aware that X-rays would also be taken before and after the inject...
Dr. Wang Yifen Reply:
Hello, 1. The process of injecting contrast agents will be adjusted based on the specific examination being performed. What you described resembles the procedure for arthrography. Some physicians may arrange for arthrography before an MRI, injecting the contrast agent into the ...[Read More] Understanding MRI Contrast Injection and X-Ray Imaging Procedures
Understanding PET Scan Results: What Do Bright Spots Mean?
Positron Emission Tomography (PET) Report Issues Hello Doctor, I have a sensation of a foreign body and sharp pain in my oral and pharyngeal walls, which becomes more pronounced when swallowing saliva. There is also sharp pain and a foreign body sensation near the left base of my...
Dr. Wang Yifen Reply:
Hello, positron emission tomography (PET) is a specialty of nuclear medicine. The reports for PET scans are issued by board-certified nuclear medicine physicians. I recommend searching for "nuclear medicine" on the Taiwan e-Hospital platform and consulting a nuclear med...[Read More] Understanding PET Scan Results: What Do Bright Spots Mean?
Understanding Radiation Therapy Scope for Breast Cancer Treatment
The scope of electrotherapy? My younger sister was initially diagnosed with stage I breast cancer due to a tumor in her right breast. After tumor excision and sentinel lymph node biopsy, it was found that there was one tumor metastasis in the sentinel lymph node. During the surge...
Dr. Wang Yifen Reply:
Hello, the treatment for breast cancer includes surgical intervention, medical therapy, and radiation therapy. The treatment approach may be adjusted based on the histopathological classification, the site of tumor invasion, and the consideration of the benefits and side effects ...[Read More] Understanding Radiation Therapy Scope for Breast Cancer Treatment
Does a Cervical MRI Also Examine Other Neck Organs?
Will the cervical spine MRI results also examine other organs? Hello Doctor, I would like to ask some questions regarding the MRI. Last month, I visited the hospital due to discomfort in my neck and consulted a neurosurgeon who ordered an MRI of my cervical spine to check for any...
Dr. Wang Yifen Reply:
Hello, 1. The MRI imaging scan is set to focus on the cervical spine, utilizing a cervical spine coil. Other head and neck tissues may not be included in the scanning range, and the image signals may be affected by poor magnetic field quality in non-target areas, which can inte...[Read More] Does a Cervical MRI Also Examine Other Neck Organs?
Is It Safe to Undergo Multiple CT Scans in a Short Time?
CT scan interval issues I would like to ask about the interval between tests. I had a Myocardial Perfusion Scan on September 1, which is a nuclear medicine test, and then I had a whole-body CT scan on September 16. Should I avoid any X-rays or CT scans in the short term to minimi...
Dr. Wang Yifen Reply:
Hello, the purpose of radiation-related examinations is to provide medical imaging information, assessing that the medical benefits to the patient far outweigh the risks associated with radiation, which justifies the procedure. There are no restrictions on the number, dosage, or ...[Read More] Is It Safe to Undergo Multiple CT Scans in a Short Time?
Understanding X-Ray Radiation Dose and Safety for Hip Joint Imaging
Calculation and Effects of X-ray Radiation Exposure Recently, I had four X-rays taken of my hip joint. There were two images with the leg straight (one for each side) and two images with the leg bent (one for each side). I would like to ask: 1. What is the approximate dose for ea...
Dr. Wang Yifen Reply:
According to the information from the American Society of Radiologic Technologists website, the radiation dose for a hip joint X-ray is approximately 0.7 millisieverts, and for four images, it is about 2.8 millisieverts. Different angle images can provide more information to assi...[Read More] Understanding X-Ray Radiation Dose and Safety for Hip Joint Imaging
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 |