0000000000142160
AUTHOR
Alexander Hlawatsch
Sympathetic Vasomotor Response of the Radial Artery in Patients With Diabetic Foot Syndrome
OBJECTIVE—Neurophysiological assessment of the peripheral autonomic system is characterized by various limitations. An alternative approach to laser Doppler and venous plethymography is the assessment of the sympathetic vasomotor response of the radial artery obtained by continuous wave Doppler sonography. Nomogram data have been established and demonstrate the temporary disappearance of diastolic flow after coughing or deep inspiration. RESEARCH DESIGN AND METHODS—We assessed the sympathetic vasomotor response in 25 patients (mean age 64 years, range 43–76) with diabetic foot syndrome. The Doppler data were correlated with nerve conduction studies of the median and peroneal nerve, the exte…
Preoperative assessment of breast cancer: sonography versus MR imaging.
The purposes of our study were to compare the diagnostic value of whole-breast sonography and MR imaging as adjunctive techniques to mammography and to determine whether MR imaging should be used routinely in the preoperative assessment of patients with suspected breast cancer.. One hundred four women (age range, 34-84 years; mean age, 60 years) with findings highly suggestive of malignancy in the breast were examined with mammography, sonography, and dynamic MR imaging before undergoing surgery. All visualized suspicious lesions were correlated histologically. The diagnostic relevance of sonographic and MR imaging findings was compared with the diagnostic value of the findings of clinical …
Outcome Analysis and Rational Management of Enhancing Lesions Incidentally Detected on Contrast-Enhanced MRI of the Breast
The purpose of our study was to assess the prevalence, characteristics, and clinical consequence of incidentally detected enhancing lesions on MRI of the breast. SUBJECTS AND METHODS. MRI of the breast (1.0-T scanner, dynamic gadolinium-enhanced T1-weighted three-dimensional gradient-echo sequence, double breast coil) was performed on 1273 women for different indications. Enhancing incidental lesions were defined as enhancing lesions on MRIs that were not expected from findings on the previous conventional imaging. They were classified in five assessment categories using a scoring system based on morphologic and kinetic enhancement characteristics. Detection of enhancing incidental lesions …
Undetected Malignancies of the Breast: Dynamic Contrast-enhanced MR Imaging at 1.0 T
To assess the prevalence and characteristics of malignant breast lesions not identified with magnetic resonance (MR) imaging.Breast tissue specimens were obtained in 464 of 967 patients who had undergone dynamic gadolinium-enhanced T1-weighted fast low-angle shot three-dimensional MR imaging of both breasts. A comparison of sensitivity, specificity, and predictive values of the prospectively recorded findings of mammography, ultrasonography (US), and MR imaging with the histopathologic results was performed with receiver operating characteristic (ROC) curve analysis. MR imaging examination findings that caused a false-negative diagnosis were reviewed to identify possible sources of error.Hi…
MR-Mammographie zur Responsekontrolle bei primärer Chemobrachytherapie des BET-inoperablen Mammakarzinoms
Ziel: Evaluierung (1) moglicher storender Effekte neoadjuvanter Chemobrachytherapie auf die MR-Mammographie, (2) der Eignung der MRM zur Bestimmung der Resttumorgrose nach Therapie und (3) der Eignung der MRM zur Prognose des Gesamtansprechens nach den ersten Therapiezyklen. Methoden: 14 Patientinnen, die an einer praoperativen Tumorreduktionstherapie (4 Zyklen Chemotherapie kombiniert mit interstitieller Radiotherapie) teilnahmen, wurden mittels dynamischer MR-Mammographie (1 T, zeitliche Auflosung 93 s, raumliche Auflosung 1,9 mm, 0,1 mmol/kg GdDTPA) vor Therapie, nach den ersten beiden Chemotherapiezyklen, nach der Radiotherapie und dem dritten Zyklus sowie nach Therapieabschluss untersu…