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E M Corrado

Publications and source records attributed to E M Corrado.

13 recordsLinked to original sources
PubMed2001

Interactive navigation system for shock wave applications.

The latest generation of shock wave lithotripters, with therapy heads mounted on articulated arms, have found widespread application in the treatment of orthopedic diseases. Currently, integration of an ultrasound probe in the therapy head is the dominant modality for positioning the shock wave focus on the treatment area. For orthopedic applications, however, X-ray imaging is often preferred. This article describes a new method to locate the therapy head of a lithotripter. In the first step, the surgeon positions the tissue to be treated at the isocenter of a C-arc. This is achieved using AP and 30-degree lateral projections, with corresponding horizontal and vertical movements of the patient under fluoroscopic guidance. These movements register the anatomic location in the coordinate system of the C-arc. In the second step, the therapy head is navigated to align the shock wave focus with the isocenter. Position data are reported from an optical tracker mounted on the X-ray system, which tracks an array of infrared LEDs on the therapy head. The accuracy of the tracking system was determined on a test bench, and was calculated to be 1.55 mm (RMS) for an angular movement of +/-15 degrees around a calibrated position. Free-hand navigation and precise alignment are performed with a single virtual reality display. The display is calculated by a computer system in real time, and uses graphical symbols to represent the shock wave path and isocenter. In an interactive process, the physician observes the display while navigating the therapy head towards the isocenter. Precise alignment is achieved by displaying an enlarged view of the intersecting graphical symbols. Results from the first tests on 100 patients demonstrate the feasibility of this approach in a clinical environment.

Computer Simulation↗
PubMed1982

Thermographic diagnosis of glomus tumour.

We will describe the advantages offered by tele-thermographic test of glomus tumour localized in the hand. Such advantages are the simplicity and absolute safety of the test and the possibility of obtaining useful information on the site and size of the neoplasm, permitting a correct diagnosis even if the characteristic signs are lacking. The test, moreover, can be carried out on an out-patient basis. We will present some of the cases in which dynamic thermography permitted us to confirm the clinical diagnosis of glomus tumour.

Fingers↗
PubMedDate not supplied

[Hand injuries due to fireworks explosion].

Two different series of patients with burst injuries of the hand were retrospectively reviewed: one series included 23 men, 15-55 years old, referred to the emergency department for the first-instance assessment of injuries of the right hand (13 patients) and left hand (10 patients). The other series included 44 patients (42 men and 2 women, aged 7-61 years) referred to our department for second-instance examinations: the latter patients had burst injuries involving only the hands in 43 cases and both the hand and the foot in one case. We report the radiologic patterns of traumatic bone injuries (fractures and amputations) and of musculotendinous and cutaneous injuries and discuss their mechanisms and pathogenesis. The two series were compared and the results follow: in both series the right hand was more frequently involved, metacarpal bones were most often fractured and phalanges most often amputated. In the first series, in the right hand the carpal bones were involved in one patient only, the 2nd and 3rd metacarpal bones were most frequently fractured and the 2nd finger was most frequently involved. In the left hand, the carpal bones were never affected, the 1st metacarpal bone was most often amputated and the 5th metacarpal bone most often fractured; the 2nd finger was most frequently involved. In the second series, in the right hand, the 1st metacarpal bone was most frequently fractured and the 2nd metacarpal bone most often amputated; the 2nd finger was most frequently involved. In the left hand, the 4th metacarpal bone was most frequently fractured and the 5th metacarpal bone most often amputated. The severity of the above injuries and the extent of tissue damage depend on several factors, including firecracker speed, shape, size, weight and characteristics. Radiologic exams are very useful for the accurate study of these traumatic injuries, providing indirect information about musculotendinous and cutaneous involvement. Prompted by the relative lack of information on the management of these injuries, we suggest that radiologic exams be quickly performed to help choose the most appropriate surgical approach for best cosmetic and functional results.

Adolescent↗