The accuracy of therapeutic ultrasound equipment

a systematic review

S. M. Schabrun, H. L. Walker, L. S. Chipchase

Research output: Contribution to journalArticle

Abstract

Objectives: Because of its importance for patient safety and treatment efficacy, the volume and methodological quality of the evidence available on the accuracy of therapeutic ultrasound equipment is examined with respect to power output and timing function. Evidence for a causal relationship between ultrasound inaccuracy and machine age, brand, frequency of use and intensity settings is also examined. Methods: A systematic literature search was performed to identify observational studies examining levels of ultrasound machine inaccuracy. Methodological quality was examined using the Sheffield University hierarchy of evidence and a modified version of the McMaster University critical appraisal tool. Data was pooled using the descriptive statistics (mean, standard deviation, percentage) available in each study. Results: Eighteen studies out of 47 were retained for review. Methodological scores ranged from 2 to 15˙5 (maximum 20). Two thirds of ultrasound machines (64˙6%; SD 23˙2; range 14–100%) were found to produce an inaccurate power input. The average percentage of timers found to be inaccurate was 30˙1 and 22˙6% at 5 and 10 min, respectively. The only variable correlated with level of machine inaccuracy was that of machine age. Discussion: The current review indicates that a significant proportion of ultrasound machines produce inaccurate power outputs or have an inaccurate timing function. This finding has implications for both clinical practice and therapeutic ultrasound research.

Original languageEnglish
Pages (from-to)443-449
Number of pages7
JournalPhysical Therapy Reviews
Volume13
Issue number6
DOIs
Publication statusPublished - 1 Dec 2008
Externally publishedYes

Fingerprint

Therapeutic Human Experimentation
Patient Safety
Observational Studies
Equipment and Supplies
Therapeutics

Cite this

Schabrun, S. M. ; Walker, H. L. ; Chipchase, L. S. / The accuracy of therapeutic ultrasound equipment : a systematic review. In: Physical Therapy Reviews. 2008 ; Vol. 13, No. 6. pp. 443-449.
@article{2a70e605e2a447c49d52d6bada6cad49,
title = "The accuracy of therapeutic ultrasound equipment: a systematic review",
abstract = "Objectives: Because of its importance for patient safety and treatment efficacy, the volume and methodological quality of the evidence available on the accuracy of therapeutic ultrasound equipment is examined with respect to power output and timing function. Evidence for a causal relationship between ultrasound inaccuracy and machine age, brand, frequency of use and intensity settings is also examined. Methods: A systematic literature search was performed to identify observational studies examining levels of ultrasound machine inaccuracy. Methodological quality was examined using the Sheffield University hierarchy of evidence and a modified version of the McMaster University critical appraisal tool. Data was pooled using the descriptive statistics (mean, standard deviation, percentage) available in each study. Results: Eighteen studies out of 47 were retained for review. Methodological scores ranged from 2 to 15˙5 (maximum 20). Two thirds of ultrasound machines (64˙6{\%}; SD 23˙2; range 14–100{\%}) were found to produce an inaccurate power input. The average percentage of timers found to be inaccurate was 30˙1 and 22˙6{\%} at 5 and 10 min, respectively. The only variable correlated with level of machine inaccuracy was that of machine age. Discussion: The current review indicates that a significant proportion of ultrasound machines produce inaccurate power outputs or have an inaccurate timing function. This finding has implications for both clinical practice and therapeutic ultrasound research.",
keywords = "EQUIPMENT ACCURACY, POWER OUTPUT, THERAPEUTIC ULTRASOUND, TIMING FUNCTION",
author = "Schabrun, {S. M.} and Walker, {H. L.} and Chipchase, {L. S.}",
year = "2008",
month = "12",
day = "1",
doi = "10.1179/174328808X373989",
language = "English",
volume = "13",
pages = "443--449",
journal = "Physical Therapy Reviews",
issn = "1083-3196",
number = "6",

}

The accuracy of therapeutic ultrasound equipment : a systematic review. / Schabrun, S. M.; Walker, H. L.; Chipchase, L. S.

In: Physical Therapy Reviews, Vol. 13, No. 6, 01.12.2008, p. 443-449.

Research output: Contribution to journalArticle

TY - JOUR

T1 - The accuracy of therapeutic ultrasound equipment

T2 - a systematic review

AU - Schabrun, S. M.

AU - Walker, H. L.

AU - Chipchase, L. S.

PY - 2008/12/1

Y1 - 2008/12/1

N2 - Objectives: Because of its importance for patient safety and treatment efficacy, the volume and methodological quality of the evidence available on the accuracy of therapeutic ultrasound equipment is examined with respect to power output and timing function. Evidence for a causal relationship between ultrasound inaccuracy and machine age, brand, frequency of use and intensity settings is also examined. Methods: A systematic literature search was performed to identify observational studies examining levels of ultrasound machine inaccuracy. Methodological quality was examined using the Sheffield University hierarchy of evidence and a modified version of the McMaster University critical appraisal tool. Data was pooled using the descriptive statistics (mean, standard deviation, percentage) available in each study. Results: Eighteen studies out of 47 were retained for review. Methodological scores ranged from 2 to 15˙5 (maximum 20). Two thirds of ultrasound machines (64˙6%; SD 23˙2; range 14–100%) were found to produce an inaccurate power input. The average percentage of timers found to be inaccurate was 30˙1 and 22˙6% at 5 and 10 min, respectively. The only variable correlated with level of machine inaccuracy was that of machine age. Discussion: The current review indicates that a significant proportion of ultrasound machines produce inaccurate power outputs or have an inaccurate timing function. This finding has implications for both clinical practice and therapeutic ultrasound research.

AB - Objectives: Because of its importance for patient safety and treatment efficacy, the volume and methodological quality of the evidence available on the accuracy of therapeutic ultrasound equipment is examined with respect to power output and timing function. Evidence for a causal relationship between ultrasound inaccuracy and machine age, brand, frequency of use and intensity settings is also examined. Methods: A systematic literature search was performed to identify observational studies examining levels of ultrasound machine inaccuracy. Methodological quality was examined using the Sheffield University hierarchy of evidence and a modified version of the McMaster University critical appraisal tool. Data was pooled using the descriptive statistics (mean, standard deviation, percentage) available in each study. Results: Eighteen studies out of 47 were retained for review. Methodological scores ranged from 2 to 15˙5 (maximum 20). Two thirds of ultrasound machines (64˙6%; SD 23˙2; range 14–100%) were found to produce an inaccurate power input. The average percentage of timers found to be inaccurate was 30˙1 and 22˙6% at 5 and 10 min, respectively. The only variable correlated with level of machine inaccuracy was that of machine age. Discussion: The current review indicates that a significant proportion of ultrasound machines produce inaccurate power outputs or have an inaccurate timing function. This finding has implications for both clinical practice and therapeutic ultrasound research.

KW - EQUIPMENT ACCURACY

KW - POWER OUTPUT

KW - THERAPEUTIC ULTRASOUND

KW - TIMING FUNCTION

UR - http://www.scopus.com/inward/record.url?scp=85044244782&partnerID=8YFLogxK

U2 - 10.1179/174328808X373989

DO - 10.1179/174328808X373989

M3 - Article

VL - 13

SP - 443

EP - 449

JO - Physical Therapy Reviews

JF - Physical Therapy Reviews

SN - 1083-3196

IS - 6

ER -