Short-term effects of exercise on optic nerve and macular perfusion measured by optical coherence tomography angiography

Purpose: To evaluate the effects of exercise on optic nerve and macular perfusion using optical coherence tomography angiography. Methods: Thirteen eyes of 13 healthy volunteers were examined using a high-speed and high-resolution spectral-domain optical coherence tomography XR Avanti with a split-spectrum amplitude-decorrelation angiography algorithm. Blood pressure, heart rate, the mean area of the foveal avascular zone , and flow density on the optic nerve head and macula, before and after exercise were measured and analyzed. Results: Mean patient age was 27.3 ± 3.5 years. Heart rate, systolic and diastolic blood pressure increased significantly after exercise (P
Source: RETINA - Category: Opthalmology Tags: Original Study Source Type: research

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Source: Nuklearmedizin - Category: Radiology Authors: Tags: Physiol Meas Source Type: research
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Source: Investigative Radiology - Category: Radiology Tags: Original Articles Source Type: research
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Abstract BACKGROUND: Previous studies have estimated that the risk of recurrent stroke was nearly 20% shortly after a transient ischemic attack (TIA) or minor stroke. A missing or hypoplastic (
Source: Brain Research - Category: Neurology Authors: Tags: Brain Res Source Type: research
Publication date: Available online 7 September 2019Source: Journal of Cardiology CasesAuthor(s): Shozo Sueda, Hiroaki KohnoAbstractA 61-year-old man was admitted to our hospital due to chest pain on both rest and effort. After the computed tomography coronary angiography, coronary stenosis was recognized at segment 3. Because inferior ischemia on stress myocardial perfusion scintigraphy with 201 thallium chloride induced by adenosine was found, we planned to perform the coronary intervention. After control coronary angiography, no significant stenosis was found in the right coronary artery. Intracoronary acetylcholine test...
Source: Journal of Cardiology Cases - Category: Cardiology Source Type: research
To explore the relationship between computed tomography (CT) angiography (CTA)-derived collateral status and CT perfusion (CTP)-derived tissue viability.
Source: Clinical Radiology - Category: Radiology Authors: Source Type: research
ConclusionsPerfusion defect reversibility improved specificity in female patients for detection of coronary disease compared to perfusion defect size and extent alone. Supine images provided superior accuracy for detection of coronary disease compared to upright images.
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