Evaluation of the Effect of Comprehensive Nursing in Psychotherapy of Patients with Depression

The purpose of this study is to understand the emotional experience and psychological intervention of patients with depression and to explore the intervention effect of nursing intervention in the psychological treatment of patients with depression, so as to provide clinical nursing work recommendations and provide reference for the implementation of intervention methods for patients with depression. In addition, through case analysis, this paper combines controlled trials to study the effect of comprehensive nursing in the psychotherapy of patients with depression and combines mathematical statistics to process data. Through the analysis of controlled trials, it can be known that on the basis of conventional medication, interventional guidance for patients with depression through comprehensive nursing programs can play an ideal effect in improving the depression of patients. Moreover, it can effectively improve the patient’s quality of life after intervention and enhance the patient’s nursing satisfaction.

Three-dimensional image fusion of CTA and angiography for real-time guidance during neurointerventional procedures

AimTo evaluate the accuracy of three-dimensional (3D) images from two modalities—CT angiography (CTA) and digital subtraction angiography (DSA). Additionally, to explore the value of using preprocedural CTA for real-time guidance during neurointerventional procedures.Materials and methods25 patients with CTA-confirmed cerebral arterial lesions were enrolled. For 12 of these patients, 3D DSA images of the contrast medium-enhanced target vessel were acquired during the intervention and registered with the preprocedurally acquired CTA images for evaluation of the accuracy of image fusion, focusing on the target vessel and the lesion. For the other 13 patients, a low-dose non-contrast 3D angiographic scan was performed. The preprocedurally acquired CTA image was then registered with the coordinate of angiography and overlaid onto the live fluoroscopic image to provide interventional guidance.ResultsBased on visual inspection by two experienced physicians and quantitative evaluation, excellent accuracy in the 3D registration of the CTA and DSA was achieved for all 12 patients examined. Additionally, CTA could be used successfully to guide the interventional procedures, including both diagnostic DSA and stent treatment. The radiation dose and contrast medium use were compared with those used by conventional interventional procedures and both were found to be significantly reduced.Conclusions3D CTA and angiographic image fusion was approved as highly accurate for neurovasculature. Additionally, using the fusion technique to guide interventional procedures enhanced the workflow, and required much less radiation exposure and contrast medium use, thus helping to reduce potential risks and increase treatment safety.

An MRI Coil-Mounted Multi-Probe Robotic Positioner for Cryoablation

Cryoablation is a percutaneous procedure for treating solid tumors using needle-like instruments. This paper presents an interventional guidance device for faster and more accurate alignment and insertion of multiple probes during cryoablation performed in closed bore magnetic resonance (MR) imaging systems. The device is compact and is intended to be mounted onto a Siemens 110 mm MR loop coil. A cable-driven two-degrees-of-freedom spherical mechanism mimics the wrist motion as it orients the intervention probes about a remote center of motion located 15 mm above the skin. A carriage interfaces with the probes via a thumbscrew-fastened latch to passively release the probes from their tracks, enabling them to be inserted sequentially and freeing them to move with respiration. Small actuator modules containing piezoelectric encoder-based motors are designed to be snap-fit into the device for ease of replacement and sterilization. The robot MRI compatibility was validated with standard cryoablation imaging sequences in 3T MR environment, yielding a maximum of 4% signal to noise ratio during actuator motion. Bench-level device characterization demonstrated a maximum error of 0.78° in the carriage movement. Needle-tip placement experiments for multiple targets in gelatin were performed using our image-guided navigation software, measuring an average targeting error of 2.0 mm.