Left ventricular remodeling index to predict ventricular tachyarrhythmia in dilated cardiomyopathy with ejection fraction < 35.

Objectives: To assess the left ventricular remodeling index (LVRI) for predicting ventricular tachyarrhythmia (VTA) in patients with dilated cardiomyopathy (DCM) with left ventricular ejection fraction (LVEF) < 35%.

Materials And Methods: In this retrospective single-center study, consecutive DCM patients with LVEF < 35% (n = 271) who underwent cardiac magnetic resonance (CMR) imaging were followed up. The study endpoint was VTA, including sudden cardiac death and major ventricular arrhythmias.

Focal spot diagnostic of pulsed planar anticathode accelerator with compressed streak imaging.

The spatial-temporal distribution of the focal spot is a key characteristic for evaluating a pulsed accelerator. However, the small number of frames and the low frame frequency limit the accurate analysis of the focal spot evolution process in a single shot. Compressed ultrafast photography (CUP) has recently demonstrated the ability of capturing 980 frames at 7 × 10 fps with a single camera snapshot.

Thyroid metastases from cervical carcinoma: unusual implications for clinicians-case report.

Background: Thyroid metastases from uterine cervical carcinoma are exceedingly rare. Imaging examination and pathological detection exert a pivotal function in distinguishing between benign and malignant thyroid tumors, as well as differentiating metastases from primary thyroid cancer.

Case Presentation: Here, we present two cases of uterine cervical cancer metastasizing to the thyroid gland, confirmed by postoperative histopathology at our hospital.

Machine Learning in Hypertrophic Cardiomyopathy: Nonlinear Model From Clinical and CMR Features Predicting Cardiovascular Events.

Background: The cumulative burden of hypertrophic cardiomyopathy (HCM) is significant, with a noteworthy percentage (10%-15%) of patients with HCM per year experiencing major adverse cardiovascular events (MACEs). A current risk stratification scheme for HCM had only limited accuracy in predicting sudden cardiac death (SCD) and failed to account for a broader spectrum of adverse cardiovascular events and cardiac magnetic resonance (CMR) parameters.

Objectives: This study sought to develop and evaluate a machine learning (ML) framework that integrates CMR imaging and clinical characteristics to predict MACEs in patients with HCM.

Systemic chemotherapy plus transarterial chemoembolization versus systemic chemotherapy alone for unresectable intrahepatic cholangiocarcinoma: a multicenter retrospective cohort study.

Purpose: Systemic chemotherapy (SYS) is the first-line treatment of unresectable intrahepatic cholangiocarcinoma (ICC). However, the survival benefit of SYS is still limited. This study compared the efficacy and safety of patients with unresectable ICC treated with transarterial chemoembolization (TACE) plus SYS to SYS alone.

Single-shot imaging with multiple frames through delaying optical images.

A single-shot imaging system with multiple frames has been developed, which can record sequential multiple frames by delaying multiple optical images with fiber bundles and then capturing the images with a single intensified camera. The observed optical object is imaged through four lenses onto the end faces of four sets of fiber bundles. These fiber bundles with different lengths can provide different delays for delivering optical images, which determine the inter-frame separation times.

Correlation between left ventricular fractal dimension and impaired strain assessed by cardiac MRI feature tracking in patients with left ventricular noncompaction and normal left ventricular ejection fraction.

Objectives: To investigate the correlation between the extent of excessive trabeculation assessed by fractal dimension (FD) and myocardial contractility assessed by cardiac MRI feature tracking in patients with left ventricular noncompaction (LVNC) and normal left ventricular ejection fraction (LVEF).

Methods: Forty-one LVNC patients with normal LVEF (≥ 50%) and 41 healthy controls were retrospectively included. All patients fulfilled three available diagnostic criteria on MRI.

Management of outpatient with totally implantable venous access Ports during the COVID-19 epidemic.

The purpose of this study was to explore the management experience of outpatient with totally implantable central venous access Ports (TIVAPs, Ports) during the epidemic, including whether the extension of the irrigation interval will affect the incidence of catheter occlusion, the reasons for the port removal rate, and the corresponding protective treatment strategies during the COVID-19 epidemic.We retrospectively analyzed the Ports evaluation and flushing procedure data between February 3, 2020 and April 3, 2020; the cases were divided into the normal group and delayed group according to the critical point of the maintenance interval of 28 days (4 weeks). We compared the incidence of catheter obstruction between the 2 groups, analyzed the causes of catheter removal events in the 2 groups, and proposed corresponding protective treatment recommendations.

Early detection of left atrial dysfunction assessed by CMR feature tracking in hypertensive patients.

Objectives: To evaluate whether early left atrial (LA) dysfunction in hypertension (HTN), with or without left ventricular hypertrophy (LVH), can be detected by cardiovascular magnetic resonance feature tracking (CMR-FT).

Methods: Seventy-three HTN patients and 29 healthy controls were retrospectively recruited. HTN patients were divided into the LVH (n = 29) and non-LVH group (n = 44).

Lobar location of lesions in computed tomography-guided lung biopsy is correlated with major pneumothorax: A STROBE-compliant retrospective study with 1452 cases.

Pneumothorax is a common complication in computed tomography (CT)-guided percutaneous lung biopsy (CPLB). Whether the lobar location of lesions contributes to the incidence of pneumothorax should be further clarified.A total of 1452 consecutive patients who underwent CPLB between January 2010 and March 2018 were retrospectively analyzed.

Retrospective Electrocardiography-Gated Real-Time Cardiac Cine MRI at 3T: Comparison with Conventional Segmented Cine MRI.

Objective: Segmented cardiac cine magnetic resonance imaging (MRI) is the gold standard for cardiac ventricular volumetric assessment. In patients with difficulty in breath-holding or arrhythmia, this technique may generate images with inadequate quality for diagnosis. Real-time cardiac cine MRI has been developed to address this limitation.

Development of an all-optical framing camera and its application on the Z-pinch.

An all-optical framing camera has been developed which measures the spatial profile of photons flux by utilizing a laser beam to probe the refractive index change in an indium phosphide semiconductor. This framing camera acquires two frames with the time resolution of about 1.5 ns and the inter frame separation time of about 13 ns by angularly multiplexing the probe beam on to the semiconductor.