Evaluation of clot formation in blood-contrast agent mixture: experimental study on ionic/nonionic contrast agents and plastic/ glass syringes

No abstract available.

Diagnostic value of computed tomography in pancreatic cancer

This retrospective study was performed to assess CT scan findings of pancratic cancer and its ability todetermine resectability. CT scans of 41 patients, who were diagnosed to have pancreatic cancer on histological orclinical base, were reviewed. Most common findings were; focal pancreatic enlargement, diffuse pancreaticenlargement, loss of distinct contour, peripancretic fat obliteration, bile duct or pancreatic duct dilatation,vascular invasion, lymph node involvement, direct invasion of adjacent organs and distant metastasis.Resectability was assessed according to generally accepted CT findings such as small pancreatic mass lesion havingnormal lobulated contour of pancreas, no evidence of vascular invasion, no evidence lymph node involvement andfree of distant metastasis. With the criteria, 5 cases among 41 cases deemed to be resectable. However onoperation all cases were found unresectable indicating prediction of tumor resectability is difficult even withhelp of CT. Nonetheless CT would be very helpful in management of patients having pancreatic cancer since CT wouldshorten the diagnostic procedures of pancreatic cancer.

Ultrasonographic findings of cataract

Examining the eye with high resolution ultrasonography, authors encountered 34 cases(41 eyeballs) of cataractand found out its characteristic ultrasonographic findings, though cataract is easily recognized by physician oninspection. Ultrasonographic findings of cataract were as follows; 1. Thickening of lens due to edema. 2.Demonstration of lens echo in whole circumference. 3. Multiple internal lens echo.

High-resolution ultrasonographic findings in thyroid nodules

Ultrasonograhy, it's excellent ability of differentiating cystic from solid lesion and depicting detailedarchitecture, proved itself useful in the diagnosis of thyroid pathologies. Adanced high resolution equipmentsmade hidden small lesion detected and finer structure clearly seen. They seemed to throw light on the histologicaldiagnosis of thyroid diseases, especially differentiation of benignancy and malignancy. Author reviewed picturesof high-resolution ultrasonography of thyroid disease(24 ases0 and correlated them witn proven pathologicalfindings. The results were as follows: 1. Multiplicity of lesion favors benignancy(4 cases). 2. Well definedmargin favors benignancy(14/17), while ill defined margin favors malignancy(3/4), and lesion of no margin favorsthyroiditis(3/3). 3. Surrounding halo favors benignancy(7 cases). 4. Hypoechogenicity were found in most ofmalignancy and thyroiditis. Cystic components in solid nodule were common findings in bening and malignantlesions. Calcification was not found in malignancy.

Computed tomography of intracerebral hemorrhage

CT is the most accurate and reliable method for the diagnosis of intracerebral and intraventricularhemorrhage. The precise anatomic extent of the hematoma, associated cerebral edema, ventricular deformity anddisplacement, and hydrocephalus are all readily assessed. Aside from head trauma, the principal cause ofintracerbral hematoma is hypertensive vascular disease. Although hematomas from various causes may present similarCT appearances frequetnly the correct etiology may be suggested by considereation of patient's age, clinicalhistory, and the location of the hematoma. The analytical study was performed in 180 cases of intracerebralhamorrhages by CT from Oct. 1981 to Jan. 1983. The results were as follows; 1. The most prevalent age group was6th decade(37.2%) Male was prevalent to female at the ration of 1.6 to 1. 2. The most common symptom and sign wasmental distrubance (48.7%), motor weakness(23%), headache(10.6%), nausea and vomiting (9.8%). 3. The causes ofhemorrhage were hypertension (53.9%), head trauma (30.6%), aneurysm(6.1%) and A-V malformation (7.2%). 4. Thefrequent locations of hemorrhage were basal ganglia and thalamus(40.4%), lobes(35%), ventricles(21.8%). 5. Thedistribution of hemorrhage was intracerebral hemorrhage(65.6%), intracerebral and intraventricularhemorrhage(30.3%), intraventricular hemorrhage(4.4%).

Radiological diagnosis of perinephric abscess

With conventional radiological approaches, diagnosis of perinephric abscess is difficult in many occasions. CTand ultrasound enable accurate detection of lesions and precise determination of their extent. We review our casesand discuss the usefulness of these new modalities for the diagnosis and follow up of the lesions.

Complications after lumbar myelography with amipaque

Amipaque is a water soluble, non-ionic myelographic contrast media, and owing to its high diagnostic accuracy and safety, its use is gradually increasing. The authors studied the complications after Amipaque lumbermyelography in 61 patients with low back pain during the period from Jan. 1981 to Nov. 1981 in Chung Ang University Hospital. The results were as follows; 1. Total complication rate was 52%(32 of 61) and there was nosexual difference in its occurrence. 2. In total, no difference in complication rate was found between head-up positioned group with a degree of 30degrees (group I) after procedure and head-up positioned group with a degree of 70degrees (group II) but female patients had more complication rate in group I than in group II (75% vs 50%).Headache was more common in group I and nausea was more common in group II. 3. Headache was most common complicaiton (44%) and there was no sexual difference in its occurrence. 4. No significant difference in complication rate was found between patients proved to have HBP and patients to have not. 5. Complications were less common in patients with punctured level of L4-5 than in patients with L2-3 or L3-4 level puncture.