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John A. Shepherd
University of Hawaii at Manoa
RadiologyEndocrinologyBone mineralBreast cancerMedicine
394Publications
51H-index
8,917Citations
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Publications 386
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#1S. Lani Park (SC: University of Southern California)H-Index: 6
#2Yuqing Li (UCSF: University of California, San Francisco)H-Index: 1
Last. Kristine R. Monroe (SC: University of Southern California)H-Index: 30
view all 23 authors...
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#1Joseph M. Kindler (Children's Hospital of Philadelphia)H-Index: 1
#2Heidi J. Kalkwarf (Cincinnati Children's Hospital Medical Center)H-Index: 41
Last. Babette S. Zemel (UPenn: University of Pennsylvania)H-Index: 61
view all 9 authors...
Context The ultradistal (UD) radius is rich in trabecular bone and is easily measured by dual energy X-ray absorptiometry (DXA). UD radius areal bone mineral density (aBMD) may help identify trabecular bone deficits, but reference data are needed for research and clinical interpretation of this measure. Objective We developed age-, sex-, and population ancestry-specific reference ranges for UD radius aBMD assessed by DXA and calculated Z-scores. We examined tracking of UD radius aBMD Z-scores ov...
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#1Lisa Kotowski (SFSU: San Francisco State University)
#2B. Neuhauser (SFSU: San Francisco State University)H-Index: 3
Last. John A. Shepherd (UH: University of Hawaii)H-Index: 51
view all 4 authors...
PURPOSE: Provide a proof of concept for the potential of using a novel RF resonant cavity device for accurately and repeatedly measuring fat and fat free masses in phantom infants. MATERIALS & METHODS: Design, construct, and characterize an RF resonant cavity with dimensions compatible to holding an infant. The cavity was characterized using spherical phantoms of 0%fat, 50% fat, and 100% fat to empirically calibrate shifts in resonant frequency. The phantoms were constructed using emulsions of b...
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#1Phoenix HwaungH-Index: 4
#2Moonseong HeoH-Index: 58
Last. Steven B. HeymsfieldH-Index: 124
view all 6 authors...
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#1Benjamin C. Fu (Harvard University)H-Index: 6
#1Benjamin C Fu (Harvard University)H-Index: 1
Last. Loic Le Marchand (U.H.: University of Hawaii at Manoa)H-Index: 97
view all 12 authors...
BACKGROUND: Trimethylamine N-oxide (TMAO), a compound derived from diet and metabolism by the gut microbiome, has been associated with several chronic diseases, although the mechanisms of action are not well understood and few human studies have investigated microbes involved in its production. OBJECTIVES: Our study aims were 1) to investigate associations of TMAO and its precursors (choline, carnitine, and betaine) with inflammatory and cardiometabolic risk biomarkers; and 2) to identify fecal ...
4 CitationsSource
#1Samantha Kennedy (LSU: Louisiana State University)H-Index: 4
#2Phoenix Hwaung (LSU: Louisiana State University)H-Index: 4
Last. Steven B. Heymsfield (LSU: Louisiana State University)H-Index: 124
view all 8 authors...
Three-dimensional optical (3DO) imaging systems that rapidly and accurately provide body shape and composition information are increasingly available in research and clinical settings. Recently, relatively low-cost and space efficient 3DO systems with the ability to report and track individual assessments were introduced to the consumer market for home use. This study critically evaluated the first 3DO imaging device intended for personal operation, the Naked Body Scanner (NBS), against referenc...
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#1Chloe E. Panizza (UH: University of Hawaii)H-Index: 2
#2Michael C Wong (UH: University of Hawaii)H-Index: 2
Last. Carol J. Boushey (UH: University of Hawaii)H-Index: 37
view all 12 authors...
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#1Lambert T. Leong (U.H.: University of Hawaii at Manoa)
#2Maryellen L. Giger (U of C: University of Chicago)H-Index: 73
Last. John A. Shepherd (UH: University of Hawaii)H-Index: 51
view all 9 authors...
Our purpose was to determine if the lipid, water, and protein lesion composition (3CB), combined with computer-aided detection (CAD) had higher biopsy malignancy specificity than CAD alone. High and low-kVp full-field digital 3CB mammograms were acquired on women with suspicious mammographic lesions (BIRADS 4) and that were to undergo biopsy. Radiologists delineated 673 lesions (98 invasive ductal cancers (IDC), 60 ductal carcinomas in situ (DCIS), 103 fibroadenomata (FA), and 412 benign (BN)) o...
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#1Jami Aya Fukui (UH: University of Hawaii)H-Index: 1
#2Shirley Cheng (UH: University of Hawaii)
view all 6 authors...
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