Resting state MRI reveals spontaneous physiological fluctuations in the kidney and tracks diabetic nephropathy in rats
Am J Physiol Renal Physiol. 2024 Apr 25. doi: 10.1152/ajprenal.00423.2023. Online ahead of print.ABSTRACTThe kidneys maintain fluid-electrolyte balance and excrete waste in the presence of constant fluctuations in plasma volume and systemic blood pressure. The kidneys perform these functions to control capillary perfusion and glomerular filtration by modulating the mechanisms of autoregulation. An effect of these modulations are spontaneous, natural fluctuations in nephron perfusion. Numerous other mechanisms can lead to fluctuations in perfusion and flow. The ability to monitor these spontaneous physiological fluctuations...
Source: American Journal of Physiology. Renal Physiology - April 25, 2024 Category: Physiology Authors: Edwin J Baldelomar Darya Morozov Leslie D Wilson Cihat Eldeniz Hongyu An Jennifer R Charlton Adam Bauer Shella D Keilholz Monica L Hulbert Kevin M Bennett Source Type: research
Anatomical and volumetric description of the guiana dolphin (Sotalia guianensis) brain from an ultra-high-field magnetic resonance imaging
In this study, we present for the first time a full anatomical description of the Guiana dolphin's brain based on high-resolution ultra-high-field magnetic resonance imaging, providing an exceptional level of brain anatomical details, and enriching our understanding of the species. Brain structures were labeled and volumetric measurements were delineated for many distinguishable structures, including the gray matter and white matter of the cerebral cortex, amygdala, hippocampus, superior and inferior colliculi, thalamus, corpus callosum, ventricles, brainstem and cerebellum. Additionally, we provide the surface anatomy of ...
Source: Brain Structure and Function - April 25, 2024 Category: Neuroscience Authors: Kamilla Avelino-de-Souza Heitor Mynssen Khallil Chaim Ashley N Parks Joana M P Ikeda Hayd ée Andrade Cunha Bruno Mota Nina Patzke Source Type: research
Unravelling pituitary tumours in medically treated patients with acromegaly: the impact of systematic MRI reassessment
CONCLUSION: In most patients with pharmacologically treated acromegaly, we identified a certain or suspected pituitary tumor. These findings were more frequent compared to the routine MRI reports. Based on our results, patients will be considered for a change in long-term treatment modality.PMID:38659302 | DOI:10.1177/02841851241246107 (Source: Acta Radiologica)
Source: Acta Radiologica - April 25, 2024 Category: Radiology Authors: Shahriar Atai Martin Knudtzon Andersen Markus Wiedmann Daniel Dahlberg Kristin Astrid B Øystese Jens Bollerslev Geir Ringstad Ansgar Heck Source Type: research
Efficacy of fat quantification methods used in MRI to distinguish between normal, benign, and malignant bone marrow pathologies in children
CONCLUSION: T1-SIV, OP/IP SR, and FF may potentially distinguish normal from pathological bone marrow. OP/IP SR and FF values detected malignant infiltration with high sensitivity and specificity in this study. However, only OP/IP SR may significantly differentiate benign and malignant bone marrow pathologies which needs to be confirmed in the future study with a larger patient population.PMID:38659300 | DOI:10.1177/02841851241247110 (Source: Acta Radiologica)
Source: Acta Radiologica - April 25, 2024 Category: Radiology Authors: Duygu Erkal Tonkaz Rifat Ozpar Mehmet Tonkaz Zeynep Yazici Source Type: research
Resting state MRI reveals spontaneous physiological fluctuations in the kidney and tracks diabetic nephropathy in rats
Am J Physiol Renal Physiol. 2024 Apr 25. doi: 10.1152/ajprenal.00423.2023. Online ahead of print.ABSTRACTThe kidneys maintain fluid-electrolyte balance and excrete waste in the presence of constant fluctuations in plasma volume and systemic blood pressure. The kidneys perform these functions to control capillary perfusion and glomerular filtration by modulating the mechanisms of autoregulation. An effect of these modulations are spontaneous, natural fluctuations in nephron perfusion. Numerous other mechanisms can lead to fluctuations in perfusion and flow. The ability to monitor these spontaneous physiological fluctuations...
Source: Am J Physiol Renal P... - April 25, 2024 Category: Urology & Nephrology Authors: Edwin J Baldelomar Darya Morozov Leslie D Wilson Cihat Eldeniz Hongyu An Jennifer R Charlton Adam Bauer Shella D Keilholz Monica L Hulbert Kevin M Bennett Source Type: research
Anatomical and volumetric description of the guiana dolphin (Sotalia guianensis) brain from an ultra-high-field magnetic resonance imaging
In this study, we present for the first time a full anatomical description of the Guiana dolphin's brain based on high-resolution ultra-high-field magnetic resonance imaging, providing an exceptional level of brain anatomical details, and enriching our understanding of the species. Brain structures were labeled and volumetric measurements were delineated for many distinguishable structures, including the gray matter and white matter of the cerebral cortex, amygdala, hippocampus, superior and inferior colliculi, thalamus, corpus callosum, ventricles, brainstem and cerebellum. Additionally, we provide the surface anatomy of ...
Source: Brain Structure and Function - April 25, 2024 Category: Neuroscience Authors: Kamilla Avelino-de-Souza Heitor Mynssen Khallil Chaim Ashley N Parks Joana M P Ikeda Hayd ée Andrade Cunha Bruno Mota Nina Patzke Source Type: research
Resting state MRI reveals spontaneous physiological fluctuations in the kidney and tracks diabetic nephropathy in rats
Am J Physiol Renal Physiol. 2024 Apr 25. doi: 10.1152/ajprenal.00423.2023. Online ahead of print.ABSTRACTThe kidneys maintain fluid-electrolyte balance and excrete waste in the presence of constant fluctuations in plasma volume and systemic blood pressure. The kidneys perform these functions to control capillary perfusion and glomerular filtration by modulating the mechanisms of autoregulation. An effect of these modulations are spontaneous, natural fluctuations in nephron perfusion. Numerous other mechanisms can lead to fluctuations in perfusion and flow. The ability to monitor these spontaneous physiological fluctuations...
Source: American Journal of Physiology. Renal Physiology - April 25, 2024 Category: Physiology Authors: Edwin J Baldelomar Darya Morozov Leslie D Wilson Cihat Eldeniz Hongyu An Jennifer R Charlton Adam Bauer Shella D Keilholz Monica L Hulbert Kevin M Bennett Source Type: research
Resting state MRI reveals spontaneous physiological fluctuations in the kidney and tracks diabetic nephropathy in rats
Am J Physiol Renal Physiol. 2024 Apr 25. doi: 10.1152/ajprenal.00423.2023. Online ahead of print.ABSTRACTThe kidneys maintain fluid-electrolyte balance and excrete waste in the presence of constant fluctuations in plasma volume and systemic blood pressure. The kidneys perform these functions to control capillary perfusion and glomerular filtration by modulating the mechanisms of autoregulation. An effect of these modulations are spontaneous, natural fluctuations in nephron perfusion. Numerous other mechanisms can lead to fluctuations in perfusion and flow. The ability to monitor these spontaneous physiological fluctuations...
Source: Am J Physiol Renal P... - April 25, 2024 Category: Urology & Nephrology Authors: Edwin J Baldelomar Darya Morozov Leslie D Wilson Cihat Eldeniz Hongyu An Jennifer R Charlton Adam Bauer Shella D Keilholz Monica L Hulbert Kevin M Bennett Source Type: research
Efficacy of fat quantification methods used in MRI to distinguish between normal, benign, and malignant bone marrow pathologies in children
CONCLUSION: T1-SIV, OP/IP SR, and FF may potentially distinguish normal from pathological bone marrow. OP/IP SR and FF values detected malignant infiltration with high sensitivity and specificity in this study. However, only OP/IP SR may significantly differentiate benign and malignant bone marrow pathologies which needs to be confirmed in the future study with a larger patient population.PMID:38659300 | DOI:10.1177/02841851241247110 (Source: Acta Radiologica)
Source: Acta Radiologica - April 25, 2024 Category: Radiology Authors: Duygu Erkal Tonkaz Rifat Ozpar Mehmet Tonkaz Zeynep Yazici Source Type: research
Unravelling pituitary tumours in medically treated patients with acromegaly: the impact of systematic MRI reassessment
CONCLUSION: In most patients with pharmacologically treated acromegaly, we identified a certain or suspected pituitary tumor. These findings were more frequent compared to the routine MRI reports. Based on our results, patients will be considered for a change in long-term treatment modality.PMID:38659302 | DOI:10.1177/02841851241246107 (Source: Acta Radiologica)
Source: Acta Radiologica - April 25, 2024 Category: Radiology Authors: Shahriar Atai Martin Knudtzon Andersen Markus Wiedmann Daniel Dahlberg Kristin Astrid B Øystese Jens Bollerslev Geir Ringstad Ansgar Heck Source Type: research
Qualitative and Quantitative Magnetic Resonance Imaging in Bacterial Orbital Cellulitis
CONCLUSION: MRI remains an important imaging modality for evaluating complicated OC. However, qualitative features may lack accuracy and is not a reproducible means of analysis. Simple quantitative parameters, such as proptosis and EOM measurements, correlate with high-risk clinical features and may have utility in predicting clinical course.PMID:38661153 | DOI:10.1080/08820538.2024.2344029 (Source: Seminars in Ophthalmology)
Source: Seminars in Ophthalmology - April 25, 2024 Category: Opthalmology Authors: Terence Ang Jessica Y Tong Sandy Patel Valerie Juniat Saul Rajak Dinesh Selva Source Type: research
Anatomical and volumetric description of the guiana dolphin (Sotalia guianensis) brain from an ultra-high-field magnetic resonance imaging
In this study, we present for the first time a full anatomical description of the Guiana dolphin's brain based on high-resolution ultra-high-field magnetic resonance imaging, providing an exceptional level of brain anatomical details, and enriching our understanding of the species. Brain structures were labeled and volumetric measurements were delineated for many distinguishable structures, including the gray matter and white matter of the cerebral cortex, amygdala, hippocampus, superior and inferior colliculi, thalamus, corpus callosum, ventricles, brainstem and cerebellum. Additionally, we provide the surface anatomy of ...
Source: Brain Structure and Function - April 25, 2024 Category: Neuroscience Authors: Kamilla Avelino-de-Souza Heitor Mynssen Khallil Chaim Ashley N Parks Joana M P Ikeda Hayd ée Andrade Cunha Bruno Mota Nina Patzke Source Type: research
Resting state MRI reveals spontaneous physiological fluctuations in the kidney and tracks diabetic nephropathy in rats
Am J Physiol Renal Physiol. 2024 Apr 25. doi: 10.1152/ajprenal.00423.2023. Online ahead of print.ABSTRACTThe kidneys maintain fluid-electrolyte balance and excrete waste in the presence of constant fluctuations in plasma volume and systemic blood pressure. The kidneys perform these functions to control capillary perfusion and glomerular filtration by modulating the mechanisms of autoregulation. An effect of these modulations are spontaneous, natural fluctuations in nephron perfusion. Numerous other mechanisms can lead to fluctuations in perfusion and flow. The ability to monitor these spontaneous physiological fluctuations...
Source: American Journal of Physiology. Renal Physiology - April 25, 2024 Category: Physiology Authors: Edwin J Baldelomar Darya Morozov Leslie D Wilson Cihat Eldeniz Hongyu An Jennifer R Charlton Adam Bauer Shella D Keilholz Monica L Hulbert Kevin M Bennett Source Type: research
Inter-scanner super-resolution of 3D cine MRI using a transfer-learning network for MRgRT
In this study, we present a personalized super-resolution (psSR) network that incorporates transfer-learning to overcome the challenges in inter-scanner SR of 3D cine MRI.
Approach: Development of the proposed psSR network comprises two-stages: 1) a cohort-specific SR (csSR) network using clinical patient datasets, and 2) a psSR network using transfer-learning to target datasets. The csSR network was developed by training on breath-hold and respiratory-gated high-resolution (HR) 3D MRIs and their k-space down-sampled LR MRIs from 53 thoracoabdominal patients scanned at 1.5 T. The psSR network was developed through ...
Source: Physics in Medicine and Biology - April 25, 2024 Category: Physics Authors: Younghun Yoon Jaehee Chun Kendall Kiser Shanti Marasini Austen Nathaniel Curcuru H Michael Gach Jin Sung Kim Taeho Kim Source Type: research
Resting state MRI reveals spontaneous physiological fluctuations in the kidney and tracks diabetic nephropathy in rats
Am J Physiol Renal Physiol. 2024 Apr 25. doi: 10.1152/ajprenal.00423.2023. Online ahead of print.ABSTRACTThe kidneys maintain fluid-electrolyte balance and excrete waste in the presence of constant fluctuations in plasma volume and systemic blood pressure. The kidneys perform these functions to control capillary perfusion and glomerular filtration by modulating the mechanisms of autoregulation. An effect of these modulations are spontaneous, natural fluctuations in nephron perfusion. Numerous other mechanisms can lead to fluctuations in perfusion and flow. The ability to monitor these spontaneous physiological fluctuations...
Source: Am J Physiol Renal P... - April 25, 2024 Category: Urology & Nephrology Authors: Edwin J Baldelomar Darya Morozov Leslie D Wilson Cihat Eldeniz Hongyu An Jennifer R Charlton Adam Bauer Shella D Keilholz Monica L Hulbert Kevin M Bennett Source Type: research
