To assess the feasibility of visualizing hand and foot tendons by dual-energy computed tomography (CT).
Methods and materials
Twenty patients who suffered from hand or feet pains were scanned on dual-source CT (Definition, Forchheim, Germany) with dual-energy mode at tube voltages of 140 and 80 kV and a corresponding ratio of 1:4 between tube currents. The reconstructed images were postprocessed by volume rendering techniques (VRT) and multiplanar reconstruction (MPR). All of the suspected lesions were confirmed by surgery or follow-up studies.
Twelve patients (total of 24 hands and feet, respectively) were found to be normal and the other eight patients (total of nine hands and feet, respectively) were found abnormal. Dual-energy techniques are very useful in visualizing tendons of the hands and feet, such as flexor pollicis longus tendon, flexor digitorum superficialis/profundus tendon, Achilles tendon, extensor hallucis longus tendon, and extensor digitorum longus tendon, etc. It can depict the whole shape of the tendons and their fixation points clearly. Peroneus longus tendon in the sole of the foot was not displayed very well. The distal ends of metacarpophalangeal joints with extensor digitoium tendon and extensor pollicis longus tendon were poorly shown. The lesions of tendons such as the circuitry, thickening, and adherence were also shown clearly.
Dual-energy CT offers a new method to visualize tendons of the hand and foot. It could clearly display both anatomical structures and pathologic changes of hand and foot tendons.
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- MR Imaging of ligament and tendon injuries of the fingers.Radiographics. 2002; 22: 237-256
- Material differentiation by dual energy CT: initial experience.Eur Radiol. 2007; 17: 1510-1517
- Contrast-enhanced coronary artery visualization by dual-source computed tomography-initial experience.Eur J Radiol. 2006; 57: 331-335
- Intensity distribution and impact of scatter for dual-source CT.Phys Med Biol. 2007; 52: 6969-6989
- MR Imaging of tendon lesions of the hand and wrist.Magn Reson Imaging Clin N Am. 2004; 12: 333-347
- Sonography findings in tears of the extensor pollicis longus tendon and correlation with CT, MRI and surgical findings.Eur J Radiol. 2008; 66: 112-116
- Sonography of a rupture of the tendon of the extensor pollicis longus muscle: initial clinical experience and correlation with findings at cadaveric dissection.AJR Am J Roentgenol. 2005; 184: 175-179
- Three-dimensional CT imaging of flexor tendon ruptures in the hand and wrist.J Comput Assist Tomogr. 2003; 27: 169-174
- Ultrasonography for the diagnosis of soft tissue conditions in the hand.Scand J Plast Reconstr Surg Hand Surg. 1991; 25: 225-231
- Three-dimensional computed tomography imaging: its applicability in the evaluation of extensor tendons in the hand and wrist.J Comput Assist Tomogr. 2005; 29: 94-98
- Rupture of posterior tibial tendon: CT and MR imaging with surgical correlation.Radiology. 1988; 169: 229-235
- Flexor tendon tears in the hand: use of MR imaging to diagnose degree of injury in a cadaver model.AJR Am J Roentgenol. 1996; 166: 615-620
Published online: February 23, 2009
Accepted: December 16, 2008
Received: November 10, 2008
© 2009 Elsevier Inc. Published by Elsevier Inc. All rights reserved.