Publications by authors named "Matthew Bickford"
Purpose Of Review: In this article, we review the impact of the COVID-19 pandemic on refractive surgery.
Recent Findings: COVID-19 infection frequently causes eye symptoms, most commonly conjunctivitis or mild irritation. While virus can be detected in tears of symptomatic patients, the risk of transmission via this route appears low.
Purpose: To evaluate the indications and associated risk factors for unplanned returns to the operating room within 90 days of pediatric cataract-related surgery.
Methods: The medical records patients undergoing either cataract extraction or secondary intraocular lens (IOL) implantation at a single center from 1991 to 2018 were reviewed retrospectively.
Results: A total of 1,392 eyes of 989 patients were included, with 48 unplanned reoperations in 46 eyes of 43 patients, yielding a reoperation rate of 3.
Objectives: The aim of this study was to compare 2 advanced robotic angiography systems for real-time image guidance in terms of radiation dose and image quality (IQ) during conventional transarterial chemoembolization (C-TACE) of hepatic malignant tumors.
Materials And Methods: One hundred six patients (57 women/49 men; mean age, 60 ± 11 years) who had undergone C-TACE using 2 generations of robotic angiography platforms for image guidance were included in this retrospective study. Patients were divided into 2 groups (n = 53, respectively): group 1 (first generation) and group 2 (second generation).
Purpose: To investigate the effect of an iterative beam-hardening correction algorithm (iBHC) on artifact reduction and image quality in coronary CT angiography (cCTA) with low tube voltage.
Material And Methods: Thirty-six patients (17 male, mean age, 57.3 ± 14.
Rationale And Objectives: To analyze the accuracy of radiological diagnosis in MRI and CT studies of salivary gland tumors depending on the radiologist's experience.
Materials And Methods: Three radiologists with differing experience (R1 > 20, R2 > 11, and R3 > 7 years, respectively) retrospectively reviewed 128 cases (116 MRI, 12 CT studies) with suspected salivary gland tumors regarding dignity and classification using histopathology as a reference standard. Sensitivity, specificity, positive/negative predictive value and inter-observer agreement (using Cohen's κ) were calculated to compare diagnostic performance.
Purpose: To use absolute pretreatment apparent diffusion coefficients (ADC) derived from diffusion-weighted MR imaging (DWI) to predict response to repetitive cTACE for unresectable liver metastases of colorectal carcinoma (CRLM) at 1 and 3 months after start of treatment.
Materials And Methods: Fifty-five metastases in 34 patients were examined with DWI prior to treatment and 1 month after initial cTACE. Treatment was performed in 4-week intervals.
Objective: Pulmonary CT angiography (CTA) is the imaging modality of choice in suspected acute pulmonary embolism (PE). Current pulmonary CTA techniques involve ever lower doses of contrast medium and radiation along with advanced postprocessing applications to enhance image quality, diagnostic accuracy, and provide added value in patient management. The objective of this article is to summarize these current developments and discuss the appropriate use of state-of-the-art pulmonary CTA.
View Article and Find Full Text PDFObjectives: This study aimed to intra-individually and inter-individually compare image quality, radiation dose, and diagnostic accuracy of dual-source dual-energy computed tomography pulmonary angiography (CTPA) protocols in patients with suspected pulmonary embolism (PE).
Methods: Thirty-three patients with suspected PE underwent initial and follow-up dual-energy CTPA at 80/Sn140 kVp (group A) or 100/Sn140 kVp (group B), which were assigned based on tube voltages. Subjective and objective CTPA image quality and lung perfusion map image quality were evaluated.