This study aims to assess the prefrontal functional connectivity in elderly subjects with hypertension during resting state using wavelet coherence analysis of changes tissue oxyhaemoglobin concentrations (Δ[HbO2]) signals measured by near-infrared spectroscopy (NIRS). Continuous recordings NIRS were obtained from left and right lobes 24 (age: 70.7 ± 8.4 years) 26 normotensive 70.6 7.9 state. The between oscillations four frequency intervals (I, 0.4 Hz 2 Hz; II, 0.15 III, 0.05 IV, 0.02 Hz)...

Segmenting portal vein (PV) and hepatic (HV) from magnetic resonance imaging (MRI) scans is important for tumor surgery. Compared with single phase-based methods, multiple phases-based methods have better scalability in distinguishing HV PV by exploiting multi-phase information. However, these just coarsely extract different phase images. In this paper, we propose a unified framework to automatically robustly segment 3D MR images, which considers both the change appearance caused vascular...

Anatomically diffused tissues (ADTs) refer to soft containing many anatomical regions that are spatially dispersed and structurally irregular. In magnetic resonance images, ADTs exhibit blurred morphology heterogeneous texture, making the accurate extraction of their 3D anatomy challenging. Center-free fuzzy C-means (FCM) can effectively partition nonlinear or nonspherical clusters, providing a promising scheme for ADT segmentation. It solves uncertainty arising from unreliable center...

This study aims to assess the phase relationship of prefrontal tissue oxyhemoglobin oscillations using wavelet coherence analysis cerebral Delta [HbO₂] signals in infarction (CI) patients during resting state.Continuous recordings near-infrared spectroscopy were obtained from left and right lobes 21 subjects with CI (Group CI, age: 76.6 ± 8.5 yr) healthy elderly Healthy, 69.0 7.4 state. The Group was further divide into two groups: hypertension without hypertension. synchronization between...

Microwave ablation (MWA) has been proven as a promising method to treat solid tumors.This study aims evaluate the efficacy and safety of ultrasound (US)-guided MWA for treating adrenal metastasis explore factors affecting survival.This was retrospective performed on patients treated at our department.A total 43 with (22 hepatocellular carcinoma, eight renal cell five non-small lung cancer, four colorectal three liposarcoma, one malignant fibrous histiocytoma) were enrolled. All department...

This study aims to assess the prefrontal functional connectivity using wavelet coherence analysis of cerebral tissue oxyhaemoglobin concentrations (Delta [HbO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> ]) signals in subjects with infarction(CI) during resting state. Continuous recordings near-infrared spectroscopy (NIRS) were gained from right and left lobe 15 elderly CI (age: 75.1 ± 9.2 years) 18 healthy 69.9 7.3 The between Delta...

Objective: To determine the cause and high-risk factors for development of intestinal fistulas (IFs) after ultrasound-guided microwave ablation (MA) abdominopelvic lesions, to identify effective prophylactic therapeutic actions. Methods: Clinical data were collected from patients with an IF MA lesions in our hospital January 1, 2010 December 31, 2018. The cause, diagnosis, treatment IFs these analyzed. Results: Among 8,969 who underwent eight developed MA, Seven discharged being cured one...

The article is aimed at studying the relationship between arterial blood pressure (ABP) and cerebral oxygen hemoglobin signals to change of posture in healthy elderly subjects using wavelet phase coherence (WPCO) analysis. ABP HbO <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</inf> (NIRS) 35 (young group: 19, Age: 24.9; 16, 68.9) were acquired from experimental apparatus with continuous recordings. We assess Delta [HbO ] WPCO six frequency...

Purpose The liver segments divided by Couinaud classification method are used to understand the functional anatomy of liver, which is significant in hepatic resection surgery. In method, each third‐order branch portal vein (PV) defines supplied territory a corresponding segment. However, accuracies reconstruction and PV affected complicated structure vein. purpose this paper develop separation that can accurately extract segments. Methods paper, multiple feature‐based proposed obtain Because...

Microwave ablation (MWA) is a minimally invasive procedure for the treatment of liver tumor. Accumulating clinical evidence has considered minimal ablative margin (MAM) as significant predictor local tumor progression (LTP). In practice, MAM assessment typically carried out through image registration pre- and post-MWA images. However, this process faces two main challenges: non-homologous match between coagulation with inconsistent appearance, tissue shrinkage caused by thermal dehydration....

Recent clinical research shows that the local treatment of primary tumor can improve cancer-specific-survival and overall-survival for metastatic prostate cancer patients. Differ with lymph node metastasis, there is not enough high-level randomized controlled trial data to decide whether patients bone metastasis will be benefited from treatment, meanwhile, it also needs figure out factors influencing prognosis How efficiently combine multi system a current hot spot as well. Key words:...

Objective To evaluate the safety and clinical efficacy of three-dimensional (3D) visualization preoperative planning system assisted ultrasound-guided percutaneous microwave ablation for treating single large hepatocellular carcinoma (HCC). Methods Forty patients with a HCC (diameter ≥ 5 cm) from May 2015 to August 2017 were included, whom 21 received without 3D assistance 19 treated under visualization. Survival recurrence recorded compared between two groups. Results The...

Objective To evaluate the efficacy of ultrasound-guided radioactive seed implantation in treatment recurrent hepatocellular carcinoma. Methods Image reconstruction was performed 31 patients with carcinoma. Preoperative planning carried out by using system (TPS). Particles were placed according to plan under guidance real-time ultrasound during operation. Postoperative enhanced imaging performed, and radiodosimetric evaluation curative effect TPS. The indicators evaluated included...

Intrahepatic vascular separation on contrast-enhanced Magnetic Resonance (MR) images is indispensable for the hepatic tumor surgery. This paper presents an unsupervised frame-work based structural saliency automatically separating portal vein (PV) and (HV) from multi-phase MR images. In our work, we propose a new multi-scale filter statistics shape information in region of interest, called SSIROI, with which connectivity 3D can be guaranteed. Experiments are conducted clinical images,...