Focal uptake at the rotator interval or inferior capsule of shoulder on 18 F-FDG PET/CT is associated with adhesive capsulitis

To determine if focal increased uptake at the rotator interval (RI) and/or inferior capsule (IC) on F-FDG PET/CT ("positive PET") predicts the presence of adhesive capsulitis (AC). Three populations were retrospectively examined. Group 1 included 1,137 consecutive F-FDG PET/CT studies and...

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Veröffentlicht in:Skeletal radiology 2017-04, Vol.46 (4), p.533
Hauptverfasser: Sridharan, Radhika, Engle, Mitchell Philip, Garg, Naveen, Wei, Wei, Amini, Behrang
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container_issue 4
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container_title Skeletal radiology
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creator Sridharan, Radhika
Engle, Mitchell Philip
Garg, Naveen
Wei, Wei
Amini, Behrang
description To determine if focal increased uptake at the rotator interval (RI) and/or inferior capsule (IC) on F-FDG PET/CT ("positive PET") predicts the presence of adhesive capsulitis (AC). Three populations were retrospectively examined. Group 1 included 1,137 consecutive F-FDG PET/CT studies and was used to determine the prevalence of focal uptake at the RI or IC. Group 2 included 361 cases from a 10-year period with F-FDG PET/CT and MRI of shoulder performed within 45 days of each other and was used to enrich the study group. Group 3 included 109 randomly selected patients from the same time frame as groups 1 and 2 and was used to generate the control group. The study group consisted of 15 cases from the three groups, which had positive PET findings. PET/CT images were assessed in consensus by two musculoskeletal radiologists. The reference standard for a diagnosis of AC was clinical and was made by review of the medical record by a pain medicine physician. The prevalence of focal activity at either the RI or IC ("positive PET") was 0.53%. Nine patients had a clinical diagnosis of AC and 15 patients had a positive PET. The sensitivity and specificity of PET for detection of AC was 56% and 87%, respectively. PET/CT had a positive likelihood ratio for AC of 6.3 (95% CI: 2.8-14.6). Increased uptake at the RI or IC on PET/CT confers a moderate increase in the likelihood of AC.
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The sensitivity and specificity of PET for detection of AC was 56% and 87%, respectively. PET/CT had a positive likelihood ratio for AC of 6.3 (95% CI: 2.8-14.6). 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source MEDLINE; Springer Nature - Complete Springer Journals
subjects Bursitis - diagnostic imaging
Female
Fluorodeoxyglucose F18 - pharmacokinetics
Humans
Male
Middle Aged
Positron Emission Tomography Computed Tomography - methods
Radiopharmaceuticals - pharmacokinetics
Retrospective Studies
Sensitivity and Specificity
Shoulder Joint - diagnostic imaging
title Focal uptake at the rotator interval or inferior capsule of shoulder on 18 F-FDG PET/CT is associated with adhesive capsulitis
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