MR imaging may help detect the bone marrow edema, which is seen as increased signal intensity with poorly defined margins on STIR images. Unfortunately, STIR sequence is not available in our Magnetom 1.0 Tesla menu. Based on old IR sequence in this MR unit, we have tried to make a new STIR sequence. This sequence is proved on image quality in bone contusion and early inflammation diagnosis.
Bone Diseases ; diagnosis ; Early Diagnosis ; Bone and Bones

We had drawn out some following remarks from the our studied group of patients with bone marrow failure; - There are 89.29% patients with bone marrow failure in three blood cell lineages; and 35.71% of the patients is servere aplastic anemia. - 14.29% patients with bone marrow failure were finished in the diagnosis of acute leukemia(M1= 50%, M2= 50%). - The persentages of the patients with bone marrow failure died from infection (37.5%) and hemorrhage (50.0%) are still high. Almost of the patients were died in the stage from 24 months to 48 months after having the diagnosis.
Bone Marrow Diseases ; diagnosis ; bone marrow

From 26 patients with bone marrow failure, we had drawn some following remarks:- Over 50% of the patients is in the ages from 61 to 75 years old. (youngest: 42: oldest: 82 years old).- There were 38.46% of the patients that were used to contact with some causes of AA in their history particalarly 11.54%- using cloramphenicol; and 7.69% used to live in the area with American orange toxicant. - 100% of the patient with anemia; 15.36% with anemia + hemorrhage; then anemia + infection (7.69%) and anemia + hemorrahage + infection(7.69%).
Bone Marrow Diseases ; diagnosis ; Epidemiologic Studies

No abstract available.
Biopsy ; Biopsy, Needle ; Bone Marrow/metabolism ; Bone Marrow/pathology ; Bone Marrow Diseases/diagnosis ; Bone Marrow Examination* ; Comparative Study ; Diagnosis, Differential ; Hematologic Diseases/diagnosis* ; Human ; Kidney Failure, Chronic/pathology

Bone scan using radioactive isotope can be more effective than conventional X-ray radiograph for finding jaw lesion because it takes an image of the physiologic change of bone. This study is designed to show how available bone scan is able to diagnose jaw lesion better than simple X-ray and CT, as well as to determine a basis of diagnosis for jaw lesion using bone scan. The 77 patients, visiting the Oral & Maxillofacial Surgery, Department of Dankook University Hospital from January 2002. to Augast 2005. who were diagnosed histopathologically with postoperative malignant tumor, osteomyelitis, and bone infiltrative benign disease. Preoperative X-ray, CT, bone scan were taken and were compared with histopathologic finding. Also to compare specificty of each lesion in bone scan, bone density was measured to compare. The results were as follows.1. Among the 25 cases of oral malignant tumor of bony invasion, a positive diagnosis associated with histopathologic evaluation, 22 cases(88%) in bone scan, 14 cases(56%) in CT image, and 10 cases40%) in simple X-ray.2. Among the 31 cases of osteomyelitis, a positive diagnosis associated with histopathologic evaluation, 30 cases(97%) in bone scan, 23 cases(74%) in CT image, and 19 cases(61%) in simple X-ray.3. Among the 11cases of bone infiltrative benign disease, a positive diagnosis associated with histopathologic evaluation, 11 cases(100%) in bone scan, 10 cases(91%) in CT image, and 6 cases(55%) in simple X-ray.4. Measurement of bone density in each group showed no statistical significant difference between malignant tumor and osteomyelitis as well as benign bone disease. But, a statistical significance was seen between osteomyelitis and benign bone disease.From this results, bone scan are more sensitive than simple X-ray and CT image in jaw lesion diagnosis, but specificity shows no significant difference. Therefore, it should be suggested that evaluation of bone scan must be carrying out in reference to final histopathologic diagnosis.]]>
Bone Density ; Bone Diseases ; Diagnosis ; Diagnosis, Differential ; Humans ; Jaw ; Osteomyelitis ; Sensitivity and Specificity ; Surgery, Oral

PURPOSE: To investigate the change of bone healing process after endodontic treatment of the tooth with an apical lesion by fractal analysis. MATERIALS AND METHODS: Radiographic images of 35 teeth from 33 patients taken on first diagnosis, 6 months, and 1 year after endodontic treatment were selected. Radiographic images were taken by JUPITER Computerized Dental X-ray System (R). Fractal dimensions were calculated three times at each area by Scion Image PC (R) program. Rectangular region of interest (30 x 30) were selected at apical lesion and normal apex of each image. RESULTS: The fractal dimension at apical lesion of first diagnosis (L0) is 0.940+/-0.361 and that of normal area (N0) is 1.186+/-0.727 (p< 0.05). Fractal dimension at apical lesion of 6 months after endodontic treatment (L1) is 1.076+/-0.069 and that of normal area (N1) is 1.192+/-0.055 (p< 0.05). Fractal dimension at apical lesion of 1 year after endodontic treatment (L2) is 1.163+/-0.074 and that of normal area (N2) is 1.225+/-0.079 (p< 0.05). After endodontic treatment, the fractal dimensions at each apical lesions depending on time showed statistically significant difference. And there are statistically significant different between normal area and apical lesion on first diagnosis, 6 months after, 1 year after. But the differences were grow smaller as time flows. CONCLUSION: The evaluation of the prognosis after the endodontic treatment of the apical lesion was estimated by bone regeneration in apical region. Fractal analysis was attempted to overcome the limit of subjective reading, and as a result the change of the bone during the healing process was able to be detected objectively and quantitatively.
Bone Regeneration ; Diagnosis ; Fractals* ; Humans ; Periapical Diseases ; Prognosis ; Tooth

Bone Diseases, Metabolic ; diagnosis ; etiology ; therapy ; Chronic Disease ; Humans ; Liver Diseases ; complications ; diagnosis ; therapy

A 7-yr-old girl presented with progressive shortening of the right upper arm and limitation of shoulder motion. Pseudohypoparathyroidism associated with Albright's hereditary osteodystrophy was diagnosed by biochemical, hormonal and radiographic studies. Her condition was complicated by severe humerus varus on the right side. Proximal humeral valgization osteotomy and concomitant humeral lengthening resulted in an improvement of the shoulder joint motion and activity in daily life.
Bone Diseases/*complications/*diagnosis ; Bone Diseases, Developmental/diagnosis ; Bone Lengthening ; Child ; Female ; Foot/radiography ; Hand/radiography ; Humans ; Humerus/*radiography ; Joint Deformities, Acquired/diagnosis ; Osteotomy ; Pseudohypoparathyroidism/*complications ; Time Factors

INTRODUCTION: Bone mineral density (BMD) is an important index in diagnosis of osteoporosis and other metabolic bone diseases, prediction of fractures, and monitoring treatment. This study was to find a more feasible technique for prediction of osteoporotic fracture between dual energy X-ray absorptiometry (DXA) and quantitative computed tomography (QCT) and to reveal the actual change of bone strength when BMD was changed. METHODS: Ten of these 20 specimens were used as the demineralized group and the other 10 as the control. Each specimen was immersed in HCl solution at for a period of at least 10 minutes, up to 100 minutes, at an interval of 10 minutes for different levels of demineralization. BMD was measured using DXA and QCT. Uniaxial compression tests were conducted to measure biomechanical parameters. Pearson correlation analysis was used respectively between BMD and biomechanical parameters and between DXA and QCT. RESULTS: Elastic modulus (r=0.87) and yield stress (r=0.84) showed a statistically significant correlation with DXA BMD. Through correlation analysis with QCT BMD and elastic modulus, correlation coefficient showed hemi-vertebra (r=0.80) and trabecular (r=0.68). In yield stress, there was a statistically significant correlation in hemi-vertebra (r=0.87) and trabecular bone (r=0.84). CONCLUSION: DXA is a current standard technique not only for diagnosis of osteoporosis but also for prediction of fracture risk compared to QCT. Actual decrease of bone strength was much greater than that of BMD by both DXA and QCT.
Absorptiometry, Photon* ; Biomechanical Phenomena ; Bone Density* ; Bone Diseases, Metabolic ; Diagnosis ; Elastic Modulus ; Osteoporosis ; Osteoporotic Fractures

Infectious and inflammatory bone diseases include a wide range of disease process, depending on the patient's age, location of infection, various causative organisms, duration from symtom onset, accompanied fracture or prior surgery, prosthesis insertion, and underlying systemic disease such as diabetes, etc. Bone infection may induce massive destruction of bones and joints, results in functional reduction and disability. The key to successful management is early diagnosis and proper treatment. Various radionuclide imaging methods including three phase bone scan, Ga-67 scan, WBC scan, and combined imaging techniques such as bone/Ga-67 scan, WBC/bone marrow scan add complementary role to the radiologic imaging modalities including plain radiography, CT and MRI. F-18 FDG PET imaging also has recently been introduced in diagnosis of infected prosthesis and chronic active osteomyelitis. Selection of proper nuclear medicine imaging method will improve the diagnostic accuracy of infectious and inflammatory bone diseases, based on understading of pathogenesis and radiologic imaging findings.
Bone Diseases ; Bone Diseases, Infectious* ; Bone Marrow ; Diagnosis* ; Early Diagnosis ; Joints ; Magnetic Resonance Imaging ; Nuclear Medicine* ; Osteomyelitis ; Prostheses and Implants ; Radiography ; Radionuclide Imaging