The Experts below are selected from a list of 4245 Experts worldwide ranked by ideXlab platform
Jungta Chen - One of the best experts on this subject based on the ideXlab platform.
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metanephric adenoma of the Kidney
Mid-Taiwan Journal of Medicine, 2003Co-Authors: Chirei Yang, Jungta ChenAbstract:A 68-year-old female presented with an incidental finding of a right renal mass. Her physical examination and biochemistry tests were normal. CT scan and magnetic resonance image revealed an isointense tumor with calcification measuring 3 cm 2 cm over the upper pole of the right Kidney. Angiography demonstrated a hypovascular tumor with some neovasculature. We suspected that the right renal tumor was either a renal cell carcinoma or a benign renal tumor, so the patient underwent radical nephrectomy. Histopathological examination confirmed metanephric adenoma. She was followed up for one year and there was no recurrence or metastasis.
Chirei Yang - One of the best experts on this subject based on the ideXlab platform.
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metanephric adenoma of the Kidney
Mid-Taiwan Journal of Medicine, 2003Co-Authors: Chirei Yang, Jungta ChenAbstract:A 68-year-old female presented with an incidental finding of a right renal mass. Her physical examination and biochemistry tests were normal. CT scan and magnetic resonance image revealed an isointense tumor with calcification measuring 3 cm 2 cm over the upper pole of the right Kidney. Angiography demonstrated a hypovascular tumor with some neovasculature. We suspected that the right renal tumor was either a renal cell carcinoma or a benign renal tumor, so the patient underwent radical nephrectomy. Histopathological examination confirmed metanephric adenoma. She was followed up for one year and there was no recurrence or metastasis.
Keiji Iizuka - One of the best experts on this subject based on the ideXlab platform.
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Thrombolytic therapy for traumatic unilateral renal artery thrombosis.
International Journal of Urology, 2006Co-Authors: Tsuyoshi Nakayama, Yasushi Murata, Toshikazu Okaneya, Yoshiaki Kinebuchi, Keiji IizukaAbstract:Abstract We report a case of traumatic unilateral renal artery thrombosis that was successfully treated by thrombolytic therapy. The patient was a 17-year-old woman, who had put her left upper abdomen between a wall and the handle of a ground roller when using it. A computed tomography scan with intravenous contrast showed a lack of contrast in the left Kidney. Angiography showed complete occlusion of the left renal artery, and the diagnosis was traumatic left renal artery thrombosis. Following Angiography, thrombolytic therapy was performed. Urokinase was administered into the left renal artery, and 360 000 units per 1.5 h was required. Thrombus disappeared and flow of left renal artery was observed. Recovery of left renal function was seen on renoscintigraphy. Surgical maneuvers for traumatic renal artery thrombosis are autotransplantation or thrombectomy generally, but we think that thrombolytic therapy following Angiography is a less invasive method and saves warm ischemic time.
David A Drew - One of the best experts on this subject based on the ideXlab platform.
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ferumoxytol enhanced ultrashort te mra and quantitative morphometry of the human Kidney vasculature
Abdominal Radiology, 2021Co-Authors: Liam Timms, Tianyi Zhou, Yue Lyu, Ju Qiao, Vishala Mishra, Rita Maria Lahoud, Gayatri Veeramani Jayaraman, Andrew S Allegretti, David A DrewAbstract:To evaluate the feasibility of Quantitative Ultrashort-Time-to-Echo Contrast-Enhanced (QUTE-CE) MRA using ferumoxytol as a contrast agent for abdominal Angiography in the Kidney. Four subjects underwent ferumoxytol-enhanced MRA with the 3D UTE Spiral VIBE WIP sequence at 3 T. Image quality metrics were quantified, specifically the blood Signal-to-Noise Ratio (SNR), blood-tissue Contrast-to-Noise Ratio (CNR) and Intraluminal Signal Heterogeneity (ISH) from both the aorta and inferior vena cava (IVC). Morphometric analysis of the vessels was performed using manual approach and semi-automatic approach using Vascular Modeling ToolKit (VMTK). Image quality and branching order were compared between QUTE-CE MRA and the Gadolinium (Gd) CEMRA reference image. QUTE-CE MRA provides a bright blood snapshot that delineates arteries and veins equally in the same scan. The maximum SNR and CNR values were 3,282 ± 1,218 and 1,295 ± 580, respectively – significantly higher than available literature values using other CEMRA techniques. QUTE-CE MRA had lower ISH and depicted higher vessel branching order (7th vs 3rd) within the Kidney compared to a standard dynamic clinical Gd CEMRA scan. Morphometric analysis yielded quantitative results for the total Kidney volume, total cyst volume and for diameters of the branching arterial network down to the 7th branch. Vessel curvature was significantly increased (p < 0.001) in the presence of a renal cyst compared to equivalent vessels in normal Kidney regions. QUTE-CE MRA is feasible for Kidney Angiography, providing greater detail of Kidney vasculature, enabling quantitative morphometric analysis of the abdominal and intra-renal vessels and yielding metrics relevant to vascular diseases while using a contrast agent ferumoxytol that is safe for CKD patients.
Gayatri Veeramani Jayaraman - One of the best experts on this subject based on the ideXlab platform.
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ferumoxytol enhanced ultrashort te mra and quantitative morphometry of the human Kidney vasculature
Abdominal Radiology, 2021Co-Authors: Liam Timms, Tianyi Zhou, Yue Lyu, Ju Qiao, Vishala Mishra, Rita Maria Lahoud, Gayatri Veeramani Jayaraman, Andrew S Allegretti, David A DrewAbstract:To evaluate the feasibility of Quantitative Ultrashort-Time-to-Echo Contrast-Enhanced (QUTE-CE) MRA using ferumoxytol as a contrast agent for abdominal Angiography in the Kidney. Four subjects underwent ferumoxytol-enhanced MRA with the 3D UTE Spiral VIBE WIP sequence at 3 T. Image quality metrics were quantified, specifically the blood Signal-to-Noise Ratio (SNR), blood-tissue Contrast-to-Noise Ratio (CNR) and Intraluminal Signal Heterogeneity (ISH) from both the aorta and inferior vena cava (IVC). Morphometric analysis of the vessels was performed using manual approach and semi-automatic approach using Vascular Modeling ToolKit (VMTK). Image quality and branching order were compared between QUTE-CE MRA and the Gadolinium (Gd) CEMRA reference image. QUTE-CE MRA provides a bright blood snapshot that delineates arteries and veins equally in the same scan. The maximum SNR and CNR values were 3,282 ± 1,218 and 1,295 ± 580, respectively – significantly higher than available literature values using other CEMRA techniques. QUTE-CE MRA had lower ISH and depicted higher vessel branching order (7th vs 3rd) within the Kidney compared to a standard dynamic clinical Gd CEMRA scan. Morphometric analysis yielded quantitative results for the total Kidney volume, total cyst volume and for diameters of the branching arterial network down to the 7th branch. Vessel curvature was significantly increased (p < 0.001) in the presence of a renal cyst compared to equivalent vessels in normal Kidney regions. QUTE-CE MRA is feasible for Kidney Angiography, providing greater detail of Kidney vasculature, enabling quantitative morphometric analysis of the abdominal and intra-renal vessels and yielding metrics relevant to vascular diseases while using a contrast agent ferumoxytol that is safe for CKD patients.
