Articles tagged with Perfusion
A new stress test protocol investigating reduced perfusion imaging in low-risk patients undergoing SPECT myocardial perfusion imaging has been found to be diagnostically safe. The study predicted that using exercise ECG stress testing alone would have no adverse effects on prognosis at five years.
A portable normothermic perfusion device has been tested on a group of twelve transplant patients, showing safe and effective preservation of donor lungs. The device has the potential to greatly improve transplant success and expand the pool of adequately-functioning donor lungs.
The CORE320 study demonstrated that combined non-invasive CT angiography and myocardial perfusion imaging has robust diagnostic accuracy for identifying patients with flow-limiting coronary artery disease. The addition of CTP increased diagnostic power, allowing clinicians to distinguish between anatomic and flow-limiting stenoses.
Researchers have discovered a strategy to accelerate arteriogenesis, allowing blood vessels to bypass occlusions and improve blood perfusion. This approach has therapeutic potential for treating ischemic diseases such as heart attacks and strokes.
A new technique measures myocardial perfusion reserve and volume reserve to predict severe stenosis in coronary arteries. This method detects 50% or greater narrowing with excellent sensitivity, enabling timely intervention for high-risk patients.
A new image-guided technique may enable more stroke patients to be successfully treated, particularly those living far from specialist medical care. Researchers found no difference in recovery time or 90-day survival rates between patients receiving treatment within six hours of symptom onset.
A US patient has received the world's first transplanted lungs treated with an experimental repair process. The treatment, part of a national study, uses STEEN SolutionTM to evaluate suitability of donor lungs for transplantation. If successful, it could increase transplantable lung supply and reduce wait times.
Cardiac patients can now receive a reduced radiation dose during diagnostic perfusion imaging, thanks to new image-processing software. The study found that images produced with a half-dose protocol were of similar quality to those obtained with conventional protocols, while reducing the patient's exposure to radiation.
A study in JAMA found that multiple cardiac imaging tests are common and associated with a high cumulative estimated radiation dose for patients. The study revealed that myocardial perfusion imaging (MPI) accounts for the highest radiation burden, with many patients receiving doses over 100mSv.
Researchers at Mayo Clinic have developed a new image-processing algorithm that reduces perfusion CT radiation doses by up to 20 times, improving image quality and patient safety. The algorithm has been successfully tested in animal models and is being explored for clinical implementation.
Researchers at the Mayo Clinic have developed an image-processing algorithm that can reduce the amount of radiation used in perfusion CT scanning, a technology used for diagnosing stroke, cancer, and possibly heart disease. The new adaptive algorithm compares multiple scans and effectively reduces image noise while preserving iodine si...
A study found that perfusion CT can detect hemodynamic changes in liver tissue, indicating drug-induced hepatic damage. The research team correlated perfusion CT parameters with ALT levels and treatment cycles, revealing increased HPI and MTT in patients undergoing chemotherapy.
A large medical center implemented an imaging algorithm to reduce cumulative radiation exposure and CT scans for patients with aneurysmal subarachnoid hemorrhages. The study showed a 25.6% decrease in mean number of CT examinations per patient and a 12.1% overall reduction in cumulative radiation exposure.
A new computed-tomography-based protocol can identify coronary artery narrowing and myocardial ischemia simultaneously, improving diagnostic accuracy for clinically significant coronary artery disease. The study's results compare favorably to SPECT stress imaging and cardiac catheterization, with lower radiation doses.
Chronic smoking impairs brain blood flow recovery after long-term heavy drinking, according to a new study. Brain perfusion in frontal and parietal cortices improved with abstinence, but smokers showed significantly less recovery, particularly in the frontal lobes.
A study published in the Journal of Nuclear Medicine found that myocardial perfusion testing with gated single photon emission computed tomography (gated SPECT) is a more accurate predictor of prognosis in chronic ischemic heart disease. Gated SPECT identified individuals at risk for future cardiac events, enabling early initiation of ...
This study investigates the correlation between changes in CT perfusion parameters pre- and post-TACE treatment of HCC and various responses to TACE. The findings suggest that CT perfusion imaging is a feasible technique for monitoring response of HCC to TACE, indicating its potential as an adjunctive tool in clinical practice.
The WVU study demonstrates that CT perfusion imaging can diagnose acute ischemic stroke with high accuracy, particularly for major vessel occlusion strokes. The technology allows for fast and targeted treatment, reducing the risk of life-threatening complications.
Researchers at Cedars-Sinai Medical Center have developed a novel approach to minimize radiation exposure during coronary CTA, while maintaining diagnostic image quality. The 'Low-dose Coronary CT Angiogram' technique exposes patients to full-dose x-rays for only a fraction of the heart cycle, significantly reducing radiation exposure.
A study of carotid artery stenting found that the procedure significantly improved cognitive speed and memory function in patients with impaired brain perfusion. The results suggest that stenting may offer benefits beyond reduced stroke risk for these patients.
A Florida State University research team has developed a biomedical device called a perfusion bioreactor that allows for the large-scale growth of adult stem cells from bone marrow. The device mimics the body's circulatory system and delivers nutrients to stem cells, enabling controlled differentiation into various tissue types.
A study examining 372 stroke patients found that CT perfusion imaging can accurately determine which patients will benefit from clot-busting medicines or clot retrieval devices. The results show a significant reduction in hemorrhages compared to traditional time-based treatments.
Perfusion CT scans can reveal how much blood is present in the brain and how quickly it's moving, helping doctors decide on treatments such as surgery or clotbuster drugs. The technique has shown promise in assessing patients with stroke or carotid artery issues, potentially improving treatment outcomes.
Researchers compared MPI and CCTA scans to determine a more comprehensive assessment of coronary artery disease. Combining functional SPECT MPI and anatomic CT scans provided valuable information on severe myocardial perfusion defects and calcium deposits.
A study published by the American Physiological Society reveals a strong correlation between plantar pressure and skin perfusion distribution in diabetic patients. The researchers found that areas with high plantar pressures, such as the metatarsal heads, had significantly lower skin perfusion values.
A study found that lipid-lowering therapy may not be effective in arresting or reversing CAD in one out of four patients, highlighting the need for personalized medical management. PET MPI can help identify treatment failure and guide tailored treatment strategies.
A study found that nearly 56% of diabetic patients have stress-induced ischemic defects revealed by SPECT myocardial perfusion imaging, regardless of age or sex. These defects were more prevalent in asymptomatic patients than those with a history of chest pain.