James Di Canzio

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PURPOSE To compare the accuracy and precision of orchidometer and ultrasonographic (US) measurements of testicular volume in a canine model. MATERIALS AND METHODS Volume measurements of 18 canine testes were obtained by using Prader and Rochester orchidometers. Testes were scanned with two linear-array US transducers with imaging frequencies of 6-13 MHz(More)
Results of immunoassays for which no positive standards are available are often expressed as endpoint titers. The endpoint titer is defined as the reciprocal of the highest analyte dilution that gives a reading above the cutoff. Unfortunately, there is no generally accepted rule for the determination of these cutoff values. In enzyme-linked immunosorbent(More)
iodothyronine, Thyrotropin, and Free Thyroxine, David Zurakowski, James Di Canzio, and Joseph A. Majzoub ( Departments of Biostatistics and Medicine and 2 Division of Endocrinology, Department of Medicine, Children’s Hospital, Harvard Medical School, Boston, MA 02115; * address correspondence to this author at: Department of Biostatistics, Children’s(More)
OBJECTIVE To evaluate trends in the frequency of anterior cruciate ligament (ACL) tears among adolescent soccer and basketball players resulting in reconstructive surgery, and to assess differences between female and male adolescent athletes. DESIGN A retrospective review of ACL reconstructive surgeries performed from 1992 through 1997 and annual(More)
SUMMARY The purpose of this study was to determine the normal ranges of scapholunate distance (SLD) applicable to children. Bone age radiographs of 85 children (36 boys, 49 girls) 6 to 14 years of age were used to establish the normal ranges. Repeated-measures analysis of variance revealed significant age and gender differences. Therefore, linear regression(More)
BACKGROUND Transmission of HIV via breast milk is a primary cause of pediatric HIV infection in developing countries. Reliable methods to detect breast milk viral load are important. OBJECTIVE To correlate the ability of the VERSANT HIV 3.0 (bDNA) assay to real-time (RT) TaqMan PCR in quantifying breast milk HIV-1 RNA. STUDY DESIGN Forty-six breast milk(More)
STATEMENT OF PROBLEM Dental impressions are commonly mailed to remote dental laboratories and can be subjected to extreme temperature changes; however, the effects of these temperature changes on the accuracy of elastomeric impression materials are unknown. PURPOSE This study evaluated the dimensional changes of polyether and polyvinyl siloxane impression(More)
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