OBJECTIVE: The purpose of this study was to determine the ability of dual-energy computed tomography (DECT) and virtual non-calcium (VNCa) imaging to detect magnetic resonance imaging (MRI)-demonstrated bone bruises several weeks after unilateral knee injury. MATERIALS AND METHODS: Patients with unilateral knee injury and MRI-confirmed bone bruises who had undergone a DECT scan of both knees were retrospectively identified. Two radiologists evaluated VNCa images for bruises in four regions per knee without knowing the MRI results. The mean CT numbers were calculated for the lesion-positive and lesion-negative regions of the injured knee, and the contralateral knee. RESULTS: Fourteen patients with a total of 36 regions positive for bone bruises on MRI were identified. The median delay between injury and DECT was 37 days (range, 11-99 days). The mean CT numbers in VNCa images for lesion-positive and lesion-negative regions were -7.6 ± 24.9 HU and -58.2 ± 19.5 HU, respectively. There were no significant differences in mean CT number between the lesion-negative regions in the injured knee and the contralateral knee. No resolution of bruising was seen before week 5, and bone bruising was still identifiable in one out of the two patients scanned at 10 weeks following injury. CONCLUSIONS: DECT and VNCa images can identify bone bruising for at least 10 weeks after injury.
OBJECTIVE: The purpose of this study was to determine the ability of dual-energy computed tomography (DECT) and virtual non-calcium (VNCa) imaging to detect magnetic resonance imaging (MRI)-demonstrated bone bruises several weeks after unilateral knee injury. MATERIALS AND METHODS:Patients with unilateral knee injury and MRI-confirmed bone bruises who had undergone a DECT scan of both knees were retrospectively identified. Two radiologists evaluated VNCa images for bruises in four regions per knee without knowing the MRI results. The mean CT numbers were calculated for the lesion-positive and lesion-negative regions of the injured knee, and the contralateral knee. RESULTS: Fourteen patients with a total of 36 regions positive for bone bruises on MRI were identified. The median delay between injury and DECT was 37 days (range, 11-99 days). The mean CT numbers in VNCa images for lesion-positive and lesion-negative regions were -7.6 ± 24.9 HU and -58.2 ± 19.5 HU, respectively. There were no significant differences in mean CT number between the lesion-negative regions in the injured knee and the contralateral knee. No resolution of bruising was seen before week 5, and bone bruising was still identifiable in one out of the two patients scanned at 10 weeks following injury. CONCLUSIONS: DECT and VNCa images can identify bone bruising for at least 10 weeks after injury.
Authors: Katrina N Glazebrook; Lee J Brewerton; Shuai Leng; Rickey E Carter; Peter C Rhee; Naveen S Murthy; B Mathew Howe; Michael D Ringler; Diane L Dahm; Michael J Stuart; Cynthia H McCollough; J G Fletcher Journal: Skeletal Radiol Date: 2013-12-14 Impact factor: 2.199
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Authors: S R Kapelov; L M Teresi; W G Bradley; N R Bucciarelli; D M Murakami; W J Mullin; J E Jordan Journal: Radiology Date: 1993-12 Impact factor: 11.105
Authors: Giovanni Foti; Matteo Catania; Simone Caia; Luigi Romano; Alberto Beltramello; Claudio Zorzi; Giovanni Carbognin Journal: Radiol Med Date: 2019-07-04 Impact factor: 3.469
Authors: Francis I Baffour; Katrina N Glazebrook; Jonathan M Morris; Gregory J Michalak; Joel G Fletcher; Shuai Leng; Cynthia H McCollough Journal: Skeletal Radiol Date: 2019-05-30 Impact factor: 2.199
Authors: Christian Booz; Jochen Nöske; Lukas Lenga; Simon S Martin; Ibrahim Yel; Katrin Eichler; Tatjana Gruber-Rouh; Nicole Huizinga; Moritz H Albrecht; Thomas J Vogl; Julian L Wichmann Journal: Eur Radiol Date: 2019-07-26 Impact factor: 5.315
Authors: N Engelhard; K G Hermann; J Greese; M Fuchs; M Pumberger; M Putzier; T Diekhoff Journal: Skeletal Radiol Date: 2019-12-10 Impact factor: 2.199