A Computed Tomography (CT) scan is a diagnostic imaging technique that combines X-ray technology with computer processing to create detailed cross-sectional images of the body’s internal structures. Unlike traditional X-rays, which produce flat, two-dimensional images, a CT scan generates comprehensive, layered visuals that allow for the precise examination of bones, soft tissues, and blood vessels.
During a CT scan, a series of X-ray beams rotate around the body, capturing multiple images from different angles. These images are processed by sophisticated computer algorithms to produce highly detailed slices of the target area.
CT scans are widely utilised across various medical disciplines, including neurology, to diagnose and monitor a range of conditions. They are especially helpful in emergency situations due to their speed and accuracy in detecting abnormalities. From assessing acute neurological issues such as stroke or head injuries to identifying tumours and structural irregularities, CT scans have become an indispensable tool in modern medicine.
While the procedure is non-invasive and typically painless, it involves the use of ionising radiation. However, the benefits of early and accurate diagnosis often outweigh the minimal risks associated with this exposure. At Siow Neurology, we prioritise patient safety by employing the CT technology and adhering to stringent radiation safety protocols to ensure optimal outcomes.
A CT scan is a non-invasive imaging technique that provides detailed cross-sectional images of the body using X-rays and computer processing.
When is a Brain CT Scan Recommended?
A Brain CT scan is recommended in various clinical scenarios to provide a detailed view of the brain and surrounding structures. Some of the key situations include:
Head trauma: to assess for fractures, brain bleeding, swelling, or other injuries resulting from accidents or falls.
Stroke symptoms: when there are signs of a stroke, such as sudden weakness, confusion, speech difficulties, or vision loss, to detect bleeding or blockages.
Severe headaches: especially when accompanied by other symptoms like nausea, vomiting, or neurological deficits, to rule out conditions like brain tumors or aneurysms.
Seizures: for individuals experiencing their first seizure or when there is a change in seizure patterns, to identify possible underlying causes.
Unexplained neurological symptoms: such as dizziness, weakness, memory loss, or changes in mental status, to investigate potential structural abnormalities.
Infections or inflammation: suspected cases of meningitis, encephalitis, or abscesses.
Tumour detection: to evaluate known or suspected brain tumours or monitor their progression or response to treatment.
Hydrocephalus: to detect abnormal accumulation of cerebrospinal fluid in the brain.
Congenital anomalies: in children, to investigate developmental issues or congenital brain abnormalities.
Post-surgical or post-treatment monitoring: to evaluate the success of surgical procedures or ongoing treatments related to brain conditions.
CT scans are quick and effective, often chosen when immediate results are necessary, such as in emergency situations. However, your doctor will determine the need based on specific symptoms, medical history, and physical examination.
How does a CT scan work?
A CT scan operates by utilising a combination of X-ray technology and comprehensive computer processing to produce detailed cross-sectional images of the body. During the procedure, the patient lies on a motorised table that moves slowly through the circular opening of the CT scanner. The scanner houses an X-ray tube and detectors that rotate around the body, emitting controlled X-ray beams at multiple angles.
These beams penetrate the targeted area and are absorbed by tissues in varying amounts depending on their density, creating patterns of attenuation. The detectors capture these patterns and transmit the data to a computer, which reconstructs the information into detailed images or “slices.” These slices can be viewed individually or assembled into three-dimensional models for comprehensive analysis. This integration of technology enables precise visualisation of bones, organs, and soft tissues, which makes CT scans an essential tool for accurate diagnosis and treatment planning.
What are the benefits of a CT scan?
CT scans are a powerful diagnostic tool that offers numerous advantages, making them an essential component of modern medical imaging. Below are the key benefits of a CT scan:
Rapid imaging: CT scans are fast, often completing within minutes, which makes them ideal for emergency situations such as trauma or stroke.
Detailed visualisation: they provide high-resolution images of bones, soft tissues, and blood vessels, aiding in precise diagnosis.
Non-invasive: the procedure is painless and does not require surgery, which minimises discomfort for patients.
3D imaging capability: CT technology allows for the creation of three-dimensional images, which provides comprehensive views of complex anatomical structures.
Wide accessibility: CT scanners are widely available in hospitals and diagnostic centers, which helps ensure prompt imaging when needed.
Effective for bone and blood vessel imaging: CT scans excel at detecting fractures, abnormalities in blood vessels, and conditions involving the lungs and abdomen.
Guidance for procedures: CT scans assist in guiding biopsies, surgeries, and radiation therapy with precision.
These benefits highlight why CT scans are a preferred choice for accurate and timely medical diagnoses.
A CT scan provides a detailed, cross-sectional view of internal structures, which facilitates accurate and efficient diagnosis.
Which neurological conditions are CT scans used to diagnose?
At Siow Neurology, we utilise CT scans to accurately diagnose and monitor a wide range of neurological conditions. This imaging technology allows our specialists to quickly and effectively detect the following:
Traumatic brain injury (TBI): detects skull fractures, brain bleeding (hematomas), contusions, or swelling caused by head trauma.
Stroke: identifies ischemic strokes (due to blood clots) and hemorrhagic strokes (due to brain bleeding).
Brain tumours: locates tumours, assesses their size, and checks for swelling or pressure on nearby structures.
Hydrocephalus: detects abnormal cerebrospinal fluid accumulation in the brain’s ventricles.
Brain infections: identifies abscesses, encephalitis, or complications from meningitis, such as swelling or fluid buildup.
Cerebral aneurysms: detects bulging blood vessels that could rupture and cause brain bleeding.
Seizure disorders: investigates structural abnormalities or injuries that may trigger seizures, particularly first-time seizures.
Dementia and cognitive disorders: evaluates brain shrinkage or damage associated with conditions like Alzheimer’s disease.
Congenital brain conditions: identifies structural abnormalities present from birth, such as brain or skull malformations.
Brain edema: evaluates swelling of brain tissue due to trauma, infection, or other causes.
Vascular conditions: detects issues like arteriovenous malformations (AVMs) or blood clots in brain blood vessels.
Chiari malformations: assesses abnormalities at the base of the skull where the brainstem meets the spinal cord.
Multiple sclerosis (MS): occasionally detects advanced plaques or brain atrophy, though MRI is typically preferred.
Brain hemorrhages: identifies intracerebral or subarachnoid bleeding from trauma, aneurysm rupture, or hypertension.
Inner ear and sinus disorders: diagnoses structural problems that may cause dizziness, balance issues, or hearing loss.
What results can I expect?
When you book a CT scan appointment at Siow Neurology , our team ensures a comfortable experience from start to finish. On the day of your scan, you will be greeted by our friendly staff who will guide you through the process and address any questions or concerns you may have.
During the procedure, our skilled technicians use comprehensive imaging equipment to capture detailed images of the targeted area, ensuring accuracy and precision. Once the scan is complete, the images are carefully reviewed by our experienced radiologists, who provide a comprehensive report. We prioritise timely results, so you can typically expect your report to be ready within 24 to 48 hours.
Your referring doctor or specialist will then discuss the findings with you in detail, helping you understand the results and plan any necessary next steps. At Siow Neurology, we are dedicated to delivering clarity, confidence, and exceptional care throughout your diagnostic journey.
How many sessions are needed for a CT scan?
Typically, a CT scan requires just one session, as the procedure is designed to be completed in a single appointment. The entire process, from preparation to the actual scan, usually takes less than an hour, with the imaging itself often lasting only a few minutes. However, in certain cases where follow-up scans are necessary to monitor a condition or track treatment progress, additional sessions may be recommended.
At Siow Neurology, we ensure that each session is as efficient and comfortable as possible, providing clear guidance on whether further scans might be needed based on your individual care plan. Book your CT scan at Siow Neurology today for precise diagnosis and compassionate care every step of the way.
Frequently Asked Questions (FAQs)
No, a CT scan is a painless procedure. You may need to remain still during the scan, and if contrast material is used, you might experience a brief sensation of warmth or a metallic taste.
Preparation depends on the type of CT scan. You may be asked to avoid eating or drinking for a few hours before the scan, especially if contrast material is used. It is important to inform your healthcare provider about any medications you are taking and any allergies you have.
No, you should remove all jewellery and metal objects before the scan, as they can interfere with image quality. You may be provided with a hospital gown to wear during the procedure.
CT scans involve exposure to ionising radiation, which carries a very small potential risk of developing cancer. However, the diagnostic benefits typically outweigh these risks. It’s important to discuss any concerns with your healthcare provider.
Yes, you can usually drive yourself home after a CT scan. However, if you received a sedative or if contrast material was used, it’s advisable to have someone accompany you.
The time frame for receiving results can vary. Typically, a radiologist will analyse the images and send a report to your referring doctor within a few days. Your doctor will then discuss the findings with you.
CT scans are generally avoided during pregnancy due to radiation exposure, unless absolutely necessary. Alternative imaging methods, such as ultrasound or MRI, may be considered. Always inform your healthcare provider if you are pregnant or suspect you might be.
Both CT scans and MRIs provide detailed images of the body’s internal structures. CT scans use X-rays and are typically faster, which makes them suitable for emergencies. MRIs use magnetic fields and radio waves, which provides greater detail for soft tissues without radiation exposure.
The use of contrast material depends on the area being examined and the specific diagnostic requirements. Your doctor will determine if contrast is necessary and discuss any related considerations with you.
The cost of a CT scan varies based on factors such as the type of scan, location, and whether contrast material is used. At Siow Neurology, the package for CT scan ranges between $500 to $800.
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MT ALVERNIA HOSPITAL
820 Thomson Road #08-59 Medical Centre D Singapore 574623
