Initial experience with visualizing hand and foot tendons by dual-energy computed tomography

Deng, Kai; Liu, Cheng; Ma, Rui

doi:10.1016/j.clinimag.2008.12.007

Cited by 43 publications

(23 citation statements)

References 12 publications

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“…When patients with knee trauma underwent CT scans, VNCa technique of DECT with appropriately reduced radiation dose can be routinely applied to detect traumatic BMLs, which was affirmed in a previous study with a reduced volume CT dose index of 8.69 mGy for DECT protocol [24]. In addition to VNCa images, DECT tendon imaging can also be used to observe tendons and ligaments of the knee joint [17,[25][26][27][28], because DECT technology is able to identify dense hydroxylysine and hydroxyproline residues in the side chains of the collagen structure of tendons and ligaments. In addition, CT images are superior to show fracture details.…”

Section: Discussionmentioning

confidence: 83%

Good interrater reliability of a new grading system in detecting traumatic bone marrow lesions in the knee by dual energy CT virtual non-calcium images

Cao

Wang

Kong

et al. 2015

European Journal of Radiology

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Section: Discussionmentioning

confidence: 83%

Good interrater reliability of a new grading system in detecting traumatic bone marrow lesions in the knee by dual energy CT virtual non-calcium images

Cao

Wang

Kong

et al. 2015

European Journal of Radiology

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“…Tendon and ligament visualization has been proposed by CT vendors, but few studies have evaluated this application ( Fig. 13) (123)(124)(125). CT artrography using the dual-energy technique has also been described (126).…”

Section: Musculoskeletal Applicationsmentioning

confidence: 99%

Dual-energy CT revisited by multidetector ct: review of principles and clinical applications

Karçaaltıncaba

Aktaş²

2010

Diagn Interv Radiol

154

127

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A lthough dual-energy CT (DECT) was first conceived in 1976, it has not been used widely for clinical indications (1-11). Recently, the simultaneous acquisition of dual-energy data has been introduced using multidetector CT (MDCT) with two X-ray tubes and rapid peak kilovoltage (kVp) switching (gemstone spectral imaging, GSI) (12-16). Two major advantages of DECT are material decomposition by the almost simultaneous acquisition of two image series with different kVp (80 and 140 kVp) and the elimination of misregistration artifacts. In general, noncontrast (unenhanced) images can be avoided by using the dual-energy mode for body and neurological applications; iodine can be removed from the image, and a virtual non-contrast (water) image can be acquired. The major advantage of 80-kVp compared to 140-kVp images is a higher image contrast (Fig. 1). Hounsfield unit measurements on DECT are not absolute and can change depending on the kVp used for the acquisition (at different keV). Typically, a combination of 80/140 kVp is used for DECT, but for some applications, 100/140 kVp is preferred. In this study, we summarized the clinical applications of DECT in the brain, chest and abdomen and in the cardiovascular and musculoskeletal systems (Table 1). Technique and principlesThe basic principle of dual-energy is the acquisition of 2 datasets from the same anatomic location with different kVp (usually 80 and 140 kVp) (1,2,17,18). In the early days of CT, consecutive single-slice acquisitions with different kVp were performed as a dual-energy technique, but this method suffered from breathing and partial volume artifacts (1, 2). At present, an entire body can be scanned within seconds using the DECT technique, and thus, misregistration artifacts due to breathing are eliminated.Currently, three systems are capable of the nearly simultaneous acquisition of dual-energy data during a single breath hold (12, 14, 15): 64-slice dual-source CT (Definition, Siemens Medical Systems; Erlangen, Germany), 128-slice dual-source CT (Definition Flash, Siemens Medical Systems) and high-definition 64-MDCT (Discovery 750 HD, GE Healthcare; Milwaukee, Wisconsin, USA). In the two systems available from Siemens, the two tubes (tubes A and B) use different kVp (80 and 140 kVp), and in 64-MDCT, the kVp switches from 80 to 140 kVp in less than 0.5 ms. In dual systems, there is concern regarding the susceptibility of the system to cardiac motion due to the time difference (75 or 83 ms) between the tube A and tube B acquisitions of the dual-energy data, but the dual-source CT and 64-MDCT have not been compared to evaluate this issue. The technical specifications of the DECT systems are summarized in Table 2.The images presented in this article were acquired using a 64-slice dual source CT (Definition, Siemens Medical Systems) and a 64-MDCT (Discovery 750HD, GE Healthcare). The DECT data acquired by both systems can be evaluated with a dedicated workstation using dual-energy software that ABSTRACT Although dual-energy CT (DECT) was first conceived in ...

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“…12 Collagen material decomposition algorithms have been created to depict tendons and ligaments, 8 and this has included detection of pathology. 13 Dual-energy CT scan SOMATOM Definition Flash (Siemens Healthcare) has 2 x-ray tubes/detector pairs, housed at 90 degrees to one another in the gantry. These rotate simultaneously at different energy levels (typically at approximately 100 and 140 kV) acquiring 2 data sets.…”

mentioning

confidence: 99%

Achilles Tendinopathy and Partial Tear Diagnosis Using Dual-Energy Computed Tomography Collagen Material Decomposition Application

Mallinson

Stevens

Reisinger

et al. 2013

Journal of Computer Assisted Tomography

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Computed tomographic (CT) scans of the ankle and foot are frequently obtained with in-patients with hind foot and ankle pain to identify fractures, arthritis, and bone lesions. Soft tissue detail is limited, however. Dual-energy CT provides additional information on soft tissue structures, including tendons, with no additional radiation dose to the patient. We present a case of an Achilles tendon tear visualized on DECT, which was subsequently confirmed with magnetic resonance imaging.

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Initial experience with visualizing hand and foot tendons by dual-energy computed tomography

Cited by 43 publications

References 12 publications

Good interrater reliability of a new grading system in detecting traumatic bone marrow lesions in the knee by dual energy CT virtual non-calcium images

Good interrater reliability of a new grading system in detecting traumatic bone marrow lesions in the knee by dual energy CT virtual non-calcium images

Dual-energy CT revisited by multidetector ct: review of principles and clinical applications

Achilles Tendinopathy and Partial Tear Diagnosis Using Dual-Energy Computed Tomography Collagen Material Decomposition Application

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