99mTc-human albumin microspheres were injected at a slow rate into the hepatic arteries of 24 patients before starting intraarterial chemotherapy for liver cancer. The distribution patterns of radiolabeled microspheres were significantly different from those obtained in contrast angiography in 13 of 22 patients. Liver uptake of slowly injected microspheres was greater than 75% in 16 of 24 patients and less than 25% in 4 of 24 patients. A significantly increased arterial blood supply to intrahepatic neoplastic regions was demonstrated in 12 of 20 patients. Microsphere examination allowed an easy evaluation of the relative perfusion of the liver and of the intrahepatic distribution of arterial blood flow in all patients.
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http://dx.doi.org/10.1007/BF00252806 | DOI Listing |
J Cereb Blood Flow Metab
January 2025
Department of Applied Physics and Electronics, Umeå University, Umeå, Sweden.
Variations in cerebral blood flow and blood volume interact with intracranial pressure and cerebrospinal fluid dynamics, all of which play a crucial role in brain homeostasis. A key physiological modulator is respiration, but its impact on cerebral blood flow and volume has not been thoroughly investigated. Here we used 4D flow MRI in a population-based sample of 65 participants (mean age = 75 ± 1) to quantify these effects.
View Article and Find Full Text PDFBackground: Regionally anticoagulated continuous renal replacement therapy with citrate is the first choice for critically ill patients with acute kidney injury. If citrate that reaches the patient exceeds the metabolic capacity, metabolic alkalosis will follow. Bicarbonate from the treatment fluids will also reach the patient and add to the bicarbonate load.
View Article and Find Full Text PDFPLoS One
January 2025
Department of Radiology, Chung-Ang University Gwangmyeong Hospital, Seoul, Republic of Korea.
This study aimed to evaluate the feasibility of VX2 tumor in rabbit auricles as an experimental model for intra-arterial embolization. This study was approved by our Institutional Animal Care and Use Committee. VX2 tumors were implanted in both auricles of 12 New Zealand White Rabbits.
View Article and Find Full Text PDFPLoS One
January 2025
Department of Mechanical Engineering, Carnegie Mellon University, Pittsburgh, PA, United States of America.
In this work, we propose a non-contact video-based approach that estimates an individual's blood pressure. The estimation of blood pressure is critical for monitoring hypertension and cardiovascular diseases such as coronary artery disease or stroke. Estimation of blood pressure is typically achieved using contact-based devices which apply pressure on the arm through a cuff.
View Article and Find Full Text PDFAge Ageing
January 2025
North Bristol NHS Trust - Geriatric Medicine, Southmead Hospital, Southmead Road, Bristol BS10 5NB, UK.
Chronic subdural haematoma (cSDH) is a common subtype of traumatic brain injury, typically affecting older people living with frailty and multimorbidity. Until now, no published guideline has existed internationally to guide management, perhaps explaining why the care of the older cSDH patient varies between neurosurgical centres. The Improving Care in Elderly Neurosurgery Initiative guideline is the first guideline dedicated to the care of patients with cSDH across the entire patient pathway, from initial presentation through to rehabilitation and discharge after surgery.
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