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Chang E, Ali R, Seibert J, Berkman ND. Interventions to Improve Outcomes for High-Need, High-Cost Patients: A Systematic Review and Meta-Analysis. J Gen Intern Med 2023; 38:185-194. [PMID: 36220944 PMCID: PMC9849489 DOI: 10.1007/s11606-022-07809-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Accepted: 09/13/2022] [Indexed: 01/22/2023]
Abstract
BACKGROUND Chronic disease patients who are the greatest users of healthcare services are often referred to as high-need, high-cost (HNHC). Payers, providers, and policymakers in the United States are interested in identifying interventions that can modify or reduce preventable healthcare use among these patients, without adversely impacting their quality of care and health. We systematically reviewed the evidence on the effectiveness of complex interventions designed to change the healthcare of HNHC patients, modifying cost and utilization, as well as clinical/functional, and social risk factor outcomes. METHODS We searched 8 electronic databases (January 2000 to March 2021) and selected non-profit organization and government agency websites for randomized controlled trials and observational studies with comparison groups that targeted HNHC patients. Two investigators independently screened each study and abstracted data into structured forms. Study quality was assessed using standard risk of bias tools. Random-effects meta-analysis was conducted for outcomes reported by at least 3 comparable samples. RESULTS Forty studies met our inclusion criteria. Interventions were heterogenous and classified into 7 categories, reflecting the predominant service location/modality (home, primary care, ambulatory intensive caring unit [aICU], emergency department [ED], community, telephonic/mail, and system-level). Home-, primary care-, and ED-based interventions resulted in reductions in high-cost healthcare services (ED and hospital use). ED-based interventions also resulted in greater use of primary care. Primary care- and ED-based interventions reduced costs. System-level transformation interventions did not reduce costs. DISCUSSION We found limited evidence of intervention effectiveness in relation to cost and use, and additional evidence is needed to strengthen our confidence in the findings. Few studies reported patient clinical/functional or social risk factor outcomes (e.g., homelessness) or sufficient details for determining why individual interventions work, for whom, and when. Future evaluations could provide additional insights, by including intermediate process outcomes and patients' experiences, in assessing the impact of these complex interventions. PROSPERO REGISTRATION NUMBER CRD42020161179.
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Affiliation(s)
- Eva Chang
- RTI-University of North Carolina Evidence-Based Practice Center, Research Triangle Park, NC, USA.
- RTI International, Research Triangle Park, NC, USA.
- Advocate Aurora Health, Advocate Aurora Research Institute, Downers Grove, IL, USA.
| | - Rania Ali
- RTI-University of North Carolina Evidence-Based Practice Center, Research Triangle Park, NC, USA
- RTI International, Research Triangle Park, NC, USA
| | - Julie Seibert
- RTI-University of North Carolina Evidence-Based Practice Center, Research Triangle Park, NC, USA
- RTI International, Research Triangle Park, NC, USA
- North Carolina Department of Health and Human Services, Division of Mental Health Developmental Disabilities and Substance Abuse Services, Raleigh, NC, USA
| | - Nancy D Berkman
- RTI-University of North Carolina Evidence-Based Practice Center, Research Triangle Park, NC, USA
- RTI International, Research Triangle Park, NC, USA
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Abstract
BACKGROUND Accurately identifying high-need, high-cost (HNHC) patients to reduce their preventable or modifiable health care use for their chronic conditions is a priority and a challenge for U.S. policymakers, health care delivery systems, and payers. PURPOSE To identify characteristics and criteria to distinguish HNHC patients. DATA SOURCES Searches of multiple databases and gray literature from 1 January 2000 to 22 January 2022. STUDY SELECTION English-language studies of characteristics and criteria to identify HNHC adult patients, defined as those with high use (emergency department, inpatient, or total services) or high cost. DATA EXTRACTION Independent, dual-review extraction and quality assessment. DATA SYNTHESIS The review included 64 studies comprising multivariate exposure studies (n = 47), cluster analyses (n = 11), and qualitative studies (n = 6). A National Academy of Medicine (NAM) taxonomy was an initial "best-fit" framework for organizing the synthesis of the findings. Patient characteristics associated with being HNHC included number and severity of comorbid conditions and having chronic clinical conditions, particularly heart disease, chronic kidney disease, chronic lung disease, diabetes, cancer, and hypertension. Patients' risk for being HNHC was often amplified by behavioral health conditions and social risk factors. The reviewers revised the NAM taxonomy to create a final framework, adding chronic pain and prior patterns of high health care use as characteristics associated with an increased risk for being HNHC. LIMITATION Little evidence distinguished potentially preventable or modifiable health care use from overall use. CONCLUSION A combination of characteristics can be useful for identifying HNHC patients. Because of the complexity of their conditions and circumstances, improving their quality of care will likely also require an individualized assessment of care needs and availability of support services. PRIMARY FUNDING SOURCE Agency for Healthcare Research and Quality. (PROSPERO: CRD42020161179).
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Affiliation(s)
- Nancy D Berkman
- RTI-University of North Carolina Evidence-based Practice Center and RTI International, Research Triangle Park, North Carolina (N.D.B., R.A.)
| | - Eva Chang
- RTI-University of North Carolina Evidence-based Practice Center and RTI International, Research Triangle Park, North Carolina, and Advocate Aurora Health, Advocate Aurora Research Institute, Downers Grove, Illinois (E.C.)
| | - Julie Seibert
- RTI-University of North Carolina Evidence-based Practice Center and RTI International, Research Triangle Park, and North Carolina Department of Health and Human Services, Division of Mental Health, Developmental Disability and Substance Abuse Services, Raleigh, North Carolina (J.S.)
| | - Rania Ali
- RTI-University of North Carolina Evidence-based Practice Center and RTI International, Research Triangle Park, North Carolina (N.D.B., R.A.)
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LeMasters K, Cox ME, Fliss M, Seibert J, Brown C, Proescholdbell S. Mental health emergency department visits: An exploration of case definitions in North Carolina. Am J Emerg Med 2022; 57:103-106. [DOI: 10.1016/j.ajem.2022.04.053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 04/08/2022] [Accepted: 04/29/2022] [Indexed: 10/18/2022] Open
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4
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Mark TL, Seibert J, Dowd WN, Zuckerbraun SM, Popovic JR, Barch DH. Development, Testing, and Dissemination of a Public-Facing Tool to Help Consumers Find Higher-Quality Addiction Treatment. Psychiatr Serv 2022; 73:293-298. [PMID: 34281358 DOI: 10.1176/appi.ps.202000879] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVE The authors aimed to describe the development and testing of quality measures included in a public-facing addiction treatment facility search engine. METHODS An addiction treatment facility survey was created that queried providers in six U.S. states about whether they offered the services and used the processes identified by federal agencies and nonprofit organizations as signs of higher-quality addiction treatment. Four insurance claims-based quality measures were created to capture the percentage of a provider's patients with opioid use disorder receiving opioid use disorder medications, who filled prescriptions for such medication for at least 180 days, who received follow-up care after treatment for substance use disorder in inpatient or residential settings, or who had a substance use disorder-related hospitalization or emergency department visit. A patient experience-of-care survey captured patients' perceptions of the quality of the addiction treatment. The project was undertaken from November 2018 through July 2020. RESULTS The authors tested the measures by using 1,245 facility surveys, 7,970 patients' experience-of-care surveys, and four claims-based measures submitted by 129, 136, 283, and 408 addiction treatment providers. Statistical testing demonstrated that the quality measures were reliable and valid. The quality measure scores varied among providers, capturing a wide performance range. A public website containing quality measures launched in July 2020 in the six states and has been accessed by thousands of consumers. CONCLUSIONS This study developed valid, reliable, and useful addiction treatment quality measures. Dissemination of these measures may help consumers select among providers and help providers, policy makers, and payers improve quality.
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Affiliation(s)
- Tami L Mark
- RTI International, Rockville, Maryland (Mark), Research Triangle Park, North Carolina (Seibert, Dowd), Chicago (Zuckerbraun), and Waltham, Massachusetts (Popovic, Barch)
| | - Julie Seibert
- RTI International, Rockville, Maryland (Mark), Research Triangle Park, North Carolina (Seibert, Dowd), Chicago (Zuckerbraun), and Waltham, Massachusetts (Popovic, Barch)
| | - William N Dowd
- RTI International, Rockville, Maryland (Mark), Research Triangle Park, North Carolina (Seibert, Dowd), Chicago (Zuckerbraun), and Waltham, Massachusetts (Popovic, Barch)
| | - Sara M Zuckerbraun
- RTI International, Rockville, Maryland (Mark), Research Triangle Park, North Carolina (Seibert, Dowd), Chicago (Zuckerbraun), and Waltham, Massachusetts (Popovic, Barch)
| | - Jennifer R Popovic
- RTI International, Rockville, Maryland (Mark), Research Triangle Park, North Carolina (Seibert, Dowd), Chicago (Zuckerbraun), and Waltham, Massachusetts (Popovic, Barch)
| | - Daniel H Barch
- RTI International, Rockville, Maryland (Mark), Research Triangle Park, North Carolina (Seibert, Dowd), Chicago (Zuckerbraun), and Waltham, Massachusetts (Popovic, Barch)
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Matsuda F, Lowry L, Suzuki A, Aguilar Fáundez M, Arnold K, Barron D, Bianchini F, Cheung K, Chinone Y, Elleflot T, Fabbian G, Goeckner-Wald N, Hasegawa M, Kaneko D, Katayama N, Keating B, Lee AT, Navaroli M, Nishino H, Paar H, Puglisi G, Richards PL, Seibert J, Siritanasak P, Tajima O, Takatori S, Tsai C, Westbrook B. The POLARBEAR Fourier transform spectrometer calibrator and spectroscopic characterization of the POLARBEAR instrument. Rev Sci Instrum 2019; 90:115115. [PMID: 31779409 DOI: 10.1063/1.5095160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Accepted: 11/01/2019] [Indexed: 06/10/2023]
Abstract
We describe the Fourier Transform Spectrometer (FTS) used for in-field testing of the POLARBEAR receiver, an experiment located in the Atacama Desert of Chile which measures the cosmic microwave background (CMB) polarization. The POLARBEAR-FTS (PB-FTS) is a Martin-Puplett interferometer designed to couple to the Huan Tran Telescope (HTT) on which the POLARBEAR receiver is installed. The PB-FTS measured the spectral response of the POLARBEAR receiver with signal-to-noise ratio >20 for ∼69% of the focal plane detectors due to three features: a high throughput of 15.1 sr cm2, optimized optical coupling to the POLARBEAR optics using a custom designed output parabolic mirror, and a continuously modulated output polarizer. The PB-FTS parabolic mirror is designed to mimic the shape of the 2.5 m-diameter HTT primary reflector, which allows for optimum optical coupling to the POLARBEAR receiver, reducing aberrations and systematics. One polarizing grid is placed at the output of the PB-FTS and modulated via continuous rotation. This modulation allows for decomposition of the signal into different harmonics that can be used to probe potentially pernicious sources of systematic error in a polarization-sensitive instrument. The high throughput and continuous output polarizer modulation features are unique compared to other FTS calibrators used in the CMB field. In-field characterization of the POLARBEAR receiver was accomplished using the PB-FTS in April 2014. We discuss the design, construction, and operation of the PB-FTS and present the spectral characterization of the POLARBEAR receiver. We introduce future applications for the PB-FTS in the next-generation CMB experiment, the Simons Array.
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Affiliation(s)
- F Matsuda
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo Institutes for Advanced Study,The University of Tokyo, Kashiwa, Chiba 277-8583, Japan
| | - L Lowry
- Department of Physics, University of California, San Diego, California 92093-0424, USA
| | - A Suzuki
- Physics Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - M Aguilar Fáundez
- Department of Physics and Astronomy, Johns Hopkins University, Baltimore, Maryland 21218, USA
| | - K Arnold
- Department of Physics, University of California, San Diego, California 92093-0424, USA
| | - D Barron
- Department of Physics and Astronomy, University of New Mexico, Albuquerque, New Mexico 87131, USA
| | - F Bianchini
- School of Physics, University of Melbourne, Parkville, VIC 3010, Australia
| | - K Cheung
- Department of Physics, University of California, Berkeley, California 94720, USA
| | - Y Chinone
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo Institutes for Advanced Study,The University of Tokyo, Kashiwa, Chiba 277-8583, Japan
| | - T Elleflot
- Department of Physics, University of California, San Diego, California 92093-0424, USA
| | - G Fabbian
- Department of Physics and Astronomy, University of Sussex, Brighton BN1 9QH, United Kingdom
| | - N Goeckner-Wald
- Department of Physics, University of California, Berkeley, California 94720, USA
| | - M Hasegawa
- High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - D Kaneko
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo Institutes for Advanced Study,The University of Tokyo, Kashiwa, Chiba 277-8583, Japan
| | - N Katayama
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo Institutes for Advanced Study,The University of Tokyo, Kashiwa, Chiba 277-8583, Japan
| | - B Keating
- Department of Physics, University of California, San Diego, California 92093-0424, USA
| | - A T Lee
- Physics Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - M Navaroli
- Department of Physics, University of California, San Diego, California 92093-0424, USA
| | - H Nishino
- High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - H Paar
- Department of Physics, University of California, San Diego, California 92093-0424, USA
| | - G Puglisi
- Department of Physics, Stanford University, Stanford, California 94305, USA
| | - P L Richards
- Department of Physics, University of California, Berkeley, California 94720, USA
| | - J Seibert
- Department of Physics, University of California, San Diego, California 92093-0424, USA
| | - P Siritanasak
- Department of Physics, University of California, San Diego, California 92093-0424, USA
| | - O Tajima
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - S Takatori
- High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - C Tsai
- Department of Physics, University of California, San Diego, California 92093-0424, USA
| | - B Westbrook
- Radio Astronomy Laboratory, University of California, Berkeley, California 94720, USA
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Li Q, Deutsch A, Seibert J, Barch D, Livingstone I, McMullen T, Mandl SR. NATIONAL DATA ON THE FIRST SET OF ASSESSMENT-BASED QUALITY MEASURES PUBLICLY REPORTED IN SNF QRP. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- Q Li
- RTI International, Waltham, Massachusetts, United States
| | | | | | - D Barch
- RTI International, Waltham MA, USA
| | | | - T McMullen
- Centers for Medicare & Medicaid Service, Division of Chronic and Post-Acute Care, Baltimore, MD, USA
| | - S R Mandl
- Centers for Medicare & Medicaid Service, Division of Chronic and Post-Acute Care, Baltimore, MD, USA
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Barch D, Seibert J, Kandilov A, Bernacet A, Deutsch A, McMullen T, Mandl S, Smith L. EVALUATION OF RISK-ADJUSTMENT MODELS FOR A PRESSURE ULCER QUALITY MEASURE. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
| | | | | | | | | | - T McMullen
- Centers for Medicare & Medicaid Services
| | - S Mandl
- Centers for Medicare and Medicaid Services
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Abstract
OBJECTIVE This study estimated the effects of a waitlist policy on the monthly number and case mix of admissions to state psychiatric hospitals (SPHs) in North Carolina (NC). METHODS Descriptive analyses compared pre/postwaitlist differences in the monthly number and case mix of nonforensic adult admissions (N=72,035) to NC's four SPHs by using data from the three years before and the three years after the waitlist announcement. Hospital-level fixed-effects regression models further evaluated the waitlist policy's impact on the number and case mix of admissions. RESULTS Regression results confirmed that the waitlist policy was associated with both fewer admissions and changes to the case mix of admissions, including a 4.2% decrease in the percentage of monthly admissions by patients with diagnoses of substance abuse disorders (p=.002) across all months postwaitlist (partially offset by an increase of patients with diagnoses of severe mental illness alone). CONCLUSIONS Waitlists led to reduced monthly admissions and altered case mix following implementation at NC SPHs.
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Affiliation(s)
- Elizabeth M La
- Dr. La is with RTI Health Solutions and Dr. Seibert is with RTI International, Research Triangle Park, North Carolina. Dr. Morrissey and Dr. Domino are with the Cecil G. Sheps Center for Health Services Research and the Department of Health Policy and Management, Dr. Lich is with the Department of Health Policy and Management, and Dr. Waller is with the Department of Emergency Medicine, all at the University of North Carolina at Chapel Hill
| | - Joseph P Morrissey
- Dr. La is with RTI Health Solutions and Dr. Seibert is with RTI International, Research Triangle Park, North Carolina. Dr. Morrissey and Dr. Domino are with the Cecil G. Sheps Center for Health Services Research and the Department of Health Policy and Management, Dr. Lich is with the Department of Health Policy and Management, and Dr. Waller is with the Department of Emergency Medicine, all at the University of North Carolina at Chapel Hill
| | - Kristen Hassmiller Lich
- Dr. La is with RTI Health Solutions and Dr. Seibert is with RTI International, Research Triangle Park, North Carolina. Dr. Morrissey and Dr. Domino are with the Cecil G. Sheps Center for Health Services Research and the Department of Health Policy and Management, Dr. Lich is with the Department of Health Policy and Management, and Dr. Waller is with the Department of Emergency Medicine, all at the University of North Carolina at Chapel Hill
| | - Marisa Elena Domino
- Dr. La is with RTI Health Solutions and Dr. Seibert is with RTI International, Research Triangle Park, North Carolina. Dr. Morrissey and Dr. Domino are with the Cecil G. Sheps Center for Health Services Research and the Department of Health Policy and Management, Dr. Lich is with the Department of Health Policy and Management, and Dr. Waller is with the Department of Emergency Medicine, all at the University of North Carolina at Chapel Hill
| | - Julie Seibert
- Dr. La is with RTI Health Solutions and Dr. Seibert is with RTI International, Research Triangle Park, North Carolina. Dr. Morrissey and Dr. Domino are with the Cecil G. Sheps Center for Health Services Research and the Department of Health Policy and Management, Dr. Lich is with the Department of Health Policy and Management, and Dr. Waller is with the Department of Emergency Medicine, all at the University of North Carolina at Chapel Hill
| | - Anna Waller
- Dr. La is with RTI Health Solutions and Dr. Seibert is with RTI International, Research Triangle Park, North Carolina. Dr. Morrissey and Dr. Domino are with the Cecil G. Sheps Center for Health Services Research and the Department of Health Policy and Management, Dr. Lich is with the Department of Health Policy and Management, and Dr. Waller is with the Department of Emergency Medicine, all at the University of North Carolina at Chapel Hill
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9
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Seibert J. MO-FG-BRB-04: Debater. Med Phys 2016. [DOI: 10.1118/1.4957294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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10
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Seibert J. MO-AB-204-02: IHE RAD. Med Phys 2016. [DOI: 10.1118/1.4957144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Hernandez A, Boone J, Seibert J. MO-AB-BRA-05: Monte Carlo Simulation of Glandular Breast Dose in Mammography Using Breast CT-Derived Glandular Distributions. Med Phys 2015. [DOI: 10.1118/1.4925275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Seibert J, Fields S, Fullerton CA, Mark TL, Malkani S, Walsh C, Ehrlich E, Imshaug M, Tabrizi M. Use of quality measures for Medicaid behavioral health services by state agencies: implications for health care reform. Psychiatr Serv 2015; 66:585-91. [PMID: 25726975 DOI: 10.1176/appi.ps.201400130] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVE The structure-process-outcome quality framework espoused by Donabedian provides a conceptual way to examine and prioritize behavioral health quality measures used by states. This report presents an environmental scan of the quality measures and satisfaction surveys that state Medicaid managed care and behavioral health agencies used prior to Medicaid expansion in 2014. METHODS Data were collected by reviewing online documents related to Medicaid managed care contracts for behavioral health, quality strategies, quality improvement plans, quality and performance indicators data, annual outcomes reports, performance measure specification manuals, legislative reports, and Medicaid waiver requests for proposals. RESULTS Information was publicly available for 29 states. Most states relied on process measures, along with some structure and outcome measures. Although all states reported on at least one process measure of behavioral health quality, 52% of states did not use any outcomes measures and 48% of states had no structure measures. A majority of the states (69%) used behavioral health measures from the National Committee for Quality Assurance's Healthcare Effectiveness Data and Information Set, and all but one state in the sample (97%) used consumer experience-of-care surveys. Many states supplemented these data with locally developed behavioral health indicators that rely on administrative and nonadministrative data. CONCLUSIONS State Medicaid agencies are using nationally recognized as well as local measures to assess quality of behavioral health care. Findings indicate a need for additional nationally endorsed measures in the area of substance use disorders and treatment outcomes.
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Affiliation(s)
- Julie Seibert
- Dr. Seibert is with RTI International, Research Triangle Park, North Carolina (e-mail: ). Ms. Fields is with the University of Maryland School of Social Work, Baltimore. Dr. Fullerton is with Truven Health Analytics, Cambridge, Massachusetts. Dr. Mark, Ms. Malkani, Ms. Walsh, and Dr. Tabrizi are with Truven Health Analytics, Bethesda, Maryland. Ms. Ehrlich is with Mathematica Policy Research , Ann Arbor, Michigan. Ms. Imshaug is with Truven Health Analytics, Ann Arbor, Michigan
| | - Suzanne Fields
- Dr. Seibert is with RTI International, Research Triangle Park, North Carolina (e-mail: ). Ms. Fields is with the University of Maryland School of Social Work, Baltimore. Dr. Fullerton is with Truven Health Analytics, Cambridge, Massachusetts. Dr. Mark, Ms. Malkani, Ms. Walsh, and Dr. Tabrizi are with Truven Health Analytics, Bethesda, Maryland. Ms. Ehrlich is with Mathematica Policy Research , Ann Arbor, Michigan. Ms. Imshaug is with Truven Health Analytics, Ann Arbor, Michigan
| | - Catherine Anne Fullerton
- Dr. Seibert is with RTI International, Research Triangle Park, North Carolina (e-mail: ). Ms. Fields is with the University of Maryland School of Social Work, Baltimore. Dr. Fullerton is with Truven Health Analytics, Cambridge, Massachusetts. Dr. Mark, Ms. Malkani, Ms. Walsh, and Dr. Tabrizi are with Truven Health Analytics, Bethesda, Maryland. Ms. Ehrlich is with Mathematica Policy Research , Ann Arbor, Michigan. Ms. Imshaug is with Truven Health Analytics, Ann Arbor, Michigan
| | - Tami L Mark
- Dr. Seibert is with RTI International, Research Triangle Park, North Carolina (e-mail: ). Ms. Fields is with the University of Maryland School of Social Work, Baltimore. Dr. Fullerton is with Truven Health Analytics, Cambridge, Massachusetts. Dr. Mark, Ms. Malkani, Ms. Walsh, and Dr. Tabrizi are with Truven Health Analytics, Bethesda, Maryland. Ms. Ehrlich is with Mathematica Policy Research , Ann Arbor, Michigan. Ms. Imshaug is with Truven Health Analytics, Ann Arbor, Michigan
| | - Sabrina Malkani
- Dr. Seibert is with RTI International, Research Triangle Park, North Carolina (e-mail: ). Ms. Fields is with the University of Maryland School of Social Work, Baltimore. Dr. Fullerton is with Truven Health Analytics, Cambridge, Massachusetts. Dr. Mark, Ms. Malkani, Ms. Walsh, and Dr. Tabrizi are with Truven Health Analytics, Bethesda, Maryland. Ms. Ehrlich is with Mathematica Policy Research , Ann Arbor, Michigan. Ms. Imshaug is with Truven Health Analytics, Ann Arbor, Michigan
| | - Christine Walsh
- Dr. Seibert is with RTI International, Research Triangle Park, North Carolina (e-mail: ). Ms. Fields is with the University of Maryland School of Social Work, Baltimore. Dr. Fullerton is with Truven Health Analytics, Cambridge, Massachusetts. Dr. Mark, Ms. Malkani, Ms. Walsh, and Dr. Tabrizi are with Truven Health Analytics, Bethesda, Maryland. Ms. Ehrlich is with Mathematica Policy Research , Ann Arbor, Michigan. Ms. Imshaug is with Truven Health Analytics, Ann Arbor, Michigan
| | - Emily Ehrlich
- Dr. Seibert is with RTI International, Research Triangle Park, North Carolina (e-mail: ). Ms. Fields is with the University of Maryland School of Social Work, Baltimore. Dr. Fullerton is with Truven Health Analytics, Cambridge, Massachusetts. Dr. Mark, Ms. Malkani, Ms. Walsh, and Dr. Tabrizi are with Truven Health Analytics, Bethesda, Maryland. Ms. Ehrlich is with Mathematica Policy Research , Ann Arbor, Michigan. Ms. Imshaug is with Truven Health Analytics, Ann Arbor, Michigan
| | - Melina Imshaug
- Dr. Seibert is with RTI International, Research Triangle Park, North Carolina (e-mail: ). Ms. Fields is with the University of Maryland School of Social Work, Baltimore. Dr. Fullerton is with Truven Health Analytics, Cambridge, Massachusetts. Dr. Mark, Ms. Malkani, Ms. Walsh, and Dr. Tabrizi are with Truven Health Analytics, Bethesda, Maryland. Ms. Ehrlich is with Mathematica Policy Research , Ann Arbor, Michigan. Ms. Imshaug is with Truven Health Analytics, Ann Arbor, Michigan
| | - Maryam Tabrizi
- Dr. Seibert is with RTI International, Research Triangle Park, North Carolina (e-mail: ). Ms. Fields is with the University of Maryland School of Social Work, Baltimore. Dr. Fullerton is with Truven Health Analytics, Cambridge, Massachusetts. Dr. Mark, Ms. Malkani, Ms. Walsh, and Dr. Tabrizi are with Truven Health Analytics, Bethesda, Maryland. Ms. Ehrlich is with Mathematica Policy Research , Ann Arbor, Michigan. Ms. Imshaug is with Truven Health Analytics, Ann Arbor, Michigan
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Hernandez A, Gazi P, Seibert J, Boone J. TU-CD-207-11: Patient-Driven Automatic Exposure Control for Dedicated Breast CT. Med Phys 2015. [DOI: 10.1118/1.4925630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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14
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Seibert J. MO-E-213-02: Medical Physicist Involvement in Implementing Patient Protection Standards. Med Phys 2015. [DOI: 10.1118/1.4925379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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15
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Seibert J. SU-B-213-05: Development of ABR Certification Standards. Med Phys 2015. [DOI: 10.1118/1.4923779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Abuajamieh M, Laughlin E, Lei S, Stoakes S, Mayorga E, Seibert J, Nolan E, Sanz‐Fernandez M, Ross J, Selsby J, Rhoads R, Baumgard L. The Effects of Recovery Time from Heat Stress on Circulating Bioenergetic Variables and Biomarkers of Leaky Gut. FASEB J 2015. [DOI: 10.1096/fasebj.29.1_supplement.lb365] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- M Abuajamieh
- Department of Animal ScienceIowa State UniversityAmesIAUnited States
| | - E Laughlin
- Department of Animal ScienceIowa State UniversityAmesIAUnited States
| | - S Lei
- Department of Animal ScienceIowa State UniversityAmesIAUnited States
| | - S Stoakes
- Department of Animal ScienceIowa State UniversityAmesIAUnited States
| | - E Mayorga
- Department of Animal ScienceIowa State UniversityAmesIAUnited States
| | - J Seibert
- Department of Animal ScienceIowa State UniversityAmesIAUnited States
| | - E Nolan
- Department of Animal ScienceIowa State UniversityAmesIAUnited States
| | - M Sanz‐Fernandez
- Department of Animal ScienceIowa State UniversityAmesIAUnited States
| | - J Ross
- Department of Animal ScienceIowa State UniversityAmesIAUnited States
| | - J Selsby
- Department of Animal ScienceIowa State UniversityAmesIAUnited States
| | - R Rhoads
- Department of Animal & Poultry Sciences Virginia Tech UniversityBlacksburgVAUnited States
| | - L Baumgard
- Department of Animal ScienceIowa State UniversityAmesIAUnited States
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Ibbott G, Dieterich S, Yester M, Allison J, Seibert J. MO-G-19A-01: ABR Exams; A Glimpse Behind the Curtains. Med Phys 2014. [DOI: 10.1118/1.4889183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Ibbott G, Seibert J, Allison J, Frey G. MO-B-19A-01: MOC: A How-To Guide. Med Phys 2014. [DOI: 10.1118/1.4889119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Seibert J, Imbergamo P. TH-A-16A-01: Image Quality for the Radiation Oncology Physicist: Review of the Fundamentals and Implementation. Med Phys 2014. [DOI: 10.1118/1.4889531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Boone J, Seibert J. SU-C-12A-02: CTDIvol Variability in Tube-Current Modulated Body CT: The Role of Patient Diameter. Med Phys 2014. [DOI: 10.1118/1.4887850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Boone J, Cody D, Seibert J. WE-E-144-01: The Management of Imaging Procedure Dose 3: Computed Tomography. Med Phys 2013. [DOI: 10.1118/1.4815616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Boone J, Chen L, Nosratieh A, Abbey C, Lindfors K, Aminololama-Shakeri S, Seibert J. TU-E-217BCD-03: Characterization of Anatomical Noise in Mammography, Tomosynthesis and Breast CT. Med Phys 2012; 39:3914. [PMID: 28518664 DOI: 10.1118/1.4735975] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
PURPOSE The role of breast density in cancer detection has been well characterized, and newer modalities such as breast tomosynthesis and breast CT (bCT) were developed to improve cancer detection in the dense breast by reducing anatomical complexity. Anatomical noise was characterized on a small cohort of patient images and compared across digital mammography, tomosynthesis, and bCT images. METHODS AND MATERIALS An IRB-approved and HIPPA-compliant clinical study was performed on women undergoing breast biopsy, and mammography, tomosynthesis, and bCT were performed on both breasts immediately prior to biopsy. A total of 23 women participated in this study, and the unaffected breast (no lesion) was evaluated. A total of 1000 regions of interest were sampled on each image data set, and the 2D noise power spectrum (NPS) was evaluated. This was radially averaged to produce a 1D NPS, and the NPS was fit to a power law: ln{NPS(f)} = alpha+betaxln(f), over an anatomically-relevant range of spatial frequencies. The slope, beta, was averaged across patients and compared between modalities and projections. RESULTS The value of beta was determined for bCT data sets, and they were 1.75 (0.424), 1.83 (0.352), and 1.79 (0.397), for the coronal, sagittal and axial views, respectively. For tomosynthesis, beta was 3.06 (0.361) and 3.10 (0.315) for the CC and MLO views, respectively. For mammography, these values were 3.17 (0.226) and 3.30 (0.236), for the CC and MLO views, respectively. The values of beta for breast CT were significantly different than those for tomosynthesis and mammography (p<0.001, all 12 comparisons). CONCLUSIONS The results of this investigation demonstrate that the anatomical complexity of the breast, as characterized by the parameter beta, is statistically similar between mammography and tomosynthesis, a somewhat surprising finding. The breast CT image data, however, demonstrate a statistically-significant reduction in beta across all projections. Funded in part by Hologic Corporation and by a grant from the National Institute of Biomedical Imaging and Bioengineering, EB002138.
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Affiliation(s)
- J Boone
- UC Davis Medical Center, Sacramento, CA.,University of California, Davis, Sacramento, California.,University of California, Davis, Sacramento, CA.,University of California, Santa Barbara, CA.,University of California Davis, Sacramento, California.,University of California, Davis, Sacramento, California.,UC Davis Medical Center, Sacramento, CA
| | - L Chen
- UC Davis Medical Center, Sacramento, CA.,University of California, Davis, Sacramento, California.,University of California, Davis, Sacramento, CA.,University of California, Santa Barbara, CA.,University of California Davis, Sacramento, California.,University of California, Davis, Sacramento, California.,UC Davis Medical Center, Sacramento, CA
| | - A Nosratieh
- UC Davis Medical Center, Sacramento, CA.,University of California, Davis, Sacramento, California.,University of California, Davis, Sacramento, CA.,University of California, Santa Barbara, CA.,University of California Davis, Sacramento, California.,University of California, Davis, Sacramento, California.,UC Davis Medical Center, Sacramento, CA
| | - C Abbey
- UC Davis Medical Center, Sacramento, CA.,University of California, Davis, Sacramento, California.,University of California, Davis, Sacramento, CA.,University of California, Santa Barbara, CA.,University of California Davis, Sacramento, California.,University of California, Davis, Sacramento, California.,UC Davis Medical Center, Sacramento, CA
| | - K Lindfors
- UC Davis Medical Center, Sacramento, CA.,University of California, Davis, Sacramento, California.,University of California, Davis, Sacramento, CA.,University of California, Santa Barbara, CA.,University of California Davis, Sacramento, California.,University of California, Davis, Sacramento, California.,UC Davis Medical Center, Sacramento, CA
| | - S Aminololama-Shakeri
- UC Davis Medical Center, Sacramento, CA.,University of California, Davis, Sacramento, California.,University of California, Davis, Sacramento, CA.,University of California, Santa Barbara, CA.,University of California Davis, Sacramento, California.,University of California, Davis, Sacramento, California.,UC Davis Medical Center, Sacramento, CA
| | - J Seibert
- UC Davis Medical Center, Sacramento, CA.,University of California, Davis, Sacramento, California.,University of California, Davis, Sacramento, CA.,University of California, Santa Barbara, CA.,University of California Davis, Sacramento, California.,University of California, Davis, Sacramento, California.,UC Davis Medical Center, Sacramento, CA
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Affiliation(s)
- E. Jeremias
- Hospital São Lucas da Pontifícia Universidade Católica Rio Grande do Sul, Porto Alegre, Brazil
| | - J. M. Chatkin
- Hospital São Lucas da Pontifícia Universidade Católica Rio Grande do Sul, Porto Alegre, Brazil
| | - G. Chatkin
- Hospital São Lucas da Pontifícia Universidade Católica Rio Grande do Sul, Porto Alegre, Brazil
| | - J. Seibert
- Hospital São Lucas da Pontifícia Universidade Católica Rio Grande do Sul, Porto Alegre, Brazil
| | - M. Martins
- Hospital São Lucas da Pontifícia Universidade Católica Rio Grande do Sul, Porto Alegre, Brazil
| | - M. Wagner
- Hospital São Lucas da Pontifícia Universidade Católica Rio Grande do Sul, Porto Alegre, Brazil
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Cagnon C, Boone J, Seibert J, Martin M, McNitt-Gray M. TH-E-211-10: Methods for Converting CT Scanner Reported Dose Values to Dose Threshold Values Specified in Legislation: A Practical Implementation of California Senate Bill (SB) 1237. Med Phys 2011. [DOI: 10.1118/1.3613605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Boone J, Fahrig R, Rogers D, Starkschall G, Halvorsen P, Hendee W, Seibert J. MO-C-BRA-03: The Future of Medical Physics: Challenges and Opportunities. Med Phys 2011. [DOI: 10.1118/1.3612903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Judy P, Kruger R, Cagnon C, Flynn M, Seibert J. SU-GG-I-62: Entrance Skin Air Kerma of National Lung Screening Trial Chest X-Ray Exams. Med Phys 2010. [DOI: 10.1118/1.3468095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Seibert J, Giger M, Low D, Herman M, Halvorsen P. TU-E-203-01: New Member Symposium. Med Phys 2010. [DOI: 10.1118/1.3469282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Hendee W, Giger M, Starkschall G, Molloy J, Peroni C, Seibert J, Dobbins J, Smilowitz J, Hogstrom K, Montemayor V, Jackson E. TU-C-211A-01: Becoming a Better Teacher. Med Phys 2009. [DOI: 10.1118/1.3182318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Ogden K, Seibert J, Huda W. TH-D-350-06: A Web Based Physics Teaching File for Radiology Residents. Med Phys 2008. [DOI: 10.1118/1.2962891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Seibert J, Kennedy R, Cavanaugh B, Barnett C. SU-FF-I-96: Towards a Modality-Independent Image Processing Workstation for Digital Mammography. Med Phys 2007. [DOI: 10.1118/1.2760473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Seibert J. TH-A-I-609-01: Design and Performance Characteristics of Digital Radiographic Receptors. Med Phys 2005. [DOI: 10.1118/1.1999748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Seibert J, Goldman L. WE-D-W-608-01: DR QC Workshop. Med Phys 2005. [DOI: 10.1118/1.1999738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Seibert J. MO-B-I-618-02: Overview of Digital Detector Technology. Med Phys 2005. [DOI: 10.1118/1.1999672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Seibert J, Goldman L. WE-E-W-608-01: DR QC Workshop. Med Phys 2005. [DOI: 10.1118/1.1999746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Seibert J. WE-E-E-611-04: How Should We Be Doing It? Med Phys 2005. [DOI: 10.1118/1.1999739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Heintz P, Kelsey C, Bednarek D, Seibert J, Rzeszotarski M. WE-E-E-611-08: Panel Discussion. Med Phys 2005. [DOI: 10.1118/1.1998587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Nelson T, Boone J, Seibert J, Kuhn B, Kwan A, Yang K. SU-EE-A2-03: Visualization and Identification of Breast Glandular Tissue in Breast CT Volume Data. Med Phys 2005. [DOI: 10.1118/1.1997455] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Seibert J, Key M, Vural E. Review and analysis of mandibular angle fractures: Can a consensus on fixation be found? Int J Oral Maxillofac Surg 2005. [DOI: 10.1016/s0901-5027(05)81131-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Airapetian A, Akopov N, Akopov Z, Amarian M, Ammosov VV, Aschenauer EC, Avakian H, Avakian R, Avetissian A, Avetissian E, Bailey P, Baturin V, Baumgarten C, Beckmann M, Belostotski S, Bernreuther S, Bianchi N, Blok HP, Böttcher H, Borissov A, Bouhali O, Bouwhuis M, Brack J, Brauksiepe S, Brüll A, Brunn I, Bulten HJ, Capitani GP, Cisbani E, Ciullo G, Court GR, Dalpiaz PF, De Leo R, De Nardo L, De Sanctis E, Devitsin E, de Witt Huberts PKA, Di Nezza P, Düren M, Ehrenfried M, Elbakian G, Ellinghaus F, Elschenbroich U, Ely J, Fabbri R, Fantoni A, Fechtchenko A, Felawka L, Filippone BW, Fischer H, Fox B, Franz J, Frullani S, Gärber Y, Gapienko V, Garibaldi F, Garutti E, Gavrilov G, Gharibyan V, Graw G, Grebeniouk O, Green PW, Greeniaus LG, Gute A, Haeberli W, Hafidi K, Hartig M, Hasch D, Heesbeen D, Heinsius FH, Henoch M, Hertenberger R, Hesselink WHA, Hofman G, Holler Y, Holt RJ, Hommez B, Iarygin G, Izotov A, Jackson HE, Jgoun A, Jung P, Kaiser R, Kinney E, Kisselev A, Kitching P, Königsmann K, Kolster H, Kopytin M, Korotkov V, Kotik E, Kozlov V, Krauss B, Krivokhijine VG, Kyle G, Lagamba L, Laziev A, Lenisa P, Liebing P, Lindemann T, Lorenzon W, Maas A, Makins NCR, Marukyan H, Masoli F, Menden F, Mexner V, Meyners N, Mikloukho O, Miller CA, Muccifora V, Nagaitsev A, Nappi E, Naryshkin Y, Nass A, Negodaeva K, Nowak WD, Oganessyan K, Orlandi G, Podiatchev S, Potashov S, Potterveld DH, Raithel M, Rappoport V, Reggiani D, Reimer P, Reischl A, Reolon AR, Rith K, Rostomyan A, Ryckbosch D, Sakemi Y, Sanjiev I, Sato F, Savin I, Scarlett C, Schäfer A, Schill C, Schmidt F, Schnell G, Schüler KP, Schwind A, Seibert J, Seitz B, Shanidze R, Shibata TA, Shutov V, Simani MC, Sinram K, Stancari M, Steffens E, Steijger JJM, Stewart J, Stösslein U, Suetsugu K, Taroian S, Terkulov A, Tessarin S, Thomas E, Tipton B, Tytgat M, Urciuoli GM, van den Brand JFJ, van der Steenhoven G, van de Vyver R, Vetterli MC, Vikhrov V, Vincter MG, Visser J, Volmer J, Weiskopf C, Wendland J, Wilbert J, Wise T, Yen S, Yoneyama S, Zihlmann B, Zohrabian H. Evidence for quark-hadron duality in the proton spin asymmetry A1. Phys Rev Lett 2003; 90:092002. [PMID: 12689215 DOI: 10.1103/physrevlett.90.092002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2002] [Indexed: 05/24/2023]
Abstract
Spin-dependent lepton-nucleon scattering data have been used to investigate the validity of the concept of quark-hadron duality for the spin asymmetry A1. Longitudinally polarized positrons were scattered off a longitudinally polarized hydrogen target for values of Q2 between 1.2 and 12 GeV2 and values of W2 between 1 and 4 GeV2. The average double-spin asymmetry in the nucleon resonance region is found to agree with that measured in deep-inelastic scattering at the same values of the Bjorken scaling variable x. This finding implies that the description of A1 in terms of quark degrees of freedom is valid also in the nucleon resonance region for values of Q2 above 1.6 GeV2.
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Affiliation(s)
- A Airapetian
- Yerevan Physics Institute, 375036, Yerevan, Armenia
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Airapetian A, Akopov N, Akopov Z, Amarian M, Ammosov VV, Andrus A, Aschenauer EC, Augustyniak W, Avakian R, Avetissian A, Avetissian E, Bailey P, Baturin V, Baumgarten C, Beckmann M, Belostotski S, Bernreuther S, Bianchi N, Blok HP, Böttcher H, Borissov A, Bouwhuis M, Brack J, Brüll A, Brunn I, Capitani GP, Chiang HC, Ciullo G, Contalbrigo M, Court GR, Dalpiaz PF, De Leo R, De Nardo L, De Sanctis E, Devitsin E, Di Nezza P, Düren M, Ehrenfried M, Elalaoui-Moulay A, Elbakian G, Ellinghaus F, Elschenbroich U, Ely J, Fabbri R, Fantoni A, Fechtchenko A, Felawka L, Fox B, Franz J, Frullani S, Gärber Y, Gapienko G, Gapienko V, Garibaldi F, Garutti E, Gaskell D, Gavrilov G, Gharibyan V, Graw G, Grebeniouk O, Greeniaus LG, Haeberli W, Hafidi K, Hartig M, Hasch D, Heesbeen D, Henoch M, Hertenberger R, Hesselink WHA, Hillenbrand A, Holler Y, Hommez B, Iarygin G, Izotov A, Jackson HE, Jgoun A, Kaiser R, Kinney E, Kisselev A, Königsmann K, Kolster H, Kopytin M, Korotkov V, Kozlov V, Krauss B, Krivokhijine VG, Lagamba L, Lapikás L, Laziev A, Lenisa P, Liebing P, Lindemann T, Lorenzon W, Makins NCR, Marukyan H, Masoli F, Menden F, Mexner V, Meyners N, Mikloukho O, Miller CA, Miyachi Y, Muccifora V, Nagaitsev A, Nappi E, Naryshkin Y, Nass A, Negodaeva K, Nowak WD, Oganessyan K, Ohsuga H, Orlandi G, Podiatchev S, Potashov S, Potterveld DH, Raithel M, Reggiani D, Reimer P, Reischl A, Reolon AR, Rith K, Rosner G, Rostomyan A, Ryckbosch D, Sanjiev I, Savin I, Scarlett C, Schäfer A, Schill C, Schnell G, Schüler KP, Schwind A, Seibert J, Seitz B, Shanidze R, Shibata TA, Shutov V, Simani MC, Sinram K, Stancari M, Statera M, Steffens E, Steijger JJM, Stewart J, Stösslein U, Tanaka H, Taroian S, Tchuiko B, Terkulov A, Tessarin S, Thomas E, Tkabladze A, Trzcinski A, Tytgat M, Urciuoli GM, Van Der Nat P, Van Der Steenhoven G, Van De Vyver R, Vetterli MC, Vikhrov V, Vincter MG, Visser J, Vogt M, Volmer J, Weiskopf C, Wendland J, Wilbert J, Wise T, Yen S, Yoneyama S, Zihlmann B, Zohrabian H, Zupranski P. Q2 dependence of nuclear transparency for exclusive rho0 production. Phys Rev Lett 2003; 90:052501. [PMID: 12633347 DOI: 10.1103/physrevlett.90.052501] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2002] [Indexed: 05/24/2023]
Abstract
Exclusive coherent and incoherent electroproduction of the rho(0) meson from 1H and 14N targets has been studied at the HERMES experiment as a function of coherence length (l(c)), corresponding to the lifetime of hadronic fluctuations of the virtual photon, and squared four-momentum of the virtual photon (-Q2). The ratio of 14N to 1H cross sections per nucleon, called nuclear transparency, was found to increase (decrease) with increasing l(c) for coherent (incoherent) rho(0) electroproduction. For fixed l(c), a rise of nuclear transparency with Q2 is observed for both coherent and incoherent rho(0) production, which is in agreement with theoretical calculations of color transparency.
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Airapetian A, Akopov N, Amarian M, Aschenauer EC, Avakian H, Avakian R, Avetissian A, Avetissian E, Bains B, Baumgarten C, Beckmann M, Belostotski S, Belz JE, Benisch T, Bernreuther S, Bianchi N, Blouw J, Böttcher H, Borissov A, Bouwhuis M, Brack J, Brauksiepe S, Braun B, Bray B, Brons S, Brückner W, Brüll A, Bruins EEW, Bulten HJ, Capitani GP, Carter P, Chumney P, Cisbani E, Court GR, Dalpiaz PF, De Sanctis E, De Schepper D, Devitsin E, de Witt Huberts PKA, Di Nezza P, Düren M, Dvoredsky A, Elbakian G, Ely J, Fantoni A, Fechtchenko A, Ferstl M, Fiedler K, Filippone BW, Fischer H, Fox B, Franz J, Frullani S, Funk MA, Gärber Y, Gao H, Garibaldi F, Gavrilov G, Geiger P, Gharibyan V, Golendukhin A, Graw G, Grebeniouk O, Green PW, Greeniaus LG, Grosshauser C, Guidal M, Gute A, Gyurjyan V, Haas JP, Haeberli W, Hansen JO, Hartig M, Hasch D, Häusser O, Heinsius FH, Henderson R, Henoch M, Hertenberger R, Holler Y, Holt RJ, Hoprich W, Ihssen H, Iodice M, Izotov A, Jackson HE, Jgoun A, Kaiser R, Kinney E, Kisselev A, Kitching P, Kobayashi H, Koch N, Königsmann K, Kolstein M, Kolster H, Korotkov V, Korsch W, Kozlov V, Kramer LH, Krivokhijine VG, Kurisuno M, Kyle G, Lachnit W, Lenisa P, Lorenzon W, Makins NCR, Martens FK, Martin JW, Masoli F, Mateos A, McAndrew M, McIlhany K, McKeown RD, Meissner F, Menden F, Metz A, Meyners N, Mikloukho O, Miller CA, Miller MA, Milner R, Most A, Muccifora V, Mussa R, Nagaitsev A, Naryshkin Y, Nathan AM, Neunreither F, Niczyporuk M, Nowak WD, Nupieri M, Oganessyan KA, O'Neill TG, Openshaw R, Ouyang J, Owen BR, Papavassiliou V, Pate SF, Pitt M, Potashov S, Potterveld DH, Rakness G, Reali A, Redwine R, Reolon AR, Ristinen R, Rith K, Rossi P, Rudnitsky S, Ruh M, Ryckbosch D, Sakemi Y, Savin I, Scarlett C, Schäfer A, Schmidt F, Schmitt H, Schnell G, Schüler KP, Schwind A, Seibert J, Shibata TA, Shibatani K, Shin T, Shutov V, Simani C, Simon A, Sinram K, Slavich P, Spengos M, Steffens E, Stenger J, Stewart J, Stoesslein U, Sutter M, Tallini H, Taroian S, Terkulov A, Teryaev O, Thomas E, Tipton B, Tytgat M, Urciuoli GM, van den Brand JFJ, van der Steenhoven G, van de Vyver R, van Hunen JJ, Vetterli MC, Vikhrov V, Vincter MG, Visser J, Volk E, Wander W, Wendland J, Williamson SE, Wise T, Woller K, Yoneyama S, Zohrabian H. Evidence for a single-spin azimuthal asymmetry in semi-inclusive pion electroproduction. Phys Rev Lett 2000; 84:4047-4051. [PMID: 10990607 DOI: 10.1103/physrevlett.84.4047] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/1999] [Indexed: 05/23/2023]
Abstract
Single-spin asymmetries for semi-inclusive pion production in deep-inelastic scattering have been measured for the first time. A significant target-spin asymmetry of the distribution in the azimuthal angle straight phi of the pion relative to the lepton scattering plane was formed for pi(+) electroproduction on a longitudinally polarized hydrogen target. The corresponding analyzing power in the sinstraight phi moment of the cross section is 0.022+/-0.005+/-0.003. This result can be interpreted as the effect of terms in the cross section involving chiral-odd spin distribution functions in combination with a chiral-odd fragmentation function that is sensitive to the transverse polarization of the fragmenting quark.
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Abstract
Bone mineral density (BMD) is decreased in both adult and pediatric renal transplant recipients. To investigate the risk factors associated with this decrease in BMD post-renal transplant, we studied 33 children, aged 7-22 yr, who had received a renal transplant from 0.3 to 10 yr prior to this study. BMD analysis of the total body, spine, and femur was carried out by using dual-energy X-ray absorptiometry (DEXA). Age, weight, Tanner stage, time on dialysis prior to transplantation, cumulative corticosteroid dosage, and cyclosporin A (CsA) dosage since transplantation, and use of corticosteroid therapy prior to transplantation, were recorded. Spine, femur, and total body BMD Z-scores were greater than two standard deviations (2 SD) below the mean in 45%, 42%, and 17% of patients, respectively. Age correlated inversely with total body and spine BMD Z-scores (p = 0.001 and p = 0.008); no child under 14 yr of age had a total body or spine BMD Z-score greater than 2 SD below the mean for age. Patients at a Tanner stage of 4 or 5 had lower total body and spine BMD Z-scores than did patients at Tanner stages 1-3 (p = 0.043). Time post-transplant correlated inversely with both spine and total body BMD Z-score (p = 0.013 and p = 0.023). Only total body BMD Z-score correlated inversely with cumulative corticosteroid dose (in g, p = 0.045). BMD did not correlate with cumulative CsA dose. Black patients tended to have decreased total body BMD compared with Caucasian patients. In pediatric renal transplant patients, decreases in BMD start in adolescence. Risk factors for BMD loss in these patients include increasing age, time post-transplant, increasing Tanner stage, and ethnicity. Longitudinal studies in these patients and strategies to improve BMD are needed.
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Affiliation(s)
- E N Ellis
- Department of Pediatrics, University of Arkansas for Medical Sciences and Arkansas Children's Hospital, Little Rock 72202, USA.
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Seibert J. Patient surveys and quality improvement. Radiol Manage 1996; 18:45-7. [PMID: 10163133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Abstract
Patient satisfaction may be the ultimate measure of quality but it is only part of the quality measurement and improvement equation. Customers may be good at telling you what needs fixing but they cannot be expected to tell you how to fix the problem. It is important to let patient satisfaction measures guide the focus of your process improvement efforts, but these efforts must include the appropriate process measurement tools. A customer-focused survey will be valid only if it emphasizes key quality characteristics (KQCs), as defined by patients. You'll need to develop a sampling plan that will produce useable data. The design of the questionnaire and the reliability of the survey tool are critical to using patient surveys for quality improvement (QI). Surveys that don't meet standard criteria have a greater potential for error. Another challenge is the report format and analysis that are used to understand the patient responses. Having an external benchmark is critical to accurate measurement in patient surveys. Comparative data can also help prioritize QI projects. In summary, a well designed patient survey system can identify key quality characteristics, determine which KQCs have the most impact, help prioritize QI efforts, and measure patients' satisfaction in a reliable manner.
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Affiliation(s)
- J Seibert
- Parkside Associates, Inc., Park Ridge, IL, USA
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Seibert J. Analyzing your patient surveys. Adm Radiol J 1996; 15:39. [PMID: 10162801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
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Salama H, Rigotti F, Gianserra R, Seibert J. The utilization of rubber dam as a barrier membrane for the simultaneous treatment of multiple periodontal defects by the biologic principle of guided tissue regeneration: case reports. INT J PERIODONT REST 1994; 14:16-33. [PMID: 8005768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The principle of guided tissue regeneration has demonstrated a level of success in regenerating the periodontal attachment apparatus lost to periodontal disease. Several types of membrane barriers, each one with distinct properties, have been utilized to apply this principle in periodontal wound healing. A series of case reports introduces and discusses the attributes of rubber dam as a barrier membrane for the treatment of multiple periodontal osseous defects. Comparison of preoperative and postoperative clinical measurements as well as reentry procedures are utilized to highlight successful osseous regeneration.
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Affiliation(s)
- H Salama
- Implant Surgery, University of Pennsylvania, School of Dental Medicine, Philadelphia
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Abstract
This study is an economic comparison of various methods of breast reconstruction after mastectomy. The hospital bills of 287 patients undergoing breast reconstruction at three institutions from June of 1988 to March of 1991 were analyzed. The procedures examined included mastectomy, implant and tissue-expander reconstruction, and TRAM and latissimus pedicle flaps, as well as free TRAM and free gluteal flaps. These procedures were subdivided into those which were performed at the time of mastectomy and those performed at a later admission. In addition, auxiliary procedures (i.e., revision, nipple reconstruction, tissue-expander exchange, and contralateral mastopexy/reduction) also were examined. Where appropriate, these procedures were subdivided into those performed under general or local anesthesia and by inpatient or outpatient status. Data from the three institutions were converted to N.Y.U. Medical Center costs for standardization. A table is presented that summarizes the costs of each individual procedure with all the pertinent variations. In addition, a unique and novel method of analyzing the data was developed. This paper describes a menu system whereby other data regarding morbidity, mortality, and revision rates may be superimposed. With this information, the final cost of reconstruction can be extrapolated and the various methods of reconstruction can be compared. This method can be applied to almost any complex series of multiple procedures. The most salient points elucidated by this study are as follows: The savings generated by performing immediate reconstruction varies between $5092 (p < 0.05) for free gluteal flaps and $10,616 (p < 0.05) for pedicled TRAM flaps.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- A Elkowitz
- Department of Surgery, New York University Medical Center, New York
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Aronson J, Garvin K, Seibert J, Glasier C, Tursky EA. Efficiency of the bone scan for occult limping toddlers. J Pediatr Orthop 1992; 12:38-44. [PMID: 1732293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Fifty consecutive occult limping toddlers were prospectively evaluated by acute triphase 99mTc MDP scintigraphy (TTS) at Arkansas Children's Hospital from 1984 through 1989. Only patients with a limp that could not be diagnosed by an orthopaedist were included. TTS proved essential in localizing the lesion in 27 patients (54%). With only two false negatives and one false positive, this test was shown to be highly sensitive, specific, efficient, and predictive, especially as compared with temperature, white blood cell (WBC) count, erythrocyte sedimentation rate (ESR), and plain radiography. Because no infections were missed by TTS, patients with a normal TTS could be safely observed as outpatients, saving thousands of health care dollars in this small series.
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Affiliation(s)
- J Aronson
- Section of Pediatric Orthopaedics, Arkansas Children's Hospital, Little Rock 72202
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Abstract
This study was designed to evaluate the potential to reconstruct localized ridge defects with bone by preventing non-osteogenic extraskelatal connective tissue from participating in the process of healing following experimental ridge augmentation treatment procedures. Following the elevation of buccal muco-periosteal flaps, buccal, interproximal, and interradicular bone was removed to the apical level of the second and third premolar teeth and the teeth were extracted to create bucco-lingual ridge defects that averaged 13 mm x 7 mm x 3.5 mm in each quadrant of two adult beagle dogs. The defects were permitted to heal for 90 days. The defects did not fill in with new bone. Subsequently, buccal muco-periosteal flaps were elevated and a membrane was placed over the defect and positioned so that it rested on bone that was exposed adjacent to the defect. In two quadrants test support materials were used to ensure that a space was maintained between the surface of the defect and the membrane. One quadrant was maintained as a sham-operated control site, three sites received membranes and no supporting implants and two sites received supporting implants and no membranes. The surgical schedule was designed to yield sacrifice times of 8 to 12 weeks. In the three quadrants available for study that were covered with membranes, bone and/or non-mineralized connective tissue was found to fill all of the space that had been provided by the membrane. Histologic examination confirmed that the space was filled with young, actively growing bone by 90 days. No new bone formation (bone fill) was observed in the sham-operated control site.
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Affiliation(s)
- J Seibert
- Department of Periodontology, University of Pennsylvania, Philadelphia
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Lange T, Garvin K, Jimenez J, Seibert J, Hutchins L, Hough A, Haynes D. Primary malignant bone tumors--a management approach. J Ark Med Soc 1985; 82:115-9. [PMID: 3161865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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McCoy JR, Morrissy RT, Seibert J. Clinical experience with the technetium-99 scan in children. Clin Orthop Relat Res 1981:175-80. [PMID: 7471551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
A study of 86 bone scans in 79 patients was conducted to determine ways to enhance the usefulness of this test and learn what factors influence its results. While the overall value of the bone scan as we initially used it was not what we had hoped, it could be improved substantially by utilizing all initial clinical information when ordering as well as interpreting the scan. Its main value in suspected sepsis is to localize affected areas in and around the pelvis and spine. The scan is often unnecessary in the diagnosis of long-bone osteomyelitis and is seldom indicated when diagnosing cellulitis or synovitis. In occult trauma it is valuable for further investigation of specific areas with possible nondisplaced fractures. Needle aspiration of the bone or joint does not seem to alter the scan. We conclude that the bone scan is chiefly valuable in locating focal areas of skeletal pathophysiology.
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