A New Era for Your Heart: How Photon-Counting CT is Revolutionizing Cardiac Care in the Philippines
When it comes to caring for your heart, every single detail matters. In the Philippines, where cardiovascular diseases remain one of the leading causes of illness and death, early and accurate diagnosis plays a vital role in helping patients receive the right treatment at the right time.
At St. Luke’s Medical Center – Global City, we are committed to bringing world-class medical innovations that improve patient care. Recognized as the country’s No. 1 specialized hospital for Cardiac Surgery and a leader in Cardiology, we ensure you have access to world-class cardiac diagnostics right when it matters most.
As the first private hospital in the Philippines to introduce the Siemens NAEOTOM Alpha Photon-Counting CT (PCCT) scanner, we are advancing the way heart disease and many other conditions are diagnosed with greater precision and confidence.
What is Photon-Counting CT?
Think of the difference between watching a movie in standard high definition and in ultra-high definition (UHD). Both provide clear images, but UHD reveals finer details that might otherwise go unnoticed.
Photon-Counting CT represents a similar leap in medical imaging.
Unlike conventional CT scanners, which first convert X-rays into light before producing an image, Photon-Counting CT directly detects individual X-ray photons and measures their energy. This more efficient process reduces image noise, improves spatial resolution, and provides exceptionally detailed images that help physicians evaluate even the smallest anatomical structures with greater confidence.
“Conventional CT already provides excellent diagnostic images,” explains Dr. Maricar P. Reyes, Head of the St. Luke’s-Global City Institute of Radiology. “Photon-Counting CT takes that capability even further. It offers significantly sharper images, improved tissue characterization through spectral imaging, and enhanced visualization of structures that can be difficult to evaluate with conventional CT, such as heavily calcified coronary arteries and coronary stents. These advances give physicians greater confidence in making accurate diagnoses and selecting the most appropriate treatment for each patient.”
The Power of Spectral Imaging
One of the unique advantages of Photon-Counting CT is that spectral imaging is automatically active with every scan.
Traditional CT primarily produces grayscale images. Photon-Counting CT, however, also captures information about the energy of each X-ray photon, providing additional data about the composition of different tissues. This allows radiologists to generate specialized image reconstructions that improve tissue characterization and help distinguish between calcium, iodine, blood vessels, soft tissues, and other structures with greater precision.
This additional information can improve diagnostic confidence while often eliminating the need for additional imaging.
How Photon-Counting CT Benefits Heart Imaging
Cardiac CT demands exceptional image quality because it requires visualization of tiny coronary arteries that are constantly moving with every heartbeat. Photon-Counting CT combines ultra-high spatial resolution, improved contrast, and spectral imaging to overcome many of the limitations of conventional CT. The result is clearer visualization of the coronary arteries, better assessment of plaque and stents, and more confident evaluation of both common and complex cardiovascular conditions.
1. Better Assessment of Coronary Artery Disease
Many patients with coronary artery disease develop calcium deposits within their coronary arteries. On conventional CT scans, these calcium deposits can appear larger than they actually are—a phenomenon known as calcium blooming artifact—which may obscure the true size of the vessel lumen.
The ultra-high spatial resolution of Photon-Counting CT substantially reduces blooming artifacts, allowing physicians to better visualize the coronary arteries and more accurately assess the degree of narrowing. In appropriately selected patients, this may reduce the need for invasive diagnostic coronary angiography.
2. Improved Evaluation of Coronary Stents
For patients who have previously undergone coronary angioplasty with stent placement, regular follow-up is important.
Metallic stents can create artifacts on conventional CT that make it difficult to evaluate the inside of the stent. Photon-Counting CT reduces these metal-related artifacts and improves visualization of the stent lumen, allowing physicians to more confidently assess stent patency and detect recurrent narrowing when present.
3. Exceptional Detail for Congenital Heart Disease
Congenital heart disease often involves complex anatomy and tiny blood vessels that require exceptional image quality.
The ultra-high spatial resolution of Photon-Counting CT provides detailed visualization of cardiac structures and vascular anatomy, helping cardiologists and cardiovascular surgeons better understand even complex congenital abnormalities and plan appropriate treatment.
Patient-Centric Benefits: Safety Meets Comfort
Beyond its advanced imaging capabilities, Photon-Counting CT also offers several patient-centered advantages.
Lower Radiation Exposure: Because Photon-Counting CT uses X-rays more efficiently, many examinations can be performed using lower radiation doses while maintaining excellent image quality. This is particularly valuable for patients who require repeated imaging, including children and individuals undergoing long-term follow-up.
Potential for Lower Contrast Dose: The improved contrast-to-noise performance and spectral imaging capabilities may allow the use of lower doses of iodinated contrast material in selected examinations while still maintaining high-quality diagnostic images. This may be beneficial for appropriately selected patients, particularly those in whom minimizing contrast exposure is desirable.
Fast Image Acquisition: The scanner acquires images extremely rapidly, reducing breath-hold times and improving patient comfort. Faster scans also help minimize motion artifacts, which is especially important when imaging the constantly beating heart.
World-Class Precision, Close to Home
At St. Luke's Medical Center – Global City, innovation is driven by one meaningful purpose: protecting the hearts of the families who trust us with their care.
Photon-Counting CT represents one of the most significant advances in computed tomography in decades. By combining ultra-high-resolution imaging with spectral technology, it allows physicians to evaluate cardiovascular disease with greater precision, improved tissue characterization, and enhanced diagnostic confidence.
Because when it comes to protecting your heart, having the clearest possible picture can make all the difference.
To learn more about our Photon-Counting CT services or to schedule an appointment, please contact the St. Luke’s Product Information Hub at (63 2) 8789-7700 ext. 5104 or through mobile numbers 0947-9930471, 0939-9161805, 0928-520039, or 0998-5822276, or the CT Scan Unit at 8789-7700 ext. 1024. St. Luke’s CT Scan Services are open 24/7.
