Christopher P. Favazza
Mayo Clinic
Imaging phantomOpticsBiomedical engineeringArtificial intelligenceNanoparticleNanotechnologyChemistryNanostructureThin filmMaterials scienceImage resolutionInstabilityScannerNuclear medicineComputer visionComputer scienceNanoscopic scaleOptoelectronicsLaserImage qualityMedicineObserver (quantum physics)Ultrasonic sensorDewetting
92Publications
24H-index
2,659Citations
Publications 94
Newest
#1Daniel Gomez-Cardona (Gundersen Health System)H-Index: 2
#1Daniel Gomez-Cardona (Gundersen Health System)H-Index: 5
Last. Kenneth A. Fetterly (Mayo Clinic)H-Index: 18
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PURPOSE Channelized Hotelling observer (CHO) models have been implemented to assess imaging performance in x-ray angiography systems. While current methods are appropriate for assessing unprocessed images of moving test objects upon uniform-exposure backgrounds, they are inadequate for assessing conditions which more appropriately mimic clinical imaging conditions including the combination of moving test objects, complex anthropomorphic backgrounds, and image processing. In support of this broad...
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#1Aiming Lu (Mayo Clinic)H-Index: 1
#2Christopher P. Favazza (Mayo Clinic)H-Index: 24
Last. Krzysztof R. Gorny (Mayo Clinic)H-Index: 21
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PURPOSE To investigate cryoneedle heating risks during magnetic resonance (MR)-guided cryoablation and potential strategies to mitigate these risks. MATERIALS AND METHODS Ex vivo experiments were performed on a 1.5-Tesla (T) MR scanner using an MR conditional cryoablation system on porcine tissue phantoms. Cryoneedles were placed inside the tissue phantom either with or without an angiocatheter. Typical cryoneedle geometric configurations (including gas supply line) encountered in clinical proce...
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#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...
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#1Sadia Choudhery (Mayo Clinic)H-Index: 5
#2Daniel Gomez-Cardona (Mayo Clinic)H-Index: 2
Last. Judy C. Boughey (Mayo Clinic)H-Index: 55
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Rationale and Objectives There are limited data on pretreatment imaging features that can predict response to neoadjuvant chemotherapy (NAC). To extract volumetric pretreatment MRI radiomics features and assess corresponding associations with breast cancer molecular subtypes, pathological complete response (pCR), and residual cancer burden (RCB) in patients treated with NAC. Materials and Methods In this IRB-approved study, clinical and pretreatment MRI data from patients with biopsy-proven brea...
6 CitationsSource
#1Derek J. Lomas (Mayo Clinic)H-Index: 4
#2David A. Woodrum (Mayo Clinic)H-Index: 31
Last. Lance A. Mynderse (Mayo Clinic)H-Index: 29
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Purpose To describe safety, efficacy, and added oncologic margin of saline displacement of the rectal wall during MRI-guided cryoablation of primary and recurrent prostate cancer.
2 CitationsSource
#1Aiming Lu (Mayo Clinic)H-Index: 2
#1Aiming Lu (Mayo Clinic)H-Index: 2
Last. Krzysztof R. Gorny (Mayo Clinic)H-Index: 21
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Abstract MRI-guided microwave ablation (MWA) is a minimally invasive treatment for localized cancer. MR thermometry has been shown to be able to provide vital information for monitoring the procedure in real-time. However, MRI during active MWA can suffer from image quality degradation due to intermittent electromagnetic interference (EMI). A novel approach to correct for EMI-contaminated images is presented here to improve MR thermometry during clinical hepatic MWA. The method was applied to MR...
1 CitationsSource
#1Krzysztof R. Gorny (Mayo Clinic)H-Index: 21
#2Christopher P. Favazza (Mayo Clinic)H-Index: 24
Last. David A. Woodrum (Mayo Clinic)H-Index: 31
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Abstract Practical non-invasive equipment modifications and effective acquisition methods to achieve robust and reliable real-time MR thermometry for monitoring of clinical hepatic microwave ablations were implemented. These included selection of the microwave generator location (inside versus outside the MR scan room), the number of radiofrequency chokes added to the microwave generator’s coaxial lines, and the use of copper wool to maximize their electrical grounding. Signal-to-noise ratio (SN...
6 CitationsSource
#1Wei Zhou (Mayo Clinic)
#2Christopher P. Favazza (Mayo Clinic)H-Index: 24
Last. Christine U. Lee (Mayo Clinic)H-Index: 10
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#1Daniel Gomez-Cardona (Mayo Clinic)H-Index: 2
#1Daniel Gomez-Cardona (Mayo Clinic)H-Index: 5
Last. Kenneth A. FetterlyH-Index: 18
view all 5 authors...
Multiple efforts have been made in x-ray angiography to transition from traditional image quality metrics to mathematical observer models. Recent works have successfully implemented the channelized Hotelling observer (CHO) model for x-ray angiography systems. However, in these works the channel selection process is ambiguous and limits to identifying a range of frequencies and other channel parameters that are believed to represent the most relevant features of the imaging tasks. This channel se...
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