scholarly journals Three-dimensional imaging of living transplanted kidney vasculature by 3D color Doppler ultrasonography

2010 ◽  
Vol 4 (3) ◽  
pp. 403-411 ◽  
Author(s):  
Jinfang Xing ◽  
Lianfang Du
Keyword(s):  
Blood Flow ◽  
Renal Blood Flow ◽  
Color Doppler ◽  
Three Dimensional ◽  
Invasive Technique ◽  
Flow Signal ◽  
Non Invasive ◽  
Transplanted Kidney ◽  
Blood Flow Signal ◽  
3D Color Doppler

Abstract Background: It is of clinical importance to display the vasculature of transplanted kidney in three-dimensional (3D) and in non-invasive way. 3D color Doppler ultrasonographic imaging (3D-CDUI) is a non-invasive technique to display the 3D vasculature of living organs. Objective: Probe into characteristics of 3D vasculature of living transplanted kidney by 3D-CDUI, and evaluate the clinical value of 3D-CDUI on monitoring complications after operation of renal transplant. Methods: Nine patients who received allogeneic transplantation of kidney were monitored with 3D-CDUI. The instruments used included ACUSON Sequoia 512 and TomTec computer station of 3D-CDUI. Using magnetic positioning free-hand scanning, the 3D reconstruction and display of renal tissue structure and blood flow were performed off-line. Results: All patients underwent 3D-CDUI examinations without any side effect or complication. When acute rejection occurred, the 3D distribution change of renal blood flow signal could be observed clearly. During treatment of acute necrosis of renal tubules, changes of renal blood flow signal in 3D color Doppler images could be detected earlier compared with 2D color Doppler images. The position of embolized vassels could be diagnosed accurately by 3D-CDUI. Conclusion: The 3D-CDUI was helpful to improve diagnosis level of ultrasonography by monitoring complications after renal transplantation.

scholarly journals Evaluation of Blood Flow Signal in Small Hepatic Nodules by Color Doppler Ultrasonography

1996 ◽  
Vol 26 (5) ◽  
pp. 335-340 ◽  
Author(s):  
J. Furuse ◽  
M. Iwasaki ◽  
M. Yoshino ◽  
M. Konishi ◽  
N. Kawano ◽  
...  
Keyword(s):  
Blood Flow ◽  
Doppler Ultrasonography ◽  
Color Doppler ◽  
Color Doppler Ultrasonography ◽  
Flow Signal ◽  
Blood Flow Signal

scholarly journals Superb microvascular imaging technique in depicting vascularity in focal liver lesions: more hypervascular supply patterns were depicted in hepatocellular carcinoma

2019 ◽  
Vol 19 (1) ◽  
Author(s):  
Fan Yang ◽  
Jing Zhao ◽  
Chunwei Liu ◽  
Yiran Mao ◽  
Jie Mu ◽  
...  
Keyword(s):  
Blood Flow ◽  
Color Doppler ◽  
Microvascular Blood Flow ◽  
Focal Liver Lesions ◽  
Liver Lesions ◽  
Flow Signal ◽  
Blood Flow Signal ◽  
Superb Microvascular Imaging ◽  
Malignant Lesions ◽  
Microvascular Imaging

Abstract Purpose To investigate the capacity of Superb Microvascular Imaging (SMI) to detect microvascular details and to explore the different SMI features in various focal liver lesions (FLLs) and the correlation between SMI and microvessel density (MVD). Method: Eighty-three liver lesions were enrolled in our study, including 35 hepatocellular carcinomas (HCCs) and 48 non-HCCs. All patients underwent color Doppler flow imaging (CDFI) and SMI examination and were categorized into subgroups according to Adler semiquantitative grading (grade 0–3) or the microvascular morphologic patterns (pattern a-f). The correlation between SMI blood flow signal percentage and MVD was assessed. Results Compared with CDFI, SMI detected more high-level blood flow signals (grade 2–3) and more hypervascular supply patterns (pattern e-f) in HCCs (p < 0.05). Furthermore, more hypervascular supply patterns and fewer hypovascular supply patterns were detected in HCC compared with non-HCC (p < 0.05). Based on Adler’s grading or microvascular morphologic patterns, the areas under the receiver operating characteristic curve were 0.696 and 0.760 for SMI, 0.583 and 0.563 for CDFI. The modality of “SMI-microvascular morphologic pattern” showed the best diagnostic performance. There was significant correlation between MVD and the SMI blood flow signal percentage (vascular index, VI) in malignant lesions (r = 0.675, p < 0.05). Conclusion SMI was superior to CDFI in detecting microvascular blood flow signals. More hypervascular supply patterns were depicted in HCC than in non-HCC, suggesting a promising diagnostic value for SMI in the differentiation between HCC and non-HCC. Meanwhile, we were the first to demonstrate that SMI blood flow signal percentage (VI) was correlated with MVD in malignant lesions.

scholarly journals AB0425 PRELIMINARY EVALUATION OF THE SURAL NERVE USING 24-MHZ ULTRASOUND: A NEW APPROACH TO EVALUATE SURAL NEUROPATHY OF SJOGREN’S SYNDROME PATIENTS

2020 ◽  
Vol 79 (Suppl 1) ◽  
pp. 1512.2-1512
Author(s):  
F. Liu ◽  
J. Zhu ◽  
S. Zhang ◽  
D. LI ◽  
F. Liu ◽  
...  
Keyword(s):  
Blood Flow ◽  
Sjögren’S Syndrome ◽  
Sural Nerve ◽  
Sjögren's Syndrome ◽  
Sjogren’S Syndrome ◽  
Sjogren's Syndrome ◽  
Primary Sjögren’S Syndrome ◽  
Flow Signal ◽  
Blood Flow Signal ◽  
Sjögren‘S Syndrome

Background:Peripheral neuropathy is one of the most frequent extraglandular manifestations of primary Sjögren’s syndrome (pSS). The diagnosis of peripheral neuropathy complications of pSS is based primarily on careful neurologic examination and electrodiagnostic tests. The value of ultrasound in peripheral nerve has been recognized. However, little clinical researches have focused specifically on cutaneous nerve of pSS.Objectives:To evaluate the morphological changes of sural nerve in patients with pSS by high-frequency ultrasound.Methods:The prospective study subjects consisted of 31 consecutive pSS patients underwent sural nerve biopsy and 30 healthy volunteers as controls. The ultrasonic presentations of the fascicle, perineurium, epineurium of sural nerve were observed, and the cross-sectional areas (CSA) of the sural nerves was measured.Results:Among the 21 sural nerves confirmed by pathology, all showed the thickening of the perineurium and epineurium (Figure 1-2), and abnormal blood flow signal in perineurium or epineurium in 14 cases (Figure 2). The mean CSAs were (1.41±0.44) mm2 for the control group, and (1.58±0.48) mm2 for the case group (P>0.05). In addition, the abnormal blood flow signal in sural nerve correlated with disease activity.Conclusion:This study indicated that high-frequency ultrasound may be a valuable tool for evaluating cutaneous nerve neuropathy of Sjogren’s syndrome patients.References:[1]Vitali C, Bombardieri S, Jonsson R, Moutsopoulos HM, Alexander EL, Carsons SE, et al. Classification criteria for Sjögren’s syndrome: a revised version of the European criteria proposed by the American-European Consensus Group. Ann Rheum Dis. 2002;61(6):554-8.[2]Terrier B, Lacroix C, Guillevin L, Hatron PY, Dhote R, Maillot F, et al. Diagnostic and prognostic relevance of neuromuscular biopsy in primary Sjögren’s syndrome-related neuropathy. Arthritis Rheum.2007;57(8):1520-9.[3]McCoy SS, Baer AN. Neurological Complications of Sjögren’s Syndrome: Diagnosis and Management. Curr Treatm Opt Rheumatol. 2017;3(4):275-88.[4]Carvajal Alegria G, Guellec D, Devauchelle-Pensec V, Saraux A. Is there specific neurological disorders of primary Sjögren’s syndrome? Joint Bone Spine. 2015;82(2):86-9.Figure 1.Transverse sonograms of the sural nerve (arrows) V: indicates lesser saphenous veinFigure 2.Longitudinal sonograms of the sural nerve (arrows) The sonogram of sural nerve showed abnormal blood flow signal. V indicates lesser saphenous vein.Acknowledgments:This work was partly supported by National Natural Science Foundation of China (No. 81701712).Disclosure of Interests: :None declared

Modifying the Cosine Model for Nonstationary Blood Flow Signal Simulation

2003 ◽  
Vol 22 (3) ◽  
pp. 281-285 ◽  
Author(s):  
Sedigheh Ghofrani ◽  
Ahmad Ayatollahi ◽  
Mohammad Bagher Shamsollahi
Keyword(s):  
Blood Flow ◽  
Flow Signal ◽  
Blood Flow Signal ◽  
Signal Simulation

Transcutaneous hydrogen clearance-a new non-invasive technique for assessing blood flow in human skin

1994 ◽  
Vol 15 (1) ◽  
pp. 89-100 ◽  
Author(s):  
D K Harrison ◽  
R Abi Raad ◽  
D Newton ◽  
P T McCollum
Keyword(s):  
Blood Flow ◽  
Human Skin ◽  
Invasive Technique ◽  
Non Invasive ◽  
Hydrogen Clearance
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