AJR. American journal of roentgenology
-
AJR Am J Roentgenol · Nov 2004
Distinction between cerebral abscesses and high-grade neoplasms by dynamic susceptibility contrast perfusion MRI.
The purpose of the study was to determine whether dynamic susceptibility contrast perfusion MRI allowed distinction of cerebral abscesses from cystic high-grade brain neoplasms. ⋯ In this small preliminary study, dynamic susceptibility perfusion MRI allowed distinction of cerebral abscesses from rim-enhancing high-grade gliomas. Validation of these results using a prospective large study is warranted.
-
AJR Am J Roentgenol · Oct 2004
Comparative StudyCT pulmonary angiography: a comparative analysis of the utilization patterns in emergency department and hospitalized patients between 1998 and 2003.
The purpose of our study was to objectively examine the temporal utilization patterns of CT pulmonary angiography in emergency department and hospitalized patients in an academic tertiary care center. ⋯ The evolution of CT pulmonary angiography utilization has led to a significant increase in the number of patients being imaged for pulmonary embolism with a coincident significant decrease in the rates of CT-detected pulmonary embolism and ancillary findings both in emergency department and hospitalized patients.
-
AJR Am J Roentgenol · Oct 2004
Comparative StudyMRI for detection of hepatocellular carcinoma: comparison of mangafodipir trisodium and gadopentetate dimeglumine contrast agents.
The purpose of our study was to compare the performance of mangafodipir trisodium (Mn-DPDP)-enhanced and dynamic gadopentetate dimeglumine-enhanced MRI for the detection of hepatocellular carcinoma. ⋯ Gadopentetate dimeglumine-enhanced MRI was superior to Mn-DPDP-enhanced MRI for the detection of hepatocellular carcinomas.
-
AJR Am J Roentgenol · Oct 2004
The nonvisualized appendix: incidence of acute appendicitis when secondary inflammatory changes are absent.
The objective of our study was to assess the importance of nonvisualization of the appendix and its association with acute appendicitis on helical CT when secondary inflammatory changes are absent. ⋯ In the absence of a distinctly visualized appendix and secondary inflammatory changes, the incidence of acute appendicitis is low. Nonvisualization of the appendix even when a small amount of fat is present in the right lower quadrant may safely exclude acute appendicitis if no secondary CT findings are present.
-
AJR Am J Roentgenol · Oct 2004
MDCT in emergency radiology: is a standardized chest or abdominal protocol sufficient for evaluation of thoracic and lumbar spine trauma?
The objective of our study was to assess the diagnostic performance of a standardized 4-MDCT trauma protocol for the evaluation of the thoracic and lumbar spine in patients with multiple injuries. ⋯ Accurate evaluation of the thoracolumbar spine is possible with targeted image reconstruction based on a standardized 4-MDCT trauma protocol of the chest and abdomen.