Andrea Ferrero
Mayo Clinic
Imaging phantomOpticsPhysicsRadiologyPET-CTBiomedical engineeringIterative reconstructionArtificial intelligenceTomographyProjection (set theory)Materials scienceImage resolutionPositron emission tomographyScannerNuclear medicinePhoton counting detectorComputer visionMathematicsComputer scienceComputed tomographyResolution (electron density)MedicineDetector
Publications 39
#1Tim Large (IU: Indiana University)H-Index: 6
#2Charles U. Nottingham (IU: Indiana University)H-Index: 1
Last. Amy E. Krambeck (IU: Indiana University)H-Index: 53
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INTRODUCTION Currently, there are multiple intracorporeal lithotripters available for use in percutaneous nephrolithotomy (PCNL). This study aimed to evaluate the efficiency of two novel lithotripters; TrilogyTM and ShockPulse-SE. METHODS This is a prospective, multi-institutional, randomized trial comparing outcomes of PCNL using two novel lithotripters between February 2019 and June 2020. The study assessed objective measures of stone clearance time, stone clearance rate, device malfunction, s...
#1Kenneth A. Fetterly (Mayo Clinic)H-Index: 18
#2Andrea Ferrero (Mayo Clinic)H-Index: 8
Last. Nathaniel W. Taggart (Mayo Clinic)H-Index: 14
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Objectives The purpose of this study was to investigate the influence of simulated reduced-dose three-dimensional angiography (3DA) on the accuracy and precision of linear measurements derived from 3DA datasets. Background Three-dimensional angiography is performed during X-ray guided interventional procedures to aid diagnosis and inform treatment strategies for children and adults with congenital heart disease. However, 3DA contributes substantially to patient radiation dose and may lead to an ...
#1Payam Mohammadinejad (Mayo Clinic)H-Index: 18
#1Payam Mohammadinejad (Mayo Clinic)H-Index: 1
Last. Joel G. Fletcher (Mayo Clinic)H-Index: 84
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PURPOSE To evaluate the ability of a semi-automated radiomic analysis software in predicting the likelihood of spontaneous passage of urinary stones compared with manual measurements. METHODS Symptomatic patients visiting the emergency department with suspected stones in either kidney or ureters who underwent a CT scan were included. Patients were followed for up to 6 months for the outcome of a trial of passage. Maximum stone diameters in axial and coronal images were measured manually. Stone l...
#1Liqiang Ren (Mayo Clinic)
#2Andrea Ferrero (Mayo Clinic)H-Index: 8
Last. Christopher P. Favazza (Mayo Clinic)H-Index: 24
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Numerous advances in CT imaging have led to improved image guidance for interventional oncology procedures. However, image artifacts stemming from metal devices used during procedures have remained a persistent problem. Severe artifacts introduced by metallic treatment devices significantly degrade image quality in anatomical regions of interest and can substantially reduce the confidence of the interventional radiologist in accurate probe placement. The purpose of this work is to develop a fram...
#1Wei Zhou (Mayo Clinic)H-Index: 13
#2Gregory Michalak (Mayo Clinic)H-Index: 12
Last. Shuai Leng (Mayo Clinic)H-Index: 53
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In addition to low-energy-threshold images (TLIs), photon-counting detector (PCD) computed tomography (CT) can generate virtual monoenergetic images (VMIs) and iodine maps. Our study sought to determine the image type that maximizes iodine detectability. Adult abdominal phantoms with iodine inserts of various concentrations and lesion sizes were scanned on a PCD-CT system. TLIs, VMIs at 50 keV, and iodine maps were generated, and iodine contrast-to-noise ratio (CNR) was measured. A channelized H...
2 CitationsSource
#1Taylor R. Moen (Mayo Clinic)H-Index: 1
#2Andrea Ferrero (Mayo Clinic)H-Index: 8
Last. Cynthia H. McCollough (Mayo Clinic)H-Index: 76
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Rationale and Objectives Previous studies have demonstrated that quantitative relationships exist between stone fragility at lithotripsy and morphological features extracted from computed tomography (CT) scans. The goal of this study was to determine if variations in scanner model, patient size, radiation dose, or reconstruction parameters impact the accuracy of the prediction of renal stone fragility in an in vitro model. Materials and Methods Sixty-seven kidney stones were scanned using routin...
1 CitationsSource
#1Andrea Ferrero (Mayo Clinic)H-Index: 8
#2Naoki Takahashi (Mayo Clinic)H-Index: 62
Last. Cynthia H. McCollough (Mayo Clinic)H-Index: 76
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An estimated 4–5 million CT scans are performed in the USA every year to investigate nephrourological diseases such as urinary stones and renal masses. Despite the clinical benefits of CT imaging, concerns remain regarding the potential risks associated with exposure to ionizing radiation. To assess the potential risk of harmful biological effects from exposure to ionizing radiation, understanding the mechanisms by which radiation damage and repair occur is essential. Although radiation level an...
12 CitationsSource
#2Shuai LengH-Index: 53
Last. Andrea Ferrero (Mayo Clinic)H-Index: 8
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#1Andrea Ferrero (Mayo Clinic)H-Index: 8
#2Ralf Gutjahr (TUM: Technische Universität München)H-Index: 7
Last. Cynthia H. McCollough (Mayo Clinic)H-Index: 76
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Rational and Objectives This study aims to investigate the performance of a whole-body, photon-counting detector (PCD) computed tomography (CT) system in differentiating urinary stone composition. Materials and Methods Eighty-seven human urinary stones with pure mineral composition were placed in four anthropomorphic water phantoms (35–50 cm lateral dimension) and scanned on a PCD-CT system at 100, 120, and 140 kV. For each phantom size, tube current was selected to match CTDIvol (volume CT dose...
7 CitationsSource
#1Roy P. Marcus (Mayo Clinic)H-Index: 14
#1Roy P. Marcus (Mayo Clinic)H-Index: 2
Last. Cynthia H. McColloughH-Index: 76
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The evaluated photon-counting–detector CT system has the potential to improve the automatic characterization of small stones (≤3 mm).
17 CitationsSource