Article
Radiology, Nuclear Medicine & Medical Imaging
Grant S. Roberts, Anthony Peret, Erin M. Jonaitis, Rebecca L. Koscik, Carson A. Hoffman, Leonardo A. Rivera-Rivera, Karly A. Cody, Howard A. Rowley, Sterling C. Johnson, Oliver Wieben, Kevin M. Johnson, Laura B. Eisenmenger
Summary: This study used four-dimensional flow MRI to comprehensively evaluate cerebral hemodynamics in middle-aged and older adults, and found that age and sex have an impact on blood flow and pulsatility.
Article
Geriatrics & Gerontology
Xiao-Jiao Liu, Ping Che, Mengya Xing, Xiao-Bing Tian, Chunli Gao, Xiuyan Li, Nan Zhang
Summary: The study found that patients with SIVD had lower blood flow velocity and higher pulsatility index in cerebral arteries compared to those with AD, along with increased lumen diameter, number of arteries with plaque, and total carotid plaque score. The Mini-Mental State Examination score was positively correlated with most major cerebral arteries' blood flow velocity and negatively correlated with common carotid artery lumen diameter, number of arteries with plaque, and total carotid plaque score in dementia patients. These findings suggest that macrovascular structural and functional changes are associated with cognitive impairment in SIVD patients, as well as with AD to a lesser extent.
FRONTIERS IN AGING NEUROSCIENCE
(2021)
Article
Acoustics
Petra Kesnerova, David Skoloudik, Roman Herzig, David Netuka, Istvan Szegedi, Katerina Langova
Summary: This study aimed to identify factors influencing pulsatility (PI) and resistance (RI) indices measured in patients with carotid atherosclerosis using TCCS. The study found that age, arterial hypertension, diabetes mellitus, carotid plaque width, and male gender were independent predictors of increased cerebral arterial resistance and/or pulsatility.
JOURNAL OF ULTRASOUND IN MEDICINE
(2022)
Article
Neurosciences
Reddy Ravikanth, Pooja Majumdar
Summary: This study investigated the effect of cerebral hemodynamics after cranioplasty in decompressive craniectomy patients using pre and postoperative TCD. The results showed that decompressive craniectomy significantly improved cerebral blood flow velocities on both the ipsilateral and contralateral cerebral hemispheres, indicating a reduction in cerebrovascular resistance. Cranioplasty improved neurological status by increasing cerebral blood flow velocity.
Article
Medicine, General & Internal
Tao Mei, Quan Zhou, Lie Chen, Zheyong Jia, Wei Xiao, Lixin Xu
Summary: This study aimed to explore the relationship between vascular transcranial Doppler pulsatility index (PI) and in-hospital mortality in patients with traumatic brain injury (TBI). It was found that there is a positive correlation between PI and in-hospital mortality when the PI is less than 1.11.
JOURNAL OF CLINICAL MEDICINE
(2022)
Article
Radiology, Nuclear Medicine & Medical Imaging
Xiaotong Xu, Xian Raynald, Xian Li, Ruichen Li, Hongchao Yang, Xi Zhao, Zhongrong Miao, Dapeng Mo
Summary: The PI derived from TCD assessment showed correlation with the FPR measured using pressure wire, indicating its potential as a marker for assessing cerebral blood flow in patients with atherosclerotic lesions.
QUANTITATIVE IMAGING IN MEDICINE AND SURGERY
(2023)
Article
Clinical Neurology
Michela Sforza, Edoardo Bianchini, Diletta Alivernini, Alessandra Spalloni, Valentina Teresi, Irene Madonia, Marco Salvetti, Francesco E. Pontieri, Giuliano Sette
Summary: This study investigated the cognitive and hemodynamic parameters and their association in patients with cerebrovascular disease during the acute and subacute phases. The results showed that cognitive performance was worse and pulsatility index was higher in the acute phase compared to the subacute phase. However, no correlations were found between cognitive and hemodynamic variables, indicating they are independent phenomena. The relationship between cerebral blood flow and cognitive performance was partially restored in the subacute phase.
NEUROLOGICAL SCIENCES
(2023)
Article
Obstetrics & Gynecology
Jiang-Nan Wu, Ming-Qing Li, Feng Xie, Bin Zhang
Summary: The study found that the second-trimester measured UtA indices had a satisfactory performance at the 9th week in predicting subsequent preeclampsia. The right UtA-RI was the first choice in ruling out preeclampsia, while the left UtA-PI showed the best authenticity of the prediction.
BMC PREGNANCY AND CHILDBIRTH
(2021)
Article
Clinical Neurology
Navpreet Reehal, Stephanie Cummings, Michael T. Mullen, Wesley B. Baker, David Kung, William Tackett, Christopher G. Favilla
Summary: This study compared cerebral autoregulation in all major cerebral vessels and found that while the time course of autoregulation was similar in all vessels, the magnitude of hemodynamic regulation was lower in the posterior cerebral artery. However, after adjusting for baseline flow differences, normalized gain was similar in all vessels.
FRONTIERS IN NEUROLOGY
(2021)
Article
Critical Care Medicine
Sergio Brasil, Hannah Romeijn, Esther K. Haspels, Wellingson Paiva, Arjen Schaafsma
Summary: This study compares the predictive value of the pulsatile apparent resistance (PaR) index versus the pulsatility index (PI) for intracranial hypertension (ICP > 20 mm Hg) in patients with traumatic brain injury. The results show that the discriminative power of PaR for discriminating intracranial hypertension was superior to PI. PaR seems to be a reliable noninvasive parameter for detecting intracranial hypertension.
NEUROCRITICAL CARE
(2023)
Article
Acoustics
Rashid Afkhami, Rachel Wong, Saadallah Ramadan, Frederick Rohan Walker, Sarah Johnson
Summary: This study introduced a new TCD-based timing index, TITCD, as an indicator of vascular stiffening and health, showing stronger correlations with CRF and PIMRI compared to existing indices. The clearer relationship of the proposed timing index with vascular aging factors underlines its utility as an early indicator of vascular stiffening.
ULTRASOUND IN MEDICINE AND BIOLOGY
(2021)
Article
Engineering, Biomedical
Li Xiong, Danyang Liu, Yawei Wang, Ka Sing Wong, Yubo Fan
Summary: A new index I derived from the "big-wave" phenomenon observed in transcranial Doppler signals can be used as an effective indicator for evaluating the enhancement of endothelial metabolism and neurogenic activity after long-term external counterpulsation treatment. The I is significantly higher in the ECP group compared to the No-ECP group after 35 days of treatment, and it is positively correlated with NIHSS change in the ECP group.
IEEE TRANSACTIONS ON NEURAL SYSTEMS AND REHABILITATION ENGINEERING
(2021)
Article
Clinical Neurology
Francisco Purroy, Enric Sanchez, Albert Lecube, Gloria Arque, Mikel Vicente-Pascual, Gerard Mauri-Capdevila, Nuria Torreguitart, Marta Hernandez, Ferran Barbe, Elvira Fernandez, Reinald Pamplona, Cristina Farras, Didac Mauricio, Marcelino Bermudez-Lopez
Summary: This study investigated the prevalence of cerebral microangiopathy (CM) in 3,721 asymptomatic individuals with low to moderate vascular risk. The results showed that 12.9% of the subjects had possible CM, with CM patients having a higher prevalence of plaques compared to non-CM individuals.
FRONTIERS IN NEUROLOGY
(2021)
Article
Acoustics
Rodrigo Tavares Brisson, Renata da Silva Almeida Santos, Luiz Henrique Soares Santos Stefano, Clara Monteiro Antunes Barreira, Josevania Fulgencio de Lima Arruda, Francisco Antunes Dias, Millene Rodrigues Camilo, Octavio Marques Pontes-Neto
Summary: This study found that age, female sex, pneumatized temporal bone, and temporal bone thickness are independent predictors of transcranial window failure. These findings may assist in selecting patients in whom echogenic contrast or other imaging methods could be used to assess intracranial vessels.
ULTRASOUND IN MEDICINE AND BIOLOGY
(2021)
Article
Agriculture, Dairy & Animal Science
J. Daniel Barreiro-Vazquez, Marta Miranda, Andres Barreiro-Lois
Summary: This study aimed to establish a protocol for renal Doppler ultrasound in adult healthy Holstein-Friesian cows and provide reference values for renal resistive index (RI) and pulsatility index (PI). The right kidney in cattle is always visible through a right abdominal window, while the left kidney is rarely accessible. Normal RI and PI values for the right kidney were 0.49 +/- 0.07 and 0.70 +/- 0.15, and for the left kidney were 0.53 +/- 0.05 and 0.79 +/- 0.11 in healthy Holstein-Friesian cows. An upper cut-off value for RI of 0.63 and for PI of 1.00 is suggested.
Article
Clinical Neurology
Sun-Young Oh, Do-Hyung Kim, Tae-Ho Yang, Byoung-Soo Shin, Seul-Ki Jeong
CLINICAL NEUROPHYSIOLOGY
(2015)
Article
Peripheral Vascular Disease
Seul-Ki Jeong, Ju-Hee Lee, Do-Hyun Nam, Joon-Tae Kim, Yeon Soo Ha, Sun-Young Oh, Se-Hyoung Park, Sang Hyuk Lee, Nahmkeon Hur, Hyo-Sung Kwak, Gyung-Ho Chung
JOURNAL OF ATHEROSCLEROSIS AND THROMBOSIS
(2015)
Article
Endocrinology & Metabolism
Seong-Woo Choi, Sun-Seog Kweon, Jin-Su Choi, Jung-Ae Rhee, Young-Hoon Lee, Hae-Sung Nam, Seul-Ki Jeong, Kyeong-Soo Park, So-Yeon Ryu, Hye-Rim Song, Min-Ho Shin
JOURNAL OF BONE AND MINERAL METABOLISM
(2016)
Article
Medicine, General & Internal
Yong-Woon Yun, Sun-Seog Kweon, Jin-Su Choi, Jung-Ae Rhee, Young-Hoon Lee, Hae-Sung Nam, Seul-Ki Jeong, Kyeong-Soo Park, So-Yeon Ryu, Seong-Woo Choi, Hee Nam Kim, Jane A. Cauley, Min-Ho Shin
JOURNAL OF KOREAN MEDICAL SCIENCE
(2015)
Article
Physiology
Seong-Woo Choi, Sun-Seog Kweon, Jin-Su Choi, Jung-Ae Rhee, Young-Hoon Lee, Hae-Sung Nam, Seul-Ki Jeong, Kyeong-Soo Park, So-Yeon Ryu, Hye-Rim Song, Min-Ho Shin
JOURNAL OF PHYSIOLOGICAL ANTHROPOLOGY
(2015)
Article
Cardiac & Cardiovascular Systems
Young-Hoon Lee, Min-Ho Shin, Jin-Su Choi, Jung-Ae Rhee, Hae-Sung Nam, Seul-Ki Jeong, Kyeong-Soo Park, So-Yeon Ryu, Seong-Woo Choi, Bok-Hee Kim, Gyung-Jae Oh, Sun-Seog Kweon
Article
Multidisciplinary Sciences
Seong-Woo Choi, Sun-Seog Kweon, Young-Hoon Lee, So-Yeon Ryu, Jin-Su Choi, Jung-Ae Rhee, Hae-Sung Nam, Seul-Ki Jeong, Kyeong-Soo Park, Hee Nam Kim, Min-Ho Shin
Article
Biotechnology & Applied Microbiology
Kap-Soo Han, Sang Hyuk Lee, Han Uk Ryu, Se-Hyoung Park, Gyung-Ho Chung, Young I. Cho, Seul-Ki Jeong
BIOMED RESEARCH INTERNATIONAL
(2017)
Article
Clinical Neurology
Chan-Hyuk Lee, Hyun Goo Kang, Ji Sung Lee, Han Uk Ryu, Seul-Ki Jeong
JOURNAL OF THE NEUROLOGICAL SCIENCES
(2018)
Article
Clinical Neurology
Chan-Hyuk Lee, Keun-Hwa Jung, Daniel J. Cho, Seul-Ki Jeong
Article
Clinical Neurology
Woo-Jin Lee, Seul-Ki Jeong, Kap-Soo Han, Sang Hyuk Lee, Young Jin Ryu, Chul-Ho Sohn, Keun-Hwa Jung
Article
Clinical Neurology
Chan-Hyuk Lee, Curie Ahn, Hyunjin Ryu, Hyun-Seung Kang, Seul-Ki Jeong, Keun-Hwa Jung
Summary: The prevalence of intracranial aneurysms and aneurysmal SAH was higher among patients with ADPKD. Factors such as age, female sex, dolichoectasia, and mitral inflow DT were positively associated with high-risk aneurysms in these patients, while hypercholesterolemia was negatively associated. More research is needed to confirm the clinical parameters identified in this study.
CEREBROVASCULAR DISEASES
(2021)
Article
Clinical Neurology
Hee-Jin Kim, Yong S. Shim, Kee Hyung Park, Chan-Nyoung Lee, San Jung, Soo Jin Yoon, Seul-Ki Jeong, Jee Hyang Jeong, Seong Hye Choi, Eun-Joo Kim, Jae-Won Jang, Kyunghun Kang, YoungSoon Yang, SangYun Kim
Summary: The study found that caregiver education did not significantly impact treatment discontinuation rate, but there were significant changes observed in some cognitive tests. Education did not have a significant effect on compliance with donepezil treatment.
JOURNAL OF CLINICAL NEUROLOGY
(2021)
Article
Clinical Neurology
Kee Hyung Park, YoungSoon Yang, Christopher Chen, Yong S. Shim, Jacqueline C. Domingueze, Chan-Nyoung Lee, Kyunghun Kang, Hee-Jin Kim, Seul-Ki Jeong, Jee Hyang Jeong, Zhen Hong, Soo Jin Yoon, Zhen-Xin Zhang, Eun-Joo Kim, Jae-Won Jang, Yansheng Li, Yun Xu, Yu-Te Lin, Qiumin Qu, Chaur-Jong Hu, Chih-Ho Chou, Dongsheng Fan, Nagaendran Kandiah, Yuan-Han Yang, Chi-ieong Lau, Leung-Wing Chu, Huali Wang, San Jung, Seong Hye Choi, SangYun Kim
Summary: This study investigated the treatment discontinuation rates and reasons in Asian patients with Alzheimer's disease newly prescribed donepezil, finding that the primary reason for discontinuation was adverse events, while cognitive function did not significantly worsen over the one-year period.
JOURNAL OF CLINICAL NEUROLOGY
(2021)
Article
Clinical Neurology
Chan-Hyuk Lee, Sang Hyuk Lee, Young I. Cho, Seul-Ki Jeong
Summary: The study revealed a significant association between ICA endothelial SIG and same-sided unilateral ischemic stroke of LAA, while CCA endothelial SIG showed a significant association with the presence of LAA ischemic stroke. The hemodynamics and roles of CCA and ICA in large artery ischemic stroke should be considered separately.
CEREBROVASCULAR DISEASES
(2021)