No abstract available.
Estradiol* ; Female ; Ovary*

No abstract available.
Female ; Pregnancy ; Pregnancy, Tubal*

No abstract available.
Neuromuscular Junction* ; Physiology*

PURPOSE: In order to assess the incidence and radiologic findings of herniation pit of the femur neck in Korean. IVlaterials and Methods:In 152 macerated femurs of 88 cadavers, and randomly selected 115 hips of 70 patients, the presence of herniation pit was determi ned by using fluoroscopy and radiography. It was then examined by CT for inspection of overlying surface and its opening was confirmed by inserting thin steal wire under the fluoroscopic guidance. RESULTS: Seventeen herniation pits in 15 macerated femurs of 13 cadavers were noted. (14.8%, 13/88). Two of 13 individuals showed bilaterality. All lesions were found only in males. Six herniation pit in 6 femurs of 6 patients (8.6%, 6/70) were also noted. All lesions were on anterosuperior aspect of. femur neck. Plain radiographs of macerated femurs revealed well marginated and thin sclerosis in 15 lesions. Of all 23 lesions, CTshowed cortical breakdown in 3, and overlying cortical thickening in 8. In 15 macerated femurs, roughed area of cortex was found in anterosuperior aspect of femur in all cases, and tiny openings(diameter less than 1 mm) related to cystic lesions were confirmed in 9 lesions. CONCLUSION: The incidence of herniation pits was 14.8% in 88 cadaver, and 8.6% in 70 patients. All were males.
Cadaver ; Femur Neck* ; Femur* ; Fluoroscopy ; Hip ; Humans ; Incidence* ; Male ; Radiography ; Sclerosis

PURPOSE: To evaluate the optimal pulse sequences in the detection of erosions and for the discrimination of theeffusion from pannus. MATERIALS AND METHODS: MR studies were performed in thirteen patients with clinical diagnosis of rheumatoid arthritis. We used a 1.5T MR unit with single or dual 3 inch coil. We compared coronal images at the same location, obtained with pulse sequences of T2, T2 with fat saturation, and postcontrast T1 with fat suppression. Erosions were assessed by comparing the count of the numbers of erosions depending on each imaging method. A four point scoring systems was used for the comparison of conspicuitof lesion. RESULTS: T2WI with fat suppression and postcontreat T1WI with fat suppresison were better than conventional T2WI in the detection of erosions. The pannus had a heterogeneous signal on T2WI, some of which were enhanced after the intravenous injection of MR contrast a gents. CONCLUSION: We suggest that the fat suppression TIWI with enhacnement or the fat suppression T2WI were better than conventional T2WI for detecting both bone erosion and pannus. The postcontrast MR imaging may often be helpul in distinguishing pannus from the effusion.
Arthritis, Rheumatoid* ; Diagnosis ; Discrimination (Psychology) ; Humans ; Injections, Intravenous ; Magnetic Resonance Imaging* ; Wrist*

No abstract available.
Femur* ; Gestational Age* ; Ultrasonography*

No abstract available.
Animals ; Cricetinae* ; Cryopreservation* ; Oocytes*

No abstract available.
Animals ; Cricetinae* ; Fertilization in Vitro* ; Humans*

No abstract available.
Glomerular Filtration Rate*

PURPOSE: For the production and evaluation of the tissue-equivalent phantom. MATERIALS AND METHODS: We used agarous gel and oil as a basic component of the mixture and added Tween 80 for the stabilization of phantoms. We did the test for homogeneity and measured T1 and T2 relexation times of each phantom tube. RESULTS: T1 relaxation time ranged from 642 to 2781 msec and T2 relaxation times from 42 to 157 msec. Each phantom was significantly different in T1 relaxation time and T2 relaxation time (p < .0001). CONCLUSION: Tissue equivalent phantom may provide good information on the optimal sequence before MR imaging of patients and may be valuable if it is used with the patients' MR imaging.
Agar ; Humans ; Magnetic Resonance Imaging* ; Polysorbates ; Relaxation