Topic 1: Photon-Counting CT: Improving Coronary Imaging in Patients with Heavy Calcification and Coronary Stents
Does chest tightness or chest pain always mean a blocked coronary artery? Many patients undergo coronary computed tomography angiography (CCTA) to evaluate their coronary arteries. However, when there is extensive coronary artery calcification or a previously implanted coronary stent, conventional CT scanners may be affected by calcium and metal-related artifacts, commonly known as the "blooming artifact." These artifacts can make the arterial lumen appear narrower than it actually is, making it difficult to determine whether a true blockage exists. As a result, some patients still need to undergo invasive coronary angiography for a definitive diagnosis.
The latest photon-counting CT (PCCT) offers significantly higher spatial resolution and effectively reduces image artifacts caused by coronary calcification and metallic stents. This enables physicians to visualize the coronary artery lumen more clearly. Even in patients with high coronary calcium scores or previously implanted stents, PCCT provides a more accurate assessment of the severity of coronary artery narrowing and helps detect in-stent restenosis. Studies have also shown that this technology improves diagnostic accuracy, reduces unnecessary invasive coronary angiography, and allows patients who require treatment to receive appropriate care more promptly.
If you experience chest discomfort or chest pain, or have risk factors such as hypertension, diabetes, hyperlipidemia, smoking, or a history of coronary stent implantation, consult your physician about whether coronary CT angiography is appropriate for you. At Far Eastern Memorial Hospital, the latest photon-counting CT technology provides high-resolution, non-invasive cardiovascular imaging, enabling clearer visualization of the coronary arteries and more accurate diagnosis.
Topic:2 Spectral CT: Revealing Small Renal Tumors with Greater Confidence
Some renal tumors are very small or have an attenuation similar to that of normal kidney tissue, making them difficult to detect on conventional CT scans.
The latest Spectral CT technology goes beyond conventional CT imaging by analyzing X-rays at different energy levels to generate low-energy images and iodine maps. These advanced images allow radiologists to determine whether a lesion truly enhances after contrast administration, providing valuable information about its blood supply. This helps differentiate tumors from cysts and other benign lesions with greater confidence.
For patients, the greatest benefit is improved diagnostic confidence. More accurate imaging can reduce the need for repeat examinations, minimize delays in diagnosis, and help physicians develop appropriate treatment plans at an earlier stage.
Far Eastern Memorial Hospital has introduced the latest Spectral CT technology to improve the detection of small lesions in the kidneys, liver, pancreas, and other abdominal organs. By providing more precise diagnostic information, this advanced imaging technology supports earlier diagnosis and more personalized patient care.
High-Resolution, Low-Dose Chest CT with Photon-Counting CT
Many people worry about radiation exposure from CT examinations and may delay evaluation of lung diseases because of these concerns. Fortunately, advances in CT technology now make it possible to achieve both higher image quality and lower radiation doses.
For conditions such as pulmonary fibrosis, emphysema, and lung cancer screening, the latest photon-counting CT (PCCT) offers ultra-high-resolution images that reveal fine lung structures in greater detail. This allows radiologists to detect subtle abnormalities more easily while reducing radiation exposure by approximately 30%. For patients who require long-term follow-up of lung diseases, PCCT not only improves diagnostic accuracy but also minimizes cumulative radiation exposure.
If you have a persistent cough, shortness of breath, a history of smoking, or a family history of lung cancer, talk with your physician about whether a chest CT examination is appropriate for you.
At Far Eastern Memorial Hospital, the latest high-resolution, low-dose photon-counting CT technology provides more accurate diagnosis of lung diseases while maintaining excellent image quality and reducing radiation exposure, helping patients receive timely and appropriate care.